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gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gsth265bitwriter.c
Víctor Manuel Jáquez Leal e60efa4b9a codecparsers: avoid libc math library 
Instead of the libc ceil() and pow() machinery for double types, since the
library uses it for unsigned integers use a simple math function for for ceil
division and bit left shift for integer power of two.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7869>
2024-11-15 19:33:10 +00:00

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/* GStreamer
* Copyright (C) 2021 Intel Corporation
* Author: He Junyan <junyan.he@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the0
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gsth265bitwriter.h"
#include "nalutils.h"
#include <gst/base/gstbitwriter.h>
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT gst_h265_debug_category_get()
static GstDebugCategory *
gst_h265_debug_category_get (void)
{
static gsize cat_gonce = 0;
if (g_once_init_enter (&cat_gonce)) {
GstDebugCategory *cat = NULL;
GST_DEBUG_CATEGORY_INIT (cat, "bitwriter_h265", 0,
"h265 bitwriter library");
g_once_init_leave (&cat_gonce, (gsize) cat);
}
return (GstDebugCategory *) cat_gonce;
}
#endif /* GST_DISABLE_GST_DEBUG */
/******************************** Utils ********************************/
#define SIGNED(val) (2 * ABS(val) - ((val) > 0))
/* Write an unsigned integer Exp-Golomb-coded syntax element. i.e. ue(v) */
static gboolean
_bs_write_ue (GstBitWriter * bs, guint32 value)
{
guint32 size_in_bits = 0;
guint32 tmp_value = ++value;
while (tmp_value) {
++size_in_bits;
tmp_value >>= 1;
}
if (size_in_bits > 1
&& !gst_bit_writer_put_bits_uint32 (bs, 0, size_in_bits - 1))
return FALSE;
if (!gst_bit_writer_put_bits_uint32 (bs, value, size_in_bits))
return FALSE;
return TRUE;
}
#define WRITE_BITS_UNCHECK(bw, val, nbits) \
(nbits <= 8 ? gst_bit_writer_put_bits_uint8 (bw, val, nbits) : \
(nbits <= 16 ? gst_bit_writer_put_bits_uint16 (bw, val, nbits) : \
(nbits <= 32 ? gst_bit_writer_put_bits_uint32 (bw, val, nbits) : \
FALSE)))
#define WRITE_BITS(bw, val, nbits) \
if (!WRITE_BITS_UNCHECK (bw, val, nbits)) { \
g_warning ("Unsupported bit size: %u", nbits); \
have_space = FALSE; \
goto error; \
}
#define WRITE_UE_UNCHECK(bw, val) _bs_write_ue (bw, val)
#ifdef WRITE_UE
#undef WRITE_UE
#endif
#define WRITE_UE(bw, val) \
if (!(have_space = WRITE_UE_UNCHECK (bw, val))) \
goto error; \
#define WRITE_UE_MAX(bw, val, max) \
if ((guint32) val > (max) || !(have_space = WRITE_UE_UNCHECK (bw, val))) \
goto error;
#define WRITE_SE(bw, val) WRITE_UE (bw, SIGNED (val))
#define WRITE_SE_RANGE(bw, val, min, max) \
if (val > max || val < min || \
!(have_space = WRITE_UE_UNCHECK (bw, SIGNED (val)))) \
goto error;
#define WRITE_BYTES_UNCHECK(bw, ptr, nbytes) \
gst_bit_writer_put_bytes(bw, ptr, nbytes)
#ifdef WRITE_BYTES
#undef WRITE_BYTES
#endif
#define WRITE_BYTES(bw, ptr, nbytes) \
if (!(have_space = WRITE_BYTES_UNCHECK (bw, ptr, nbytes))) \
goto error;
/***************************** End of Utils ****************************/
#define EXTENDED_SAR 255
/**** Default scaling_lists according to Table 7-5 and 7-6 *****/
/* Table 7-5 */
static const guint8 default_scaling_list0[16] = {
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16
};
/* Combined the values in Table 7-6 to make the calculation easier
* Default scaling list of 8x8 and 16x16 matrices for matrixId = 0, 1 and 2
* Default scaling list of 32x32 matrix for matrixId = 0
*/
static const guint8 default_scaling_list1[64] = {
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 16,
17, 16, 17, 18, 17, 18, 18, 17, 18, 21, 19, 20,
21, 20, 19, 21, 24, 22, 22, 24, 24, 22, 22, 24,
25, 25, 27, 30, 27, 25, 25, 29, 31, 35, 35, 31,
29, 36, 41, 44, 41, 36, 47, 54, 54, 47, 65, 70,
65, 88, 88, 115
};
/* Combined the values in Table 7-6 to make the calculation easier
* Default scaling list of 8x8 and 16x16 matrices for matrixId = 3, 4 and 5
* Default scaling list of 32x32 matrix for matrixId = 1
*/
static const guint8 default_scaling_list2[64] = {
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17,
17, 17, 17, 18, 18, 18, 18, 18, 18, 20, 20, 20,
20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24,
25, 25, 25, 25, 25, 25, 25, 28, 28, 28, 28, 28,
28, 33, 33, 33, 33, 33, 41, 41, 41, 41, 54, 54,
54, 71, 71, 91
};
static gboolean
_h265_bit_writer_profile_tier_level (const GstH265ProfileTierLevel * ptl,
guint8 maxNumSubLayersMinus1, GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
guint i, j;
GST_DEBUG ("writing profile_tier_level");
WRITE_BITS (bw, ptl->profile_space, 2);
WRITE_BITS (bw, ptl->tier_flag, 1);
WRITE_BITS (bw, ptl->profile_idc, 5);
for (j = 0; j < 32; j++)
WRITE_BITS (bw, ptl->profile_compatibility_flag[j], 1);
WRITE_BITS (bw, ptl->progressive_source_flag, 1);
WRITE_BITS (bw, ptl->interlaced_source_flag, 1);
WRITE_BITS (bw, ptl->non_packed_constraint_flag, 1);
WRITE_BITS (bw, ptl->frame_only_constraint_flag, 1);
if (ptl->profile_idc == 4 || ptl->profile_compatibility_flag[4] ||
ptl->profile_idc == 5 || ptl->profile_compatibility_flag[5] ||
ptl->profile_idc == 6 || ptl->profile_compatibility_flag[6] ||
ptl->profile_idc == 7 || ptl->profile_compatibility_flag[7] ||
ptl->profile_idc == 8 || ptl->profile_compatibility_flag[8] ||
ptl->profile_idc == 9 || ptl->profile_compatibility_flag[9] ||
ptl->profile_idc == 10 || ptl->profile_compatibility_flag[10] ||
ptl->profile_idc == 11 || ptl->profile_compatibility_flag[11]) {
WRITE_BITS (bw, ptl->max_12bit_constraint_flag, 1);
WRITE_BITS (bw, ptl->max_10bit_constraint_flag, 1);
WRITE_BITS (bw, ptl->max_8bit_constraint_flag, 1);
WRITE_BITS (bw, ptl->max_422chroma_constraint_flag, 1);
WRITE_BITS (bw, ptl->max_420chroma_constraint_flag, 1);
WRITE_BITS (bw, ptl->max_monochrome_constraint_flag, 1);
WRITE_BITS (bw, ptl->intra_constraint_flag, 1);
WRITE_BITS (bw, ptl->one_picture_only_constraint_flag, 1);
WRITE_BITS (bw, ptl->lower_bit_rate_constraint_flag, 1);
if (ptl->profile_idc == 5 || ptl->profile_compatibility_flag[5] ||
ptl->profile_idc == 9 || ptl->profile_compatibility_flag[9] ||
ptl->profile_idc == 10 || ptl->profile_compatibility_flag[10] ||
ptl->profile_idc == 11 || ptl->profile_compatibility_flag[11]) {
WRITE_BITS (bw, ptl->max_14bit_constraint_flag, 1);
/* general_reserved_zero_33bits */
WRITE_BITS (bw, 0, 32);
WRITE_BITS (bw, 0, 1);
} else {
/* general_reserved_zero_34bits */
WRITE_BITS (bw, 0, 32);
WRITE_BITS (bw, 0, 2);
}
} else if (ptl->profile_idc == 2 || ptl->profile_compatibility_flag[2]) {
/* general_reserved_zero_7bits */
WRITE_BITS (bw, 0, 7);
WRITE_BITS (bw, ptl->one_picture_only_constraint_flag, 1);
/* general_reserved_zero_35bits */
WRITE_BITS (bw, 0, 32);
WRITE_BITS (bw, 0, 3);
} else {
/* general_reserved_zero_43bits */
WRITE_BITS (bw, 0, 32);
WRITE_BITS (bw, 0, 11);
}
/* general_inbld_flag, just set to 0 */
WRITE_BITS (bw, 0, 1);
WRITE_BITS (bw, ptl->level_idc, 8);
for (j = 0; j < maxNumSubLayersMinus1; j++) {
if (ptl->sub_layer_profile_present_flag[j]) {
GST_WARNING ("sub layer profile does not supported now");
goto error;
}
WRITE_BITS (bw, ptl->sub_layer_profile_present_flag[j], 1);
if (ptl->sub_layer_level_present_flag[j]) {
GST_WARNING ("sub layer level does not supported now");
goto error;
}
WRITE_BITS (bw, ptl->sub_layer_level_present_flag[j], 1);
}
if (maxNumSubLayersMinus1 > 0) {
for (i = maxNumSubLayersMinus1; i < 8; i++)
/* reserved_zero_2bits */
WRITE_BITS (bw, 0, 2);
}
/* TODO: Add sub layers profiles. */
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write profile_tier_level");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_sub_layer_hrd_parameters (const GstH265SubLayerHRDParams *
sub_hrd, guint8 CpbCnt, guint8 sub_pic_hrd_params_present_flag,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
guint i;
GST_DEBUG ("writing \"subLayer HRD Parameters\"");
for (i = 0; i <= CpbCnt; i++) {
WRITE_UE_MAX (bw, sub_hrd->bit_rate_value_minus1[i], G_MAXUINT32 - 1);
WRITE_UE_MAX (bw, sub_hrd->cpb_size_value_minus1[i], G_MAXUINT32 - 1);
if (sub_pic_hrd_params_present_flag) {
WRITE_UE_MAX (bw, sub_hrd->cpb_size_du_value_minus1[i], G_MAXUINT32 - 1);
WRITE_UE_MAX (bw, sub_hrd->bit_rate_du_value_minus1[i], G_MAXUINT32 - 1);
}
WRITE_BITS (bw, sub_hrd->cbr_flag[i], 1);
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write \"subLayer HRD Parameters \"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_hrd_parameters (const GstH265HRDParams * hrd,
guint8 commonInfPresentFlag, guint8 maxNumSubLayersMinus1,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
guint i;
GST_DEBUG ("writing \"HRD Parameters\"");
if (commonInfPresentFlag) {
WRITE_BITS (bw, hrd->nal_hrd_parameters_present_flag, 1);
WRITE_BITS (bw, hrd->vcl_hrd_parameters_present_flag, 1);
if (hrd->nal_hrd_parameters_present_flag
|| hrd->vcl_hrd_parameters_present_flag) {
WRITE_BITS (bw, hrd->sub_pic_hrd_params_present_flag, 1);
if (hrd->sub_pic_hrd_params_present_flag) {
WRITE_BITS (bw, hrd->tick_divisor_minus2, 8);
WRITE_BITS (bw, hrd->du_cpb_removal_delay_increment_length_minus1, 5);
WRITE_BITS (bw, hrd->sub_pic_cpb_params_in_pic_timing_sei_flag, 1);
WRITE_BITS (bw, hrd->dpb_output_delay_du_length_minus1, 5);
}
WRITE_BITS (bw, hrd->bit_rate_scale, 4);
WRITE_BITS (bw, hrd->cpb_size_scale, 4);
if (hrd->sub_pic_hrd_params_present_flag)
WRITE_BITS (bw, hrd->cpb_size_du_scale, 4);
WRITE_BITS (bw, hrd->initial_cpb_removal_delay_length_minus1, 5);
WRITE_BITS (bw, hrd->au_cpb_removal_delay_length_minus1, 5);
WRITE_BITS (bw, hrd->dpb_output_delay_length_minus1, 5);
}
}
for (i = 0; i <= maxNumSubLayersMinus1; i++) {
WRITE_BITS (bw, hrd->fixed_pic_rate_general_flag[i], 1);
if (!hrd->fixed_pic_rate_general_flag[i]) {
WRITE_BITS (bw, hrd->fixed_pic_rate_within_cvs_flag[i], 1);
} else {
if (hrd->fixed_pic_rate_within_cvs_flag[i] == 0)
goto error;
}
if (hrd->fixed_pic_rate_within_cvs_flag[i]) {
WRITE_UE_MAX (bw, hrd->elemental_duration_in_tc_minus1[i], 2047);
} else {
WRITE_BITS (bw, hrd->low_delay_hrd_flag[i], 1);
}
if (!hrd->low_delay_hrd_flag[i])
WRITE_UE_MAX (bw, hrd->cpb_cnt_minus1[i], 31);
if (hrd->nal_hrd_parameters_present_flag)
if (!_h265_bit_writer_sub_layer_hrd_parameters
(&hrd->sublayer_hrd_params[i], hrd->cpb_cnt_minus1[i],
hrd->sub_pic_hrd_params_present_flag, bw, &have_space))
goto error;
/* TODO: need to separate nal and vcl from hrd_parameters. */
if (hrd->vcl_hrd_parameters_present_flag)
if (!_h265_bit_writer_sub_layer_hrd_parameters
(&hrd->sublayer_hrd_params[i], hrd->cpb_cnt_minus1[i],
hrd->sub_pic_hrd_params_present_flag, bw, &have_space))
goto error;
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write \"HRD Parameters\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_vps (const GstH265VPS * vps, GstBitWriter * bw,
gboolean * space)
{
gboolean have_space = TRUE;
guint i, j;
GST_DEBUG ("writing VPS");
WRITE_BITS (bw, vps->id, 4);
WRITE_BITS (bw, vps->base_layer_internal_flag, 1);
WRITE_BITS (bw, vps->base_layer_available_flag, 1);
WRITE_BITS (bw, vps->max_layers_minus1, 6);
WRITE_BITS (bw, vps->max_sub_layers_minus1, 3);
WRITE_BITS (bw, vps->temporal_id_nesting_flag, 1);
/* reserved_0xffff_16bits */
WRITE_BITS (bw, 0xffff, 16);
if (!_h265_bit_writer_profile_tier_level (&vps->profile_tier_level,
vps->max_sub_layers_minus1, bw, &have_space))
goto error;
WRITE_BITS (bw, vps->sub_layer_ordering_info_present_flag, 1);
for (i = (vps->sub_layer_ordering_info_present_flag ? 0 :
vps->max_sub_layers_minus1); i <= vps->max_sub_layers_minus1; i++) {
WRITE_UE (bw, vps->max_dec_pic_buffering_minus1[i]);
WRITE_UE_MAX (bw, vps->max_num_reorder_pics[i],
vps->max_dec_pic_buffering_minus1[i]);
WRITE_UE_MAX (bw, vps->max_latency_increase_plus1[i], G_MAXUINT32 - 1);
}
/* max_layer_id should be <63, but only support 1 layer now. */
if (vps->max_layer_id > 1) {
GST_WARNING ("multi layers are not supported now");
goto error;
}
WRITE_BITS (bw, vps->max_layer_id, 6);
if (vps->num_layer_sets_minus1 >= 1) {
GST_WARNING ("layer set is not supported now");
goto error;
}
WRITE_UE_MAX (bw, vps->num_layer_sets_minus1, 1023);
/* TODO: support multi-layer. */
for (i = 1; i <= vps->num_layer_sets_minus1; i++) {
for (j = 0; j <= vps->max_layer_id; j++) {
/* layer_id_included_flag[i][j] */
WRITE_BITS (bw, 0, 1);
}
}
WRITE_BITS (bw, vps->timing_info_present_flag, 1);
if (vps->timing_info_present_flag) {
WRITE_BITS (bw, vps->num_units_in_tick, 32);
WRITE_BITS (bw, vps->time_scale, 32);
WRITE_BITS (bw, vps->poc_proportional_to_timing_flag, 1);
if (vps->poc_proportional_to_timing_flag)
WRITE_UE_MAX (bw, vps->num_ticks_poc_diff_one_minus1, G_MAXUINT32 - 1);
/* TODO: VPS can have multiple hrd parameters, and therefore hrd_params
* should be an array (like Garray). Just support 1 hdr parameter now.
*/
if (vps->num_hrd_parameters > 1) {
GST_WARNING ("HRD parameters > 1 is not supported now");
goto error;
}
WRITE_UE_MAX (bw, vps->num_hrd_parameters, vps->num_layer_sets_minus1 + 1);
if (vps->num_hrd_parameters) {
WRITE_UE_MAX (bw, vps->hrd_layer_set_idx, vps->num_layer_sets_minus1);
if (!_h265_bit_writer_hrd_parameters (&vps->hrd_params,
vps->cprms_present_flag, vps->max_sub_layers_minus1,
bw, &have_space))
goto error;
}
}
if (vps->vps_extension) {
GST_WARNING ("vps extension is not supported now");
goto error;
}
WRITE_BITS (bw, 0, 1);
*space = TRUE;
return TRUE;
error:
GST_WARNING ("failed to write VPS");
*space = have_space;
return FALSE;
}
/**
* gst_h265_bit_writer_vps:
* @vps: the vps of #GstH265VPS to write
* @start_code: whether adding the nal start code
* @data: (out): the bit stream generated by the sps
* @size: (inout): the size in bytes of the input and output
*
* Generating the according h265 bit stream by providing the vps.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_vps (const GstH265VPS * vps, gboolean start_code,
guint8 * data, guint * size)
{
gboolean have_space = TRUE;
GstBitWriter bw;
g_return_val_if_fail (vps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR);
gst_bit_writer_init_with_data (&bw, data, *size, FALSE);
if (start_code)
WRITE_BITS (&bw, 0x00000001, 32);
/* NAL unit header */
/* forbidden_zero_bit */
WRITE_BITS (&bw, 0, 1);
/* nal_unit_type */
WRITE_BITS (&bw, GST_H265_NAL_VPS, 6);
/* nuh_layer_id, only support 0 now */
WRITE_BITS (&bw, 0, 6);
/* nuh_temporal_id_plus1, only support 1 now */
WRITE_BITS (&bw, 1, 3);
if (!_h265_bit_writer_vps (vps, &bw, &have_space))
goto error;
/* Add trailings. */
WRITE_BITS (&bw, 1, 1);
if (!gst_bit_writer_align_bytes (&bw, 0)) {
have_space = FALSE;
goto error;
}
*size = gst_bit_writer_get_size (&bw) / 8;
gst_bit_writer_reset (&bw);
return GST_H265_BIT_WRITER_OK;
error:
gst_bit_writer_reset (&bw);
*size = 0;
if (!have_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
static gboolean
_get_scaling_list_params (const GstH265ScalingList * dest_scaling_list,
guint8 sizeId, guint8 matrixId, const guint8 ** sl, guint8 * size,
gint16 * scaling_list_dc_coef_minus8)
{
switch (sizeId) {
case GST_H265_QUANT_MATIX_4X4:
*sl = dest_scaling_list->scaling_lists_4x4[matrixId];
if (size)
*size = 16;
break;
case GST_H265_QUANT_MATIX_8X8:
*sl = dest_scaling_list->scaling_lists_8x8[matrixId];
if (size)
*size = 64;
break;
case GST_H265_QUANT_MATIX_16X16:
*sl = dest_scaling_list->scaling_lists_16x16[matrixId];
if (size)
*size = 64;
if (scaling_list_dc_coef_minus8)
*scaling_list_dc_coef_minus8 =
dest_scaling_list->scaling_list_dc_coef_minus8_16x16[matrixId];
break;
case GST_H265_QUANT_MATIX_32X32:
*sl = dest_scaling_list->scaling_lists_32x32[matrixId];
if (size)
*size = 64;
if (scaling_list_dc_coef_minus8)
*scaling_list_dc_coef_minus8 =
dest_scaling_list->scaling_list_dc_coef_minus8_32x32[matrixId];
break;
default:
g_assert_not_reached ();
return FALSE;
}
return TRUE;
}
static const guint8 *
_get_default_scaling_lists (GstH265QuantMatrixSize sizeId, guint8 matrixId)
{
const guint8 *sl;
switch (sizeId) {
case GST_H265_QUANT_MATIX_4X4:
sl = default_scaling_list0;
break;
case GST_H265_QUANT_MATIX_8X8:
case GST_H265_QUANT_MATIX_16X16:
if (matrixId <= 2) {
sl = default_scaling_list1;
} else {
sl = default_scaling_list2;
}
break;
case GST_H265_QUANT_MATIX_32X32:
if (matrixId == 0) {
sl = default_scaling_list1;
} else {
sl = default_scaling_list2;
}
break;
default:
g_assert_not_reached ();
return NULL;
}
return sl;
}
static gboolean
_compare_scaling_list_matrix (GstH265QuantMatrixSize sizeId,
const guint8 * sl0, const guint8 * sl1,
gint16 dc_coef_minus8_0, gint16 dc_coef_minus8_1)
{
guint size = sizeId == GST_H265_QUANT_MATIX_4X4 ? 16 : 64;
if (memcmp (sl0, sl1, size * sizeof (guint8)))
return FALSE;
if (sizeId <= GST_H265_QUANT_MATIX_8X8)
return TRUE;
return dc_coef_minus8_0 == dc_coef_minus8_1;
}
static gboolean
_h265_bit_writer_scaling_lists (const GstH265ScalingList * src_scaling_list,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
GstH265QuantMatrixSize sizeId;
guint8 matrixId;
guint8 scaling_list_pred_mode_flag = 0;
guint8 size, i, j;
GST_DEBUG ("writing scaling lists");
for (sizeId = 0; sizeId <= GST_H265_QUANT_MATIX_32X32; sizeId++) {
for (matrixId = 0;
matrixId < ((sizeId == GST_H265_QUANT_MATIX_32X32) ? 2 : 6);
matrixId++) {
gint16 scaling_list_dc_coef_minus8 = 8;
const guint8 *sl;
const guint8 *default_sl;
guint8 nextCoef;
gint8 coef_val;
guint8 scaling_list_pred_matrix_id_delta;
if (!_get_scaling_list_params (src_scaling_list, sizeId, matrixId,
&sl, &size, &scaling_list_dc_coef_minus8))
goto error;
/* Check whether it is the default matrix. */
default_sl = _get_default_scaling_lists (sizeId, matrixId);
if (_compare_scaling_list_matrix (sizeId, sl, default_sl,
scaling_list_dc_coef_minus8, 8)) {
scaling_list_pred_mode_flag = 0;
WRITE_BITS (bw, scaling_list_pred_mode_flag, 1);
scaling_list_pred_matrix_id_delta = 0;
WRITE_UE_MAX (bw, scaling_list_pred_matrix_id_delta, matrixId);
continue;
}
/* If some previous matrix is the same, just ref it. */
scaling_list_pred_matrix_id_delta = 0;
for (j = 0; j < matrixId; j++) {
gboolean ret;
guint8 size2;
const guint8 *sl2;
gint16 scaling_list_dc_coef_minus8_2 = 8;
ret = _get_scaling_list_params (src_scaling_list, sizeId, j,
&sl2, &size2, &scaling_list_dc_coef_minus8_2);
g_assert (ret);
g_assert (size == size2);
if (_compare_scaling_list_matrix (sizeId, sl, sl2,
scaling_list_dc_coef_minus8, scaling_list_dc_coef_minus8_2)) {
scaling_list_pred_matrix_id_delta = matrixId - j;
break;
}
}
if (scaling_list_pred_matrix_id_delta > 0) {
scaling_list_pred_mode_flag = 0;
WRITE_BITS (bw, scaling_list_pred_mode_flag, 1);
WRITE_UE_MAX (bw, scaling_list_pred_matrix_id_delta, matrixId);
continue;
}
/* Just explicitly signal all matrix coef. */
scaling_list_pred_mode_flag = 1;
WRITE_BITS (bw, scaling_list_pred_mode_flag, 1);
nextCoef = 8;
if (sizeId > 1) {
WRITE_SE_RANGE (bw, scaling_list_dc_coef_minus8, -7, 247);
nextCoef = scaling_list_dc_coef_minus8 + 8;
}
for (i = 0; i < size; i++) {
coef_val = sl[i] - nextCoef;
nextCoef = sl[i];
if (coef_val > 127) {
coef_val = coef_val - 256;
}
if (coef_val < -128) {
coef_val = coef_val + 256;
}
WRITE_SE_RANGE (bw, coef_val, -128, 127);
}
}
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write scaling lists");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_short_term_ref_pic_set (const GstH265ShortTermRefPicSet *
stRPS, guint8 stRpsIdx, const GstH265SPS * sps,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
gint32 prev;
gint i = 0;
GST_DEBUG ("writing \"ShortTermRefPicSetParameter\"");
if (stRPS->inter_ref_pic_set_prediction_flag) {
/* TODO */
GST_WARNING ("inter_ref_pic_set_prediction_flag mode not supported");
goto error;
}
if (stRpsIdx != 0)
WRITE_BITS (bw, stRPS->inter_ref_pic_set_prediction_flag, 1);
if (stRPS->NumNegativePics + stRPS->NumPositivePics != stRPS->NumDeltaPocs)
goto error;
/* 7-49 */
WRITE_UE_MAX (bw, stRPS->NumNegativePics,
sps->max_dec_pic_buffering_minus1[sps->max_sub_layers_minus1]);
/* 7-50 */
WRITE_UE_MAX (bw, stRPS->NumPositivePics,
(sps->max_dec_pic_buffering_minus1[sps->max_sub_layers_minus1] -
stRPS->NumNegativePics));
prev = 0;
for (i = 0; i < stRPS->NumNegativePics; i++) {
WRITE_UE_MAX (bw, prev - stRPS->DeltaPocS0[i] - 1, 32767);
prev = stRPS->DeltaPocS0[i];
/* 7-51 */
WRITE_BITS (bw, stRPS->UsedByCurrPicS0[i], 1);
}
prev = 0;
for (i = 0; i < stRPS->NumPositivePics; i++) {
WRITE_UE_MAX (bw, stRPS->DeltaPocS1[i] - prev - 1, 32767);
prev = stRPS->DeltaPocS1[i];
/* 7-52 */
WRITE_BITS (bw, stRPS->UsedByCurrPicS1[i], 1);
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write \"ShortTermRefPicSet Parameters\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_vui_parameters (const GstH265SPS * sps,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
const GstH265VUIParams *vui = &sps->vui_params;
GST_DEBUG ("writing \"VUI Parameters\"");
WRITE_BITS (bw, vui->aspect_ratio_info_present_flag, 1);
if (vui->aspect_ratio_info_present_flag) {
WRITE_BITS (bw, vui->aspect_ratio_idc, 8);
if (vui->aspect_ratio_idc == EXTENDED_SAR) {
WRITE_BITS (bw, vui->sar_width, 16);
WRITE_BITS (bw, vui->sar_height, 16);
}
}
WRITE_BITS (bw, vui->overscan_info_present_flag, 1);
if (vui->overscan_info_present_flag)
WRITE_BITS (bw, vui->overscan_appropriate_flag, 1);
WRITE_BITS (bw, vui->video_signal_type_present_flag, 1);
if (vui->video_signal_type_present_flag) {
WRITE_BITS (bw, vui->video_format, 3);
WRITE_BITS (bw, vui->video_full_range_flag, 1);
WRITE_BITS (bw, vui->colour_description_present_flag, 1);
if (vui->colour_description_present_flag) {
WRITE_BITS (bw, vui->colour_primaries, 8);
WRITE_BITS (bw, vui->transfer_characteristics, 8);
WRITE_BITS (bw, vui->matrix_coefficients, 8);
}
}
WRITE_BITS (bw, vui->chroma_loc_info_present_flag, 1);
if (vui->chroma_loc_info_present_flag) {
WRITE_UE_MAX (bw, vui->chroma_sample_loc_type_top_field, 5);
WRITE_UE_MAX (bw, vui->chroma_sample_loc_type_bottom_field, 5);
}
WRITE_BITS (bw, vui->neutral_chroma_indication_flag, 1);
WRITE_BITS (bw, vui->field_seq_flag, 1);
WRITE_BITS (bw, vui->frame_field_info_present_flag, 1);
WRITE_BITS (bw, vui->default_display_window_flag, 1);
if (vui->default_display_window_flag) {
WRITE_UE (bw, vui->def_disp_win_left_offset);
WRITE_UE (bw, vui->def_disp_win_right_offset);
WRITE_UE (bw, vui->def_disp_win_top_offset);
WRITE_UE (bw, vui->def_disp_win_bottom_offset);
}
WRITE_BITS (bw, vui->timing_info_present_flag, 1);
if (vui->timing_info_present_flag) {
if (vui->num_units_in_tick == 0)
GST_WARNING ("num_units_in_tick = 0 (incompliant to H.265 E.2.1).");
WRITE_BITS (bw, vui->num_units_in_tick, 32);
if (vui->time_scale == 0)
GST_WARNING ("time_scale = 0 (incompliant to H.265 E.2.1).");
WRITE_BITS (bw, vui->time_scale, 32);
WRITE_BITS (bw, vui->poc_proportional_to_timing_flag, 1);
if (vui->poc_proportional_to_timing_flag)
WRITE_UE_MAX (bw, vui->num_ticks_poc_diff_one_minus1, G_MAXUINT32 - 1);
WRITE_BITS (bw, vui->hrd_parameters_present_flag, 1);
if (vui->hrd_parameters_present_flag)
if (!_h265_bit_writer_hrd_parameters (&vui->hrd_params, 1,
sps->max_sub_layers_minus1, bw, &have_space))
goto error;
}
WRITE_BITS (bw, vui->bitstream_restriction_flag, 1);
if (vui->bitstream_restriction_flag) {
WRITE_BITS (bw, vui->tiles_fixed_structure_flag, 1);
WRITE_BITS (bw, vui->motion_vectors_over_pic_boundaries_flag, 1);
WRITE_BITS (bw, vui->restricted_ref_pic_lists_flag, 1);
WRITE_UE_MAX (bw, vui->min_spatial_segmentation_idc, 4096);
WRITE_UE_MAX (bw, vui->max_bytes_per_pic_denom, 16);
WRITE_UE_MAX (bw, vui->max_bits_per_min_cu_denom, 16);
WRITE_UE_MAX (bw, vui->log2_max_mv_length_horizontal, 16);
WRITE_UE_MAX (bw, vui->log2_max_mv_length_vertical, 15);
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write \"VUI Parameters\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_sps (const GstH265SPS * sps,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
guint i;
GST_DEBUG ("writing SPS");
WRITE_BITS (bw, sps->vps->id, 4);
WRITE_BITS (bw, sps->max_sub_layers_minus1, 3);
WRITE_BITS (bw, sps->temporal_id_nesting_flag, 1);
if (!_h265_bit_writer_profile_tier_level (&sps->profile_tier_level,
sps->max_sub_layers_minus1, bw, &have_space))
goto error;
WRITE_UE_MAX (bw, sps->id, GST_H265_MAX_SPS_COUNT - 1);
WRITE_UE_MAX (bw, sps->chroma_format_idc, 3);
if (sps->chroma_format_idc == 3)
WRITE_BITS (bw, sps->separate_colour_plane_flag, 1);
if (sps->pic_width_in_luma_samples < 1)
goto error;
WRITE_UE_MAX (bw, sps->pic_width_in_luma_samples, 16888);
if (sps->pic_height_in_luma_samples < 1)
goto error;
WRITE_UE_MAX (bw, sps->pic_height_in_luma_samples, 16888);
WRITE_BITS (bw, sps->conformance_window_flag, 1);
if (sps->conformance_window_flag) {
WRITE_UE (bw, sps->conf_win_left_offset);
WRITE_UE (bw, sps->conf_win_right_offset);
WRITE_UE (bw, sps->conf_win_top_offset);
WRITE_UE (bw, sps->conf_win_bottom_offset);
}
WRITE_UE_MAX (bw, sps->bit_depth_luma_minus8, 6);
WRITE_UE_MAX (bw, sps->bit_depth_chroma_minus8, 6);
WRITE_UE_MAX (bw, sps->log2_max_pic_order_cnt_lsb_minus4, 12);
WRITE_BITS (bw, sps->sub_layer_ordering_info_present_flag, 1);
for (i = (sps->sub_layer_ordering_info_present_flag ? 0 :
sps->max_sub_layers_minus1); i <= sps->max_sub_layers_minus1; i++) {
WRITE_UE_MAX (bw, sps->max_dec_pic_buffering_minus1[i], 16);
WRITE_UE_MAX (bw, sps->max_num_reorder_pics[i],
sps->max_dec_pic_buffering_minus1[i]);
WRITE_UE (bw, sps->max_latency_increase_plus1[i]);
}
/* The limits are calculted based on the profile_tier_level constraint
* in Annex-A: CtbLog2SizeY = 4 to 6 */
WRITE_UE_MAX (bw, sps->log2_min_luma_coding_block_size_minus3, 3);
WRITE_UE_MAX (bw, sps->log2_diff_max_min_luma_coding_block_size, 6);
WRITE_UE_MAX (bw, sps->log2_min_transform_block_size_minus2, 3);
WRITE_UE_MAX (bw, sps->log2_diff_max_min_transform_block_size, 3);
WRITE_UE_MAX (bw, sps->max_transform_hierarchy_depth_inter, 4);
WRITE_UE_MAX (bw, sps->max_transform_hierarchy_depth_intra, 4);
WRITE_BITS (bw, sps->scaling_list_enabled_flag, 1);
if (sps->scaling_list_enabled_flag) {
WRITE_BITS (bw, sps->scaling_list_data_present_flag, 1);
if (sps->scaling_list_data_present_flag)
if (!_h265_bit_writer_scaling_lists (&sps->scaling_list, bw, &have_space))
goto error;
}
WRITE_BITS (bw, sps->amp_enabled_flag, 1);
WRITE_BITS (bw, sps->sample_adaptive_offset_enabled_flag, 1);
WRITE_BITS (bw, sps->pcm_enabled_flag, 1);
if (sps->pcm_enabled_flag) {
WRITE_BITS (bw, sps->pcm_sample_bit_depth_luma_minus1, 4);
WRITE_BITS (bw, sps->pcm_sample_bit_depth_chroma_minus1, 4);
WRITE_UE_MAX (bw, sps->log2_min_pcm_luma_coding_block_size_minus3, 2);
WRITE_UE_MAX (bw, sps->log2_diff_max_min_pcm_luma_coding_block_size, 2);
WRITE_BITS (bw, sps->pcm_loop_filter_disabled_flag, 1);
}
WRITE_UE_MAX (bw, sps->num_short_term_ref_pic_sets, 64);
for (i = 0; i < sps->num_short_term_ref_pic_sets; i++) {
if (!_h265_bit_writer_short_term_ref_pic_set
(&sps->short_term_ref_pic_set[i], i, sps, bw, &have_space))
goto error;
}
WRITE_BITS (bw, sps->long_term_ref_pics_present_flag, 1);
if (sps->long_term_ref_pics_present_flag) {
WRITE_UE_MAX (bw, sps->num_long_term_ref_pics_sps, 32);
for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
WRITE_BITS (bw, sps->lt_ref_pic_poc_lsb_sps[i],
sps->log2_max_pic_order_cnt_lsb_minus4 + 4);
WRITE_BITS (bw, sps->used_by_curr_pic_lt_sps_flag[i], 1);
}
}
WRITE_BITS (bw, sps->temporal_mvp_enabled_flag, 1);
WRITE_BITS (bw, sps->strong_intra_smoothing_enabled_flag, 1);
WRITE_BITS (bw, sps->vui_parameters_present_flag, 1);
if (sps->vui_parameters_present_flag) {
if (!_h265_bit_writer_vui_parameters (sps, bw, &have_space))
goto error;
}
WRITE_BITS (bw, sps->sps_extension_flag, 1);
if (sps->sps_extension_flag) {
WRITE_BITS (bw, sps->sps_range_extension_flag, 1);
WRITE_BITS (bw, sps->sps_multilayer_extension_flag, 1);
WRITE_BITS (bw, sps->sps_3d_extension_flag, 1);
WRITE_BITS (bw, sps->sps_scc_extension_flag, 1);
WRITE_BITS (bw, sps->sps_extension_4bits, 4);
}
if (sps->sps_range_extension_flag) {
WRITE_BITS (bw,
sps->sps_extension_params.transform_skip_rotation_enabled_flag, 1);
WRITE_BITS (bw,
sps->sps_extension_params.transform_skip_context_enabled_flag, 1);
WRITE_BITS (bw, sps->sps_extension_params.implicit_rdpcm_enabled_flag, 1);
WRITE_BITS (bw, sps->sps_extension_params.explicit_rdpcm_enabled_flag, 1);
WRITE_BITS (bw,
sps->sps_extension_params.extended_precision_processing_flag, 1);
WRITE_BITS (bw, sps->sps_extension_params.intra_smoothing_disabled_flag, 1);
WRITE_BITS (bw,
sps->sps_extension_params.high_precision_offsets_enabled_flag, 1);
WRITE_BITS (bw,
sps->sps_extension_params.persistent_rice_adaptation_enabled_flag, 1);
WRITE_BITS (bw,
sps->sps_extension_params.cabac_bypass_alignment_enabled_flag, 1);
}
if (sps->sps_multilayer_extension_flag) {
GST_WARNING ("do not support multilayer extension");
goto error;
}
if (sps->sps_3d_extension_flag) {
GST_WARNING ("do not support 3d extension");
goto error;
}
if (sps->sps_scc_extension_flag) {
const GstH265SPSSccExtensionParams *scc_params =
&sps->sps_scc_extension_params;
WRITE_BITS (bw, scc_params->sps_curr_pic_ref_enabled_flag, 1);
WRITE_BITS (bw, scc_params->palette_mode_enabled_flag, 1);
if (scc_params->palette_mode_enabled_flag) {
WRITE_UE_MAX (bw, scc_params->palette_max_size, 64);
WRITE_UE_MAX (bw, scc_params->delta_palette_max_predictor_size,
128 - scc_params->palette_max_size);
WRITE_BITS (bw,
scc_params->sps_palette_predictor_initializers_present_flag, 1);
if (scc_params->sps_palette_predictor_initializers_present_flag) {
guint comp;
WRITE_UE_MAX (bw,
scc_params->sps_num_palette_predictor_initializer_minus1,
scc_params->palette_max_size +
scc_params->delta_palette_max_predictor_size - 1);
for (comp = 0; comp < (sps->chroma_format_idc == 0 ? 1 : 3); comp++) {
guint num_bits;
guint num =
scc_params->sps_num_palette_predictor_initializer_minus1 + 1;
num_bits = (comp == 0 ? sps->bit_depth_luma_minus8 + 8 :
sps->bit_depth_chroma_minus8 + 8);
for (i = 0; i < num; i++)
WRITE_BITS (bw,
scc_params->sps_palette_predictor_initializer[comp][i],
num_bits);
}
}
}
WRITE_BITS (bw, scc_params->motion_vector_resolution_control_idc, 2);
WRITE_BITS (bw, scc_params->intra_boundary_filtering_disabled_flag, 1);
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("failed to write SPS");
*space = have_space;
return FALSE;
}
/**
* gst_h265_bit_writer_sps:
* @sps: the sps of #GstH265SPS to write
* @start_code: whether adding the nal start code
* @data: (out): the bit stream generated by the sps
* @size: (inout): the size in bytes of the input and output
*
* Generating the according h265 bit stream by providing the sps.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_sps (const GstH265SPS * sps, gboolean start_code,
guint8 * data, guint * size)
{
gboolean have_space = TRUE;
GstBitWriter bw;
g_return_val_if_fail (sps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (sps->vps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR);
gst_bit_writer_init_with_data (&bw, data, *size, FALSE);
if (start_code)
WRITE_BITS (&bw, 0x00000001, 32);
/* NAL unit header */
/* forbidden_zero_bit */
WRITE_BITS (&bw, 0, 1);
/* nal_unit_type */
WRITE_BITS (&bw, GST_H265_NAL_SPS, 6);
/* nuh_layer_id, only support 0 now */
WRITE_BITS (&bw, 0, 6);
/* nuh_temporal_id_plus1, only support 1 now */
WRITE_BITS (&bw, 1, 3);
if (!_h265_bit_writer_sps (sps, &bw, &have_space))
goto error;
/* Add trailings. */
WRITE_BITS (&bw, 1, 1);
if (!gst_bit_writer_align_bytes (&bw, 0)) {
have_space = FALSE;
goto error;
}
*size = gst_bit_writer_get_size (&bw) / 8;
gst_bit_writer_reset (&bw);
return GST_H265_BIT_WRITER_OK;
error:
gst_bit_writer_reset (&bw);
*size = 0;
if (!have_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
static gboolean
_h265_bit_writer_pps (const GstH265PPS * pps, GstBitWriter * bw,
gboolean * space)
{
gboolean have_space = TRUE;
GST_DEBUG ("writing PPS");
WRITE_UE_MAX (bw, pps->id, GST_H265_MAX_PPS_COUNT - 1);
WRITE_UE_MAX (bw, pps->sps->id, GST_H265_MAX_SPS_COUNT - 1);
WRITE_BITS (bw, pps->dependent_slice_segments_enabled_flag, 1);
WRITE_BITS (bw, pps->output_flag_present_flag, 1);
WRITE_BITS (bw, pps->num_extra_slice_header_bits, 3);
WRITE_BITS (bw, pps->sign_data_hiding_enabled_flag, 1);
WRITE_BITS (bw, pps->cabac_init_present_flag, 1);
WRITE_UE_MAX (bw, pps->num_ref_idx_l0_default_active_minus1, 14);
WRITE_UE_MAX (bw, pps->num_ref_idx_l1_default_active_minus1, 14);
WRITE_SE_RANGE (bw, pps->init_qp_minus26,
-(26 + 6 * pps->sps->bit_depth_luma_minus8), 25);
WRITE_BITS (bw, pps->constrained_intra_pred_flag, 1);
WRITE_BITS (bw, pps->transform_skip_enabled_flag, 1);
WRITE_BITS (bw, pps->cu_qp_delta_enabled_flag, 1);
if (pps->cu_qp_delta_enabled_flag)
WRITE_UE_MAX (bw, pps->diff_cu_qp_delta_depth,
pps->sps->log2_diff_max_min_luma_coding_block_size);
WRITE_SE_RANGE (bw, pps->cb_qp_offset, -12, 12);
WRITE_SE_RANGE (bw, pps->cr_qp_offset, -12, 12);
WRITE_BITS (bw, pps->slice_chroma_qp_offsets_present_flag, 1);
WRITE_BITS (bw, pps->weighted_pred_flag, 1);
WRITE_BITS (bw, pps->weighted_bipred_flag, 1);
WRITE_BITS (bw, pps->transquant_bypass_enabled_flag, 1);
WRITE_BITS (bw, pps->tiles_enabled_flag, 1);
WRITE_BITS (bw, pps->entropy_coding_sync_enabled_flag, 1);
if (pps->tiles_enabled_flag) {
if (pps->num_tile_columns_minus1 + 1 >
G_N_ELEMENTS (pps->column_width_minus1)) {
GST_WARNING ("Invalid \"num_tile_columns_minus1\" %d",
pps->num_tile_columns_minus1);
goto error;
}
if (pps->num_tile_rows_minus1 + 1 > G_N_ELEMENTS (pps->row_height_minus1)) {
GST_WARNING ("Invalid \"num_tile_rows_minus1\" %d",
pps->num_tile_rows_minus1);
goto error;
}
WRITE_UE_MAX (bw, pps->num_tile_columns_minus1, pps->PicWidthInCtbsY - 1);
WRITE_UE_MAX (bw, pps->num_tile_rows_minus1, pps->PicHeightInCtbsY - 1);
WRITE_BITS (bw, pps->uniform_spacing_flag, 1);
/* 6.5.1, 6-4, 6-5, 7.4.3.3.1 */
if (!pps->uniform_spacing_flag) {
guint i;
for (i = 0; i < pps->num_tile_columns_minus1; i++)
WRITE_UE (bw, pps->column_width_minus1[i]);
for (i = 0; i < pps->num_tile_rows_minus1; i++)
WRITE_UE (bw, pps->row_height_minus1[i]);
}
WRITE_BITS (bw, pps->loop_filter_across_tiles_enabled_flag, 1);
}
WRITE_BITS (bw, pps->loop_filter_across_slices_enabled_flag, 1);
WRITE_BITS (bw, pps->deblocking_filter_control_present_flag, 1);
if (pps->deblocking_filter_control_present_flag) {
WRITE_BITS (bw, pps->deblocking_filter_override_enabled_flag, 1);
WRITE_BITS (bw, pps->deblocking_filter_disabled_flag, 1);
if (!pps->deblocking_filter_disabled_flag) {
WRITE_SE_RANGE (bw, pps->beta_offset_div2, -6, 6);
WRITE_SE_RANGE (bw, pps->tc_offset_div2, -6, +6);
}
}
WRITE_BITS (bw, pps->scaling_list_data_present_flag, 1);
if (pps->scaling_list_data_present_flag)
if (!_h265_bit_writer_scaling_lists (&pps->scaling_list, bw, &have_space))
goto error;
WRITE_BITS (bw, pps->lists_modification_present_flag, 1);
WRITE_UE_MAX (bw, pps->log2_parallel_merge_level_minus2, 4);
/* TODO: slice_segment_header */
if (pps->slice_segment_header_extension_present_flag) {
GST_WARNING
("slice_segment_header_extension_present_flag is not supported");
goto error;
}
WRITE_BITS (bw, pps->slice_segment_header_extension_present_flag, 1);
WRITE_BITS (bw, pps->pps_extension_flag, 1);
if (pps->pps_extension_flag) {
WRITE_BITS (bw, pps->pps_range_extension_flag, 1);
WRITE_BITS (bw, pps->pps_multilayer_extension_flag, 1);
WRITE_BITS (bw, pps->pps_3d_extension_flag, 1);
WRITE_BITS (bw, pps->pps_scc_extension_flag, 1);
WRITE_BITS (bw, pps->pps_extension_4bits, 4);
}
if (pps->pps_range_extension_flag) {
guint i;
guint32 MaxBitDepthY, MaxBitDepthC;
if (pps->transform_skip_enabled_flag)
WRITE_UE (bw,
pps->pps_extension_params.log2_max_transform_skip_block_size_minus2);
WRITE_BITS (bw,
pps->pps_extension_params.cross_component_prediction_enabled_flag, 1);
WRITE_BITS (bw,
pps->pps_extension_params.chroma_qp_offset_list_enabled_flag, 1);
if (pps->pps_extension_params.chroma_qp_offset_list_enabled_flag) {
WRITE_UE_MAX (bw,
pps->pps_extension_params.diff_cu_chroma_qp_offset_depth,
pps->sps->log2_diff_max_min_luma_coding_block_size);
WRITE_UE_MAX (bw,
pps->pps_extension_params.chroma_qp_offset_list_len_minus1, 5);
for (i = 0;
i <= pps->pps_extension_params.chroma_qp_offset_list_len_minus1;
i++) {
WRITE_SE_RANGE (bw, pps->pps_extension_params.cb_qp_offset_list[i],
-12, 12);
WRITE_SE_RANGE (bw, pps->pps_extension_params.cr_qp_offset_list[i],
-12, 12);
}
}
MaxBitDepthY = pps->sps->bit_depth_luma_minus8 > 2 ?
pps->sps->bit_depth_luma_minus8 - 2 : 0;
MaxBitDepthC = pps->sps->bit_depth_chroma_minus8 > 2 ?
pps->sps->bit_depth_chroma_minus8 - 2 : 0;
WRITE_UE_MAX (bw, pps->pps_extension_params.log2_sao_offset_scale_luma,
MaxBitDepthY);
WRITE_UE_MAX (bw, pps->pps_extension_params.log2_sao_offset_scale_chroma,
MaxBitDepthC);
}
if (pps->pps_multilayer_extension_flag) {
GST_WARNING ("do not support multilayer extension");
goto error;
}
if (pps->pps_3d_extension_flag) {
GST_WARNING ("do not support 3d extension");
goto error;
}
if (pps->pps_scc_extension_flag) {
const GstH265PPSSccExtensionParams *pps_scc =
&pps->pps_scc_extension_params;
WRITE_BITS (bw, pps_scc->pps_curr_pic_ref_enabled_flag, 1);
WRITE_BITS (bw,
pps_scc->residual_adaptive_colour_transform_enabled_flag, 1);
if (pps_scc->residual_adaptive_colour_transform_enabled_flag) {
WRITE_BITS (bw, pps_scc->pps_slice_act_qp_offsets_present_flag, 1);
WRITE_SE_RANGE (bw, (gint8) pps_scc->pps_act_y_qp_offset_plus5, -7, 17);
WRITE_SE_RANGE (bw, (gint8) pps_scc->pps_act_cb_qp_offset_plus5, -7, 17);
WRITE_SE_RANGE (bw, (gint8) pps_scc->pps_act_cr_qp_offset_plus3, -9, 15);
}
WRITE_BITS (bw,
pps_scc->pps_palette_predictor_initializers_present_flag, 1);
if (pps_scc->pps_palette_predictor_initializers_present_flag) {
guint i;
WRITE_UE_MAX (bw,
pps_scc->pps_num_palette_predictor_initializer,
pps->sps->sps_scc_extension_params.palette_max_size +
pps->sps->sps_scc_extension_params.delta_palette_max_predictor_size);
if (pps_scc->pps_num_palette_predictor_initializer > 0) {
guint comp;
WRITE_BITS (bw, pps_scc->monochrome_palette_flag, 1);
/* It is a requirement of bitstream conformance that the value of
luma_bit_depth_entry_minus8 shall be equal to the value of
bit_depth_luma_minus8 */
WRITE_UE_MAX (bw, pps_scc->luma_bit_depth_entry_minus8,
pps->sps->bit_depth_luma_minus8);
if (!pps_scc->monochrome_palette_flag) {
/* It is a requirement of bitstream conformance that the value
of chroma_bit_depth_entry_minus8 shall be equal to the value
of bit_depth_chroma_minus8. */
WRITE_UE_MAX (bw, pps_scc->chroma_bit_depth_entry_minus8,
pps->sps->bit_depth_chroma_minus8);
}
for (comp = 0; comp < (pps_scc->monochrome_palette_flag ? 1 : 3);
comp++) {
guint num_bits;
guint num = pps_scc->pps_num_palette_predictor_initializer;
num_bits = (comp == 0 ?
pps_scc->luma_bit_depth_entry_minus8 + 8 :
pps_scc->chroma_bit_depth_entry_minus8 + 8);
for (i = 0; i < num; i++)
WRITE_BITS (bw,
pps_scc->pps_palette_predictor_initializer[comp][i], num_bits);
}
}
}
}
return TRUE;
error:
GST_WARNING ("failed to write PPS");
return FALSE;
}
/**
* gst_h265_bit_writer_pps:
* @pps: the pps of #GstH265PPS to write
* @start_code: whether adding the nal start code
* @data: (out): the bit stream generated by the pps
* @size: (inout): the size in bytes of the input and output
*
* Generating the according h265 bit stream by providing the pps.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_pps (const GstH265PPS * pps, gboolean start_code,
guint8 * data, guint * size)
{
gboolean have_space = TRUE;
GstBitWriter bw;
g_return_val_if_fail (pps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (pps->sps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR);
gst_bit_writer_init_with_data (&bw, data, *size, FALSE);
if (start_code)
WRITE_BITS (&bw, 0x00000001, 32);
/* NAL unit header */
/* forbidden_zero_bit */
WRITE_BITS (&bw, 0, 1);
/* nal_unit_type */
WRITE_BITS (&bw, GST_H265_NAL_PPS, 6);
/* nuh_layer_id, only support 0 now */
WRITE_BITS (&bw, 0, 6);
/* nuh_temporal_id_plus1, only support 1 now */
WRITE_BITS (&bw, 1, 3);
if (!_h265_bit_writer_pps (pps, &bw, &have_space))
goto error;
/* Add trailings. */
WRITE_BITS (&bw, 1, 1);
if (!gst_bit_writer_align_bytes (&bw, 0)) {
have_space = FALSE;
goto error;
}
*size = gst_bit_writer_get_size (&bw) / 8;
gst_bit_writer_reset (&bw);
return GST_H265_BIT_WRITER_OK;
error:
gst_bit_writer_reset (&bw);
*size = 0;
if (!have_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
static gboolean
_h265_slice_bit_writer_ref_pic_list_modification (const GstH265SliceHdr *
slice, gint NumPocTotalCurr, GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
guint i;
const GstH265RefPicListModification *rpl_mod =
&slice->ref_pic_list_modification;
const guint n = gst_util_ceil_log2 (NumPocTotalCurr);
WRITE_BITS (bw, rpl_mod->ref_pic_list_modification_flag_l0, 1);
if (rpl_mod->ref_pic_list_modification_flag_l0) {
for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++) {
/* 7.4.7.2 list_entry_l0 */
WRITE_BITS (bw, rpl_mod->list_entry_l0[i], n);
}
}
if (GST_H265_IS_B_SLICE (slice)) {
WRITE_BITS (bw, rpl_mod->ref_pic_list_modification_flag_l1, 1);
if (rpl_mod->ref_pic_list_modification_flag_l1)
for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++) {
WRITE_BITS (bw, rpl_mod->list_entry_l1[i], n);
}
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write \"Reference picture list modifications\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_slice_bit_writer_pred_weight_table (const GstH265SliceHdr * slice,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
const GstH265PredWeightTable *p;
const GstH265PPS *pps = slice->pps;
const GstH265SPS *sps = pps->sps;
gint i, j;
GST_DEBUG ("writing \"Prediction weight table\"");
p = &slice->pred_weight_table;
WRITE_UE_MAX (bw, p->luma_log2_weight_denom, 7);
if (sps->chroma_format_idc != 0) {
WRITE_SE_RANGE (bw, p->delta_chroma_log2_weight_denom,
(0 - p->luma_log2_weight_denom), (7 - p->luma_log2_weight_denom));
}
for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++)
WRITE_BITS (bw, p->luma_weight_l0_flag[i], 1);
if (sps->chroma_format_idc != 0)
for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++)
WRITE_BITS (bw, p->chroma_weight_l0_flag[i], 1);
for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++) {
if (p->luma_weight_l0_flag[i]) {
WRITE_SE_RANGE (bw, p->delta_luma_weight_l0[i], -128, 127);
WRITE_SE_RANGE (bw, p->luma_offset_l0[i], -128, 127);
}
if (p->chroma_weight_l0_flag[i])
for (j = 0; j < 2; j++) {
WRITE_SE_RANGE (bw, p->delta_chroma_weight_l0[i][j], -128, 127);
WRITE_SE_RANGE (bw, p->delta_chroma_offset_l0[i][j], -512, 511);
}
}
if (GST_H265_IS_B_SLICE (slice)) {
for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++)
WRITE_BITS (bw, p->luma_weight_l1_flag[i], 1);
if (sps->chroma_format_idc != 0)
for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++)
WRITE_BITS (bw, p->chroma_weight_l1_flag[i], 1);
for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++) {
if (p->luma_weight_l1_flag[i]) {
WRITE_SE_RANGE (bw, p->delta_luma_weight_l1[i], -128, 127);
WRITE_SE_RANGE (bw, p->luma_offset_l1[i], -128, 127);
}
if (p->chroma_weight_l1_flag[i])
for (j = 0; j < 2; j++) {
WRITE_SE_RANGE (bw, p->delta_chroma_weight_l1[i][j], -128, 127);
WRITE_SE_RANGE (bw, p->delta_chroma_offset_l1[i][j], -512, 511);
}
}
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write \"Prediction weight table\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_slice_header (const GstH265SliceHdr * slice,
guint32 nal_type, GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
guint i;
const GstH265SPS *sps = slice->pps->sps;
const GstH265PPSSccExtensionParams *pps_scc_extension_params =
&slice->pps->pps_scc_extension_params;
const GstH265PPSExtensionParams *pps_extension_params =
&slice->pps->pps_extension_params;
GST_DEBUG ("writing slice header");
WRITE_BITS (bw, slice->first_slice_segment_in_pic_flag, 1);
if (GST_H265_IS_NAL_TYPE_IRAP (nal_type))
WRITE_BITS (bw, slice->no_output_of_prior_pics_flag, 1);
WRITE_UE_MAX (bw, slice->pps->id, GST_H265_MAX_PPS_COUNT - 1);
if (!slice->first_slice_segment_in_pic_flag) {
guint32 PicSizeInCtbsY;
guint32 PicWidthInCtbsY;
guint32 PicHeightInCtbsY;
guint32 CtbSizeY, MinCbLog2SizeY, CtbLog2SizeY;
guint n;
/* We can not directly use slice->pps->PicWidthInCtbsY/PicHeightInCtbsY,
they are calculated value when parsing but may not have value here. */
MinCbLog2SizeY = sps->log2_min_luma_coding_block_size_minus3 + 3;
CtbLog2SizeY =
MinCbLog2SizeY + sps->log2_diff_max_min_luma_coding_block_size;
CtbSizeY = 1 << CtbLog2SizeY;
PicHeightInCtbsY = div_ceil (sps->pic_height_in_luma_samples, CtbSizeY);
PicWidthInCtbsY = div_ceil (sps->pic_width_in_luma_samples, CtbSizeY);
PicSizeInCtbsY = PicWidthInCtbsY * PicHeightInCtbsY;
n = gst_util_ceil_log2 (PicSizeInCtbsY);
if (slice->pps->dependent_slice_segments_enabled_flag)
WRITE_BITS (bw, slice->dependent_slice_segment_flag, 1);
/* 7.4.7.1 slice_segment_address parsing */
WRITE_BITS (bw, slice->segment_address, n);
}
if (!slice->dependent_slice_segment_flag) {
for (i = 0; i < slice->pps->num_extra_slice_header_bits; i++) {
/* slice_reserved_flag */
WRITE_BITS (bw, 0, 1);
}
WRITE_UE_MAX (bw, slice->type, 63);
if (slice->pps->output_flag_present_flag)
WRITE_BITS (bw, slice->pic_output_flag, 1);
if (sps->separate_colour_plane_flag == 1)
WRITE_BITS (bw, slice->colour_plane_id, 2);
if (!GST_H265_IS_NAL_TYPE_IDR (nal_type)) {
WRITE_BITS (bw, slice->pic_order_cnt_lsb,
(sps->log2_max_pic_order_cnt_lsb_minus4 + 4));
WRITE_BITS (bw, slice->short_term_ref_pic_set_sps_flag, 1);
if (!slice->short_term_ref_pic_set_sps_flag) {
if (!_h265_bit_writer_short_term_ref_pic_set
(&slice->short_term_ref_pic_sets, sps->num_short_term_ref_pic_sets,
slice->pps->sps, bw, &have_space))
goto error;
} else if (sps->num_short_term_ref_pic_sets > 1) {
const guint n = gst_util_ceil_log2 (sps->num_short_term_ref_pic_sets);
if (slice->short_term_ref_pic_set_idx >
sps->num_short_term_ref_pic_sets - 1)
goto error;
/* 7.4.7.1 short_term_ref_pic_set_idx */
WRITE_BITS (bw, slice->short_term_ref_pic_set_idx, n);
}
if (sps->long_term_ref_pics_present_flag) {
guint32 limit;
if (sps->num_long_term_ref_pics_sps > 0)
WRITE_UE_MAX (bw, slice->num_long_term_sps,
sps->num_long_term_ref_pics_sps);
WRITE_UE_MAX (bw, slice->num_long_term_pics, 16);
limit = slice->num_long_term_sps + slice->num_long_term_pics;
for (i = 0; i < limit; i++) {
if (i < slice->num_long_term_sps) {
if (sps->num_long_term_ref_pics_sps > 1) {
/* 7.4.7.1 lt_idx_sps */
const guint n =
gst_util_ceil_log2 (sps->num_long_term_ref_pics_sps);
WRITE_BITS (bw, slice->lt_idx_sps[i], n);
}
} else {
WRITE_BITS (bw, slice->poc_lsb_lt[i],
(sps->log2_max_pic_order_cnt_lsb_minus4 + 4));
WRITE_BITS (bw, slice->used_by_curr_pic_lt_flag[i], 1);
}
WRITE_BITS (bw, slice->delta_poc_msb_present_flag[i], 1);
if (slice->delta_poc_msb_present_flag[i])
WRITE_UE (bw, slice->delta_poc_msb_cycle_lt[i]);
}
}
if (sps->temporal_mvp_enabled_flag)
WRITE_BITS (bw, slice->temporal_mvp_enabled_flag, 1);
}
if (sps->sample_adaptive_offset_enabled_flag) {
gboolean ChromaArrayType =
sps->separate_colour_plane_flag == 0 ? sps->chroma_format_idc : 0;
WRITE_BITS (bw, slice->sao_luma_flag, 1);
if (ChromaArrayType)
WRITE_BITS (bw, slice->sao_chroma_flag, 1);
}
if (GST_H265_IS_B_SLICE (slice) || GST_H265_IS_P_SLICE (slice)) {
WRITE_BITS (bw, slice->num_ref_idx_active_override_flag, 1);
if (slice->num_ref_idx_active_override_flag) {
WRITE_UE_MAX (bw, slice->num_ref_idx_l0_active_minus1, 14);
if (GST_H265_IS_B_SLICE (slice))
WRITE_UE_MAX (bw, slice->num_ref_idx_l1_active_minus1, 14);
}
if (slice->pps->lists_modification_present_flag
&& slice->NumPocTotalCurr > 1) {
if (!_h265_slice_bit_writer_ref_pic_list_modification (slice,
slice->NumPocTotalCurr, bw, &have_space))
goto error;
}
if (GST_H265_IS_B_SLICE (slice))
WRITE_BITS (bw, slice->mvd_l1_zero_flag, 1);
if (slice->pps->cabac_init_present_flag)
WRITE_BITS (bw, slice->cabac_init_flag, 1);
if (slice->temporal_mvp_enabled_flag) {
if (GST_H265_IS_B_SLICE (slice))
WRITE_BITS (bw, slice->collocated_from_l0_flag, 1);
if ((slice->collocated_from_l0_flag
&& slice->num_ref_idx_l0_active_minus1 > 0)
|| (!slice->collocated_from_l0_flag
&& slice->num_ref_idx_l1_active_minus1 > 0)) {
if ((GST_H265_IS_P_SLICE (slice))
|| ((GST_H265_IS_B_SLICE (slice))
&& (slice->collocated_from_l0_flag))) {
WRITE_UE_MAX (bw, slice->collocated_ref_idx,
slice->num_ref_idx_l0_active_minus1);
} else if ((GST_H265_IS_B_SLICE (slice))
&& (!slice->collocated_from_l0_flag)) {
WRITE_UE_MAX (bw, slice->collocated_ref_idx,
slice->num_ref_idx_l1_active_minus1);
}
}
}
if ((slice->pps->weighted_pred_flag && GST_H265_IS_P_SLICE (slice)) ||
(slice->pps->weighted_bipred_flag && GST_H265_IS_B_SLICE (slice)))
if (!_h265_slice_bit_writer_pred_weight_table (slice, bw, &have_space))
goto error;
WRITE_UE_MAX (bw, slice->five_minus_max_num_merge_cand, 4);
if (sps->sps_scc_extension_params.motion_vector_resolution_control_idc
== 2)
WRITE_BITS (bw, slice->use_integer_mv_flag, 1);
}
WRITE_SE_RANGE (bw, slice->qp_delta, -87, 77);
if (slice->pps->slice_chroma_qp_offsets_present_flag) {
WRITE_SE_RANGE (bw, slice->cb_qp_offset, -12, 12);
WRITE_SE_RANGE (bw, slice->cr_qp_offset, -12, 12);
}
if (pps_scc_extension_params->pps_slice_act_qp_offsets_present_flag) {
WRITE_SE_RANGE (bw, slice->slice_act_y_qp_offset, -12, 12);
WRITE_SE_RANGE (bw, slice->slice_act_cb_qp_offset, -12, 12);
WRITE_SE_RANGE (bw, slice->slice_act_cr_qp_offset, -12, 12);
}
if (pps_extension_params->chroma_qp_offset_list_enabled_flag)
WRITE_BITS (bw, slice->cu_chroma_qp_offset_enabled_flag, 1);
if (slice->pps->deblocking_filter_override_enabled_flag)
WRITE_BITS (bw, slice->deblocking_filter_override_flag, 1);
if (slice->deblocking_filter_override_flag) {
WRITE_BITS (bw, slice->deblocking_filter_disabled_flag, 1);
if (!slice->deblocking_filter_disabled_flag) {
WRITE_SE_RANGE (bw, slice->beta_offset_div2, -6, 6);
WRITE_SE_RANGE (bw, slice->tc_offset_div2, -6, 6);
}
}
if (slice->pps->loop_filter_across_slices_enabled_flag &&
(slice->sao_luma_flag || slice->sao_chroma_flag ||
!slice->deblocking_filter_disabled_flag))
WRITE_BITS (bw, slice->loop_filter_across_slices_enabled_flag, 1);
}
if (slice->pps->tiles_enabled_flag
|| slice->pps->entropy_coding_sync_enabled_flag) {
guint32 offset_max;
if (!slice->pps->tiles_enabled_flag
&& slice->pps->entropy_coding_sync_enabled_flag) {
offset_max = slice->pps->PicHeightInCtbsY - 1;
} else if (slice->pps->tiles_enabled_flag
&& !slice->pps->entropy_coding_sync_enabled_flag) {
offset_max =
(slice->pps->num_tile_columns_minus1 +
1) * (slice->pps->num_tile_rows_minus1 + 1) - 1;
} else {
offset_max =
(slice->pps->num_tile_columns_minus1 +
1) * slice->pps->PicHeightInCtbsY - 1;
}
WRITE_UE_MAX (bw, slice->num_entry_point_offsets, offset_max);
if (slice->num_entry_point_offsets > 0) {
WRITE_UE_MAX (bw, slice->offset_len_minus1, 31);
for (i = 0; i < slice->num_entry_point_offsets; i++)
WRITE_BITS (bw, slice->entry_point_offset_minus1[i],
(slice->offset_len_minus1 + 1));
}
}
/* TODO */
if (slice->pps->slice_segment_header_extension_present_flag) {
GST_WARNING
("slice_segment_header_extension_present_flag is not supported");
goto error;
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write slice header");
*space = have_space;
return FALSE;
}
/**
* gst_h265_bit_writer_slice_hdr:
* @slice: the slice header of #GstH265SliceHdr to write
* @start_code: whether adding the nal start code
* @nal_type: the slice's nal type of #GstH265NalUnitType
* @data: (out): the bit stream generated by the slice header
* @size: (inout): the size in bytes of the input and output
*
* Generating the according h265 bit stream by providing the slice header.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_slice_hdr (const GstH265SliceHdr * slice,
gboolean start_code, guint32 nal_type, guint8 * data, guint * size)
{
gboolean have_space = TRUE;
GstBitWriter bw;
g_return_val_if_fail (slice != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (slice->pps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (slice->pps->sps != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (nal_type <= GST_H265_NAL_SLICE_CRA_NUT,
GST_H265_BIT_WRITER_ERROR);
gst_bit_writer_init_with_data (&bw, data, *size, FALSE);
if (start_code)
WRITE_BITS (&bw, 0x00000001, 32);
/* NAL unit header */
/* forbidden_zero_bit */
WRITE_BITS (&bw, 0, 1);
/* nal_unit_type */
WRITE_BITS (&bw, nal_type, 6);
/* nuh_layer_id, only support 0 now */
WRITE_BITS (&bw, 0, 6);
/* nuh_temporal_id_plus1, only support 1 now */
WRITE_BITS (&bw, 1, 3);
if (!_h265_bit_writer_slice_header (slice, nal_type, &bw, &have_space))
goto error;
/* Add trailings. */
WRITE_BITS (&bw, 1, 1);
if (!gst_bit_writer_align_bytes (&bw, 0)) {
have_space = FALSE;
goto error;
}
*size = gst_bit_writer_get_size (&bw) / 8;
gst_bit_writer_reset (&bw);
return GST_H265_BIT_WRITER_OK;
error:
gst_bit_writer_reset (&bw);
*size = 0;
if (!have_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
static gboolean
_h265_bit_writer_sei_registered_user_data (const GstH265RegisteredUserData *
rud, GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
GST_DEBUG ("Writing \"Registered user data\"");
WRITE_BITS (bw, rud->country_code, 8);
if (rud->country_code == 0xff)
WRITE_BITS (bw, rud->country_code_extension, 8);
WRITE_BYTES (bw, rud->data, rud->size);
*space = TRUE;
return TRUE;
error:
GST_DEBUG ("Failed to write \"Registered user data\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_sei_time_code (const GstH265TimeCode * tc,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
gint i;
GST_DEBUG ("Wrtiting \"Time code\"");
WRITE_BITS (bw, tc->num_clock_ts, 2);
for (i = 0; i < tc->num_clock_ts; i++) {
WRITE_BITS (bw, tc->clock_timestamp_flag[i], 1);
if (tc->clock_timestamp_flag[i]) {
WRITE_BITS (bw, tc->units_field_based_flag[i], 1);
WRITE_BITS (bw, tc->counting_type[i], 5);
WRITE_BITS (bw, tc->full_timestamp_flag[i], 1);
WRITE_BITS (bw, tc->discontinuity_flag[i], 1);
WRITE_BITS (bw, tc->cnt_dropped_flag[i], 1);
WRITE_BITS (bw, tc->n_frames[i], 9);
if (tc->full_timestamp_flag[i]) {
WRITE_BITS (bw, tc->seconds_value[i], 6);
WRITE_BITS (bw, tc->minutes_value[i], 6);
WRITE_BITS (bw, tc->hours_value[i], 5);
} else {
WRITE_BITS (bw, tc->seconds_flag[i], 1);
if (tc->seconds_flag[i]) {
WRITE_BITS (bw, tc->seconds_value[i], 6);
WRITE_BITS (bw, tc->minutes_flag[i], 1);
if (tc->minutes_flag[i]) {
WRITE_BITS (bw, tc->minutes_value[i], 6);
WRITE_BITS (bw, tc->hours_flag[i], 1);
if (tc->hours_flag[i]) {
WRITE_BITS (bw, tc->hours_value[i], 5);
}
}
}
}
}
WRITE_BITS (bw, tc->time_offset_length[i], 5);
if (tc->time_offset_length[i] > 0)
WRITE_BITS (bw, tc->time_offset_value[i], tc->time_offset_length[i]);
}
*space = TRUE;
return TRUE;
error:
GST_WARNING ("Failed to write \"Time code\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_sei_mastering_display_colour_volume (const
GstH265MasteringDisplayColourVolume * mdcv, GstBitWriter * bw,
gboolean * space)
{
gboolean have_space = TRUE;
gint i;
GST_DEBUG ("Wrtiting \"Mastering display colour volume\"");
for (i = 0; i < 3; i++) {
WRITE_BITS (bw, mdcv->display_primaries_x[i], 16);
WRITE_BITS (bw, mdcv->display_primaries_y[i], 16);
}
WRITE_BITS (bw, mdcv->white_point_x, 16);
WRITE_BITS (bw, mdcv->white_point_y, 16);
WRITE_BITS (bw, mdcv->max_display_mastering_luminance, 32);
WRITE_BITS (bw, mdcv->min_display_mastering_luminance, 32);
*space = TRUE;
return TRUE;
error:
GST_WARNING ("Failed to write \"Mastering display colour volume\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_sei_content_light_level_info (const
GstH265ContentLightLevel * cll, GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
GST_DEBUG ("Writing \"Content light level\"");
WRITE_BITS (bw, cll->max_content_light_level, 16);
WRITE_BITS (bw, cll->max_pic_average_light_level, 16);
*space = TRUE;
return TRUE;
error:
GST_WARNING ("Failed to write \"Content light level\"");
*space = have_space;
return FALSE;
}
static gboolean
_h265_bit_writer_sei_message (const GstH265SEIMessage * msg,
GstBitWriter * bw, gboolean * space)
{
gboolean have_space = TRUE;
GST_DEBUG ("writing SEI message");
switch (msg->payloadType) {
case GST_H265_SEI_REGISTERED_USER_DATA:
if (!_h265_bit_writer_sei_registered_user_data
(&msg->payload.registered_user_data, bw, &have_space))
goto error;
break;
case GST_H265_SEI_TIME_CODE:
if (!_h265_bit_writer_sei_time_code
(&msg->payload.time_code, bw, &have_space))
goto error;
break;
case GST_H265_SEI_MASTERING_DISPLAY_COLOUR_VOLUME:
if (!_h265_bit_writer_sei_mastering_display_colour_volume
(&msg->payload.mastering_display_colour_volume, bw, &have_space))
goto error;
break;
case GST_H265_SEI_CONTENT_LIGHT_LEVEL:
if (!_h265_bit_writer_sei_content_light_level_info
(&msg->payload.content_light_level, bw, &have_space))
goto error;
break;
default:
break;
}
/* Add trailings. */
WRITE_BITS (bw, 1, 1);
gst_bit_writer_align_bytes_unchecked (bw, 0);
*space = TRUE;
return TRUE;
error:
GST_WARNING ("error to write SEI message");
*space = have_space;
return FALSE;
}
/**
* gst_h265_bit_writer_sei:
* @sei_messages: An array of #GstH265SEIMessage to write
* @start_code: whether adding the nal start code
* @data: (out): the bit stream generated by the sei messages
* @size: (inout): the size in bytes of the input and output
*
* Generating the according h265 bit stream by providing sei messages.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_sei (GArray * sei_messages,
GstH265NalUnitType nal_type, gboolean start_code, guint8 * data,
guint * size)
{
gboolean have_space = TRUE;
GstBitWriter bw;
GstH265SEIMessage *sei;
gboolean have_written_data = FALSE;
guint i;
g_return_val_if_fail (sei_messages != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (nal_type == GST_H265_NAL_PREFIX_SEI
|| nal_type == GST_H265_NAL_SUFFIX_SEI, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR);
if (nal_type == GST_H265_NAL_PREFIX_SEI) {
GST_WARNING ("prefix sei is not supported");
return GST_H265_BIT_WRITER_ERROR;
}
gst_bit_writer_init_with_data (&bw, data, *size, FALSE);
if (start_code)
WRITE_BITS (&bw, 0x00000001, 32);
/* NAL unit header */
/* forbidden_zero_bit */
WRITE_BITS (&bw, 0, 1);
/* nal_unit_type */
WRITE_BITS (&bw, nal_type, 6);
/* nuh_layer_id, only support 0 now */
WRITE_BITS (&bw, 0, 6);
/* nuh_temporal_id_plus1, only support 1 now */
WRITE_BITS (&bw, 1, 3);
for (i = 0; i < sei_messages->len; i++) {
guint32 payload_size_data;
guint32 payload_type_data;
gst_bit_writer_init (&bw);
sei = &g_array_index (sei_messages, GstH265SEIMessage, i);
if (!_h265_bit_writer_sei_message (sei, &bw, &have_space))
goto error;
if (gst_bit_writer_get_size (&bw) == 0) {
GST_FIXME ("Unsupported SEI type %d", sei->payloadType);
continue;
}
have_written_data = TRUE;
g_assert (gst_bit_writer_get_size (&bw) % 8 == 0);
payload_size_data = (gst_bit_writer_get_size (&bw) + 7) / 8;
payload_type_data = sei->payloadType;
/* write payload type bytes */
while (payload_type_data >= 0xff) {
WRITE_BITS (&bw, 0xff, 8);
payload_type_data -= -0xff;
}
WRITE_BITS (&bw, payload_type_data, 8);
/* write payload size bytes */
while (payload_size_data >= 0xff) {
WRITE_BITS (&bw, 0xff, 8);
payload_size_data -= -0xff;
}
WRITE_BITS (&bw, payload_size_data, 8);
if (gst_bit_writer_get_size (&bw) / 8)
WRITE_BYTES (&bw, gst_bit_writer_get_data (&bw),
gst_bit_writer_get_size (&bw) / 8);
gst_bit_writer_reset (&bw);
}
if (!have_written_data) {
GST_WARNING ("No written sei data");
goto error;
}
/* Add trailings. */
WRITE_BITS (&bw, 1, 1);
if (!gst_bit_writer_align_bytes (&bw, 0)) {
have_space = FALSE;
goto error;
}
*size = gst_bit_writer_get_size (&bw) / 8;
gst_bit_writer_reset (&bw);
return GST_H265_BIT_WRITER_OK;
error:
gst_bit_writer_reset (&bw);
*size = 0;
if (!have_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
/**
* gst_h265_bit_writer_aud:
* @pic_type: indicate the possible slice types list just
* as the H265 spec Table 7-2 defines
* @start_code: whether adding the nal start code
* @data: (out): the bit stream generated by the aud
* @size: (inout): the size in bytes of the input and output
*
* Generating the according h265 bit stream of an aud.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_aud (guint8 pic_type, gboolean start_code,
guint8 * data, guint * size)
{
gboolean have_space = TRUE;
GstBitWriter bw;
g_return_val_if_fail (pic_type <= 2, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR);
gst_bit_writer_init_with_data (&bw, data, *size, FALSE);
if (start_code)
WRITE_BITS (&bw, 0x00000001, 32);
/* NAL unit header */
/* forbidden_zero_bit */
WRITE_BITS (&bw, 0, 1);
/* nal_unit_type */
WRITE_BITS (&bw, GST_H265_NAL_AUD, 6);
/* nuh_layer_id, only support 0 now */
WRITE_BITS (&bw, 0, 6);
/* nuh_temporal_id_plus1, only support 1 now */
WRITE_BITS (&bw, 1, 3);
WRITE_BITS (&bw, pic_type, 3);
/* Add trailings. */
WRITE_BITS (&bw, 1, 1);
if (!gst_bit_writer_align_bytes (&bw, 0)) {
have_space = FALSE;
goto error;
}
*size = gst_bit_writer_get_size (&bw) / 8;
gst_bit_writer_reset (&bw);
return GST_H265_BIT_WRITER_OK;
error:
gst_bit_writer_reset (&bw);
*size = 0;
if (!have_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
/**
* gst_h265_bit_writer_convert_to_nal:
* @nal_prefix_size: the size in bytes for the prefix of a nal, may
* be 2, 3 or 4
* @packetized: whether to write the bit stream in packetized format,
* which does not have the start code but has a @nal_prefix_size bytes'
* size prepending to the real nal data
* @has_startcode: whether the input already has a start code
* @add_trailings: whether to add rbsp trailing bits to make the output
* aligned to byte
* @raw_data: the input bit stream
* @raw_size: the size in bits of the input bit stream
* @nal_data: (out): the output bit stream converted to a real nal
* @nal_size: (inout): the size in bytes of the output
*
* Converting a bit stream into a real nal packet. If the bit stream already
* has a start code, it will be replaced by the new one specified by the
* @nal_prefix_size and @packetized. It is assured that the output aligns to
* the byte and the all the emulations are inserted.
*
* Returns: a #GstH265BitWriterResult
*
* Since: 1.22
**/
GstH265BitWriterResult
gst_h265_bit_writer_convert_to_nal (guint nal_prefix_size,
gboolean packetized, gboolean has_startcode, gboolean add_trailings,
const guint8 * raw_data, gsize raw_size, guint8 * nal_data,
guint * nal_size)
{
NalWriter nw;
guint8 *data;
guint32 size = 0;
gboolean need_more_space = FALSE;
g_return_val_if_fail (
(packetized && nal_prefix_size > 1 && nal_prefix_size < 5) ||
(!packetized && (nal_prefix_size == 3 || nal_prefix_size == 4)),
GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (raw_data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (raw_size > 0, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (raw_size / 8 <= G_MAXUINT, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (nal_data != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (nal_size != NULL, GST_H265_BIT_WRITER_ERROR);
g_return_val_if_fail (*nal_size > 0, GST_H265_BIT_WRITER_ERROR);
if (has_startcode) {
/* Skip the start code, the NalWriter will add it automatically. */
if (raw_size >= 4 && raw_data[0] == 0
&& raw_data[1] == 0 && raw_data[2] == 0 && raw_data[3] == 0x01) {
raw_data += 4;
raw_size -= 4 * 8;
} else if (raw_size >= 3 && raw_data[0] == 0 && raw_data[1] == 0
&& raw_data[2] == 0x01) {
raw_data += 3;
raw_size -= 3 * 8;
} else {
/* Fail to find the start code. */
g_return_val_if_reached (GST_H265_BIT_WRITER_ERROR);
}
}
/* If no RBSP trailing needed, it must align to byte. We assume
that the rbsp trailing bits are already added. */
if (!add_trailings)
g_return_val_if_fail (raw_size % 8 == 0, GST_H265_BIT_WRITER_ERROR);
nal_writer_init (&nw, nal_prefix_size, packetized);
if (!nal_writer_put_bytes (&nw, raw_data, (guint) (raw_size / 8)))
goto error;
if (raw_size % 8) {
guint8 data = *(raw_data + raw_size / 8);
if (!nal_writer_put_bits_uint8 (&nw,
data >> (8 - raw_size % 8), raw_size % 8))
goto error;
}
if (add_trailings) {
if (!nal_writer_do_rbsp_trailing_bits (&nw))
goto error;
}
data = nal_writer_reset_and_get_data (&nw, &size);
if (!data)
goto error;
if (size > *nal_size) {
need_more_space = TRUE;
g_free (data);
goto error;
}
memcpy (nal_data, data, size);
*nal_size = size;
g_free (data);
nal_writer_reset (&nw);
return GST_H265_BIT_WRITER_OK;
error:
nal_writer_reset (&nw);
*nal_size = 0;
GST_WARNING ("Failed to convert nal data");
if (need_more_space)
return GST_H265_BIT_WRITER_NO_MORE_SPACE;
return GST_H265_BIT_WRITER_INVALID_DATA;
}
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