mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-22 16:26:39 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gstav1parser.c

4689 lines
150 KiB
C
Raw Blame History

/* gstav1parser.c
*
* Copyright (C) 2018 Georg Ottinger
* Copyright (C) 2019-2020 Intel Corporation
* Author: Georg Ottinger <g.ottinger@gmx.at>
* Author: Junyan He <junyan.he@hotmail.com>
* Author: Victor Jaquez <vjaquez@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstav1parser
* @title: GstAV1Parser
* @short_description: Convenience library for parsing AV1 video bitstream.
*
* For more details about the structures, you can refer to the AV1 Bitstream &
* Decoding Process Specification V1.0.0
* [specification](https://aomediacodec.github.io/av1-spec/av1-spec.pdf)
*
* It offers you bitstream parsing of low overhead bistream format (Section 5)
* or Annex B according to the setting of the parser. By calling the function of
* gst_av1_parser_reset(), user can switch between bistream mode and Annex B mode.
*
* To retrieve OBUs and parse its headers, you should firstly call the function of
* gst_av1_parser_identify_one_obu() to get the OBU type if succeeds or just discard
* the data if fails.
*
* Then, depending on the #GstAV1OBUType of the newly parsed #GstAV1OBU,
* you should call the differents functions to parse the structure details:
*
* * #GST_AV1_OBU_SEQUENCE_HEADER: gst_av1_parser_parse_sequence_header_obu()
*
* * #GST_AV1_OBU_TEMPORAL_DELIMITER: gst_av1_parser_parse_temporal_delimiter_obu()
*
* * #GST_AV1_OBU_FRAME: gst_av1_parser_parse_frame_obu()
*
* * #GST_AV1_OBU_FRAME_HEADER: gst_av1_parser_parse_frame_header_obu()
*
* * #GST_AV1_OBU_TILE_GROUP: gst_av1_parser_parse_tile_group_obu()
*
* * #GST_AV1_OBU_METADATA: gst_av1_parser_parse_metadata_obu()
*
* * #GST_AV1_OBU_REDUNDANT_FRAME_HEADER: gst_av1_parser_parse_frame_header_obu()
*
* * #GST_AV1_OBU_TILE_LIST: gst_av1_parser_parse_tile_list_obu()
*
* Note: Some parser functions are dependent on information provided in the sequence
* header and reference frame's information. It maintains a state inside itself, which
* contains all global vars and reference information during the whole parsing process.
* Calling gst_av1_parser_reset() or a new sequence's arriving can clear and reset this
* inside state.
*
* After successfully handled a frame(for example, decode a frame successfully), you
* should call gst_av1_parser_reference_frame_update() to update the parser's inside
* state(such as reference information, global segmentation information, etc).
*
* @since: 1.18.00
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstav1parser.h"
#include <gst/base/gstbitreader.h>
#include <string.h>
#include <stdlib.h>
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT gst_av1_debug_category_get ()
static GstDebugCategory *
gst_av1_debug_category_get (void)
{
static gsize cat_gonce = 0;
if (g_once_init_enter (&cat_gonce)) {
GstDebugCategory *cat = NULL;
GST_DEBUG_CATEGORY_INIT (cat, "codecparsers_av1", 0, "av1 parse library");
g_once_init_leave (&cat_gonce, (gsize) cat);
}
return (GstDebugCategory *) cat_gonce;
}
#endif /* GST_DISABLE_GST_DEBUG */
#define AV1_READ_BIT(br) ((guint8) gst_bit_reader_get_bits_uint32_unchecked (br, 1))
#define AV1_READ_UINT8(br) ((guint8) gst_bit_reader_get_bits_uint32_unchecked (br, 8))
#define AV1_READ_UINT16(br) ((guint16) gst_bit_reader_get_bits_uint32_unchecked (br, 16))
#define AV1_READ_UINT32(br) gst_bit_reader_get_bits_uint32_unchecked (br, 32)
#define AV1_READ_UINT64(br) gst_bit_reader_get_bits_uint64_unchecked (br, 64)
#define AV1_READ_BITS(br, nbits) \
((nbits <= 32) ? (gst_bit_reader_get_bits_uint32_unchecked (br, nbits)) : \
(gst_bit_reader_get_bits_uint64_unchecked (br, nbits)))
static guint64
av1_read_bits_checked (GstBitReader * br, guint nbits,
GstAV1ParserResult * retval, const char *func_name, gint line)
{
guint64 read_bits = 0;
gboolean result;
if (nbits <= 64)
result = gst_bit_reader_get_bits_uint64 (br, &read_bits, nbits);
else
result = FALSE;
if (result == TRUE) {
*retval = GST_AV1_PARSER_OK;
return read_bits;
} else {
*retval = GST_AV1_PARSER_NO_MORE_DATA;
GST_WARNING ("Read %d bits failed in func: %s, line %d", nbits, func_name,
line);
return 0;
}
}
#define AV1_READ_BIT_CHECKED(br, ret) \
((guint8) av1_read_bits_checked (br, 1, ret, __func__, __LINE__))
#define AV1_READ_UINT8_CHECKED(br, ret) \
((guint8) av1_read_bits_checked (br, 8, ret, __func__, __LINE__))
#define AV1_READ_UINT16_CHECKED(br, ret) \
((guint16) av1_read_bits_checked (br, 16, ret, __func__, __LINE__))
#define AV1_READ_UINT32_CHECKED(br, ret) \
((guint32) av1_read_bits_checked (br, 32, ret, __func__, __LINE__))
#define AV1_READ_BITS_CHECKED(br, nbits, ret) \
av1_read_bits_checked (br, nbits, ret, __func__, __LINE__)
#define AV1_REMAINING_BYTES(br) (gst_bit_reader_get_remaining (br) / 8)
#define AV1_REMAINING_BITS(br) (gst_bit_reader_get_remaining (br))
/*************************************
* *
* Helperfunctions *
* *
*************************************/
/* 4.7
*
* floor of the base 2 logarithm of the input x */
static gint
av1_helpers_floor_log2 (guint32 x)
{
gint s = 0;
while (x != 0) {
x = x >> 1;
s++;
}
return s - 1;
}
/* 5.9.16 Tile size calculation
*
* returns the smallest value for k such that blkSize << k is greater
* than or equal to target */
static gint
av1_helper_tile_log2 (gint blkSize, gint target)
{
gint k;
for (k = 0; (blkSize << k) < target; k++);
return k;
}
/* 5.9.29 */
static gint
av1_helper_inverse_recenter (gint r, gint v)
{
if (v > 2 * r)
return v;
else if (v & 1)
return r - ((v + 1) >> 1);
else
return r + (v >> 1);
}
/* Shift down with rounding for use when n >= 0, value >= 0 */
static guint64
av1_helper_round_power_of_two (guint64 value, guint16 n)
{
return (value + (((guint64) (1) << n) >> 1)) >> n;
}
/* Shift down with rounding for signed integers, for use when n >= 0 */
static gint64
av1_helper_round_power_of_two_signed (gint64 value, guint16 n)
{
return (value < 0) ? -((gint64) (av1_helper_round_power_of_two (-value, n)))
: (gint64) av1_helper_round_power_of_two (value, n);
}
static gint
av1_helper_msb (guint n)
{
int log = 0;
guint value = n;
int i;
g_assert (n != 0);
for (i = 4; i >= 0; --i) {
const gint shift = (1 << i);
const guint x = value >> shift;
if (x != 0) {
value = x;
log += shift;
}
}
return log;
}
static const guint16 div_lut[GST_AV1_DIV_LUT_NUM + 1] = {
16384, 16320, 16257, 16194, 16132, 16070, 16009, 15948, 15888, 15828, 15768,
15709, 15650, 15592, 15534, 15477, 15420, 15364, 15308, 15252, 15197, 15142,
15087, 15033, 14980, 14926, 14873, 14821, 14769, 14717, 14665, 14614, 14564,
14513, 14463, 14413, 14364, 14315, 14266, 14218, 14170, 14122, 14075, 14028,
13981, 13935, 13888, 13843, 13797, 13752, 13707, 13662, 13618, 13574, 13530,
13487, 13443, 13400, 13358, 13315, 13273, 13231, 13190, 13148, 13107, 13066,
13026, 12985, 12945, 12906, 12866, 12827, 12788, 12749, 12710, 12672, 12633,
12596, 12558, 12520, 12483, 12446, 12409, 12373, 12336, 12300, 12264, 12228,
12193, 12157, 12122, 12087, 12053, 12018, 11984, 11950, 11916, 11882, 11848,
11815, 11782, 11749, 11716, 11683, 11651, 11619, 11586, 11555, 11523, 11491,
11460, 11429, 11398, 11367, 11336, 11305, 11275, 11245, 11215, 11185, 11155,
11125, 11096, 11067, 11038, 11009, 10980, 10951, 10923, 10894, 10866, 10838,
10810, 10782, 10755, 10727, 10700, 10673, 10645, 10618, 10592, 10565, 10538,
10512, 10486, 10460, 10434, 10408, 10382, 10356, 10331, 10305, 10280, 10255,
10230, 10205, 10180, 10156, 10131, 10107, 10082, 10058, 10034, 10010, 9986,
9963, 9939, 9916, 9892, 9869, 9846, 9823, 9800, 9777, 9754, 9732,
9709, 9687, 9664, 9642, 9620, 9598, 9576, 9554, 9533, 9511, 9489,
9468, 9447, 9425, 9404, 9383, 9362, 9341, 9321, 9300, 9279, 9259,
9239, 9218, 9198, 9178, 9158, 9138, 9118, 9098, 9079, 9059, 9039,
9020, 9001, 8981, 8962, 8943, 8924, 8905, 8886, 8867, 8849, 8830,
8812, 8793, 8775, 8756, 8738, 8720, 8702, 8684, 8666, 8648, 8630,
8613, 8595, 8577, 8560, 8542, 8525, 8508, 8490, 8473, 8456, 8439,
8422, 8405, 8389, 8372, 8355, 8339, 8322, 8306, 8289, 8273, 8257,
8240, 8224, 8208, 8192,
};
static gint16
av1_helper_resolve_divisor_32 (guint32 D, gint16 * shift)
{
gint32 f;
gint32 e;
*shift = av1_helper_msb (D);
// e is obtained from D after resetting the most significant 1 bit.
e = D - ((guint32) 1 << *shift);
// Get the most significant DIV_LUT_BITS (8) bits of e into f
if (*shift > GST_AV1_DIV_LUT_BITS)
f = av1_helper_round_power_of_two (e, *shift - GST_AV1_DIV_LUT_BITS);
else
f = e << (GST_AV1_DIV_LUT_BITS - *shift);
g_assert (f <= GST_AV1_DIV_LUT_NUM);
*shift += GST_AV1_DIV_LUT_PREC_BITS;
// Use f as lookup into the precomputed table of multipliers
return div_lut[f];
}
/*************************************
* *
* Bitstream Functions *
* *
*************************************/
/* 4.10.5
*
* Unsigned integer represented by a variable number of little-endian
* bytes. */
static guint32
av1_bitstreamfn_leb128 (GstBitReader * br, GstAV1ParserResult * retval)
{
guint8 leb128_byte = 0;
guint64 value = 0;
gint i;
for (i = 0; i < 8; i++) {
leb128_byte = AV1_READ_UINT8_CHECKED (br, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
value |= (((gint) leb128_byte & 0x7f) << (i * 7));
if (!(leb128_byte & 0x80))
break;
}
/* check for bitstream conformance see chapter4.10.5 */
if (value < G_MAXUINT32) {
return (guint32) value;
} else {
GST_WARNING ("invalid leb128");
*retval = GST_AV1_PARSER_BITSTREAM_ERROR;
return 0;
}
}
/* 4.10.3
*
* Variable length unsigned n-bit number appearing directly in the
* bitstream */
static guint32
av1_bitstreamfn_uvlc (GstBitReader * br, GstAV1ParserResult * retval)
{
guint8 leadingZero = 0;
guint32 readv;
guint32 value;
gboolean done;
while (1) {
done = AV1_READ_BIT_CHECKED (br, retval);
if (*retval != GST_AV1_PARSER_OK) {
GST_WARNING ("invalid uvlc");
return 0;
}
if (done)
break;
leadingZero++;
}
if (leadingZero >= 32) {
value = G_MAXUINT32;
return value;
}
readv = AV1_READ_BITS_CHECKED (br, leadingZero, retval);
if (*retval != GST_AV1_PARSER_OK) {
GST_WARNING ("invalid uvlc");
return 0;
}
value = readv + (1 << leadingZero) - 1;
return value;
}
/* 4.10.6
*
* Signed integer converted from an n bits unsigned integer in the
* bitstream */
static guint32
av1_bitstreamfn_su (GstBitReader * br, guint8 n, GstAV1ParserResult * retval)
{
guint32 v, signMask;
v = AV1_READ_BITS_CHECKED (br, n, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
signMask = 1 << (n - 1);
if (v & signMask)
return v - 2 * signMask;
else
return v;
}
/* 4.10.7
*
* Unsigned encoded integer with maximum number of values n */
static guint32
av1_bitstreamfn_ns (GstBitReader * br, guint32 n, GstAV1ParserResult * retval)
{
gint w, m, v;
gint extra_bit;
w = av1_helpers_floor_log2 (n) + 1;
m = (1 << w) - n;
v = AV1_READ_BITS_CHECKED (br, w - 1, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
if (v < m)
return v;
extra_bit = AV1_READ_BITS_CHECKED (br, 1, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
return (v << 1) - m + extra_bit;
}
/* 4.10.4
*
* Unsigned little-endian n-byte number appearing directly in the
* bitstream */
static guint
av1_bitstreamfn_le (GstBitReader * br, guint8 n, GstAV1ParserResult * retval)
{
guint t = 0;
guint8 byte;
gint i;
for (i = 0; i < n; i++) {
byte = AV1_READ_BITS_CHECKED (br, 8, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
t += (byte << (i * 8));
}
return t;
}
/* 5.9.13
*
* Delta quantizer */
static gint8
av1_bitstreamfn_delta_q (GstBitReader * br, GstAV1ParserResult * retval)
{
guint8 delta_coded;
delta_coded = AV1_READ_BIT_CHECKED (br, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
if (delta_coded) {
gint delta_q = av1_bitstreamfn_su (br, 7, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
return delta_q;
} else {
return 0;
}
return 0;
}
/* 5.3.4 */
static GstAV1ParserResult
av1_bitstreamfn_trailing_bits (GstBitReader * br, guint32 nbBits)
{
guint8 trailing_one_bit, trailing_zero_bit;
g_assert (nbBits);
trailing_one_bit = AV1_READ_BIT (br);
if (trailing_one_bit != 1) {
return GST_AV1_PARSER_BITSTREAM_ERROR;
}
nbBits--;
while (nbBits > 0) {
trailing_zero_bit = AV1_READ_BIT (br);
if (trailing_zero_bit != 0)
return GST_AV1_PARSER_BITSTREAM_ERROR;
nbBits--;
}
return GST_AV1_PARSER_OK;
}
static GstAV1ParserResult
av1_skip_trailing_bits (GstAV1Parser * parser, GstBitReader * br,
GstAV1OBU * obu)
{
guint32 payloadBits = gst_bit_reader_get_pos (br);
GstAV1ParserResult ret;
if (obu->obu_size > 0
&& obu->obu_type != GST_AV1_OBU_TILE_GROUP
&& obu->obu_type != GST_AV1_OBU_TILE_LIST
&& obu->obu_type != GST_AV1_OBU_FRAME) {
if (payloadBits >= obu->obu_size * 8)
return GST_AV1_PARSER_NO_MORE_DATA;
ret = av1_bitstreamfn_trailing_bits (br, obu->obu_size * 8 - payloadBits);
if (ret != GST_AV1_PARSER_OK)
return ret;
}
return GST_AV1_PARSER_OK;
}
static gboolean
av1_seq_level_idx_is_valid (GstAV1SeqLevels seq_level_idx)
{
return seq_level_idx == GST_AV1_SEQ_LEVEL_MAX
|| (seq_level_idx < GST_AV1_SEQ_LEVELS
/* The following levels are currently undefined. */
&& seq_level_idx != GST_AV1_SEQ_LEVEL_2_2
&& seq_level_idx != GST_AV1_SEQ_LEVEL_2_3
&& seq_level_idx != GST_AV1_SEQ_LEVEL_3_2
&& seq_level_idx != GST_AV1_SEQ_LEVEL_3_3
&& seq_level_idx != GST_AV1_SEQ_LEVEL_4_2
&& seq_level_idx != GST_AV1_SEQ_LEVEL_4_3
&& seq_level_idx != GST_AV1_SEQ_LEVEL_7_0
&& seq_level_idx != GST_AV1_SEQ_LEVEL_7_1
&& seq_level_idx != GST_AV1_SEQ_LEVEL_7_2
&& seq_level_idx != GST_AV1_SEQ_LEVEL_7_3);
}
static void
av1_parser_init_sequence_header (GstAV1SequenceHeaderOBU * seq_header)
{
memset (seq_header, 0, sizeof (*seq_header));
seq_header->bit_depth = 8;
seq_header->num_planes = 1;
}
/*************************************
* *
* Parser Functions *
* *
*************************************/
static void
gst_av1_parse_reset_state (GstAV1Parser * parser, gboolean free_sps)
{
parser->state.begin_first_frame = FALSE;
parser->state.prev_frame_id = 0;
parser->state.current_frame_id = 0;
memset (&parser->state.ref_info, 0, sizeof (parser->state.ref_info));
parser->state.frame_width = 0;
parser->state.frame_height = 0;
parser->state.upscaled_width = 0;
parser->state.mi_cols = 0;
parser->state.mi_rows = 0;
parser->state.render_width = 0;
parser->state.render_height = 0;
memset (parser->state.mi_col_starts, 0, sizeof (parser->state.mi_col_starts));
memset (parser->state.mi_row_starts, 0, sizeof (parser->state.mi_row_starts));
parser->state.tile_cols_log2 = 0;
parser->state.tile_cols = 0;
parser->state.tile_rows_log2 = 0;
parser->state.tile_rows = 0;
parser->state.tile_size_bytes = 0;
parser->state.seen_frame_header = 0;
if (free_sps) {
parser->state.sequence_changed = FALSE;
if (parser->seq_header) {
g_free (parser->seq_header);
parser->seq_header = NULL;
}
}
}
/**
* gst_av1_parser_reset:
* @parser: the #GstAV1Parser
* @annex_b: indicate whether conforms to annex b
*
* Reset the current #GstAV1Parser's state totally.
*
* Since: 1.18
*/
void
gst_av1_parser_reset (GstAV1Parser * parser, gboolean annex_b)
{
g_return_if_fail (parser != NULL);
parser->annex_b = annex_b;
if (parser->annex_b)
gst_av1_parser_reset_annex_b (parser);
gst_av1_parse_reset_state (parser, TRUE);
}
/**
* gst_av1_parser_reset_annex_b:
* @parser: the #GstAV1Parser
*
* Only reset the current #GstAV1Parser's annex b context.
* The other part of the state is kept.
*
* Since: 1.20
*/
void
gst_av1_parser_reset_annex_b (GstAV1Parser * parser)
{
g_return_if_fail (parser != NULL);
g_return_if_fail (parser->annex_b);
if (parser->temporal_unit_consumed < parser->temporal_unit_size)
GST_DEBUG ("temporal_unit_consumed: %d, temporal_unit_size:%d, "
"discard the left %d bytes for a temporal_unit.",
parser->temporal_unit_consumed, parser->temporal_unit_size,
parser->temporal_unit_size - parser->temporal_unit_consumed);
if (parser->frame_unit_consumed < parser->frame_unit_size)
GST_DEBUG (" frame_unit_consumed %d, frame_unit_size: %d "
"discard the left %d bytes for a frame_unit.",
parser->frame_unit_consumed, parser->frame_unit_size,
parser->frame_unit_size - parser->frame_unit_consumed);
parser->temporal_unit_consumed = 0;
parser->temporal_unit_size = 0;
parser->frame_unit_consumed = 0;
parser->frame_unit_size = 0;
}
/* 5.3.2 */
static GstAV1ParserResult
gst_av1_parse_obu_header (GstAV1Parser * parser, GstBitReader * br,
GstAV1OBUHeader * obu_header)
{
guint8 obu_forbidden_bit;
guint8 obu_reserved_1bit;
guint8 obu_extension_header_reserved_3bits;
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
if (AV1_REMAINING_BYTES (br) < 1) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
obu_forbidden_bit = AV1_READ_BIT (br);
if (obu_forbidden_bit != 0) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
obu_header->obu_type = AV1_READ_BITS (br, 4);
obu_header->obu_extention_flag = AV1_READ_BIT (br);
obu_header->obu_has_size_field = AV1_READ_BIT (br);
obu_reserved_1bit = AV1_READ_BIT (br);
if (obu_reserved_1bit != 0) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (obu_header->obu_extention_flag) {
if (AV1_REMAINING_BYTES (br) < 1) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
/* 5.3.3 OBU extension header */
obu_header->obu_temporal_id = AV1_READ_BITS (br, 3);
obu_header->obu_spatial_id = AV1_READ_BITS (br, 2);
obu_extension_header_reserved_3bits = AV1_READ_BITS (br, 3);
if (obu_extension_header_reserved_3bits != 0) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse OBU header error %d", ret);
return ret;
}
/**
* gst_av1_parser_identify_one_obu:
* @parser: the #GstAV1Parser
* @data: the data to parse
* @size: the size of @data
* @obu: a #GstAV1OBU to store the identified result
* @consumed: (out): the consumed data size
*
* Identify one @obu's type from the incoming data stream. This function
* should be called first to know the type of @obu before other parse APIs.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_identify_one_obu (GstAV1Parser * parser, const guint8 * data,
guint32 size, GstAV1OBU * obu, guint32 * consumed)
{
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
GstBitReader br;
guint obu_length = 0;
guint32 used;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (data != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (consumed != NULL, GST_AV1_PARSER_INVALID_OPERATION);
*consumed = 0;
memset (obu, 0, sizeof (*obu));
if (parser->annex_b) {
GST_LOG ("temporal_unit_consumed: %d, temporal_unit_size:%d,"
" frame_unit_consumed %d, frame_unit_size: %d",
parser->temporal_unit_consumed, parser->temporal_unit_size,
parser->frame_unit_consumed, parser->frame_unit_size);
}
if (!size) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
/* parse the data size if annex_b */
if (parser->annex_b) {
guint last_pos;
annex_b_again:
last_pos = 0;
if (*consumed > size)
goto error;
if (*consumed == size) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
gst_bit_reader_init (&br, data + *consumed, size - *consumed);
if (parser->temporal_unit_consumed > parser->temporal_unit_size)
goto error;
if (parser->temporal_unit_consumed &&
parser->temporal_unit_consumed == parser->temporal_unit_size) {
GST_LOG ("Complete a temporal unit of size %d",
parser->temporal_unit_size);
parser->temporal_unit_consumed = parser->temporal_unit_size = 0;
}
if (parser->temporal_unit_size == 0) {
parser->temporal_unit_size = av1_bitstreamfn_leb128 (&br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
g_assert (gst_bit_reader_get_pos (&br) % 8 == 0);
used = (gst_bit_reader_get_pos (&br) / 8 - last_pos);
last_pos = gst_bit_reader_get_pos (&br) / 8;
*consumed += used;
if (parser->temporal_unit_consumed == parser->temporal_unit_size) {
/* Some extreme case like a temporal unit just
hold a temporal_unit_size = 0 */
goto annex_b_again;
}
}
if (parser->frame_unit_consumed > parser->frame_unit_size)
goto error;
if (parser->frame_unit_consumed &&
parser->frame_unit_consumed == parser->frame_unit_size) {
GST_LOG ("Complete a frame unit of size %d", parser->frame_unit_size);
parser->frame_unit_size = parser->frame_unit_consumed = 0;
}
if (parser->frame_unit_size == 0) {
parser->frame_unit_size = av1_bitstreamfn_leb128 (&br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
g_assert (gst_bit_reader_get_pos (&br) % 8 == 0);
used = gst_bit_reader_get_pos (&br) / 8 - last_pos;
last_pos = gst_bit_reader_get_pos (&br) / 8;
*consumed += used;
parser->temporal_unit_consumed += used;
if (parser->frame_unit_size >
parser->temporal_unit_size - parser->temporal_unit_consumed) {
GST_INFO ("Error stream, frame unit size %d, bigger than the left"
"temporal unit size %d", parser->frame_unit_size,
parser->temporal_unit_size - parser->temporal_unit_consumed);
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (parser->temporal_unit_consumed == parser->temporal_unit_size ||
parser->frame_unit_consumed == parser->frame_unit_size) {
/* Some extreme case like a temporal unit just hold a frame_unit_size,
or a frame unit just hold frame_unit_size = 0 */
goto annex_b_again;
}
}
obu_length = av1_bitstreamfn_leb128 (&br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (obu_length > parser->frame_unit_size - parser->frame_unit_consumed) {
GST_INFO ("Error stream, obu_length is %d, bigger than the left"
"frame unit size %d", obu_length,
parser->frame_unit_size - parser->frame_unit_consumed);
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
/* update the consumed */
used = gst_bit_reader_get_pos (&br) / 8 - last_pos;
last_pos = gst_bit_reader_get_pos (&br) / 8;
*consumed += used;
parser->temporal_unit_consumed += used;
parser->frame_unit_consumed += used;
if (obu_length == 0) {
/* An empty obu? let continue to the next */
return GST_AV1_PARSER_DROP;
}
}
if (*consumed > size)
goto error;
if (*consumed == size) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
gst_bit_reader_init (&br, data + *consumed, size - *consumed);
ret = gst_av1_parse_obu_header (parser, &br, &obu->header);
if (ret != GST_AV1_PARSER_OK)
goto error;
obu->obu_type = obu->header.obu_type;
GST_LOG ("identify obu type is %d", obu->obu_type);
if (obu->header.obu_has_size_field) {
guint size_sz = gst_bit_reader_get_pos (&br) / 8;
obu->obu_size = av1_bitstreamfn_leb128 (&br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
size_sz = gst_bit_reader_get_pos (&br) / 8 - size_sz;
if (obu_length
&& obu_length - 1 - obu->header.obu_extention_flag - size_sz !=
obu->obu_size) {
/* If obu_size and obu_length are both present, but inconsistent,
then the packed bitstream is deemed invalid. */
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (AV1_REMAINING_BYTES (&br) < obu->obu_size) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
} else {
if (obu_length == 0) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
obu->obu_size = obu_length - 1 - obu->header.obu_extention_flag;
}
g_assert (gst_bit_reader_get_pos (&br) % 8 == 0);
used = gst_bit_reader_get_pos (&br) / 8;
/* fail if not a complete obu */
if (size - *consumed - used < obu->obu_size) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
/* update the consumed */
*consumed += used;
if (parser->annex_b) {
parser->temporal_unit_consumed += used;
parser->frame_unit_consumed += used;
}
obu->data = (guint8 *) (data + *consumed);
*consumed += obu->obu_size;
if (parser->annex_b) {
parser->temporal_unit_consumed += obu->obu_size;
parser->frame_unit_consumed += obu->obu_size;
}
if (obu->obu_type != GST_AV1_OBU_SEQUENCE_HEADER
&& obu->obu_type != GST_AV1_OBU_TEMPORAL_DELIMITER
&& parser->state.operating_point_idc && obu->header.obu_extention_flag) {
guint32 inTemporalLayer =
(parser->state.operating_point_idc >> obu->header.obu_temporal_id) & 1;
guint32 inSpatialLayer =
(parser->state.operating_point_idc >> (obu->header.obu_spatial_id +
8)) & 1;
if (!inTemporalLayer || !inSpatialLayer) {
return GST_AV1_PARSER_DROP;
}
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("can not identify obu, error %d", ret);
return ret;
}
/* 5.5.2 */
static GstAV1ParserResult
gst_av1_parse_color_config (GstAV1Parser * parser, GstBitReader * br,
GstAV1SequenceHeaderOBU * seq_header, GstAV1ColorConfig * color_config)
{
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
color_config->high_bitdepth = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (seq_header->seq_profile == GST_AV1_PROFILE_2
&& color_config->high_bitdepth) {
color_config->twelve_bit = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
seq_header->bit_depth = color_config->twelve_bit ? 12 : 10;
} else if (seq_header->seq_profile <= GST_AV1_PROFILE_2) {
seq_header->bit_depth = color_config->high_bitdepth ? 10 : 8;
} else {
GST_INFO ("Unsupported profile/bit-depth combination");
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (seq_header->seq_profile == GST_AV1_PROFILE_1)
color_config->mono_chrome = 0;
else {
color_config->mono_chrome = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
seq_header->num_planes = color_config->mono_chrome ? 1 : 3;
color_config->color_description_present_flag =
AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (color_config->color_description_present_flag) {
if (AV1_REMAINING_BITS (br) < 8 + 8 + 8) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
color_config->color_primaries = AV1_READ_BITS (br, 8);
color_config->transfer_characteristics = AV1_READ_BITS (br, 8);
color_config->matrix_coefficients = AV1_READ_BITS (br, 8);
} else {
color_config->color_primaries = GST_AV1_CP_UNSPECIFIED;
color_config->transfer_characteristics = GST_AV1_TC_UNSPECIFIED;
color_config->matrix_coefficients = GST_AV1_MC_UNSPECIFIED;
}
if (color_config->mono_chrome) {
color_config->color_range = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
color_config->subsampling_x = 1;
color_config->subsampling_y = 1;
color_config->chroma_sample_position = GST_AV1_CSP_UNKNOWN;
color_config->separate_uv_delta_q = 0;
goto success;
} else if (color_config->color_primaries == GST_AV1_CP_BT_709 &&
color_config->transfer_characteristics == GST_AV1_TC_SRGB &&
color_config->matrix_coefficients == GST_AV1_MC_IDENTITY) {
color_config->color_range = 1;
color_config->subsampling_x = 0;
color_config->subsampling_y = 0;
if (!(seq_header->seq_profile == GST_AV1_PROFILE_1 ||
(seq_header->seq_profile == GST_AV1_PROFILE_2
&& seq_header->bit_depth == 12))) {
GST_INFO ("sRGB colorspace not compatible with specified profile");
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
} else {
color_config->color_range = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (seq_header->seq_profile == GST_AV1_PROFILE_0) {
/* 420 only */
color_config->subsampling_x = 1;
color_config->subsampling_y = 1;
} else if (seq_header->seq_profile == GST_AV1_PROFILE_1) {
/* 444 only */
color_config->subsampling_x = 0;
color_config->subsampling_y = 0;
} else {
g_assert (seq_header->seq_profile == GST_AV1_PROFILE_2);
if (seq_header->bit_depth == 12) {
color_config->subsampling_x = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (color_config->subsampling_x) {
/* 422 or 420 */
color_config->subsampling_y = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
} else
/* 444 */
color_config->subsampling_y = 0;
} else {
/* 422 */
color_config->subsampling_x = 1;
color_config->subsampling_y = 0;
}
}
if (color_config->matrix_coefficients == GST_AV1_MC_IDENTITY &&
(color_config->subsampling_x || color_config->subsampling_y)) {
GST_INFO ("Identity CICP Matrix incompatible with"
" non 4:4:4 color sampling");
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (color_config->subsampling_x && color_config->subsampling_y) {
color_config->chroma_sample_position =
AV1_READ_BITS_CHECKED (br, 2, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
}
color_config->separate_uv_delta_q = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (!(color_config->subsampling_x == 0 && color_config->subsampling_y == 0) &&
!(color_config->subsampling_x == 1 && color_config->subsampling_y == 1) &&
!(color_config->subsampling_x == 1 && color_config->subsampling_y == 0)) {
GST_INFO ("Only 4:4:4, 4:2:2 and 4:2:0 are currently supported, "
"%d %d subsampling is not supported.\n",
color_config->subsampling_x, color_config->subsampling_y);
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse color config error %d", ret);
return ret;
}
/* 5.5.3 */
static GstAV1ParserResult
gst_av1_parse_timing_info (GstAV1Parser * parser, GstBitReader * br,
GstAV1TimingInfo * timing_info)
{
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
if (AV1_REMAINING_BITS (br) < 32 + 32 + 1) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
timing_info->num_units_in_display_tick = AV1_READ_UINT32 (br);
timing_info->time_scale = AV1_READ_UINT32 (br);
if (timing_info->num_units_in_display_tick == 0 ||
timing_info->time_scale == 0) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
timing_info->equal_picture_interval = AV1_READ_BIT (br);
if (timing_info->equal_picture_interval) {
timing_info->num_ticks_per_picture_minus_1 =
av1_bitstreamfn_uvlc (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (timing_info->num_ticks_per_picture_minus_1 == G_MAXUINT) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse timing info error %d", ret);
return ret;
}
/* 5.5.4 */
static GstAV1ParserResult
gst_av1_parse_decoder_model_info (GstAV1Parser * parser, GstBitReader * br,
GstAV1DecoderModelInfo * decoder_model_info)
{
if (AV1_REMAINING_BITS (br) < 5 + 32 + 5 + 5)
return GST_AV1_PARSER_NO_MORE_DATA;
decoder_model_info->buffer_delay_length_minus_1 = AV1_READ_BITS (br, 5);
decoder_model_info->num_units_in_decoding_tick = AV1_READ_BITS (br, 32);
decoder_model_info->buffer_removal_time_length_minus_1 =
AV1_READ_BITS (br, 5);
decoder_model_info->frame_presentation_time_length_minus_1 =
AV1_READ_BITS (br, 5);
return GST_AV1_PARSER_OK;
}
/* 5.5.5 */
static GstAV1ParserResult
gst_av1_parse_operating_parameters_info (GstAV1Parser * parser,
GstBitReader * br, GstAV1SequenceHeaderOBU * seq_header,
GstAV1OperatingPoint * op_point)
{
guint32 n = seq_header->decoder_model_info.buffer_delay_length_minus_1 + 1;
if (AV1_REMAINING_BITS (br) < n + n + 1)
return GST_AV1_PARSER_NO_MORE_DATA;
op_point->decoder_buffer_delay = AV1_READ_BITS (br, n);
op_point->encoder_buffer_delay = AV1_READ_BITS (br, n);
op_point->low_delay_mode_flag = AV1_READ_BIT (br);
return GST_AV1_PARSER_OK;
}
/* 5.5.1 General sequence header OBU */
/**
* gst_av1_parser_parse_sequence_header_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
* @seq_header: a #GstAV1SequenceHeaderOBU to store the parsed result.
*
* Parse one sequence header @obu based on the @parser context, store the
* result in the @seq_header.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_sequence_header_obu (GstAV1Parser * parser,
GstAV1OBU * obu, GstAV1SequenceHeaderOBU * seq_header)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
gint i;
GstBitReader bit_reader;
GstBitReader *br = &bit_reader;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_SEQUENCE_HEADER,
GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (seq_header != NULL, GST_AV1_PARSER_INVALID_OPERATION);
av1_parser_init_sequence_header (seq_header);
gst_bit_reader_init (br, obu->data, obu->obu_size);
if (AV1_REMAINING_BITS (br) < 8) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->seq_profile = AV1_READ_BITS (br, 3);
if (seq_header->seq_profile > GST_AV1_PROFILE_2) {
GST_INFO ("Unsupported profile %d", seq_header->seq_profile);
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
seq_header->still_picture = AV1_READ_BIT (br);
seq_header->reduced_still_picture_header = AV1_READ_BIT (br);
if (!seq_header->still_picture && seq_header->reduced_still_picture_header) {
GST_INFO (" If reduced_still_picture_header is equal to 1, it is a"
" requirement of bitstream conformance that still_picture is equal"
" to 1. ");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (seq_header->reduced_still_picture_header) {
seq_header->timing_info_present_flag = 0;
seq_header->decoder_model_info_present_flag = 0;
seq_header->initial_display_delay_present_flag = 0;
seq_header->operating_points_cnt_minus_1 = 0;
seq_header->operating_points[0].idc = 0;
seq_header->operating_points[0].seq_level_idx = AV1_READ_BITS (br, 5);
if (!av1_seq_level_idx_is_valid
(seq_header->operating_points[0].seq_level_idx)) {
GST_INFO ("The seq_level_idx is unsupported");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
seq_header->operating_points[0].seq_tier = 0;
seq_header->operating_points[0].decoder_model_present_for_this_op = 0;
seq_header->operating_points[0].initial_display_delay_present_for_this_op =
0;
} else {
seq_header->timing_info_present_flag = AV1_READ_BIT (br);
if (seq_header->timing_info_present_flag) {
retval =
gst_av1_parse_timing_info (parser, br, &(seq_header->timing_info));
if (retval != GST_AV1_PARSER_OK)
goto error;
seq_header->decoder_model_info_present_flag =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->decoder_model_info_present_flag) {
retval = gst_av1_parse_decoder_model_info (parser, br,
&(seq_header->decoder_model_info));
if (retval != GST_AV1_PARSER_OK)
goto error;
}
} else {
seq_header->decoder_model_info_present_flag = 0;
}
if (AV1_REMAINING_BITS (br) < 6) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->initial_display_delay_present_flag = AV1_READ_BIT (br);
seq_header->operating_points_cnt_minus_1 = AV1_READ_BITS (br, 5);
if (seq_header->operating_points_cnt_minus_1 + 1 >
GST_AV1_MAX_OPERATING_POINTS) {
GST_INFO ("The operating points number %d is too big",
seq_header->operating_points_cnt_minus_1 + 1);
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
for (i = 0; i < seq_header->operating_points_cnt_minus_1 + 1; i++) {
if (AV1_REMAINING_BITS (br) < 17) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->operating_points[i].idc = AV1_READ_BITS (br, 12);
seq_header->operating_points[i].seq_level_idx = AV1_READ_BITS (br, 5);
if (!av1_seq_level_idx_is_valid
(seq_header->operating_points[i].seq_level_idx)) {
GST_INFO ("The seq_level_idx is unsupported");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (seq_header->operating_points[i].seq_level_idx > GST_AV1_SEQ_LEVEL_3_3) {
seq_header->operating_points[i].seq_tier = AV1_READ_BIT (br);
} else {
seq_header->operating_points[i].seq_tier = 0;
}
if (seq_header->decoder_model_info_present_flag) {
seq_header->operating_points[i].decoder_model_present_for_this_op =
AV1_READ_BIT (br);
if (seq_header->operating_points[i].decoder_model_present_for_this_op)
retval =
gst_av1_parse_operating_parameters_info (parser, br, seq_header,
&(seq_header->operating_points[i]));
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
seq_header->operating_points[i].decoder_model_present_for_this_op = 0;
}
if (seq_header->initial_display_delay_present_flag) {
seq_header->
operating_points[i].initial_display_delay_present_for_this_op =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->
operating_points[i].initial_display_delay_present_for_this_op) {
seq_header->operating_points[i].initial_display_delay_minus_1 =
AV1_READ_BITS_CHECKED (br, 4, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->operating_points[i].initial_display_delay_minus_1 +
1 > 10) {
GST_INFO ("AV1 does not support more than 10 decoded frames delay");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
} else {
seq_header->operating_points[i].initial_display_delay_minus_1 = 9;
}
} else {
seq_header->
operating_points[i].initial_display_delay_present_for_this_op = 0;
seq_header->operating_points[i].initial_display_delay_minus_1 = 9;
}
}
}
/* Let user decide the operatingPoint,
implemented by calling gst_av1_parser_set_operating_point()
operatingPoint = choose_operating_point( )
operating_point_idc = operating_point_idc[ operatingPoint ] */
if (AV1_REMAINING_BITS (br) < 4 + 4 +
(seq_header->frame_width_bits_minus_1 + 1) +
(seq_header->frame_height_bits_minus_1 + 1)) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->frame_width_bits_minus_1 = AV1_READ_BITS (br, 4);
seq_header->frame_height_bits_minus_1 = AV1_READ_BITS (br, 4);
seq_header->max_frame_width_minus_1 =
AV1_READ_BITS (br, seq_header->frame_width_bits_minus_1 + 1);
seq_header->max_frame_height_minus_1 =
AV1_READ_BITS (br, seq_header->frame_height_bits_minus_1 + 1);
if (seq_header->reduced_still_picture_header)
seq_header->frame_id_numbers_present_flag = 0;
else {
seq_header->frame_id_numbers_present_flag =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (seq_header->frame_id_numbers_present_flag) {
if (AV1_REMAINING_BITS (br) < 4 + 3) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->delta_frame_id_length_minus_2 = AV1_READ_BITS (br, 4);
seq_header->additional_frame_id_length_minus_1 = AV1_READ_BITS (br, 3);
if (seq_header->additional_frame_id_length_minus_1 + 1 +
seq_header->delta_frame_id_length_minus_2 + 2 > 16) {
GST_INFO ("Invalid frame_id_length");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
if (AV1_REMAINING_BITS (br) < 3) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->use_128x128_superblock = AV1_READ_BIT (br);
seq_header->enable_filter_intra = AV1_READ_BIT (br);
seq_header->enable_intra_edge_filter = AV1_READ_BIT (br);
if (seq_header->reduced_still_picture_header) {
seq_header->enable_interintra_compound = 0;
seq_header->enable_masked_compound = 0;
seq_header->enable_warped_motion = 0;
seq_header->enable_dual_filter = 0;
seq_header->enable_order_hint = 0;
seq_header->enable_jnt_comp = 0;
seq_header->enable_ref_frame_mvs = 0;
seq_header->seq_force_screen_content_tools =
GST_AV1_SELECT_SCREEN_CONTENT_TOOLS;
seq_header->seq_force_integer_mv = GST_AV1_SELECT_INTEGER_MV;
seq_header->order_hint_bits_minus_1 = -1;
seq_header->order_hint_bits = 0;
} else {
if (AV1_REMAINING_BITS (br) < 5) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->enable_interintra_compound = AV1_READ_BIT (br);
seq_header->enable_masked_compound = AV1_READ_BIT (br);
seq_header->enable_warped_motion = AV1_READ_BIT (br);
seq_header->enable_dual_filter = AV1_READ_BIT (br);
seq_header->enable_order_hint = AV1_READ_BIT (br);
if (seq_header->enable_order_hint) {
if (AV1_REMAINING_BITS (br) < 2) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->enable_jnt_comp = AV1_READ_BIT (br);
seq_header->enable_ref_frame_mvs = AV1_READ_BIT (br);
} else {
seq_header->enable_jnt_comp = 0;
seq_header->enable_ref_frame_mvs = 0;
}
seq_header->seq_choose_screen_content_tools =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->seq_choose_screen_content_tools)
seq_header->seq_force_screen_content_tools =
GST_AV1_SELECT_SCREEN_CONTENT_TOOLS;
else {
seq_header->seq_force_screen_content_tools =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (seq_header->seq_force_screen_content_tools > 0) {
seq_header->seq_choose_integer_mv = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->seq_choose_integer_mv)
seq_header->seq_force_integer_mv = GST_AV1_SELECT_INTEGER_MV;
else {
seq_header->seq_force_integer_mv = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
} else {
seq_header->seq_force_integer_mv = GST_AV1_SELECT_INTEGER_MV;
}
if (seq_header->enable_order_hint) {
seq_header->order_hint_bits_minus_1 =
AV1_READ_BITS_CHECKED (br, 3, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
seq_header->order_hint_bits = seq_header->order_hint_bits_minus_1 + 1;
} else {
seq_header->order_hint_bits_minus_1 = -1;
seq_header->order_hint_bits = 0;
}
}
if (AV1_REMAINING_BITS (br) < 3) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
seq_header->enable_superres = AV1_READ_BIT (br);
seq_header->enable_cdef = AV1_READ_BIT (br);
seq_header->enable_restoration = AV1_READ_BIT (br);
retval = gst_av1_parse_color_config (parser, br, seq_header,
&seq_header->color_config);
if (retval != GST_AV1_PARSER_OK)
goto error;
seq_header->film_grain_params_present = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = av1_skip_trailing_bits (parser, br, obu);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (parser->seq_header) {
if (!memcmp (parser->seq_header, seq_header,
sizeof (GstAV1SequenceHeaderOBU)))
goto success;
g_free (parser->seq_header);
}
parser->seq_header = g_memdup2 (seq_header, sizeof (GstAV1SequenceHeaderOBU));
gst_av1_parse_reset_state (parser, FALSE);
/* choose_operating_point() set the operating_point */
if (parser->state.operating_point > seq_header->operating_points_cnt_minus_1) {
GST_WARNING ("Invalid operating_point %d set by user, just use 0",
parser->state.operating_point);
parser->state.operating_point_idc = seq_header->operating_points[0].idc;
} else {
parser->state.operating_point_idc =
seq_header->operating_points[parser->state.operating_point].idc;
}
parser->state.sequence_changed = TRUE;
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse sequence header error %d", retval);
return retval;
}
/* 5.6 */
/**
* gst_av1_parser_parse_temporal_delimiter_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
*
* Parse one temporal delimiter @obu based on the @parser context.
* The temporal delimiter is just delimiter and contains no content.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_temporal_delimiter_obu (GstAV1Parser * parser,
GstAV1OBU * obu)
{
GstBitReader bit_reader;
GstAV1ParserResult ret;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_TEMPORAL_DELIMITER,
GST_AV1_PARSER_INVALID_OPERATION);
gst_bit_reader_init (&bit_reader, obu->data, obu->obu_size);
parser->state.seen_frame_header = 0;
ret = av1_skip_trailing_bits (parser, &bit_reader, obu);
if (ret != GST_AV1_PARSER_OK)
GST_WARNING ("parse temporal delimiter error %d", ret);
return ret;
}
/* 5.8.2 */
static GstAV1ParserResult
gst_av1_parse_metadata_itut_t35 (GstAV1Parser * parser, GstBitReader * br,
GstAV1MetadataITUT_T35 * itut_t35)
{
GstAV1ParserResult ret;
itut_t35->itu_t_t35_country_code = AV1_READ_BITS_CHECKED (br, 8, &ret);
if (ret != GST_AV1_PARSER_OK)
return ret;
if (itut_t35->itu_t_t35_country_code == 0xFF) {
itut_t35->itu_t_t35_country_code_extention_byte =
AV1_READ_BITS_CHECKED (br, 8, &ret);
if (ret != GST_AV1_PARSER_OK)
return ret;
}
/* itu_t_t35_payload_bytes is not defined in specification.
Just skip this part. */
return GST_AV1_PARSER_OK;
}
/* 5.8.3 */
static GstAV1ParserResult
gst_av1_parse_metadata_hdr_cll (GstAV1Parser * parser, GstBitReader * br,
GstAV1MetadataHdrCll * hdr_cll)
{
if (AV1_REMAINING_BITS (br) < 32)
return GST_AV1_PARSER_NO_MORE_DATA;
hdr_cll->max_cll = AV1_READ_UINT16 (br);
hdr_cll->max_fall = AV1_READ_UINT16 (br);
return GST_AV1_PARSER_OK;
}
/* 5.8.4 */
static GstAV1ParserResult
gst_av1_parse_metadata_hdr_mdcv (GstAV1Parser * parser, GstBitReader * br,
GstAV1MetadataHdrMdcv * hdr_mdcv)
{
gint i;
if (AV1_REMAINING_BITS (br) < 3 * (16 + 16) + 16 + 16 + 32 + 32)
return GST_AV1_PARSER_NO_MORE_DATA;
for (i = 0; i < 3; i++) {
hdr_mdcv->primary_chromaticity_x[i] = AV1_READ_UINT16 (br);
hdr_mdcv->primary_chromaticity_y[i] = AV1_READ_UINT16 (br);
}
hdr_mdcv->white_point_chromaticity_x = AV1_READ_UINT16 (br);
hdr_mdcv->white_point_chromaticity_y = AV1_READ_UINT16 (br);
hdr_mdcv->luminance_max = AV1_READ_UINT32 (br);
hdr_mdcv->luminance_min = AV1_READ_UINT32 (br);
return GST_AV1_PARSER_OK;
}
/* 5.8.5 */
static GstAV1ParserResult
gst_av1_parse_metadata_scalability (GstAV1Parser * parser,
GstBitReader * br, GstAV1MetadataScalability * scalability)
{
gint i, j;
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
guint8 scalability_structure_reserved_3bits;
scalability->scalability_mode_idc = AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (scalability->scalability_mode_idc != GST_AV1_SCALABILITY_SS)
goto success;
if (AV1_REMAINING_BITS (br) < 8) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
/* 5.8.6 */
scalability->spatial_layers_cnt_minus_1 = AV1_READ_BITS (br, 2);
scalability->spatial_layer_dimensions_present_flag = AV1_READ_BIT (br);
scalability->spatial_layer_description_present_flag = AV1_READ_BIT (br);
scalability->temporal_group_description_present_flag = AV1_READ_BIT (br);
scalability_structure_reserved_3bits = AV1_READ_BITS (br, 3);
/* scalability_structure_reserved_3bits: must be set to zero and
be ignored by decoders. */
if (scalability_structure_reserved_3bits) {
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (scalability->spatial_layer_dimensions_present_flag) {
for (i = 0; i <= scalability->spatial_layers_cnt_minus_1; i++) {
if (AV1_REMAINING_BITS (br) < 16 * 2) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
scalability->spatial_layer_max_width[i] = AV1_READ_UINT16 (br);
scalability->spatial_layer_max_height[i] = AV1_READ_UINT16 (br);
}
}
if (scalability->spatial_layer_description_present_flag) {
for (i = 0; i <= scalability->spatial_layers_cnt_minus_1; i++) {
scalability->spatial_layer_ref_id[i] = AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
}
if (scalability->temporal_group_description_present_flag) {
scalability->temporal_group_size = AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
for (i = 0; i < scalability->temporal_group_size; i++) {
if (AV1_REMAINING_BITS (br) < 8) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
scalability->temporal_group_temporal_id[i] = AV1_READ_BITS (br, 3);
scalability->temporal_group_temporal_switching_up_point_flag[i] =
AV1_READ_BIT (br);
scalability->temporal_group_spatial_switching_up_point_flag[i] =
AV1_READ_BIT (br);
scalability->temporal_group_ref_cnt[i] = AV1_READ_BITS (br, 3);
for (j = 0; j < scalability->temporal_group_ref_cnt[i]; j++) {
scalability->temporal_group_ref_pic_diff[i][j] =
AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
}
}
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse metadata scalability error %d", ret);
return ret;
}
/* 5.8.7 */
static GstAV1ParserResult
gst_av1_parse_metadata_timecode (GstAV1Parser * parser, GstBitReader * br,
GstAV1MetadataTimecode * timecode)
{
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
if (AV1_REMAINING_BITS (br) < 17) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
timecode->counting_type = AV1_READ_BITS (br, 5);
timecode->full_timestamp_flag = AV1_READ_BIT (br);
timecode->discontinuity_flag = AV1_READ_BIT (br);
timecode->cnt_dropped_flag = AV1_READ_BIT (br);
timecode->n_frames = AV1_READ_BITS (br, 9);
if (timecode->full_timestamp_flag) {
if (AV1_REMAINING_BITS (br) < 17) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
timecode->seconds_value = AV1_READ_BITS (br, 6);
timecode->minutes_value = AV1_READ_BITS (br, 6);
timecode->hours_value = AV1_READ_BITS (br, 5);
} else {
timecode->seconds_flag = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (timecode->seconds_flag) {
if (AV1_REMAINING_BITS (br) < 7) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
timecode->seconds_value = AV1_READ_BITS (br, 6);
timecode->minutes_flag = AV1_READ_BIT (br);
if (timecode->minutes_flag) {
if (AV1_REMAINING_BITS (br) < 7) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
timecode->minutes_value = AV1_READ_BITS (br, 6);
timecode->hours_flag = AV1_READ_BIT (br);
if (timecode->hours_flag) {
timecode->hours_value = AV1_READ_BITS_CHECKED (br, 6, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
}
}
}
timecode->time_offset_length = AV1_READ_BITS_CHECKED (br, 5, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (timecode->time_offset_length > 0) {
timecode->time_offset_value =
AV1_READ_BITS_CHECKED (br, timecode->time_offset_length, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse metadata timecode error %d", ret);
return ret;
}
/* 5.8.1 */
/**
* gst_av1_parser_parse_metadata_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
* @metadata: a #GstAV1MetadataOBU to store the parsed result.
*
* Parse one meta data @obu based on the @parser context.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_metadata_obu (GstAV1Parser * parser, GstAV1OBU * obu,
GstAV1MetadataOBU * metadata)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
GstBitReader bit_reader;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_METADATA,
GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (metadata != NULL, GST_AV1_PARSER_INVALID_OPERATION);
gst_bit_reader_init (&bit_reader, obu->data, obu->obu_size);
memset (metadata, 0, sizeof (*metadata));
metadata->metadata_type = av1_bitstreamfn_leb128 (&bit_reader, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
switch (metadata->metadata_type) {
case GST_AV1_METADATA_TYPE_ITUT_T35:
retval = gst_av1_parse_metadata_itut_t35 (parser,
&bit_reader, &(metadata->itut_t35));
break;
case GST_AV1_METADATA_TYPE_HDR_CLL:
retval = gst_av1_parse_metadata_hdr_cll (parser,
&bit_reader, &(metadata->hdr_cll));
break;
case GST_AV1_METADATA_TYPE_HDR_MDCV:
retval = gst_av1_parse_metadata_hdr_mdcv (parser,
&bit_reader, &(metadata->hdr_mdcv));
break;
case GST_AV1_METADATA_TYPE_SCALABILITY:
retval = gst_av1_parse_metadata_scalability (parser,
&bit_reader, &(metadata->scalability));
break;
case GST_AV1_METADATA_TYPE_TIMECODE:
retval = gst_av1_parse_metadata_timecode (parser,
&bit_reader, &(metadata->timecode));
break;
default:
GST_WARNING ("Unknown metadata type %u", metadata->metadata_type);
return GST_AV1_PARSER_OK;
}
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = av1_skip_trailing_bits (parser, &bit_reader, obu);
if (retval != GST_AV1_PARSER_OK) {
GST_WARNING ("Metadata type %d may have wrong trailings.",
metadata->metadata_type);
retval = GST_AV1_PARSER_OK;
}
return retval;
error:
GST_WARNING ("parse metadata error %d", retval);
return retval;
}
/* 5.9.8 */
static GstAV1ParserResult
gst_av1_parse_superres_params_compute_image_size (GstAV1Parser * parser,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult ret;
GstAV1SequenceHeaderOBU *seq_header;
g_assert (parser->seq_header);
seq_header = parser->seq_header;
if (seq_header->enable_superres) {
frame_header->use_superres = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
return ret;
} else {
frame_header->use_superres = 0;
}
if (frame_header->use_superres) {
guint8 coded_denom;
coded_denom = AV1_READ_BITS_CHECKED (br, GST_AV1_SUPERRES_DENOM_BITS, &ret);
if (ret != GST_AV1_PARSER_OK)
return ret;
frame_header->superres_denom = coded_denom + GST_AV1_SUPERRES_DENOM_MIN;
} else {
frame_header->superres_denom = GST_AV1_SUPERRES_NUM;
}
parser->state.upscaled_width = parser->state.frame_width;
parser->state.frame_width =
(parser->state.upscaled_width * GST_AV1_SUPERRES_NUM +
(frame_header->superres_denom / 2)) / frame_header->superres_denom;
/* 5.9.9 compute_image_size */
parser->state.mi_cols = 2 * ((parser->state.frame_width + 7) >> 3);
parser->state.mi_rows = 2 * ((parser->state.frame_height + 7) >> 3);
return GST_AV1_PARSER_OK;
}
/* 5.9.5 */
static GstAV1ParserResult
gst_av1_parse_frame_size (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval;
GstAV1SequenceHeaderOBU *seq_header;
g_assert (parser->seq_header);
seq_header = parser->seq_header;
if (frame_header->frame_size_override_flag) {
guint16 frame_width_minus_1;
guint16 frame_height_minus_1;
if (AV1_REMAINING_BITS (br) <
seq_header->frame_width_bits_minus_1 + 1 +
seq_header->frame_height_bits_minus_1 + 1)
return GST_AV1_PARSER_NO_MORE_DATA;
frame_width_minus_1 =
AV1_READ_BITS (br, seq_header->frame_width_bits_minus_1 + 1);
frame_height_minus_1 =
AV1_READ_BITS (br, seq_header->frame_height_bits_minus_1 + 1);
parser->state.frame_width = frame_width_minus_1 + 1;
parser->state.frame_height = frame_height_minus_1 + 1;
} else {
parser->state.frame_width = seq_header->max_frame_width_minus_1 + 1;
parser->state.frame_height = seq_header->max_frame_height_minus_1 + 1;
}
retval = gst_av1_parse_superres_params_compute_image_size (parser, br,
frame_header);
return retval;
}
/* 5.9.6 */
static GstAV1ParserResult
gst_av1_parse_render_size (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval;
frame_header->render_and_frame_size_different =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
if (frame_header->render_and_frame_size_different) {
guint16 render_width_minus_1;
guint16 render_height_minus_1;
if (AV1_REMAINING_BITS (br) < 16 + 16)
return GST_AV1_PARSER_NO_MORE_DATA;
render_width_minus_1 = AV1_READ_UINT16 (br);
render_height_minus_1 = AV1_READ_UINT16 (br);
parser->state.render_width = render_width_minus_1 + 1;
parser->state.render_height = render_height_minus_1 + 1;
} else {
parser->state.render_width = parser->state.upscaled_width;
parser->state.render_height = parser->state.frame_height;
}
return GST_AV1_PARSER_OK;
}
/* 5.9.7 */
static GstAV1ParserResult
gst_av1_parse_frame_size_with_refs (GstAV1Parser * parser,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval;
GstAV1ReferenceFrameInfo *ref_info;
gboolean found_ref = FALSE;
gint i;
ref_info = &(parser->state.ref_info);
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
found_ref = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
if (found_ref == 1) {
gint ref_idx = frame_header->ref_frame_idx[i];
parser->state.upscaled_width =
ref_info->entry[ref_idx].ref_upscaled_width;
parser->state.frame_width = parser->state.upscaled_width;
parser->state.frame_height = ref_info->entry[ref_idx].ref_frame_height;
parser->state.render_width = ref_info->entry[ref_idx].ref_render_width;
parser->state.render_height = ref_info->entry[ref_idx].ref_render_height;
break;
}
}
if (found_ref == 0) {
retval = gst_av1_parse_frame_size (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
return retval;
retval = gst_av1_parse_render_size (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
return retval;
} else {
retval = gst_av1_parse_superres_params_compute_image_size (parser, br,
frame_header);
if (retval != GST_AV1_PARSER_OK)
return retval;
}
return GST_AV1_PARSER_OK;
}
/* 5.9.12 */
static GstAV1ParserResult
gst_av1_parse_quantization_params (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
GstAV1ColorConfig *color_config;
GstAV1QuantizationParams *quant_params = &(frame_header->quantization_params);
g_assert (parser->seq_header);
color_config = &(parser->seq_header->color_config);
quant_params->base_q_idx = AV1_READ_UINT8_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
frame_header->quantization_params.delta_q_y_dc =
av1_bitstreamfn_delta_q (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (parser->seq_header->num_planes > 1) {
if (color_config->separate_uv_delta_q) {
quant_params->diff_uv_delta = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
quant_params->diff_uv_delta = 0;
}
frame_header->quantization_params.delta_q_u_dc =
av1_bitstreamfn_delta_q (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
frame_header->quantization_params.delta_q_u_ac =
av1_bitstreamfn_delta_q (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (quant_params->diff_uv_delta) {
frame_header->quantization_params.delta_q_v_dc =
av1_bitstreamfn_delta_q (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
frame_header->quantization_params.delta_q_v_ac =
av1_bitstreamfn_delta_q (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
frame_header->quantization_params.delta_q_v_dc =
frame_header->quantization_params.delta_q_u_dc;
frame_header->quantization_params.delta_q_v_ac =
frame_header->quantization_params.delta_q_u_ac;
}
} else {
frame_header->quantization_params.delta_q_u_dc = 0;
frame_header->quantization_params.delta_q_u_ac = 0;
frame_header->quantization_params.delta_q_v_dc = 0;
frame_header->quantization_params.delta_q_v_ac = 0;
}
quant_params->using_qmatrix = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (quant_params->using_qmatrix) {
if (AV1_REMAINING_BITS (br) < 4 + 4) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
quant_params->qm_y = AV1_READ_BITS (br, 4);
quant_params->qm_u = AV1_READ_BITS (br, 4);
if (!color_config->separate_uv_delta_q) {
quant_params->qm_v = quant_params->qm_u;
} else {
quant_params->qm_v = AV1_READ_BITS_CHECKED (br, 4, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse quantization params error %d", retval);
return retval;
}
/* 5.9.14 */
static GstAV1ParserResult
gst_av1_parse_segmentation_params (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
gint i, j;
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
gint clipped_value /* clippedValue */ ;
GstAV1SegmenationParams *seg_params;
gint feature_value = 0;
const guint8 segmentation_feature_bits[GST_AV1_SEG_LVL_MAX] = {
8, 6, 6, 6, 6, 3, 0, 0
};
const guint8 segmentation_feature_signed[GST_AV1_SEG_LVL_MAX] = {
1, 1, 1, 1, 1, 0, 0, 0
};
const guint8 segmentation_feature_max[GST_AV1_SEG_LVL_MAX] = {
255, GST_AV1_MAX_LOOP_FILTER, GST_AV1_MAX_LOOP_FILTER,
GST_AV1_MAX_LOOP_FILTER, GST_AV1_MAX_LOOP_FILTER, 7, 0, 0
};
seg_params = &frame_header->segmentation_params;
seg_params->segmentation_enabled = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seg_params->segmentation_enabled) {
if (frame_header->primary_ref_frame == GST_AV1_PRIMARY_REF_NONE) {
seg_params->segmentation_update_map = 1;
seg_params->segmentation_temporal_update = 0;
seg_params->segmentation_update_data = 1;
} else {
seg_params->segmentation_update_map = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seg_params->segmentation_update_map) {
seg_params->segmentation_temporal_update =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
seg_params->segmentation_update_data = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (seg_params->segmentation_update_data) {
for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++) {
for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++) {
seg_params->feature_enabled[i][j] =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
clipped_value = 0;
feature_value = 0;
if (seg_params->feature_enabled[i][j]) {
gint bits_to_read = segmentation_feature_bits[j];
gint limit = segmentation_feature_max[j];
if (segmentation_feature_signed[j]) {
feature_value =
av1_bitstreamfn_su (br, 1 + bits_to_read, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
clipped_value = CLAMP (feature_value, limit * (-1), limit);
} else {
feature_value = AV1_READ_BITS_CHECKED (br, bits_to_read, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
clipped_value = CLAMP (feature_value, 0, limit);
}
}
seg_params->feature_data[i][j] = clipped_value;
}
}
} else {
/* Copy it from prime_ref */
g_assert (frame_header->primary_ref_frame != GST_AV1_PRIMARY_REF_NONE);
g_assert (parser->state.ref_info.
entry[frame_header->ref_frame_idx[frame_header->primary_ref_frame]].
ref_valid);
memcpy (seg_params,
&parser->state.ref_info.
entry[frame_header->ref_frame_idx[frame_header->
primary_ref_frame]].ref_segmentation_params,
sizeof (GstAV1SegmenationParams));
seg_params->segmentation_update_map = 0;
seg_params->segmentation_temporal_update = 0;
seg_params->segmentation_update_data = 0;
}
} else {
seg_params->segmentation_update_map = 0;
seg_params->segmentation_temporal_update = 0;
seg_params->segmentation_update_data = 0;
for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++) {
for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++) {
seg_params->feature_enabled[i][j] = 0;
seg_params->feature_data[i][j] = 0;
}
}
}
seg_params->seg_id_pre_skip = 0;
seg_params->last_active_seg_id = 0;
for (i = 0; i < GST_AV1_MAX_SEGMENTS; i++) {
for (j = 0; j < GST_AV1_SEG_LVL_MAX; j++) {
if (seg_params->feature_enabled[i][j]) {
seg_params->last_active_seg_id = i;
if (j >= GST_AV1_SEG_LVL_REF_FRAME) {
seg_params->seg_id_pre_skip = 1;
}
}
}
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse segmentation params error %d", retval);
return retval;
}
/* 5.9.15 */
static GstAV1ParserResult
gst_av1_parse_tile_info (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
GstAV1SequenceHeaderOBU *seq_header;
GstAV1TileInfo *tile_info;
gint i;
gint start_sb /* startSb */ ;
gint sb_cols /* sbCols */ ;
gint sb_rows /* sbRows */ ;
gint sb_shift /*sbShift */ ;
gint sb_size /* sbSize */ ;
gint max_tile_width_sb /* maxTileWidthSb */ ;
gint max_tile_height_sb /* maxTileHeightSb */ ;
gint max_tile_area_sb /* maxTileAreaSb */ ;
gint min_log2_tile_cols /* minLog2TileCols */ ;
gint max_log2_tile_cols /* maxLog2TileCols */ ;
gint min_log2_tile_rows /* minLog2TileRows */ ;
gint max_log2_tile_rows /* maxLog2TileRows */ ;
gint min_log2_tiles /* minLog2Tiles */ ;
gint tile_width_sb /* tileWidthSb */ ;
gint tile_height_sb /* tileHeightSb */ ;
gint max_width /* maxWidth */ , max_height /* maxHeight */ ;
gint size_sb /* sizeSb */ ;
gint widest_tile_sb /* widestTileSb */ ;
g_assert (parser->seq_header);
seq_header = parser->seq_header;
tile_info = &frame_header->tile_info;
sb_cols = seq_header->use_128x128_superblock ?
((parser->state.mi_cols + 31) >> 5) : ((parser->state.mi_cols + 15) >> 4);
sb_rows = seq_header->use_128x128_superblock ? ((parser->state.mi_rows +
31) >> 5) : ((parser->state.mi_rows + 15) >> 4);
sb_shift = seq_header->use_128x128_superblock ? 5 : 4;
sb_size = sb_shift + 2;
max_tile_width_sb = GST_AV1_MAX_TILE_WIDTH >> sb_size;
max_tile_area_sb = GST_AV1_MAX_TILE_AREA >> (2 * sb_size);
min_log2_tile_cols = av1_helper_tile_log2 (max_tile_width_sb, sb_cols);
max_log2_tile_cols = av1_helper_tile_log2 (1, MIN (sb_cols,
GST_AV1_MAX_TILE_COLS));
max_log2_tile_rows = av1_helper_tile_log2 (1, MIN (sb_rows,
GST_AV1_MAX_TILE_ROWS));
min_log2_tiles = MAX (min_log2_tile_cols,
av1_helper_tile_log2 (max_tile_area_sb, sb_rows * sb_cols));
tile_info->uniform_tile_spacing_flag = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (tile_info->uniform_tile_spacing_flag) {
parser->state.tile_cols_log2 = min_log2_tile_cols;
while (parser->state.tile_cols_log2 < max_log2_tile_cols) {
gint increment_tile_cols_log2 = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (increment_tile_cols_log2 == 1)
parser->state.tile_cols_log2++;
else
break;
}
tile_width_sb = (sb_cols + (1 << parser->state.tile_cols_log2) -
1) >> parser->state.tile_cols_log2;
i = 0;
for (start_sb = 0; start_sb < sb_cols; start_sb += tile_width_sb) {
parser->state.mi_col_starts[i] = start_sb << sb_shift;
i += 1;
}
parser->state.mi_col_starts[i] = parser->state.mi_cols;
parser->state.tile_cols = i;
while (i >= 1) {
tile_info->width_in_sbs_minus_1[i - 1] =
((parser->state.mi_col_starts[i] - parser->state.mi_col_starts[i - 1]
+ ((1 << sb_shift) - 1)) >> sb_shift) - 1;
i--;
}
min_log2_tile_rows = MAX (min_log2_tiles - parser->state.tile_cols_log2, 0);
parser->state.tile_rows_log2 = min_log2_tile_rows;
while (parser->state.tile_rows_log2 < max_log2_tile_rows) {
tile_info->increment_tile_rows_log2 = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (tile_info->increment_tile_rows_log2 == 1)
parser->state.tile_rows_log2++;
else
break;
}
tile_height_sb = (sb_rows + (1 << parser->state.tile_rows_log2) -
1) >> parser->state.tile_rows_log2;
i = 0;
for (start_sb = 0; start_sb < sb_rows; start_sb += tile_height_sb) {
parser->state.mi_row_starts[i] = start_sb << sb_shift;
i += 1;
}
parser->state.mi_row_starts[i] = parser->state.mi_rows;
parser->state.tile_rows = i;
while (i >= 1) {
tile_info->height_in_sbs_minus_1[i - 1] =
((parser->state.mi_row_starts[i] - parser->state.mi_row_starts[i - 1]
+ ((1 << sb_shift) - 1)) >> sb_shift) - 1;
i--;
}
} else {
widest_tile_sb = 0;
start_sb = 0;
for (i = 0; start_sb < sb_cols; i++) {
parser->state.mi_col_starts[i] = start_sb << sb_shift;
max_width = MIN (sb_cols - start_sb, max_tile_width_sb);
tile_info->width_in_sbs_minus_1[i] =
av1_bitstreamfn_ns (br, max_width, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
size_sb = tile_info->width_in_sbs_minus_1[i] + 1;
widest_tile_sb = MAX (size_sb, widest_tile_sb);
start_sb += size_sb;
}
parser->state.mi_col_starts[i] = parser->state.mi_cols;
parser->state.tile_cols = i;
parser->state.tile_cols_log2 =
av1_helper_tile_log2 (1, parser->state.tile_cols);
if (min_log2_tiles > 0)
max_tile_area_sb = (sb_rows * sb_cols) >> (min_log2_tiles + 1);
else
max_tile_area_sb = sb_rows * sb_cols;
max_tile_height_sb = MAX (max_tile_area_sb / widest_tile_sb, 1);
start_sb = 0;
for (i = 0; start_sb < sb_rows; i++) {
parser->state.mi_row_starts[i] = start_sb << sb_shift;
max_height = MIN (sb_rows - start_sb, max_tile_height_sb);
tile_info->height_in_sbs_minus_1[i] =
av1_bitstreamfn_ns (br, max_height, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
size_sb = tile_info->height_in_sbs_minus_1[i] + 1;
start_sb += size_sb;
}
parser->state.mi_row_starts[i] = parser->state.mi_rows;
parser->state.tile_rows = i;
parser->state.tile_rows_log2 =
av1_helper_tile_log2 (1, parser->state.tile_rows);
}
if (parser->state.tile_cols_log2 > 0 || parser->state.tile_rows_log2 > 0) {
tile_info->context_update_tile_id =
AV1_READ_BITS_CHECKED (br,
parser->state.tile_cols_log2 + parser->state.tile_rows_log2, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
tile_info->tile_size_bytes_minus_1 = AV1_READ_BITS_CHECKED (br, 2, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
parser->state.tile_size_bytes = tile_info->tile_size_bytes_minus_1 + 1;
} else {
tile_info->context_update_tile_id = 0;
}
memcpy (tile_info->mi_col_starts, parser->state.mi_col_starts,
sizeof (guint32) * (GST_AV1_MAX_TILE_COLS + 1));
memcpy (tile_info->mi_row_starts, parser->state.mi_row_starts,
sizeof (guint32) * (GST_AV1_MAX_TILE_ROWS + 1));
tile_info->tile_cols_log2 = parser->state.tile_cols_log2;
tile_info->tile_cols = parser->state.tile_cols;
tile_info->tile_rows_log2 = parser->state.tile_rows_log2;
tile_info->tile_rows = parser->state.tile_rows;
tile_info->tile_size_bytes = parser->state.tile_size_bytes;
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse tile info error %d", retval);
return retval;
}
static GstAV1ParserResult
gst_av1_parse_loop_filter_params (GstAV1Parser * parser,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
GstAV1LoopFilterParams *lf_params;
gint i;
guint8 update_ref_deltas = 0;
guint8 update_mode_deltas = 0;
g_assert (parser->seq_header);
lf_params = &frame_header->loop_filter_params;
if (frame_header->coded_lossless || frame_header->allow_intrabc) {
lf_params->loop_filter_level[0] = 0;
lf_params->loop_filter_level[1] = 0;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_INTRA_FRAME] = 1;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_LAST_FRAME] = 0;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_LAST2_FRAME] = 0;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_LAST3_FRAME] = 0;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_BWDREF_FRAME] = 0;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_GOLDEN_FRAME] = -1;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_ALTREF_FRAME] = -1;
lf_params->loop_filter_ref_deltas[GST_AV1_REF_ALTREF2_FRAME] = -1;
for (i = 0; i < 2; i++)
lf_params->loop_filter_mode_deltas[i] = 0;
goto success;
}
if (AV1_REMAINING_BITS (br) < 6 + 6) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
lf_params->loop_filter_level[0] = AV1_READ_BITS (br, 6);
lf_params->loop_filter_level[1] = AV1_READ_BITS (br, 6);
if (parser->seq_header->num_planes > 1) {
if (lf_params->loop_filter_level[0] || lf_params->loop_filter_level[1]) {
if (AV1_REMAINING_BITS (br) < 6 + 6) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
lf_params->loop_filter_level[2] = AV1_READ_BITS (br, 6);
lf_params->loop_filter_level[3] = AV1_READ_BITS (br, 6);
}
}
if (AV1_REMAINING_BITS (br) < 3 + 1) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
lf_params->loop_filter_sharpness = AV1_READ_BITS (br, 3);
lf_params->loop_filter_delta_enabled = AV1_READ_BIT (br);
if (lf_params->loop_filter_delta_enabled) {
lf_params->loop_filter_delta_update = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (lf_params->loop_filter_delta_update) {
for (i = 0; i < GST_AV1_TOTAL_REFS_PER_FRAME; i++) {
update_ref_deltas = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (update_ref_deltas) {
lf_params->loop_filter_ref_deltas[i] =
av1_bitstreamfn_su (br, 7, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
}
for (i = 0; i < 2; i++) {
update_mode_deltas = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (update_mode_deltas) {
lf_params->loop_filter_mode_deltas[i] =
av1_bitstreamfn_su (br, 7, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
}
}
}
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse loop filter params error %d", retval);
return retval;
}
/* 5.9.17 */
static GstAV1ParserResult
gst_av1_parse_delta_q_params (GstAV1Parser * parser,
GstBitReader * br, GstAV1QuantizationParams * quant_params)
{
GstAV1ParserResult retval;
quant_params->delta_q_res = 0;
quant_params->delta_q_present = 0;
if (quant_params->base_q_idx > 0) {
quant_params->delta_q_present = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
}
if (quant_params->delta_q_present) {
quant_params->delta_q_res = AV1_READ_BITS_CHECKED (br, 2, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
}
return GST_AV1_PARSER_OK;
}
/* 5.9.18 */
static GstAV1ParserResult
gst_av1_parse_delta_lf_params (GstAV1Parser * parser,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval;
GstAV1LoopFilterParams *lf_params;
lf_params = &frame_header->loop_filter_params;
lf_params->delta_lf_present = 0;
lf_params->delta_lf_res = 0;
lf_params->delta_lf_multi = 0;
if (frame_header->quantization_params.delta_q_present) {
if (!frame_header->allow_intrabc) {
lf_params->delta_lf_present = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
}
if (lf_params->delta_lf_present) {
if (AV1_REMAINING_BITS (br) < 2 + 1)
return GST_AV1_PARSER_NO_MORE_DATA;
lf_params->delta_lf_res = AV1_READ_BITS (br, 2);
lf_params->delta_lf_multi = AV1_READ_BIT (br);
}
}
return GST_AV1_PARSER_OK;
}
/* 5.9.19 */
static GstAV1ParserResult
gst_av1_parse_cdef_params (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1SequenceHeaderOBU *seq_header;
GstAV1CDEFParams *cdef_params;
guint8 cdef_damping_minus_3;
gint i;
g_assert (parser->seq_header);
cdef_params = &frame_header->cdef_params;
seq_header = parser->seq_header;
if (frame_header->coded_lossless || frame_header->allow_intrabc
|| !seq_header->enable_cdef) {
cdef_params->cdef_bits = 0;
cdef_params->cdef_y_pri_strength[0] = 0;
cdef_params->cdef_y_sec_strength[0] = 0;
cdef_params->cdef_uv_pri_strength[0] = 0;
cdef_params->cdef_uv_sec_strength[0] = 0;
cdef_params->cdef_damping = 3;
return GST_AV1_PARSER_OK;
}
if (AV1_REMAINING_BITS (br) < 2 + 2)
return GST_AV1_PARSER_NO_MORE_DATA;
cdef_damping_minus_3 = AV1_READ_BITS (br, 2);
cdef_params->cdef_damping = cdef_damping_minus_3 + 3;
cdef_params->cdef_bits = AV1_READ_BITS (br, 2);
for (i = 0; i < (1 << cdef_params->cdef_bits); i++) {
if (AV1_REMAINING_BITS (br) < 4 + 2)
return GST_AV1_PARSER_NO_MORE_DATA;
cdef_params->cdef_y_pri_strength[i] = AV1_READ_BITS (br, 4);
cdef_params->cdef_y_sec_strength[i] = AV1_READ_BITS (br, 2);
if (cdef_params->cdef_y_sec_strength[i] == 3)
cdef_params->cdef_y_sec_strength[i] += 1;
if (parser->seq_header->num_planes > 1) {
if (AV1_REMAINING_BITS (br) < 4 + 2)
return GST_AV1_PARSER_NO_MORE_DATA;
cdef_params->cdef_uv_pri_strength[i] = AV1_READ_BITS (br, 4);
cdef_params->cdef_uv_sec_strength[i] = AV1_READ_BITS (br, 2);
if (cdef_params->cdef_uv_sec_strength[i] == 3)
cdef_params->cdef_uv_sec_strength[i] += 1;
}
}
return GST_AV1_PARSER_OK;
}
/* 5.9.20 */
static GstAV1ParserResult
gst_av1_parse_loop_restoration_params (GstAV1Parser * parser,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1LoopRestorationParams *lr_params;
GstAV1SequenceHeaderOBU *seq_header;
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
guint8 lr_type;
gint i;
guint8 use_chroma_lr /* useChromaLr */ ;
const GstAV1FrameRestorationType remap_lr_type /* Remap_Lr_Type */ [4] = {
GST_AV1_FRAME_RESTORE_NONE,
GST_AV1_FRAME_RESTORE_SWITCHABLE,
GST_AV1_FRAME_RESTORE_WIENER, GST_AV1_FRAME_RESTORE_SGRPROJ
};
g_assert (parser->seq_header);
lr_params = &frame_header->loop_restoration_params;
seq_header = parser->seq_header;
if (frame_header->all_lossless || frame_header->allow_intrabc
|| !seq_header->enable_restoration) {
for (i = 0; i < GST_AV1_MAX_NUM_PLANES; i++)
lr_params->frame_restoration_type[i] = GST_AV1_FRAME_RESTORE_NONE;
lr_params->uses_lr = 0;
goto success;
}
lr_params->uses_lr = 0;
use_chroma_lr = 0;
for (i = 0; i < seq_header->num_planes; i++) {
lr_type = AV1_READ_BITS_CHECKED (br, 2, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
lr_params->frame_restoration_type[i] = remap_lr_type[lr_type];
if (lr_params->frame_restoration_type[i] != GST_AV1_FRAME_RESTORE_NONE) {
lr_params->uses_lr = 1;
if (i > 0) {
use_chroma_lr = 1;
}
}
}
if (lr_params->uses_lr) {
if (seq_header->use_128x128_superblock) {
lr_params->lr_unit_shift = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
lr_params->lr_unit_shift++;
} else {
guint8 lr_unit_extra_shift;
lr_params->lr_unit_shift = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (lr_params->lr_unit_shift) {
lr_unit_extra_shift = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
lr_params->lr_unit_shift += lr_unit_extra_shift;
}
}
lr_params->loop_restoration_size[0] =
GST_AV1_RESTORATION_TILESIZE_MAX >> (2 - lr_params->lr_unit_shift);
if (seq_header->color_config.subsampling_x
&& seq_header->color_config.subsampling_y && use_chroma_lr) {
lr_params->lr_uv_shift = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
lr_params->lr_uv_shift = 0;
}
lr_params->loop_restoration_size[1] =
lr_params->loop_restoration_size[0] >> lr_params->lr_uv_shift;
lr_params->loop_restoration_size[2] =
lr_params->loop_restoration_size[0] >> lr_params->lr_uv_shift;
}
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse loop restoration params error %d", retval);
return retval;
}
/* 5.9.21 */
static GstAV1ParserResult
gst_av1_parse_tx_mode (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval;
if (frame_header->coded_lossless == 1) {
frame_header->tx_mode = GST_AV1_TX_MODE_ONLY_4x4;
} else {
frame_header->tx_mode_select = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
if (frame_header->tx_mode_select) {
frame_header->tx_mode = GST_AV1_TX_MODE_SELECT;
} else {
frame_header->tx_mode = GST_AV1_TX_MODE_LARGEST;
}
}
return GST_AV1_PARSER_OK;
}
/* 5.9.3 */
static gint
gst_av1_get_relative_dist (GstAV1SequenceHeaderOBU * seq_header, gint a, gint b)
{
gint m, diff;
if (!seq_header->enable_order_hint)
return 0;
diff = a - b;
m = 1 << seq_header->order_hint_bits_minus_1;
diff = (diff & (m - 1)) - (diff & m);
return diff;
}
/* 5.9.22 */
static GstAV1ParserResult
gst_av1_parse_skip_mode_params (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ReferenceFrameInfo *ref_info;
GstAV1SequenceHeaderOBU *seq_header;
gint i;
gint skip_mode_allowed /* skipModeAllowed */ ;
GstAV1ParserResult retval;
g_assert (parser->seq_header);
seq_header = parser->seq_header;
ref_info = &(parser->state.ref_info);
skip_mode_allowed = 0;
if (frame_header->frame_is_intra || !frame_header->reference_select
|| !seq_header->enable_order_hint) {
skip_mode_allowed = 0;
} else {
gint forward_idx = -1 /* forwardIdx */ ;
gint forward_hint = 0 /* forwardHint */ ;
gint backward_idx = -1 /* backwardIdx */ ;
gint backward_hint = 0 /* backwardHint */ ;
gint ref_hint = 0 /* refHint */ ;
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
ref_hint = ref_info->entry[frame_header->ref_frame_idx[i]].ref_order_hint;
if (gst_av1_get_relative_dist (parser->seq_header, ref_hint,
frame_header->order_hint) < 0) {
if (forward_idx < 0
|| gst_av1_get_relative_dist (parser->seq_header, ref_hint,
forward_hint) > 0) {
forward_idx = i;
forward_hint = ref_hint;
}
} else
if (gst_av1_get_relative_dist (parser->seq_header, ref_hint,
frame_header->order_hint) > 0) {
if (backward_idx < 0
|| gst_av1_get_relative_dist (parser->seq_header, ref_hint,
backward_hint) < 0) {
backward_idx = i;
backward_hint = ref_hint;
}
}
}
if (forward_idx < 0) {
skip_mode_allowed = 0;
} else if (backward_idx >= 0) {
skip_mode_allowed = 1;
frame_header->skip_mode_frame[0] =
GST_AV1_REF_LAST_FRAME + MIN (forward_idx, backward_idx);
frame_header->skip_mode_frame[1] =
GST_AV1_REF_LAST_FRAME + MAX (forward_idx, backward_idx);
} else {
gint second_forward_idx = -1 /* secondForwardIdx */ ;
gint second_forward_hint = 0 /* secondForwardHint */ ;
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
ref_hint =
ref_info->entry[frame_header->ref_frame_idx[i]].ref_order_hint;
if (gst_av1_get_relative_dist (parser->seq_header, ref_hint,
forward_hint) < 0) {
if (second_forward_idx < 0
|| gst_av1_get_relative_dist (parser->seq_header, ref_hint,
second_forward_hint) > 0) {
second_forward_idx = i;
second_forward_hint = ref_hint;
}
}
}
if (second_forward_idx < 0) {
skip_mode_allowed = 0;
} else {
skip_mode_allowed = 1;
frame_header->skip_mode_frame[0] =
GST_AV1_REF_LAST_FRAME + MIN (forward_idx, second_forward_idx);
frame_header->skip_mode_frame[1] =
GST_AV1_REF_LAST_FRAME + MAX (forward_idx, second_forward_idx);
}
}
}
if (skip_mode_allowed) {
frame_header->skip_mode_present = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
return retval;
} else {
frame_header->skip_mode_present = 0;
}
return GST_AV1_PARSER_OK;
}
/* 5.9.28 */
static gint
gst_av1_decode_subexp (GstBitReader * br, gint numSyms,
GstAV1ParserResult * retval)
{
gint i = 0;
gint mk = 0;
gint k = 3;
gint subexp_final_bits = 0;
gint subexp_more_bits = 0;
gint subexp_bits = 0;
while (1) {
gint b2 = i ? k + i - 1 : k;
gint a = 1 << b2;
if (numSyms <= mk + 3 * a) {
subexp_final_bits = av1_bitstreamfn_ns (br, numSyms - mk, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
return subexp_final_bits + mk;
} else {
subexp_more_bits = AV1_READ_BITS_CHECKED (br, 1, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
if (subexp_more_bits) {
i++;
mk += a;
} else {
subexp_bits = AV1_READ_BITS_CHECKED (br, b2, retval);
if (*retval != GST_AV1_PARSER_OK)
return 0;
return subexp_bits + mk;
}
}
}
}
/* 5.9.27 */
static gint
gst_av1_decode_unsigned_subexp_with_ref (GstBitReader * br, gint mx,
gint r, GstAV1ParserResult * retval)
{
gint v;
v = gst_av1_decode_subexp (br, mx, retval);
if ((r << 1) <= mx) {
return av1_helper_inverse_recenter (r, v);
} else {
return mx - 1 - av1_helper_inverse_recenter (mx - 1 - r, v);
}
}
/* 5.9.26 */
static gint
gst_av1_decode_signed_subexp_with_ref (GstBitReader * br, gint low,
gint high, gint r, GstAV1ParserResult * retval)
{
return gst_av1_decode_unsigned_subexp_with_ref (br,
high - low, r - low, retval) + low;
}
/* 5.9.25 */
static GstAV1ParserResult
gst_av1_parse_global_param (GstAV1Parser * parser,
GstAV1FrameHeaderOBU * frame_header, GstBitReader * br,
GstAV1GlobalMotionParams * gm_params, GstAV1WarpModelType type,
gint32 prev_gm_params[GST_AV1_NUM_REF_FRAMES][6], gint ref, gint idx)
{
GstAV1ParserResult retval;
gint prec_diff /* precDiff */ , wm_round, mx, r;
gint abs_bits /* absBits */ = GST_AV1_GM_ABS_ALPHA_BITS;
gint prec_bits /* precBits */ = GST_AV1_GM_ALPHA_PREC_BITS;
gint sub;
if (idx < 2) {
if (type == GST_AV1_WARP_MODEL_TRANSLATION) {
abs_bits =
GST_AV1_GM_ABS_TRANS_ONLY_BITS -
(frame_header->allow_high_precision_mv ? 0 : 1);
prec_bits =
GST_AV1_GM_TRANS_ONLY_PREC_BITS -
(frame_header->allow_high_precision_mv ? 0 : 1);
} else {
abs_bits = GST_AV1_GM_ABS_TRANS_BITS;
prec_bits = GST_AV1_GM_TRANS_PREC_BITS;
}
}
prec_diff = GST_AV1_WARPEDMODEL_PREC_BITS - prec_bits;
wm_round = (idx % 3) == 2 ? (1 << GST_AV1_WARPEDMODEL_PREC_BITS) : 0;
sub = (idx % 3) == 2 ? (1 << prec_bits) : 0;
mx = (1 << abs_bits);
r = (prev_gm_params[ref][idx] >> prec_diff) - sub;
gm_params->gm_params[ref][idx] =
(gst_av1_decode_signed_subexp_with_ref (br, -mx, mx + 1, r,
&retval) << prec_diff) + wm_round;
if (retval != GST_AV1_PARSER_OK)
return retval;
return GST_AV1_PARSER_OK;
}
static gboolean
gst_av1_parser_is_shear_params_valid (gint32 gm_params[6])
{
const gint32 *mat = gm_params;
gint16 alpha, beta, gamma, delta;
gint16 shift;
gint16 y;
gint16 v;
guint i;
gboolean default_warp_params;
if (!(mat[2] > 0))
return FALSE;
default_warp_params = TRUE;
for (i = 0; i < 6; i++) {
if (gm_params[i] != ((i % 3 == 2) ? 1 << GST_AV1_WARPEDMODEL_PREC_BITS : 0)) {
default_warp_params = FALSE;
break;
}
}
if (default_warp_params)
return TRUE;
alpha = CLAMP (mat[2] - (1 << GST_AV1_WARPEDMODEL_PREC_BITS),
G_MININT16, G_MAXINT16);
beta = CLAMP (mat[3], G_MININT16, G_MAXINT16);
y = av1_helper_resolve_divisor_32 (ABS (mat[2]), &shift)
* (mat[2] < 0 ? -1 : 1);
v = ((gint64) mat[4] * (1 << GST_AV1_WARPEDMODEL_PREC_BITS)) * y;
gamma =
CLAMP ((gint) av1_helper_round_power_of_two_signed (v, shift), G_MININT16,
G_MAXINT16);
v = ((gint64) mat[3] * mat[4]) * y;
delta =
CLAMP (mat[5] - (gint) av1_helper_round_power_of_two_signed (v,
shift) - (1 << GST_AV1_WARPEDMODEL_PREC_BITS), G_MININT16,
G_MAXINT16);
alpha =
av1_helper_round_power_of_two_signed (alpha,
GST_AV1_WARP_PARAM_REDUCE_BITS) * (1 << GST_AV1_WARP_PARAM_REDUCE_BITS);
beta =
av1_helper_round_power_of_two_signed (beta,
GST_AV1_WARP_PARAM_REDUCE_BITS) * (1 << GST_AV1_WARP_PARAM_REDUCE_BITS);
gamma =
av1_helper_round_power_of_two_signed (gamma,
GST_AV1_WARP_PARAM_REDUCE_BITS) * (1 << GST_AV1_WARP_PARAM_REDUCE_BITS);
delta =
av1_helper_round_power_of_two_signed (delta,
GST_AV1_WARP_PARAM_REDUCE_BITS) * (1 << GST_AV1_WARP_PARAM_REDUCE_BITS);
if ((4 * ABS (alpha) + 7 * ABS (beta) >= (1 << GST_AV1_WARPEDMODEL_PREC_BITS))
|| (4 * ABS (gamma) + 4 * ABS (delta) >=
(1 << GST_AV1_WARPEDMODEL_PREC_BITS)))
return FALSE;
return TRUE;
}
/* 5.9.24 */
static GstAV1ParserResult
gst_av1_parse_global_motion_params (GstAV1Parser * parser,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1WarpModelType type;
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
gint i, ref;
GstAV1GlobalMotionParams *gm_params = &(frame_header->global_motion_params);
gint32 prev_gm_params[GST_AV1_NUM_REF_FRAMES][6] /* PrevGmParams */ ;
/* init value */
gm_params->gm_type[GST_AV1_REF_INTRA_FRAME] = GST_AV1_WARP_MODEL_IDENTITY;
for (ref = GST_AV1_REF_LAST_FRAME; ref <= GST_AV1_REF_ALTREF_FRAME; ref++) {
gm_params->invalid[ref] = 0;
gm_params->gm_type[ref] = GST_AV1_WARP_MODEL_IDENTITY;
for (i = 0; i < 6; i++) {
gm_params->gm_params[ref][i] =
((i % 3 == 2) ? 1 << GST_AV1_WARPEDMODEL_PREC_BITS : 0);
}
}
if (frame_header->frame_is_intra)
goto success;
if (frame_header->primary_ref_frame != GST_AV1_PRIMARY_REF_NONE) {
GstAV1GlobalMotionParams *ref_global_motion_params =
&parser->state.ref_info.entry[frame_header->
ref_frame_idx[frame_header->primary_ref_frame]].
ref_global_motion_params;
memcpy (prev_gm_params, ref_global_motion_params->gm_params,
sizeof (gint32) * GST_AV1_NUM_REF_FRAMES * 6);
} else {
for (ref = GST_AV1_REF_INTRA_FRAME; ref < GST_AV1_NUM_REF_FRAMES; ref++)
for (i = 0; i < 6; i++)
prev_gm_params[ref][i] =
((i % 3 == 2) ? 1 << GST_AV1_WARPEDMODEL_PREC_BITS : 0);
}
for (ref = GST_AV1_REF_LAST_FRAME; ref <= GST_AV1_REF_ALTREF_FRAME; ref++) {
gm_params->is_global[ref] = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (gm_params->is_global[ref]) {
gm_params->is_rot_zoom[ref] = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (gm_params->is_rot_zoom[ref]) {
type = GST_AV1_WARP_MODEL_ROTZOOM;
} else {
gm_params->is_translation[ref] = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
type =
gm_params->is_translation[ref] ? GST_AV1_WARP_MODEL_TRANSLATION :
GST_AV1_WARP_MODEL_AFFINE;
}
} else {
type = GST_AV1_WARP_MODEL_IDENTITY;
}
gm_params->gm_type[ref] = type;
if (type >= GST_AV1_WARP_MODEL_ROTZOOM) {
retval =
gst_av1_parse_global_param (parser, frame_header, br, gm_params, type,
prev_gm_params, ref, 2);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval =
gst_av1_parse_global_param (parser, frame_header, br, gm_params, type,
prev_gm_params, ref, 3);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (type == GST_AV1_WARP_MODEL_AFFINE) {
retval =
gst_av1_parse_global_param (parser, frame_header, br, gm_params,
type, prev_gm_params, ref, 4);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval =
gst_av1_parse_global_param (parser, frame_header, br, gm_params,
type, prev_gm_params, ref, 5);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
gm_params->gm_params[ref][4] = gm_params->gm_params[ref][3] * (-1);
gm_params->gm_params[ref][5] = gm_params->gm_params[ref][2];
}
}
if (type >= GST_AV1_WARP_MODEL_TRANSLATION) {
retval =
gst_av1_parse_global_param (parser, frame_header, br, gm_params, type,
prev_gm_params, ref, 0);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval =
gst_av1_parse_global_param (parser, frame_header, br, gm_params, type,
prev_gm_params, ref, 1);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (type <= GST_AV1_WARP_MODEL_AFFINE)
gm_params->invalid[ref] =
!gst_av1_parser_is_shear_params_valid (gm_params->gm_params[ref]);
}
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse global motion params error %d", retval);
return retval;
}
/* 5.9.30 */
static GstAV1ParserResult
gst_av1_parse_film_grain_params (GstAV1Parser * parser, GstBitReader * br,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1FilmGrainParams *fg_params;
GstAV1SequenceHeaderOBU *seq_header;
gint i;
gint num_pos_chroma /* numPosChroma */ , num_pos_luma /* numPosLuma */ ;
GstAV1ParserResult ret = GST_AV1_PARSER_OK;
g_assert (parser->seq_header);
fg_params = &frame_header->film_grain_params;
seq_header = parser->seq_header;
if (!seq_header->film_grain_params_present || (!frame_header->show_frame
&& !frame_header->showable_frame)) {
/* reset_grain_params() is a function call that indicates that all the
syntax elements read in film_grain_params should be set equal to 0. */
memset (fg_params, 0, sizeof (*fg_params));
goto success;
}
fg_params->apply_grain = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (!fg_params->apply_grain) {
/* reset_grain_params() */
memset (fg_params, 0, sizeof (*fg_params));
goto success;
}
fg_params->grain_seed = AV1_READ_UINT16_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
if (frame_header->frame_type == GST_AV1_INTER_FRAME) {
fg_params->update_grain = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
} else {
fg_params->update_grain = 1;
}
if (!fg_params->update_grain) {
guint16 temp_grain_seed /* tempGrainSeed */ ;
gint j;
gboolean found = FALSE;
fg_params->film_grain_params_ref_idx = AV1_READ_BITS_CHECKED (br, 3, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
for (j = 0; j < GST_AV1_REFS_PER_FRAME; j++) {
if (frame_header->ref_frame_idx[j] ==
fg_params->film_grain_params_ref_idx) {
found = TRUE;
break;
}
}
if (!found) {
GST_INFO ("Invalid film grain reference idx %d.",
fg_params->film_grain_params_ref_idx);
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (!parser->state.ref_info.entry[fg_params->film_grain_params_ref_idx].
ref_valid) {
GST_INFO ("Invalid ref info of film grain idx %d.",
fg_params->film_grain_params_ref_idx);
ret = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
temp_grain_seed = fg_params->grain_seed;
memcpy (fg_params,
&parser->state.ref_info.entry[fg_params->film_grain_params_ref_idx].
ref_film_grain_params, sizeof (GstAV1FilmGrainParams));
fg_params->grain_seed = temp_grain_seed;
goto success;
}
fg_params->num_y_points = AV1_READ_BITS_CHECKED (br, 4, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
for (i = 0; i < fg_params->num_y_points; i++) {
if (AV1_REMAINING_BITS (br) < 8 + 8) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->point_y_value[i] = AV1_READ_UINT8 (br);
fg_params->point_y_scaling[i] = AV1_READ_UINT8 (br);
}
if (seq_header->color_config.mono_chrome) {
fg_params->chroma_scaling_from_luma = 0;
} else {
fg_params->chroma_scaling_from_luma = AV1_READ_BIT_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
if (seq_header->color_config.mono_chrome
|| fg_params->chroma_scaling_from_luma
|| (seq_header->color_config.subsampling_x == 1
&& seq_header->color_config.subsampling_y == 1
&& fg_params->num_y_points == 0)) {
fg_params->num_cb_points = 0;
fg_params->num_cr_points = 0;
} else {
fg_params->num_cb_points = AV1_READ_BITS_CHECKED (br, 4, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
for (i = 0; i < fg_params->num_cb_points; i++) {
if (AV1_REMAINING_BITS (br) < 8 + 8) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->point_cb_value[i] = AV1_READ_UINT8 (br);
fg_params->point_cb_scaling[i] = AV1_READ_UINT8 (br);
}
fg_params->num_cr_points = AV1_READ_BITS_CHECKED (br, 4, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
for (i = 0; i < fg_params->num_cr_points; i++) {
if (AV1_REMAINING_BITS (br) < 8 + 8) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->point_cr_value[i] = AV1_READ_UINT8 (br);
fg_params->point_cr_scaling[i] = AV1_READ_UINT8 (br);
}
}
fg_params->grain_scaling_minus_8 = AV1_READ_BITS_CHECKED (br, 2, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
fg_params->ar_coeff_lag = AV1_READ_BITS_CHECKED (br, 2, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
num_pos_luma = 2 * fg_params->ar_coeff_lag * (fg_params->ar_coeff_lag + 1);
if (fg_params->num_y_points) {
num_pos_chroma = num_pos_luma + 1;
for (i = 0; i < num_pos_luma; i++) {
fg_params->ar_coeffs_y_plus_128[i] = AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
} else {
num_pos_chroma = num_pos_luma;
}
if (fg_params->chroma_scaling_from_luma || fg_params->num_cb_points) {
for (i = 0; i < num_pos_chroma; i++) {
fg_params->ar_coeffs_cb_plus_128[i] = AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
}
if (fg_params->chroma_scaling_from_luma || fg_params->num_cr_points) {
for (i = 0; i < num_pos_chroma; i++) {
fg_params->ar_coeffs_cr_plus_128[i] = AV1_READ_UINT8_CHECKED (br, &ret);
if (ret != GST_AV1_PARSER_OK)
goto error;
}
}
if (AV1_REMAINING_BITS (br) < 2 + 2) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->ar_coeff_shift_minus_6 = AV1_READ_BITS (br, 2);
fg_params->grain_scale_shift = AV1_READ_BITS (br, 2);
if (fg_params->num_cb_points) {
if (AV1_REMAINING_BITS (br) < 8 + 8 + 9) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->cb_mult = AV1_READ_BITS (br, 8);
fg_params->cb_luma_mult = AV1_READ_BITS (br, 8);
fg_params->cb_offset = AV1_READ_BITS (br, 9);
}
if (fg_params->num_cr_points) {
if (AV1_REMAINING_BITS (br) < 8 + 8 + 9) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->cr_mult = AV1_READ_BITS (br, 8);
fg_params->cr_luma_mult = AV1_READ_BITS (br, 8);
fg_params->cr_offset = AV1_READ_BITS (br, 9);
}
if (AV1_REMAINING_BITS (br) < 2) {
ret = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
fg_params->overlap_flag = AV1_READ_BIT (br);
fg_params->clip_to_restricted_range = AV1_READ_BIT (br);
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse film grain params error %d", ret);
return ret;
}
/* 5.9.4 */
static void
gst_av1_mark_ref_frames (GstAV1Parser * parser, GstBitReader * br, gint idLen)
{
GstAV1ReferenceFrameInfo *ref_info;
GstAV1SequenceHeaderOBU *seq_header;
gint i, diff_len /* diffLen */ ;
seq_header = parser->seq_header;
ref_info = &(parser->state.ref_info);
diff_len = seq_header->delta_frame_id_length_minus_2 + 2;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
if (parser->state.current_frame_id > (1 << diff_len)) {
if (ref_info->entry[i].ref_frame_id > parser->state.current_frame_id
|| ref_info->entry[i].ref_frame_id <
(parser->state.current_frame_id - (1 << diff_len)))
ref_info->entry[i].ref_valid = 0;
} else {
if (ref_info->entry[i].ref_frame_id > parser->state.current_frame_id
&& ref_info->entry[i].ref_frame_id <
((1 << idLen) + parser->state.current_frame_id - (1 << diff_len)))
ref_info->entry[i].ref_valid = 0;
}
}
}
/* 5.11.14 */
static gboolean
gst_av1_seg_feature_active_idx (GstAV1Parser * parser,
GstAV1FrameHeaderOBU * frame_header, gint idx, gint feature)
{
return frame_header->segmentation_params.segmentation_enabled
&& frame_header->segmentation_params.feature_enabled[idx][feature];
}
/* 7.12.2 */
static gint
gst_av1_get_qindex (GstAV1Parser * parser,
GstAV1FrameHeaderOBU * frame_header, gboolean ignoreDeltaQ, gint segmentId)
{
gint qindex;
if (gst_av1_seg_feature_active_idx (parser, frame_header, segmentId,
GST_AV1_SEG_LVL_ALT_Q)) {
gint data =
frame_header->
segmentation_params.feature_data[segmentId][GST_AV1_SEG_LVL_ALT_Q];
qindex = frame_header->quantization_params.base_q_idx + data;
if (ignoreDeltaQ == 0 && frame_header->quantization_params.delta_q_present)
qindex = qindex + frame_header->quantization_params.delta_q_res;
return CLAMP (qindex, 0, 255);
} else
return frame_header->quantization_params.base_q_idx;
}
/* 7.8 */
static void
gst_av1_set_frame_refs (GstAV1Parser * parser,
GstAV1SequenceHeaderOBU * seq_header, GstAV1FrameHeaderOBU * frame_header)
{
const GstAV1ReferenceFrame ref_frame_list[GST_AV1_REFS_PER_FRAME - 2] = {
GST_AV1_REF_LAST2_FRAME,
GST_AV1_REF_LAST3_FRAME,
GST_AV1_REF_BWDREF_FRAME,
GST_AV1_REF_ALTREF2_FRAME,
GST_AV1_REF_ALTREF_FRAME
};
gboolean used_frame[GST_AV1_NUM_REF_FRAMES];
gint shifted_order_hints[GST_AV1_NUM_REF_FRAMES];
gint cur_frame_hint = 1 << (seq_header->order_hint_bits - 1);
gint last_order_hint, earliest_order_hint;
gint ref, hint;
gint i, j;
g_assert (seq_header->enable_order_hint);
g_assert (seq_header->order_hint_bits_minus_1 >= 0);
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++)
frame_header->ref_frame_idx[i] = -1;
frame_header->ref_frame_idx[GST_AV1_REF_LAST_FRAME -
GST_AV1_REF_LAST_FRAME] = frame_header->last_frame_idx;
frame_header->ref_frame_idx[GST_AV1_REF_GOLDEN_FRAME -
GST_AV1_REF_LAST_FRAME] = frame_header->gold_frame_idx;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++)
used_frame[i] = 0;
used_frame[frame_header->last_frame_idx] = 1;
used_frame[frame_header->gold_frame_idx] = 1;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++)
shifted_order_hints[i] = cur_frame_hint +
gst_av1_get_relative_dist (seq_header,
parser->state.ref_info.entry[i].ref_order_hint,
frame_header->order_hint);
last_order_hint = shifted_order_hints[frame_header->last_frame_idx];
/* === Backward Reference Frames === */
/* The ALTREF_FRAME reference is set to be a backward
reference to the frame with highest output order. */
ref = -1;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
hint = shifted_order_hints[i];
if (!used_frame[i] && hint >= cur_frame_hint
&& (ref < 0 || hint >= last_order_hint)) {
ref = i;
last_order_hint = hint;
}
}
if (ref >= 0) {
frame_header->ref_frame_idx[GST_AV1_REF_ALTREF_FRAME -
GST_AV1_REF_LAST_FRAME] = ref;
used_frame[ref] = 1;
}
/* The BWDREF_FRAME reference is set to be a backward reference
to the closest frame. */
ref = -1;
earliest_order_hint = last_order_hint;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
hint = shifted_order_hints[i];
if (!used_frame[i] && hint >= cur_frame_hint
&& (ref < 0 || hint < earliest_order_hint)) {
ref = i;
earliest_order_hint = hint;
}
}
if (ref >= 0) {
frame_header->ref_frame_idx[GST_AV1_REF_BWDREF_FRAME -
GST_AV1_REF_LAST_FRAME] = ref;
used_frame[ref] = 1;
}
/* The ALTREF2_FRAME reference is set to the next closest
backward reference. */
ref = -1;
earliest_order_hint = last_order_hint;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
hint = shifted_order_hints[i];
if (!used_frame[i] && hint >= cur_frame_hint
&& (ref < 0 || hint < earliest_order_hint)) {
ref = i;
earliest_order_hint = hint;
}
}
if (ref >= 0) {
frame_header->ref_frame_idx[GST_AV1_REF_ALTREF2_FRAME -
GST_AV1_REF_LAST_FRAME] = ref;
used_frame[ref] = 1;
}
/* === Forward Reference Frames === */
/* The remaining references are set to be forward references
in anti-chronological order. */
last_order_hint = 0;
for (i = 0; i < GST_AV1_REFS_PER_FRAME - 2; i++) {
GstAV1ReferenceFrame ref_frame = ref_frame_list[i];
if (frame_header->ref_frame_idx[ref_frame - GST_AV1_REF_LAST_FRAME] < 0) {
ref = -1;
for (j = 0; j < GST_AV1_NUM_REF_FRAMES; j++) {
hint = shifted_order_hints[j];
if (!used_frame[j] && hint < cur_frame_hint &&
(ref < 0 || hint >= last_order_hint)) {
ref = j;
last_order_hint = hint;
}
}
if (ref >= 0) {
frame_header->ref_frame_idx[ref_frame - GST_AV1_REF_LAST_FRAME] = ref;
used_frame[ref] = 1;
}
}
}
/* Finally, any remaining references are set to the reference frame
with smallest output order. */
ref = -1;
earliest_order_hint = cur_frame_hint * 2;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
hint = shifted_order_hints[i];
if (ref < 0 || hint < earliest_order_hint) {
ref = i;
earliest_order_hint = hint;
}
}
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++)
if (frame_header->ref_frame_idx[i] < 0)
frame_header->ref_frame_idx[i] = ref;
}
/* 7.21 */
static void
gst_av1_parser_reference_frame_loading (GstAV1Parser * parser,
GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ReferenceFrameInfo *ref_info = &(parser->state.ref_info);
gint idx = frame_header->frame_to_show_map_idx;
GstAV1TileInfo *ref_tile_info = &ref_info->entry[idx].ref_tile_info;
const gint all_frames = (1 << GST_AV1_NUM_REF_FRAMES) - 1;
/* copy the relevant frame information as these will be needed by
* all subclasses. */
frame_header->frame_type = ref_info->entry[idx].ref_frame_type;
frame_header->upscaled_width = ref_info->entry[idx].ref_upscaled_width;
frame_header->frame_width = ref_info->entry[idx].ref_frame_width;
frame_header->frame_height = ref_info->entry[idx].ref_frame_height;
frame_header->render_width = ref_info->entry[idx].ref_render_width;
frame_header->render_height = ref_info->entry[idx].ref_render_height;
if (parser->seq_header->film_grain_params_present)
frame_header->film_grain_params =
ref_info->entry[idx].ref_film_grain_params;
/* the remaining is only relevant to ensure proper state update and only
* keyframe updates the state. */
if (frame_header->frame_type != GST_AV1_KEY_FRAME)
return;
frame_header->refresh_frame_flags = all_frames;
frame_header->current_frame_id = ref_info->entry[idx].ref_frame_id;
frame_header->order_hint = ref_info->entry[idx].ref_order_hint;
frame_header->segmentation_params =
ref_info->entry[idx].ref_segmentation_params;
frame_header->global_motion_params =
ref_info->entry[idx].ref_global_motion_params;
frame_header->loop_filter_params = ref_info->entry[idx].ref_lf_params;
frame_header->tile_info = *ref_tile_info;
parser->state.current_frame_id = ref_info->entry[idx].ref_frame_id;
parser->state.upscaled_width = ref_info->entry[idx].ref_upscaled_width;
parser->state.frame_width = ref_info->entry[idx].ref_frame_width;
parser->state.frame_height = ref_info->entry[idx].ref_frame_height;
parser->state.render_width = ref_info->entry[idx].ref_render_width;
parser->state.render_height = ref_info->entry[idx].ref_render_height;
parser->state.mi_cols = ref_info->entry[idx].ref_mi_cols;
parser->state.mi_rows = ref_info->entry[idx].ref_mi_rows;
memcpy (parser->state.mi_col_starts, ref_tile_info->mi_col_starts,
sizeof (guint32) * (GST_AV1_MAX_TILE_COLS + 1));
memcpy (parser->state.mi_row_starts, ref_tile_info->mi_row_starts,
sizeof (guint32) * (GST_AV1_MAX_TILE_ROWS + 1));
parser->state.tile_cols_log2 = ref_tile_info->tile_cols_log2;
parser->state.tile_cols = ref_tile_info->tile_cols;
parser->state.tile_rows_log2 = ref_tile_info->tile_rows_log2;
parser->state.tile_rows = ref_tile_info->tile_rows;
parser->state.tile_size_bytes = ref_tile_info->tile_size_bytes;
}
/* 5.9.2 */
static GstAV1ParserResult
gst_av1_parse_uncompressed_frame_header (GstAV1Parser * parser, GstAV1OBU * obu,
GstBitReader * br, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
GstAV1ReferenceFrameInfo *ref_info;
GstAV1SequenceHeaderOBU *seq_header;
gint i, op_num /* opNum */ ;
gint segment_id /* segmentId */ , all_frames /* allFrames */ ;
gint id_len /* idLen */ = 0;
if (!parser->seq_header) {
GST_WARNING ("Missing OBU Reference: seq_header");
retval = GST_AV1_PARSER_MISSING_OBU_REFERENCE;
goto error;
}
seq_header = parser->seq_header;
ref_info = &(parser->state.ref_info);
if (seq_header->frame_id_numbers_present_flag)
id_len = seq_header->additional_frame_id_length_minus_1 + 1 +
seq_header->delta_frame_id_length_minus_2 + 2;
all_frames = (1 << GST_AV1_NUM_REF_FRAMES) - 1;
if (seq_header->reduced_still_picture_header) {
frame_header->show_existing_frame = 0;
frame_header->frame_type = GST_AV1_KEY_FRAME;
frame_header->frame_is_intra = 1;
frame_header->show_frame = 1;
frame_header->showable_frame = 0;
if (parser->state.sequence_changed) {
/* This is the start of a new coded video sequence. */
parser->state.sequence_changed = 0;
parser->state.begin_first_frame = 1;
}
} else {
frame_header->show_existing_frame = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->show_existing_frame) {
if (parser->state.sequence_changed) {
GST_INFO ("New sequence header starts with a show_existing_frame.");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
frame_header->frame_to_show_map_idx =
AV1_READ_BITS_CHECKED (br, 3, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (!ref_info->entry[frame_header->frame_to_show_map_idx].ref_valid) {
GST_INFO ("The frame_to_show %d is invalid.",
frame_header->frame_to_show_map_idx);
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (seq_header->decoder_model_info_present_flag
&& !seq_header->timing_info.equal_picture_interval)
frame_header->frame_presentation_time =
AV1_READ_BITS_CHECKED (br,
seq_header->
decoder_model_info.frame_presentation_time_length_minus_1 + 1,
&retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
frame_header->refresh_frame_flags = 0;
if (seq_header->frame_id_numbers_present_flag) {
g_assert (id_len > 0);
frame_header->display_frame_id =
AV1_READ_BITS_CHECKED (br, id_len, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->display_frame_id !=
ref_info->entry[frame_header->frame_to_show_map_idx].ref_frame_id) {
GST_INFO ("Reference frame ID mismatch");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
gst_av1_parser_reference_frame_loading (parser, frame_header);
goto success;
}
frame_header->frame_type = AV1_READ_BITS_CHECKED (br, 2, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (parser->state.sequence_changed) {
if (frame_header->frame_type == GST_AV1_KEY_FRAME) {
/* This is the start of a new coded video sequence. */
parser->state.sequence_changed = FALSE;
parser->state.begin_first_frame = TRUE;
} else {
GST_INFO ("Sequence header has changed without a keyframe.");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
frame_header->frame_is_intra =
(frame_header->frame_type == GST_AV1_INTRA_ONLY_FRAME
|| frame_header->frame_type == GST_AV1_KEY_FRAME);
frame_header->show_frame = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->still_picture &&
(frame_header->frame_type != GST_AV1_KEY_FRAME
|| !frame_header->show_frame)) {
GST_INFO ("Still pictures must be coded as shown keyframes");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (frame_header->show_frame
&& seq_header->decoder_model_info_present_flag
&& !seq_header->timing_info.equal_picture_interval) {
frame_header->frame_presentation_time =
AV1_READ_BITS_CHECKED (br,
seq_header->decoder_model_info.
frame_presentation_time_length_minus_1 + 1, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (frame_header->show_frame) {
frame_header->showable_frame =
(frame_header->frame_type != GST_AV1_KEY_FRAME);
} else {
frame_header->showable_frame = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (frame_header->frame_type == GST_AV1_SWITCH_FRAME
|| (frame_header->frame_type == GST_AV1_KEY_FRAME
&& frame_header->show_frame))
frame_header->error_resilient_mode = 1;
else {
frame_header->error_resilient_mode = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
}
if (frame_header->frame_type == GST_AV1_KEY_FRAME && frame_header->show_frame) {
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
ref_info->entry[i].ref_valid = 0;
ref_info->entry[i].ref_order_hint = 0;
}
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
frame_header->order_hints[GST_AV1_REF_LAST_FRAME + i] = 0;
}
}
frame_header->disable_cdf_update = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (seq_header->seq_force_screen_content_tools ==
GST_AV1_SELECT_SCREEN_CONTENT_TOOLS) {
frame_header->allow_screen_content_tools =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
frame_header->allow_screen_content_tools =
seq_header->seq_force_screen_content_tools;
}
if (frame_header->allow_screen_content_tools) {
if (seq_header->seq_force_integer_mv == GST_AV1_SELECT_INTEGER_MV) {
frame_header->force_integer_mv = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
frame_header->force_integer_mv = seq_header->seq_force_integer_mv;
}
} else {
frame_header->force_integer_mv = 0;
}
if (frame_header->frame_is_intra) {
frame_header->force_integer_mv = 1;
}
if (seq_header->frame_id_numbers_present_flag) {
gboolean have_prev_frame_id =
!parser->state.begin_first_frame &&
(!(frame_header->frame_type == GST_AV1_KEY_FRAME
&& frame_header->show_frame));
if (have_prev_frame_id)
parser->state.prev_frame_id = parser->state.current_frame_id;
g_assert (id_len > 0);
frame_header->current_frame_id =
AV1_READ_BITS_CHECKED (br, id_len, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
parser->state.current_frame_id = frame_header->current_frame_id;
/* Check whether the id and id diff is valid */
if (have_prev_frame_id) {
gint32 diff_frame_id;
if (parser->state.current_frame_id > parser->state.prev_frame_id) {
diff_frame_id =
parser->state.current_frame_id - parser->state.prev_frame_id;
} else {
diff_frame_id = (1 << id_len) +
parser->state.current_frame_id - parser->state.prev_frame_id;
}
if (parser->state.current_frame_id == parser->state.prev_frame_id ||
diff_frame_id >= (1 << (id_len - 1))) {
GST_INFO ("Invalid value of current_frame_id");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
gst_av1_mark_ref_frames (parser, br, id_len);
} else {
frame_header->current_frame_id = 0;
parser->state.prev_frame_id = parser->state.current_frame_id;
parser->state.current_frame_id = frame_header->current_frame_id;
}
if (frame_header->frame_type == GST_AV1_SWITCH_FRAME) {
frame_header->frame_size_override_flag = 1;
} else if (seq_header->reduced_still_picture_header) {
frame_header->frame_size_override_flag = 0;
} else {
frame_header->frame_size_override_flag = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
frame_header->order_hint =
AV1_READ_BITS_CHECKED (br, seq_header->order_hint_bits_minus_1 + 1,
&retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->frame_is_intra || frame_header->error_resilient_mode) {
frame_header->primary_ref_frame = GST_AV1_PRIMARY_REF_NONE;
} else {
frame_header->primary_ref_frame = AV1_READ_BITS_CHECKED (br, 3, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (seq_header->decoder_model_info_present_flag) {
frame_header->buffer_removal_time_present_flag =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->buffer_removal_time_present_flag) {
for (op_num = 0; op_num <= seq_header->operating_points_cnt_minus_1;
op_num++) {
if (seq_header->
operating_points[op_num].decoder_model_present_for_this_op) {
gint op_pt_idc = seq_header->operating_points[op_num].idc;
gint in_temporal_layer =
(op_pt_idc >> obu->header.obu_temporal_id) & 1;
gint in_spatial_layer =
(op_pt_idc >> (obu->header.obu_spatial_id + 8)) & 1;
if (op_pt_idc == 0 || (in_temporal_layer && in_spatial_layer)) {
frame_header->buffer_removal_time[op_num] =
AV1_READ_BITS_CHECKED (br,
seq_header->decoder_model_info.
buffer_removal_time_length_minus_1 + 1, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
frame_header->buffer_removal_time[op_num] = 0;
}
} else {
frame_header->buffer_removal_time[op_num] = 0;
}
}
}
}
frame_header->allow_high_precision_mv = 0;
frame_header->use_ref_frame_mvs = 0;
frame_header->allow_intrabc = 0;
if (frame_header->frame_type == GST_AV1_SWITCH_FRAME ||
(frame_header->frame_type == GST_AV1_KEY_FRAME
&& frame_header->show_frame)) {
frame_header->refresh_frame_flags = all_frames;
} else {
frame_header->refresh_frame_flags = AV1_READ_UINT8_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (frame_header->frame_type == GST_AV1_INTRA_ONLY_FRAME) {
if (frame_header->refresh_frame_flags == 0xFF) {
GST_INFO ("Intra only frames cannot have refresh flags 0xFF");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
if (!frame_header->frame_is_intra
|| frame_header->refresh_frame_flags != all_frames) {
if (frame_header->error_resilient_mode && seq_header->enable_order_hint) {
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
frame_header->ref_order_hint[i] = AV1_READ_BITS_CHECKED (br,
seq_header->order_hint_bits_minus_1 + 1, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->ref_order_hint[i] !=
ref_info->entry[i].ref_order_hint)
ref_info->entry[i].ref_valid = 0;
}
}
}
if (frame_header->frame_is_intra) {
retval = gst_av1_parse_frame_size (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_render_size (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->allow_screen_content_tools
&& parser->state.upscaled_width == parser->state.frame_width) {
frame_header->allow_intrabc = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
frame_header->upscaled_width = parser->state.upscaled_width;
frame_header->frame_width = parser->state.frame_width;
frame_header->frame_height = parser->state.frame_height;
frame_header->render_width = parser->state.render_width;
frame_header->render_height = parser->state.render_height;
} else {
if (!seq_header->enable_order_hint) {
frame_header->frame_refs_short_signaling = 0;
} else {
frame_header->frame_refs_short_signaling =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->frame_refs_short_signaling) {
if (AV1_REMAINING_BITS (br) < 3 + 3) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
frame_header->last_frame_idx = AV1_READ_BITS (br, 3);
frame_header->gold_frame_idx = AV1_READ_BITS (br, 3);
gst_av1_set_frame_refs (parser, seq_header, frame_header);
}
}
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
if (!frame_header->frame_refs_short_signaling) {
frame_header->ref_frame_idx[i] = AV1_READ_BITS_CHECKED (br, 3, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (seq_header->frame_id_numbers_present_flag) {
gint32 delta_frame_id /* DeltaFrameId */ ;
gint32 expected_frame_id;
guint32 delta_frame_id_minus_1;
g_assert (id_len > 0);
delta_frame_id_minus_1 = AV1_READ_BITS_CHECKED (br,
seq_header->delta_frame_id_length_minus_2 + 2, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
delta_frame_id = delta_frame_id_minus_1 + 1;
expected_frame_id = (frame_header->current_frame_id + (1 << id_len) -
delta_frame_id) % (1 << id_len);
if (expected_frame_id !=
parser->state.ref_info.entry[frame_header->
ref_frame_idx[i]].ref_frame_id) {
GST_INFO ("Reference buffer frame ID mismatch, expectedFrameId"
" is %d wihle ref frame id is %d", expected_frame_id,
parser->state.ref_info.entry[frame_header->
ref_frame_idx[i]].ref_frame_id);
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
}
}
if (frame_header->frame_size_override_flag
&& !frame_header->error_resilient_mode) {
retval = gst_av1_parse_frame_size_with_refs (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
} else {
retval = gst_av1_parse_frame_size (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_render_size (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
frame_header->upscaled_width = parser->state.upscaled_width;
frame_header->frame_width = parser->state.frame_width;
frame_header->frame_height = parser->state.frame_height;
frame_header->render_width = parser->state.render_width;
frame_header->render_height = parser->state.render_height;
if (frame_header->force_integer_mv) {
frame_header->allow_high_precision_mv = 0;
} else {
frame_header->allow_high_precision_mv =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
/* read_interpolation_filter() expand */
frame_header->is_filter_switchable = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->is_filter_switchable) {
frame_header->interpolation_filter =
GST_AV1_INTERPOLATION_FILTER_SWITCHABLE;
} else {
frame_header->interpolation_filter =
AV1_READ_BITS_CHECKED (br, 2, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
frame_header->is_motion_mode_switchable =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->error_resilient_mode || !seq_header->enable_ref_frame_mvs) {
frame_header->use_ref_frame_mvs = 0;
} else {
frame_header->use_ref_frame_mvs = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
}
if (!frame_header->frame_is_intra) {
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++) {
gint refFrame = GST_AV1_REF_LAST_FRAME + i;
gint hint =
ref_info->entry[frame_header->ref_frame_idx[i]].ref_order_hint;
frame_header->order_hints[refFrame] = hint;
if (!seq_header->enable_order_hint) {
frame_header->ref_frame_sign_bias[refFrame] = 0;
} else {
frame_header->ref_frame_sign_bias[refFrame] =
(gst_av1_get_relative_dist (parser->seq_header, hint,
frame_header->order_hint) > 0);
}
}
}
if (seq_header->reduced_still_picture_header
|| frame_header->disable_cdf_update)
frame_header->disable_frame_end_update_cdf = 1;
else {
frame_header->disable_frame_end_update_cdf =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (frame_header->primary_ref_frame != GST_AV1_PRIMARY_REF_NONE &&
!ref_info->entry[frame_header->ref_frame_idx[frame_header->
primary_ref_frame]].ref_valid) {
GST_INFO ("Primary ref point to an invalid frame");
retval = GST_AV1_PARSER_BITSTREAM_ERROR;
goto error;
}
if (frame_header->primary_ref_frame == GST_AV1_PRIMARY_REF_NONE) {
/* do something in setup_past_independence() of parser level */
gint8 *loop_filter_ref_deltas =
frame_header->loop_filter_params.loop_filter_ref_deltas;
frame_header->loop_filter_params.loop_filter_delta_enabled = 1;
loop_filter_ref_deltas[GST_AV1_REF_INTRA_FRAME] = 1;
loop_filter_ref_deltas[GST_AV1_REF_LAST_FRAME] = 0;
loop_filter_ref_deltas[GST_AV1_REF_LAST2_FRAME] = 0;
loop_filter_ref_deltas[GST_AV1_REF_LAST3_FRAME] = 0;
loop_filter_ref_deltas[GST_AV1_REF_BWDREF_FRAME] = 0;
loop_filter_ref_deltas[GST_AV1_REF_GOLDEN_FRAME] = -1;
loop_filter_ref_deltas[GST_AV1_REF_ALTREF_FRAME] = -1;
loop_filter_ref_deltas[GST_AV1_REF_ALTREF2_FRAME] = -1;
frame_header->loop_filter_params.loop_filter_mode_deltas[0] = 0;
frame_header->loop_filter_params.loop_filter_mode_deltas[1] = 0;
} else {
/* do something in load_previous() of parser level */
/* load_loop_filter_params() */
GstAV1LoopFilterParams *ref_lf_params =
&parser->state.ref_info.entry[frame_header->
ref_frame_idx[frame_header->primary_ref_frame]].ref_lf_params;
gint8 *loop_filter_ref_deltas =
frame_header->loop_filter_params.loop_filter_ref_deltas;
/* Copy all from prime_ref */
g_assert (parser->state.ref_info.
entry[frame_header->ref_frame_idx[frame_header->primary_ref_frame]].
ref_valid);
loop_filter_ref_deltas[GST_AV1_REF_INTRA_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_INTRA_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_LAST_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_LAST_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_LAST2_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_LAST2_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_LAST3_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_LAST3_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_BWDREF_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_BWDREF_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_GOLDEN_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_GOLDEN_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_ALTREF2_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_ALTREF2_FRAME];
loop_filter_ref_deltas[GST_AV1_REF_ALTREF_FRAME] =
ref_lf_params->loop_filter_ref_deltas[GST_AV1_REF_ALTREF_FRAME];
for (i = 0; i < 2; i++)
frame_header->loop_filter_params.loop_filter_mode_deltas[i] =
ref_lf_params->loop_filter_mode_deltas[i];
}
/* @TODO:
if ( primary_ref_frame == PRIMARY_REF_NONE ) {
init_non_coeff_cdfs( )
} else {
load_cdfs( ref_frame_idx[primary_ref_frame] )
}
*/
/* @TODO:
if ( use_ref_frame_mvs == 1 )
motion_field_estimation( )
*/
retval = gst_av1_parse_tile_info (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_quantization_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_segmentation_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_delta_q_params (parser, br,
&(frame_header->quantization_params));
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_delta_lf_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
/* @TODO:
if ( primary_ref_frame == PRIMARY_REF_NONE ) {
init_coeff_cdfs( )
} else {
load_previous_segment_ids( )
}
*/
frame_header->coded_lossless = 1;
for (segment_id = 0; segment_id < GST_AV1_MAX_SEGMENTS; segment_id++) {
gint qindex = gst_av1_get_qindex (parser, frame_header, 1, segment_id);
frame_header->lossless_array[segment_id] = (qindex == 0)
&& (frame_header->quantization_params.delta_q_y_dc == 0)
&& (frame_header->quantization_params.delta_q_u_ac == 0)
&& (frame_header->quantization_params.delta_q_u_dc == 0)
&& (frame_header->quantization_params.delta_q_v_ac == 0)
&& (frame_header->quantization_params.delta_q_v_dc == 0);
if (!frame_header->lossless_array[segment_id])
frame_header->coded_lossless = 0;
if (frame_header->quantization_params.using_qmatrix) {
if (frame_header->lossless_array[segment_id]) {
frame_header->seg_qm_Level[0][segment_id] = 15;
frame_header->seg_qm_Level[1][segment_id] = 15;
frame_header->seg_qm_Level[2][segment_id] = 15;
} else {
frame_header->seg_qm_Level[0][segment_id] =
frame_header->quantization_params.qm_y;
frame_header->seg_qm_Level[1][segment_id] =
frame_header->quantization_params.qm_u;
frame_header->seg_qm_Level[2][segment_id] =
frame_header->quantization_params.qm_v;
}
}
}
frame_header->all_lossless = frame_header->coded_lossless
&& (parser->state.frame_width == parser->state.upscaled_width);
retval = gst_av1_parse_loop_filter_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_cdef_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_loop_restoration_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_tx_mode (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
/* 5.9.23 inlined frame_reference_mode () */
if (frame_header->frame_is_intra) {
frame_header->reference_select = 0;
} else {
frame_header->reference_select = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
retval = gst_av1_parse_skip_mode_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
if (frame_header->frame_is_intra ||
frame_header->error_resilient_mode || !seq_header->enable_warped_motion)
frame_header->allow_warped_motion = 0;
else {
frame_header->allow_warped_motion = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
frame_header->reduced_tx_set = AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_global_motion_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
retval = gst_av1_parse_film_grain_params (parser, br, frame_header);
if (retval != GST_AV1_PARSER_OK)
goto error;
success:
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse uncompressed frame header error %d", retval);
return retval;
}
/**
* gst_av1_parser_reference_frame_update:
* @parser: the #GstAV1Parser
* @frame_header: a #GstAV1FrameHeaderOBU to load
*
* Update the context of @frame_header to parser's state. This function is
* used when we finish one frame's decoding/showing, and need to update info
* such as reference, global parameters.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_reference_frame_update (GstAV1Parser * parser,
GstAV1FrameHeaderOBU * frame_header)
{
gint i;
GstAV1SequenceHeaderOBU *seq_header;
GstAV1ReferenceFrameInfo *ref_info;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (frame_header != NULL, GST_AV1_PARSER_INVALID_OPERATION);
if (!parser->seq_header) {
GST_WARNING ("Missing OBU Reference: seq_header");
return GST_AV1_PARSER_MISSING_OBU_REFERENCE;
}
seq_header = parser->seq_header;
ref_info = &(parser->state.ref_info);
if (frame_header->frame_type == GST_AV1_INTRA_ONLY_FRAME
&& frame_header->refresh_frame_flags == 0xff)
return GST_AV1_PARSER_BITSTREAM_ERROR;
for (i = 0; i < GST_AV1_NUM_REF_FRAMES; i++) {
if ((frame_header->refresh_frame_flags >> i) & 1) {
ref_info->entry[i].ref_valid = 1;
ref_info->entry[i].ref_frame_id = frame_header->current_frame_id;
ref_info->entry[i].ref_frame_type = frame_header->frame_type;
ref_info->entry[i].ref_upscaled_width = frame_header->upscaled_width;
ref_info->entry[i].ref_frame_width = frame_header->frame_width;
ref_info->entry[i].ref_frame_height = frame_header->frame_height;
ref_info->entry[i].ref_render_width = frame_header->render_width;
ref_info->entry[i].ref_render_height = frame_header->render_height;
ref_info->entry[i].ref_order_hint = frame_header->order_hint;
ref_info->entry[i].ref_mi_cols = parser->state.mi_cols;
ref_info->entry[i].ref_mi_rows = parser->state.mi_rows;
ref_info->entry[i].ref_subsampling_x =
seq_header->color_config.subsampling_x;
ref_info->entry[i].ref_subsampling_y =
seq_header->color_config.subsampling_y;
ref_info->entry[i].ref_bit_depth = seq_header->bit_depth;
ref_info->entry[i].ref_segmentation_params =
frame_header->segmentation_params;
ref_info->entry[i].ref_global_motion_params =
frame_header->global_motion_params;
ref_info->entry[i].ref_lf_params = frame_header->loop_filter_params;
ref_info->entry[i].ref_tile_info = frame_header->tile_info;
if (seq_header->film_grain_params_present)
ref_info->entry[i].ref_film_grain_params =
frame_header->film_grain_params;
}
}
return GST_AV1_PARSER_OK;
}
/* 5.12.1 */
/**
* gst_av1_parser_parse_tile_list_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
* @tile_list: a #GstAV1TileListOBU to store the parsed result.
*
* Parse one tile list @obu based on the @parser context, store the result
* in the @tile_list. It is for large scale tile coding mode.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_tile_list_obu (GstAV1Parser * parser,
GstAV1OBU * obu, GstAV1TileListOBU * tile_list)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
GstBitReader *br;
GstBitReader bitreader;
gint tile;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_TILE_LIST,
GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (tile_list != NULL, GST_AV1_PARSER_INVALID_OPERATION);
br = &bitreader;
memset (tile_list, 0, sizeof (*tile_list));
gst_bit_reader_init (br, obu->data, obu->obu_size);
if (AV1_REMAINING_BITS (br) < 8 + 8 + 16) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
tile_list->output_frame_width_in_tiles_minus_1 = AV1_READ_BITS (br, 8);
tile_list->output_frame_height_in_tiles_minus_1 = AV1_READ_BITS (br, 8);
tile_list->tile_count_minus_1 = AV1_READ_BITS (br, 16);
for (tile = 0; tile <= tile_list->tile_count_minus_1; tile++) {
if (AV1_REMAINING_BITS (br) < 8 + 8 + 8 + 16) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
tile_list->entry[tile].anchor_frame_idx = AV1_READ_BITS (br, 8);
tile_list->entry[tile].anchor_tile_row = AV1_READ_BITS (br, 8);
tile_list->entry[tile].anchor_tile_col = AV1_READ_BITS (br, 8);
tile_list->entry[tile].tile_data_size_minus_1 = AV1_READ_BITS (br, 16);
g_assert (gst_bit_reader_get_pos (br) % 8 == 0);
tile_list->entry[tile].coded_tile_data =
obu->data + gst_bit_reader_get_pos (br) / 8;
/* skip the coded_tile_data */
if (!gst_bit_reader_skip (br,
tile_list->entry[tile].tile_data_size_minus_1 + 1)) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
}
retval = av1_skip_trailing_bits (parser, br, obu);
if (retval != GST_AV1_PARSER_OK)
goto error;
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse tile list error %d", retval);
return retval;
}
/* 5.11.1 */
static GstAV1ParserResult
gst_av1_parse_tile_group (GstAV1Parser * parser, GstBitReader * br,
GstAV1TileGroupOBU * tile_group)
{
GstAV1ParserResult retval = GST_AV1_PARSER_OK;
gint tile_num /* TileNum */ , end_bit_pos /* endBitPos */ ;
gint header_bytes /* headerBytes */ , start_bitpos /* startBitPos */ ;
guint32 sz = AV1_REMAINING_BYTES (br);
guint32 tile_row /* tileRow */ ;
guint32 tile_col /* tileCol */ ;
guint32 tile_size /* tileSize */ ;
memset (tile_group, 0, sizeof (*tile_group));
tile_group->num_tiles = parser->state.tile_cols * parser->state.tile_rows;
start_bitpos = gst_bit_reader_get_pos (br);
tile_group->tile_start_and_end_present_flag = 0;
if (tile_group->num_tiles > 1) {
tile_group->tile_start_and_end_present_flag =
AV1_READ_BIT_CHECKED (br, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (tile_group->num_tiles == 1
|| !tile_group->tile_start_and_end_present_flag) {
tile_group->tg_start = 0;
tile_group->tg_end = tile_group->num_tiles - 1;
} else {
gint tileBits = parser->state.tile_cols_log2 + parser->state.tile_rows_log2;
tile_group->tg_start = AV1_READ_BITS_CHECKED (br, tileBits, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
tile_group->tg_end = AV1_READ_BITS_CHECKED (br, tileBits, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
}
if (tile_group->tg_end < tile_group->tg_start) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
if (!gst_bit_reader_skip_to_byte (br)) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
end_bit_pos = gst_bit_reader_get_pos (br);
header_bytes = (end_bit_pos - start_bitpos) / 8;
sz -= header_bytes;
for (tile_num = tile_group->tg_start; tile_num <= tile_group->tg_end;
tile_num++) {
tile_row = tile_num / parser->state.tile_cols;
tile_col = tile_num % parser->state.tile_cols;
/* if last tile */
if (tile_num == tile_group->tg_end) {
tile_size = sz;
} else {
gint tile_size_minus_1 = av1_bitstreamfn_le (br,
parser->state.tile_size_bytes, &retval);
if (retval != GST_AV1_PARSER_OK)
goto error;
tile_size = tile_size_minus_1 + 1;
sz -= (tile_size + parser->state.tile_size_bytes);
}
tile_group->entry[tile_num].tile_size = tile_size;
tile_group->entry[tile_num].tile_offset = gst_bit_reader_get_pos (br) / 8;
tile_group->entry[tile_num].tile_row = tile_row;
tile_group->entry[tile_num].tile_col = tile_col;
tile_group->entry[tile_num].mi_row_start =
parser->state.mi_row_starts[tile_row];
tile_group->entry[tile_num].mi_row_end =
parser->state.mi_row_starts[tile_row + 1];
tile_group->entry[tile_num].mi_col_start =
parser->state.mi_col_starts[tile_col];
tile_group->entry[tile_num].mi_col_end =
parser->state.mi_col_starts[tile_col + 1];
/* Not implement here, the real decoder process
init_symbol( tileSize )
decode_tile( )
exit_symbol( )
*/
/* Skip the real data to the next one */
if (tile_num < tile_group->tg_end &&
!gst_bit_reader_skip (br, tile_size * 8)) {
retval = GST_AV1_PARSER_NO_MORE_DATA;
goto error;
}
}
if (tile_group->tg_end == tile_group->num_tiles - 1) {
/* Not implement here, the real decoder process
if ( !disable_frame_end_update_cdf ) {
frame_end_update_cdf( )
}
decode_frame_wrapup( )
*/
parser->state.seen_frame_header = 0;
}
return GST_AV1_PARSER_OK;
error:
GST_WARNING ("parse tile group error %d", retval);
return retval;
}
/**
* gst_av1_parser_parse_tile_group_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
* @tile_group: a #GstAV1TileGroupOBU to store the parsed result.
*
* Parse one tile group @obu based on the @parser context, store the result
* in the @tile_group.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_tile_group_obu (GstAV1Parser * parser, GstAV1OBU * obu,
GstAV1TileGroupOBU * tile_group)
{
GstAV1ParserResult ret;
GstBitReader bit_reader;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_TILE_GROUP,
GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (tile_group != NULL, GST_AV1_PARSER_INVALID_OPERATION);
if (!parser->state.seen_frame_header) {
GST_WARNING ("Missing OBU Reference: frame_header");
return GST_AV1_PARSER_MISSING_OBU_REFERENCE;
}
gst_bit_reader_init (&bit_reader, obu->data, obu->obu_size);
ret = gst_av1_parse_tile_group (parser, &bit_reader, tile_group);
return ret;
}
static GstAV1ParserResult
gst_av1_parse_frame_header (GstAV1Parser * parser, GstAV1OBU * obu,
GstBitReader * bit_reader, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult ret;
guint i;
memset (frame_header, 0, sizeof (*frame_header));
frame_header->frame_is_intra = 1;
frame_header->last_frame_idx = -1;
frame_header->gold_frame_idx = -1;
for (i = 0; i < GST_AV1_REFS_PER_FRAME; i++)
frame_header->ref_frame_idx[i] = -1;
ret = gst_av1_parse_uncompressed_frame_header (parser, obu, bit_reader,
frame_header);
if (ret != GST_AV1_PARSER_OK)
return ret;
if (frame_header->show_existing_frame) {
parser->state.seen_frame_header = 0;
} else {
parser->state.seen_frame_header = 1;
}
return GST_AV1_PARSER_OK;
}
/**
* gst_av1_parser_parse_frame_header_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
* @frame_header: a #GstAV1FrameHeaderOBU to store the parsed result.
*
* Parse one frame header @obu based on the @parser context, store the result
* in the @frame.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_frame_header_obu (GstAV1Parser * parser,
GstAV1OBU * obu, GstAV1FrameHeaderOBU * frame_header)
{
GstAV1ParserResult ret;
GstBitReader bit_reader;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_FRAME_HEADER ||
obu->obu_type == GST_AV1_OBU_REDUNDANT_FRAME_HEADER,
GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (frame_header != NULL, GST_AV1_PARSER_INVALID_OPERATION);
if (obu->obu_type == GST_AV1_OBU_REDUNDANT_FRAME_HEADER
&& !parser->state.seen_frame_header) {
GST_WARNING ("no seen of frame header while get redundant frame header");
return GST_AV1_PARSER_BITSTREAM_ERROR;
}
if (obu->obu_type == GST_AV1_OBU_FRAME_HEADER
&& parser->state.seen_frame_header) {
GST_WARNING ("already seen a frame header");
return GST_AV1_PARSER_BITSTREAM_ERROR;
}
gst_bit_reader_init (&bit_reader, obu->data, obu->obu_size);
ret = gst_av1_parse_frame_header (parser, obu, &bit_reader, frame_header);
if (ret != GST_AV1_PARSER_OK)
return ret;
ret = av1_skip_trailing_bits (parser, &bit_reader, obu);
return ret;
}
/**
* gst_av1_parser_parse_frame_obu:
* @parser: the #GstAV1Parser
* @obu: a #GstAV1OBU to be parsed
* @frame: a #GstAV1FrameOBU to store the parsed result.
*
* Parse one frame @obu based on the @parser context, store the result
* in the @frame.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.18
*/
GstAV1ParserResult
gst_av1_parser_parse_frame_obu (GstAV1Parser * parser, GstAV1OBU * obu,
GstAV1FrameOBU * frame)
{
GstAV1ParserResult retval;
GstBitReader bit_reader;
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (obu->obu_type == GST_AV1_OBU_FRAME,
GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (frame != NULL, GST_AV1_PARSER_INVALID_OPERATION);
if (parser->state.seen_frame_header) {
GST_WARNING ("already seen a frame header");
return GST_AV1_PARSER_BITSTREAM_ERROR;
}
gst_bit_reader_init (&bit_reader, obu->data, obu->obu_size);
retval = gst_av1_parse_frame_header (parser, obu, &bit_reader,
&(frame->frame_header));
if (retval != GST_AV1_PARSER_OK)
return retval;
if (!gst_bit_reader_skip_to_byte (&bit_reader))
return GST_AV1_PARSER_NO_MORE_DATA;
retval = gst_av1_parse_tile_group (parser, &bit_reader, &(frame->tile_group));
return retval;
}
/**
* gst_av1_parser_set_operating_point:
* @parser: the #GstAV1Parser
* @operating_point: the operating point to set
*
* Set the operating point to filter OBUs.
*
* Returns: The #GstAV1ParserResult.
*
* Since: 1.20
*/
GstAV1ParserResult
gst_av1_parser_set_operating_point (GstAV1Parser * parser,
gint32 operating_point)
{
g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
g_return_val_if_fail (operating_point >= 0, GST_AV1_PARSER_INVALID_OPERATION);
if (parser->seq_header &&
operating_point > parser->seq_header->operating_points_cnt_minus_1)
return GST_AV1_PARSER_INVALID_OPERATION;
/* Decide whether it is valid when sequence comes. */
parser->state.operating_point = operating_point;
return GST_AV1_PARSER_OK;
}
/**
* gst_av1_parser_new:
*
* Allocates a new #GstAV1Parser,
*
* Returns: (transfer full): a newly-allocated #GstAV1Parser
*
* Since: 1.18
*/
GstAV1Parser *
gst_av1_parser_new (void)
{
return g_new0 (GstAV1Parser, 1);
}
/**
* gst_av1_parser_free:
* @parser: the #GstAV1Parser to free
*
* If parser is not %NULL, frees its allocated memory.
*
* It cannot be used afterwards.
*
* Since: 1.18
*/
void
gst_av1_parser_free (GstAV1Parser * parser)
{
g_return_if_fail (parser != NULL);
if (parser->seq_header)
g_free (parser->seq_header);
g_free (parser);
}
Reference in a new issue View git blame Copy permalink