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gstreamer/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c

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/* GStreamer
* Copyright (C) 2021 Intel Corporation
* Author: He Junyan <junyan.he@intel.com>
* Author: Víctor Jáquez <vjaquez@igalia.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 the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-vah264enc
* @title: vah264enc
* @short_description: A VA-API based H264 video encoder
*
* vah264enc encodes raw video VA surfaces into H.264 bitstreams using
* the installed and chosen [VA-API](https://01.org/linuxmedia/vaapi)
* driver.
*
* The raw video frames in main memory can be imported into VA surfaces.
*
* ## Example launch line
* ```
* gst-launch-1.0 videotestsrc num-buffers=60 ! timeoverlay ! vah264enc ! h264parse ! mp4mux ! filesink location=test.mp4
* ```
*
* Since: 1.22
*
*/
/* @TODO:
* 1. Look ahead, which can optimize the slice type and QP.
* 2. Field encoding.
* 3. The stereo encoding such as the frame-packing or MVC.
* 4. Weight prediction of B frame.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvah264enc.h"
#include <gst/codecparsers/gsth264bitwriter.h>
#include <gst/va/gstva.h>
#include <gst/va/gstvavideoformat.h>
#include <gst/va/vasurfaceimage.h>
#include <gst/video/video.h>
#include <va/va_drmcommon.h>
#include "gstvabaseenc.h"
#include "gstvacaps.h"
#include "gstvadisplay_priv.h"
#include "gstvaencoder.h"
#include "gstvaprofile.h"
#include "vacompat.h"
GST_DEBUG_CATEGORY_STATIC (gst_va_h264enc_debug);
#define GST_CAT_DEFAULT gst_va_h264enc_debug
#define GST_VA_H264_ENC(obj) ((GstVaH264Enc *) obj)
#define GST_VA_H264_ENC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G_TYPE_FROM_INSTANCE (obj), GstVaH264EncClass))
#define GST_VA_H264_ENC_CLASS(klass) ((GstVaH264EncClass *) klass)
typedef struct _GstVaH264Enc GstVaH264Enc;
typedef struct _GstVaH264EncClass GstVaH264EncClass;
typedef struct _GstVaH264EncFrame GstVaH264EncFrame;
typedef struct _GstVaH264LevelLimits GstVaH264LevelLimits;
enum
{
PROP_KEY_INT_MAX = 1,
PROP_BFRAMES,
PROP_IFRAMES,
PROP_NUM_REF_FRAMES,
PROP_B_PYRAMID,
PROP_NUM_SLICES,
PROP_MIN_QP,
PROP_MAX_QP,
PROP_QP_I,
PROP_QP_P,
PROP_QP_B,
PROP_DCT8X8,
PROP_CABAC,
PROP_TRELLIS,
PROP_MBBRC,
PROP_BITRATE,
PROP_TARGET_PERCENTAGE,
PROP_TARGET_USAGE,
PROP_RATE_CONTROL,
PROP_CPB_SIZE,
PROP_AUD,
N_PROPERTIES
};
static GParamSpec *properties[N_PROPERTIES];
static GstElementClass *parent_class = NULL;
/* Scale factor for bitrate (HRD bit_rate_scale: min = 6) */
#define SX_BITRATE 6
/* Scale factor for CPB size (HRD cpb_size_scale: min = 4) */
#define SX_CPB_SIZE 4
/* Maximum sizes for common headers (in bits) */
#define MAX_SPS_HDR_SIZE 16473
#define MAX_VUI_PARAMS_SIZE 210
#define MAX_HRD_PARAMS_SIZE 4103
#define MAX_PPS_HDR_SIZE 101
#define MAX_SLICE_HDR_SIZE 397 + 2572 + 6670 + 2402
#define MAX_GOP_SIZE 1024
/* *INDENT-OFF* */
struct _GstVaH264EncClass
{
GstVaBaseEncClass parent_class;
GType rate_control_type;
char rate_control_type_name[64];
GEnumValue rate_control[16];
};
/* *INDENT-ON* */
struct _GstVaH264Enc
{
/*< private > */
GstVaBaseEnc parent;
/* properties */
struct
{
/* kbps */
guint bitrate;
/* VA_RC_XXX */
guint32 rc_ctrl;
guint key_int_max;
guint32 num_ref_frames;
gboolean b_pyramid;
guint32 num_bframes;
guint32 num_iframes;
guint32 min_qp;
guint32 max_qp;
guint32 qp_i;
guint32 qp_p;
guint32 qp_b;
gboolean use_cabac;
gboolean use_dct8x8;
gboolean use_trellis;
gboolean aud;
guint32 mbbrc;
guint32 num_slices;
guint32 cpb_size;
guint32 target_percentage;
guint32 target_usage;
} prop;
/* H264 fields */
gint mb_width;
gint mb_height;
guint8 level_idc;
const gchar *level_str;
/* Minimum Compression Ratio (A.3.1) */
guint min_cr;
gboolean use_cabac;
gboolean use_dct8x8;
gboolean use_trellis;
gboolean aud;
guint32 num_slices;
guint32 packed_headers;
struct
{
/* frames between two IDR [idr, ...., idr) */
guint32 idr_period;
/* How may IDRs we have encoded */
guint32 total_idr_count;
/* frames between I/P and P frames [I, B, B, .., B, P) */
guint32 ip_period;
/* frames between I frames [I, B, B, .., B, P, ..., I), open GOP */
guint32 i_period;
/* B frames between I/P and P. */
guint32 num_bframes;
/* Use B pyramid structure in the GOP. */
gboolean b_pyramid;
/* Level 0 is the simple B not acting as ref. */
guint32 highest_pyramid_level;
/* If open GOP, I frames within a GOP. */
guint32 num_iframes;
/* A map of all frames types within a GOP. */
struct
{
guint8 slice_type;
gboolean is_ref;
guint8 pyramid_level;
/* Only for b pyramid */
gint left_ref_poc_diff;
gint right_ref_poc_diff;
} frame_types[MAX_GOP_SIZE];
/* current index in the frames types map. */
guint cur_frame_index;
/* Number of ref frames within current GOP. H264's frame num. */
gint cur_frame_num;
/* Max frame num within a GOP. */
guint32 max_frame_num;
guint32 log2_max_frame_num;
/* Max poc within a GOP. */
guint32 max_pic_order_cnt;
guint32 log2_max_pic_order_cnt;
/* Total ref frames of list0 and list1. */
guint32 num_ref_frames;
guint32 ref_num_list0;
guint32 ref_num_list1;
guint num_reorder_frames;
} gop;
struct
{
guint target_usage;
guint32 rc_ctrl_mode;
guint32 min_qp;
guint32 max_qp;
guint32 qp_i;
guint32 qp_p;
guint32 qp_b;
/* macroblock bitrate control */
guint32 mbbrc;
guint target_bitrate;
guint target_percentage;
guint max_bitrate;
/* bitrate (bits) */
guint max_bitrate_bits;
guint target_bitrate_bits;
/* length of CPB buffer */
guint cpb_size;
/* length of CPB buffer (bits) */
guint cpb_length_bits;
} rc;
GstH264SPS sequence_hdr;
};
struct _GstVaH264EncFrame
{
GstVaEncodePicture *picture;
GstH264SliceType type;
gboolean is_ref;
guint pyramid_level;
/* Only for b pyramid */
gint left_ref_poc_diff;
gint right_ref_poc_diff;
gint poc;
gint frame_num;
/* The pic_num will be marked as unused_for_reference, which is
* replaced by this frame. -1 if we do not need to care about it
* explicitly. */
gint unused_for_reference_pic_num;
/* The total frame count we handled. */
guint total_frame_count;
gboolean last_frame;
};
/**
* GstVaH264LevelLimits:
* @name: the level name
* @level_idc: the H.264 level_idc value
* @MaxMBPS: the maximum macroblock processing rate (MB/sec)
* @MaxFS: the maximum frame size (MBs)
* @MaxDpbMbs: the maxium decoded picture buffer size (MBs)
* @MaxBR: the maximum video bit rate (kbps)
* @MaxCPB: the maximum CPB size (kbits)
* @MinCR: the minimum Compression Ratio
*
* The data structure that describes the limits of an H.264 level.
*/
struct _GstVaH264LevelLimits
{
const gchar *name;
guint8 level_idc;
guint32 MaxMBPS;
guint32 MaxFS;
guint32 MaxDpbMbs;
guint32 MaxBR;
guint32 MaxCPB;
guint32 MinCR;
};
/* Table A-1 - Level limits */
/* *INDENT-OFF* */
static const GstVaH264LevelLimits _va_h264_level_limits[] = {
/* level idc MaxMBPS MaxFS MaxDpbMbs MaxBR MaxCPB MinCr */
{ "1", 10, 1485, 99, 396, 64, 175, 2 },
{ "1b", 11, 1485, 99, 396, 128, 350, 2 },
{ "1.1", 11, 3000, 396, 900, 192, 500, 2 },
{ "1.2", 12, 6000, 396, 2376, 384, 1000, 2 },
{ "1.3", 13, 11880, 396, 2376, 768, 2000, 2 },
{ "2", 20, 11880, 396, 2376, 2000, 2000, 2 },
{ "2.1", 21, 19800, 792, 4752, 4000, 4000, 2 },
{ "2.2", 22, 20250, 1620, 8100, 4000, 4000, 2 },
{ "3", 30, 40500, 1620, 8100, 10000, 10000, 2 },
{ "3.1", 31, 108000, 3600, 18000, 14000, 14000, 4 },
{ "3.2", 32, 216000, 5120, 20480, 20000, 20000, 4 },
{ "4", 40, 245760, 8192, 32768, 20000, 25000, 4 },
{ "4.1", 41, 245760, 8192, 32768, 50000, 62500, 2 },
{ "4.2", 42, 522240, 8704, 34816, 50000, 62500, 2 },
{ "5", 50, 589824, 22080, 110400, 135000, 135000, 2 },
{ "5.1", 51, 983040, 36864, 184320, 240000, 240000, 2 },
{ "5.2", 52, 2073600, 36864, 184320, 240000, 240000, 2 },
{ "6", 60, 4177920, 139264, 696320, 240000, 240000, 2 },
{ "6.1", 61, 8355840, 139264, 696320, 480000, 480000, 2 },
{ "6.2", 62, 16711680, 139264, 696320, 800000, 800000, 2 },
};
/* *INDENT-ON* */
#ifndef GST_DISABLE_GST_DEBUG
static const gchar *
_slice_type_name (GstH264SliceType type)
{
switch (type) {
case GST_H264_P_SLICE:
return "P";
case GST_H264_B_SLICE:
return "B";
case GST_H264_I_SLICE:
return "I";
default:
g_assert_not_reached ();
}
return NULL;
}
static const gchar *
_rate_control_get_name (guint32 rc_mode)
{
GParamSpecEnum *spec;
guint i;
if (!(properties[PROP_RATE_CONTROL]
&& G_IS_PARAM_SPEC_ENUM (properties[PROP_RATE_CONTROL])))
return NULL;
spec = G_PARAM_SPEC_ENUM (properties[PROP_RATE_CONTROL]);
for (i = 0; i < spec->enum_class->n_values; i++) {
if (spec->enum_class->values[i].value == rc_mode)
return spec->enum_class->values[i].value_nick;
}
return NULL;
}
#endif
static GstVaH264EncFrame *
gst_va_enc_frame_new (void)
{
GstVaH264EncFrame *frame;
frame = g_slice_new (GstVaH264EncFrame);
frame->frame_num = 0;
frame->unused_for_reference_pic_num = -1;
frame->picture = NULL;
frame->total_frame_count = 0;
frame->last_frame = FALSE;
return frame;
}
static void
gst_va_enc_frame_free (gpointer pframe)
{
GstVaH264EncFrame *frame = pframe;
g_clear_pointer (&frame->picture, gst_va_encode_picture_free);
g_slice_free (GstVaH264EncFrame, frame);
}
static inline GstVaH264EncFrame *
_enc_frame (GstVideoCodecFrame * frame)
{
GstVaH264EncFrame *enc_frame = gst_video_codec_frame_get_user_data (frame);
g_assert (enc_frame);
return enc_frame;
}
/* Normalizes bitrate (and CPB size) for HRD conformance */
static void
_calculate_bitrate_hrd (GstVaH264Enc * self)
{
guint bitrate_bits, cpb_bits_size;
/* Round down bitrate. This is a hard limit mandated by the user */
g_assert (SX_BITRATE >= 6);
bitrate_bits = (self->rc.max_bitrate * 1000) & ~((1U << SX_BITRATE) - 1);
GST_DEBUG_OBJECT (self, "Max bitrate: %u bits/sec", bitrate_bits);
self->rc.max_bitrate_bits = bitrate_bits;
bitrate_bits = (self->rc.target_bitrate * 1000) & ~((1U << SX_BITRATE) - 1);
GST_DEBUG_OBJECT (self, "Target bitrate: %u bits/sec", bitrate_bits);
self->rc.target_bitrate_bits = bitrate_bits;
if (self->rc.cpb_size > 0 && self->rc.cpb_size < (self->rc.max_bitrate / 2)) {
GST_INFO_OBJECT (self, "Too small cpb_size: %d", self->rc.cpb_size);
self->rc.cpb_size = 0;
}
if (self->rc.cpb_size == 0) {
/* We cache 2 second coded data by default. */
self->rc.cpb_size = self->rc.max_bitrate * 2;
GST_INFO_OBJECT (self, "Adjust cpb_size to: %d", self->rc.cpb_size);
}
/* Round up CPB size. This is an HRD compliance detail */
g_assert (SX_CPB_SIZE >= 4);
cpb_bits_size = (self->rc.cpb_size * 1000) & ~((1U << SX_CPB_SIZE) - 1);
GST_DEBUG_OBJECT (self, "HRD CPB size: %u bits", cpb_bits_size);
self->rc.cpb_length_bits = cpb_bits_size;
}
#define update_property(type, obj, old_val, new_val, prop_id) \
gst_va_base_enc_update_property_##type (obj, old_val, new_val, properties[prop_id])
#define update_property_uint(obj, old_val, new_val, prop_id) \
update_property (uint, obj, old_val, new_val, prop_id)
#define update_property_bool(obj, old_val, new_val, prop_id) \
update_property (bool, obj, old_val, new_val, prop_id)
/* Estimates a good enough bitrate if none was supplied */
static void
_ensure_rate_control (GstVaH264Enc * self)
{
/* User can specify the properties of: "bitrate", "target-percentage",
* "max-qp", "min-qp", "qpi", "qpp", "qpb", "mbbrc", "cpb-size",
* "rate-control" and "target-usage" to control the RC behavior.
*
* "target-usage" is different from the others, it controls the encoding
* speed and quality, while the others control encoding bit rate and
* quality. The lower value has better quality(maybe bigger MV search
* range) but slower speed, the higher value has faster speed but lower
* quality.
*
* The possible composition to control the bit rate and quality:
*
* 1. CQP mode: "rate-control=cqp", then "qpi", "qpp" and "qpb"
* specify the QP of I/P/B frames respectively(within the
* "max-qp" and "min-qp" range). The QP will not change during
* the whole stream. Other properties are ignored.
*
* 2. CBR mode: "rate-control=CBR", then the "bitrate" specify the
* target bit rate and the "cpb-size" specifies the max coded
* picture buffer size to avoid overflow. If the "bitrate" is not
* set, it is calculated by the picture resolution and frame
* rate. If "cpb-size" is not set, it is set to the size of
* caching 2 second coded data. Encoder will try its best to make
* the QP with in the ["max-qp", "min-qp"] range. "mbbrc" can
* enable bit rate control in macro block level. Other paramters
* are ignored.
*
* 3. VBR mode: "rate-control=VBR", then the "bitrate" specify the
* target bit rate, "target-percentage" is used to calculate the
* max bit rate of VBR mode by ("bitrate" * 100) /
* "target-percentage". It is also used by driver to calculate
* the min bit rate. The "cpb-size" specifies the max coded
* picture buffer size to avoid overflow. If the "bitrate" is not
* set, the target bit rate will be calculated by the picture
* resolution and frame rate. Encoder will try its best to make
* the QP with in the ["max-qp", "min-qp"] range. "mbbrc" can
* enable bit rate control in macro block level. Other paramters
* are ignored.
*
* 4. VCM mode: "rate-control=VCM", then the "bitrate" specify the
* target bit rate, and encoder will try its best to make the QP
* with in the ["max-qp", "min-qp"] range. Other paramters are
* ignored.
*/
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint bitrate;
guint32 rc_ctrl, rc_mode, quality_level;
quality_level = gst_va_encoder_get_quality_level (base->encoder,
base->profile, base->entrypoint);
if (self->rc.target_usage > quality_level) {
GST_INFO_OBJECT (self, "User setting target-usage: %d is not supported, "
"fallback to %d", self->rc.target_usage, quality_level);
self->rc.target_usage = quality_level;
update_property_uint (base, &self->prop.target_usage, self->rc.target_usage,
PROP_TARGET_USAGE);
}
GST_OBJECT_LOCK (self);
rc_ctrl = self->prop.rc_ctrl;
GST_OBJECT_UNLOCK (self);
if (rc_ctrl != VA_RC_NONE) {
rc_mode = gst_va_encoder_get_rate_control_mode (base->encoder,
base->profile, base->entrypoint);
if (!(rc_mode & rc_ctrl)) {
guint32 defval =
G_PARAM_SPEC_ENUM (properties[PROP_RATE_CONTROL])->default_value;
GST_INFO_OBJECT (self, "The rate control mode %s is not supported, "
"fallback to %s mode", _rate_control_get_name (rc_ctrl),
_rate_control_get_name (defval));
self->rc.rc_ctrl_mode = defval;
update_property_uint (base, &self->prop.rc_ctrl, self->rc.rc_ctrl_mode,
PROP_RATE_CONTROL);
}
} else {
self->rc.rc_ctrl_mode = VA_RC_NONE;
}
if (self->rc.min_qp > self->rc.max_qp) {
GST_INFO_OBJECT (self, "The min_qp %d is bigger than the max_qp %d, "
"set it to the max_qp", self->rc.min_qp, self->rc.max_qp);
self->rc.min_qp = self->rc.max_qp;
update_property_uint (base, &self->prop.min_qp, self->rc.min_qp,
PROP_MIN_QP);
}
/* Make all the qp in the valid range */
if (self->rc.qp_i < self->rc.min_qp) {
if (self->rc.qp_i != 26)
GST_INFO_OBJECT (self, "The qp_i %d is smaller than the min_qp %d, "
"set it to the min_qp", self->rc.qp_i, self->rc.min_qp);
self->rc.qp_i = self->rc.min_qp;
}
if (self->rc.qp_i > self->rc.max_qp) {
if (self->rc.qp_i != 26)
GST_INFO_OBJECT (self, "The qp_i %d is bigger than the max_qp %d, "
"set it to the max_qp", self->rc.qp_i, self->rc.max_qp);
self->rc.qp_i = self->rc.max_qp;
}
if (self->rc.qp_p < self->rc.min_qp) {
if (self->rc.qp_p != 26)
GST_INFO_OBJECT (self, "The qp_p %d is smaller than the min_qp %d, "
"set it to the min_qp", self->rc.qp_p, self->rc.min_qp);
self->rc.qp_p = self->rc.min_qp;
}
if (self->rc.qp_p > self->rc.max_qp) {
if (self->rc.qp_p != 26)
GST_INFO_OBJECT (self, "The qp_p %d is bigger than the max_qp %d, "
"set it to the max_qp", self->rc.qp_p, self->rc.max_qp);
self->rc.qp_p = self->rc.max_qp;
}
if (self->rc.qp_b < self->rc.min_qp) {
if (self->rc.qp_b != 26)
GST_INFO_OBJECT (self, "The qp_b %d is smaller than the min_qp %d, "
"set it to the min_qp", self->rc.qp_b, self->rc.min_qp);
self->rc.qp_b = self->rc.min_qp;
}
if (self->rc.qp_b > self->rc.max_qp) {
if (self->rc.qp_b != 26)
GST_INFO_OBJECT (self, "The qp_b %d is bigger than the max_qp %d, "
"set it to the max_qp", self->rc.qp_b, self->rc.max_qp);
self->rc.qp_b = self->rc.max_qp;
}
GST_OBJECT_LOCK (self);
bitrate = self->prop.bitrate;
GST_OBJECT_UNLOCK (self);
/* Calculate a bitrate is not set. */
if ((self->rc.rc_ctrl_mode == VA_RC_CBR || self->rc.rc_ctrl_mode == VA_RC_VBR
|| self->rc.rc_ctrl_mode == VA_RC_VCM) && bitrate == 0) {
/* Default compression: 48 bits per macroblock in "high-compression" mode */
guint bits_per_mb = 48;
guint64 factor;
/* According to the literature and testing, CABAC entropy coding
* mode could provide for +10% to +18% improvement in general,
* thus estimating +15% here ; and using adaptive 8x8 transforms
* in I-frames could bring up to +10% improvement. */
if (!self->use_cabac)
bits_per_mb += (bits_per_mb * 15) / 100;
if (!self->use_dct8x8)
bits_per_mb += (bits_per_mb * 10) / 100;
factor = (guint64) self->mb_width * self->mb_height * bits_per_mb;
bitrate = gst_util_uint64_scale (factor,
GST_VIDEO_INFO_FPS_N (&base->input_state->info),
GST_VIDEO_INFO_FPS_D (&base->input_state->info)) / 1000;
GST_INFO_OBJECT (self, "target bitrate computed to %u kbps", bitrate);
}
/* Adjust the setting based on RC mode. */
switch (self->rc.rc_ctrl_mode) {
case VA_RC_CQP:
self->rc.max_bitrate = 0;
self->rc.target_bitrate = 0;
self->rc.target_percentage = 0;
self->rc.cpb_size = 0;
break;
case VA_RC_CBR:
self->rc.max_bitrate = bitrate;
self->rc.target_bitrate = bitrate;
self->rc.target_percentage = 100;
self->rc.qp_i = self->rc.qp_p = self->rc.qp_b = 26;
break;
case VA_RC_VBR:
g_assert (self->rc.target_percentage >= 10);
self->rc.max_bitrate = (guint) gst_util_uint64_scale_int (bitrate,
100, self->rc.target_percentage);
self->rc.target_bitrate = bitrate;
self->rc.qp_i = self->rc.qp_p = self->rc.qp_b = 26;
break;
case VA_RC_VCM:
self->rc.max_bitrate = bitrate;
self->rc.target_bitrate = bitrate;
self->rc.target_percentage = 0;
self->rc.qp_i = self->rc.qp_p = self->rc.qp_b = 26;
self->rc.cpb_size = 0;
if (self->gop.num_bframes > 0) {
GST_INFO_OBJECT (self, "VCM mode just support I/P mode, no B frame");
self->gop.num_bframes = 0;
self->gop.b_pyramid = FALSE;
}
break;
}
if (self->rc.rc_ctrl_mode != VA_RC_CQP)
_calculate_bitrate_hrd (self);
/* update & notifications */
update_property_uint (base, &self->prop.bitrate, bitrate, PROP_BITRATE);
update_property_uint (base, &self->prop.cpb_size, self->rc.cpb_size,
PROP_CPB_SIZE);
update_property_uint (base, &self->prop.target_percentage,
self->rc.target_percentage, PROP_TARGET_PERCENTAGE);
update_property_uint (base, &self->prop.qp_i, self->rc.qp_i, PROP_QP_I);
update_property_uint (base, &self->prop.qp_p, self->rc.qp_p, PROP_QP_P);
update_property_uint (base, &self->prop.qp_b, self->rc.qp_b, PROP_QP_B);
}
static guint
_get_h264_cpb_nal_factor (VAProfile profile)
{
guint f;
/* Table A-2 */
switch (profile) {
case VAProfileH264High:
f = 1500;
break;
case VAProfileH264ConstrainedBaseline:
case VAProfileH264Main:
f = 1200;
break;
case VAProfileH264MultiviewHigh:
case VAProfileH264StereoHigh:
f = 1500; /* H.10.2.1 (r) */
break;
default:
g_assert_not_reached ();
f = 1200;
break;
}
return f;
}
/* Derives the level from the currently set limits */
static gboolean
_calculate_level (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
const guint cpb_factor = _get_h264_cpb_nal_factor (base->profile);
guint i, PicSizeMbs, MaxDpbMbs, MaxMBPS;
PicSizeMbs = self->mb_width * self->mb_height;
MaxDpbMbs = PicSizeMbs * (self->gop.num_ref_frames + 1);
MaxMBPS = gst_util_uint64_scale_int_ceil (PicSizeMbs,
GST_VIDEO_INFO_FPS_N (&base->input_state->info),
GST_VIDEO_INFO_FPS_D (&base->input_state->info));
for (i = 0; i < G_N_ELEMENTS (_va_h264_level_limits); i++) {
const GstVaH264LevelLimits *const limits = &_va_h264_level_limits[i];
if (PicSizeMbs <= limits->MaxFS && MaxDpbMbs <= limits->MaxDpbMbs
&& MaxMBPS <= limits->MaxMBPS && (!self->rc.max_bitrate_bits
|| self->rc.max_bitrate_bits <= (limits->MaxBR * 1000 * cpb_factor))
&& (!self->rc.cpb_length_bits
|| self->rc.cpb_length_bits <=
(limits->MaxCPB * 1000 * cpb_factor))) {
self->level_idc = _va_h264_level_limits[i].level_idc;
self->level_str = _va_h264_level_limits[i].name;
self->min_cr = _va_h264_level_limits[i].MinCR;
return TRUE;
}
}
GST_ERROR_OBJECT (self,
"failed to find a suitable level matching codec config");
return FALSE;
}
static void
_validate_parameters (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
gint32 max_slices;
/* Ensure the num_slices provided by the user not exceed the limit
* of the number of slices permitted by the stream and by the
* hardware. */
g_assert (self->num_slices >= 1);
max_slices = gst_va_encoder_get_max_slice_num (base->encoder,
base->profile, base->entrypoint);
if (self->num_slices > max_slices)
self->num_slices = max_slices;
/* The stream size limit. */
if (self->num_slices > ((self->mb_width * self->mb_height + 1) / 2))
self->num_slices = ((self->mb_width * self->mb_height + 1) / 2);
update_property_uint (base, &self->prop.num_slices,
self->num_slices, PROP_NUM_SLICES);
/* Ensure trellis. */
if (self->use_trellis &&
!gst_va_encoder_has_trellis (base->encoder, base->profile,
base->entrypoint)) {
GST_INFO_OBJECT (self, "The trellis is not supported");
self->use_trellis = FALSE;
}
update_property_bool (base, &self->prop.use_trellis, self->use_trellis,
PROP_TRELLIS);
}
/* Get log2_max_frame_num_minus4, log2_max_pic_order_cnt_lsb_minus4
* value, shall be in the range of 0 to 12, inclusive. */
static guint
_get_log2_max_num (guint num)
{
guint ret = 0;
while (num) {
++ret;
num >>= 1;
}
/* shall be in the range of 0+4 to 12+4, inclusive. */
if (ret < 4) {
ret = 4;
} else if (ret > 16) {
ret = 16;
}
return ret;
}
static void
_print_gop_structure (GstVaH264Enc * self)
{
#ifndef GST_DISABLE_GST_DEBUG
GString *str;
gint i;
if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) < GST_LEVEL_INFO)
return;
str = g_string_new (NULL);
g_string_append_printf (str, "[ ");
for (i = 0; i < self->gop.idr_period; i++) {
if (i == 0) {
g_string_append_printf (str, "IDR");
continue;
} else {
g_string_append_printf (str, ", ");
}
g_string_append_printf (str, "%s",
_slice_type_name (self->gop.frame_types[i].slice_type));
if (self->gop.b_pyramid
&& self->gop.frame_types[i].slice_type == GST_H264_B_SLICE) {
g_string_append_printf (str, "<L%d (%d, %d)>",
self->gop.frame_types[i].pyramid_level,
self->gop.frame_types[i].left_ref_poc_diff,
self->gop.frame_types[i].right_ref_poc_diff);
}
if (self->gop.frame_types[i].is_ref) {
g_string_append_printf (str, "(ref)");
}
}
g_string_append_printf (str, " ]");
GST_INFO_OBJECT (self, "GOP size: %d, forward reference %d, backward"
" reference %d, GOP structure: %s", self->gop.idr_period,
self->gop.ref_num_list0, self->gop.ref_num_list1, str->str);
g_string_free (str, TRUE);
#endif
}
struct PyramidInfo
{
guint level;
gint left_ref_poc_diff;
gint right_ref_poc_diff;
};
static void
_set_pyramid_info (struct PyramidInfo *info, guint len,
guint current_level, guint highest_level)
{
guint index;
g_assert (len >= 1);
if (current_level == highest_level || len == 1) {
for (index = 0; index < len; index++) {
info[index].level = current_level;
info[index].left_ref_poc_diff = (index + 1) * -2;
info[index].right_ref_poc_diff = (len - index) * 2;
}
return;
}
index = len / 2;
info[index].level = current_level;
info[index].left_ref_poc_diff = (index + 1) * -2;
info[index].right_ref_poc_diff = (len - index) * 2;
current_level++;
if (index > 0)
_set_pyramid_info (info, index, current_level, highest_level);
if (index + 1 < len)
_set_pyramid_info (&info[index + 1], len - (index + 1),
current_level, highest_level);
}
static void
_create_gop_frame_types (GstVaH264Enc * self)
{
guint i;
guint i_frames = self->gop.num_iframes;
struct PyramidInfo pyramid_info[31] = { 0, };
if (self->gop.highest_pyramid_level > 0) {
g_assert (self->gop.num_bframes > 0);
_set_pyramid_info (pyramid_info, self->gop.num_bframes,
0, self->gop.highest_pyramid_level);
}
g_assert (self->gop.idr_period <= MAX_GOP_SIZE);
for (i = 0; i < self->gop.idr_period; i++) {
if (i == 0) {
self->gop.frame_types[i].slice_type = GST_H264_I_SLICE;
self->gop.frame_types[i].is_ref = TRUE;
continue;
}
/* Intra only stream. */
if (self->gop.ip_period == 0) {
self->gop.frame_types[i].slice_type = GST_H264_I_SLICE;
self->gop.frame_types[i].is_ref = FALSE;
continue;
}
if (i % self->gop.ip_period) {
guint pyramid_index =
i % self->gop.ip_period - 1 /* The first P or IDR */ ;
self->gop.frame_types[i].slice_type = GST_H264_B_SLICE;
self->gop.frame_types[i].pyramid_level =
pyramid_info[pyramid_index].level;
self->gop.frame_types[i].is_ref =
(self->gop.frame_types[i].pyramid_level <
self->gop.highest_pyramid_level);
self->gop.frame_types[i].left_ref_poc_diff =
pyramid_info[pyramid_index].left_ref_poc_diff;
self->gop.frame_types[i].right_ref_poc_diff =
pyramid_info[pyramid_index].right_ref_poc_diff;
continue;
}
if (self->gop.i_period && i % self->gop.i_period == 0 && i_frames > 0) {
/* Replace P with I. */
self->gop.frame_types[i].slice_type = GST_H264_I_SLICE;
self->gop.frame_types[i].is_ref = TRUE;
i_frames--;
continue;
}
self->gop.frame_types[i].slice_type = GST_H264_P_SLICE;
self->gop.frame_types[i].is_ref = TRUE;
}
/* Force the last one to be a P */
if (self->gop.idr_period > 1 && self->gop.ip_period > 0) {
self->gop.frame_types[self->gop.idr_period - 1].slice_type =
GST_H264_P_SLICE;
self->gop.frame_types[self->gop.idr_period - 1].is_ref = TRUE;
}
}
/* Consider the idr_period, num_bframes, L0/L1 reference number.
* TODO: Load some preset fixed GOP structure.
* TODO: Skip this if in lookahead mode. */
static void
_generate_gop_structure (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint32 list0, list1, gop_ref_num;
gint32 p_frames;
/* If not set, generate a idr every second */
if (self->gop.idr_period == 0) {
self->gop.idr_period = (GST_VIDEO_INFO_FPS_N (&base->input_state->info)
+ GST_VIDEO_INFO_FPS_D (&base->input_state->info) - 1) /
GST_VIDEO_INFO_FPS_D (&base->input_state->info);
}
/* Do not use a too huge GOP size. */
if (self->gop.idr_period > 1024) {
self->gop.idr_period = 1024;
GST_INFO_OBJECT (self, "Lowering the GOP size to %d", self->gop.idr_period);
}
update_property_uint (base, &self->prop.key_int_max, self->gop.idr_period,
PROP_KEY_INT_MAX);
/* Prefer have more than 1 refs for the GOP which is not very small. */
if (self->gop.idr_period > 8) {
if (self->gop.num_bframes > (self->gop.idr_period - 1) / 2) {
self->gop.num_bframes = (self->gop.idr_period - 1) / 2;
GST_INFO_OBJECT (self, "Lowering the number of num_bframes to %d",
self->gop.num_bframes);
}
} else {
/* beign and end should be ref */
if (self->gop.num_bframes > self->gop.idr_period - 1 - 1) {
if (self->gop.idr_period > 1) {
self->gop.num_bframes = self->gop.idr_period - 1 - 1;
} else {
self->gop.num_bframes = 0;
}
GST_INFO_OBJECT (self, "Lowering the number of num_bframes to %d",
self->gop.num_bframes);
}
}
if (!gst_va_encoder_get_max_num_reference (base->encoder, base->profile,
base->entrypoint, &list0, &list1)) {
GST_INFO_OBJECT (self, "Failed to get the max num reference");
list0 = 1;
list1 = 0;
}
if (list0 > self->gop.num_ref_frames)
list0 = self->gop.num_ref_frames;
if (list1 > self->gop.num_ref_frames)
list1 = self->gop.num_ref_frames;
if (list0 == 0) {
GST_INFO_OBJECT (self,
"No reference support, fallback to intra only stream");
/* It does not make sense that if only the list1 exists. */
self->gop.num_ref_frames = 0;
self->gop.ip_period = 0;
self->gop.num_bframes = 0;
self->gop.b_pyramid = FALSE;
self->gop.highest_pyramid_level = 0;
self->gop.num_iframes = self->gop.idr_period - 1 /* The idr */ ;
self->gop.ref_num_list0 = 0;
self->gop.ref_num_list1 = 0;
goto create_poc;
}
if (self->gop.num_ref_frames <= 1) {
GST_INFO_OBJECT (self, "The number of reference frames is only %d,"
" no B frame allowed, fallback to I/P mode", self->gop.num_ref_frames);
self->gop.num_bframes = 0;
list1 = 0;
}
/* b_pyramid needs at least 1 ref for B, besides the I/P */
if (self->gop.b_pyramid && self->gop.num_ref_frames <= 2) {
GST_INFO_OBJECT (self, "The number of reference frames is only %d,"
" not enough for b_pyramid", self->gop.num_ref_frames);
self->gop.b_pyramid = FALSE;
}
if (list1 == 0 && self->gop.num_bframes > 0) {
GST_INFO_OBJECT (self,
"No hw reference support for list 1, fallback to I/P mode");
self->gop.num_bframes = 0;
self->gop.b_pyramid = FALSE;
}
/* I/P mode, no list1 needed. */
if (self->gop.num_bframes == 0)
list1 = 0;
/* Not enough B frame, no need for b_pyramid. */
if (self->gop.num_bframes <= 1)
self->gop.b_pyramid = FALSE;
/* b pyramid has only one backward ref. */
if (self->gop.b_pyramid)
list1 = 1;
if (self->gop.num_ref_frames > list0 + list1) {
self->gop.num_ref_frames = list0 + list1;
GST_INFO_OBJECT (self, "HW limits, lowering the number of reference"
" frames to %d", self->gop.num_ref_frames);
}
/* How many possible refs within a GOP. */
gop_ref_num = (self->gop.idr_period + self->gop.num_bframes) /
(self->gop.num_bframes + 1);
/* The end ref */
if (self->gop.num_bframes > 0
/* frame_num % (self->gop.num_bframes + 1) happens to be the end P */
&& (self->gop.idr_period % (self->gop.num_bframes + 1) != 1))
gop_ref_num++;
/* Adjust reference num based on B frames and B pyramid. */
if (self->gop.num_bframes == 0) {
self->gop.b_pyramid = FALSE;
self->gop.ref_num_list0 = self->gop.num_ref_frames;
self->gop.ref_num_list1 = 0;
} else if (self->gop.b_pyramid) {
guint b_frames = self->gop.num_bframes;
guint b_refs;
/* b pyramid has only one backward ref. */
g_assert (list1 == 1);
self->gop.ref_num_list1 = list1;
self->gop.ref_num_list0 =
self->gop.num_ref_frames - self->gop.ref_num_list1;
b_frames = b_frames / 2;
b_refs = 0;
while (b_frames) {
/* At least 1 B ref for each level, plus begin and end 2 P/I */
b_refs += 1;
if (b_refs + 2 > self->gop.num_ref_frames)
break;
self->gop.highest_pyramid_level++;
b_frames = b_frames / 2;
}
GST_INFO_OBJECT (self, "pyramid level is %d",
self->gop.highest_pyramid_level);
} else {
/* We prefer list0. Backward refs have more latency. */
self->gop.ref_num_list1 = 1;
self->gop.ref_num_list0 =
self->gop.num_ref_frames - self->gop.ref_num_list1;
/* Balance the forward and backward refs, but not cause a big latency. */
while ((self->gop.num_bframes * self->gop.ref_num_list1 <= 16)
&& (self->gop.ref_num_list1 <= gop_ref_num)
&& (self->gop.ref_num_list1 < list1)
&& (self->gop.ref_num_list0 / self->gop.ref_num_list1 > 4)) {
self->gop.ref_num_list0--;
self->gop.ref_num_list1++;
}
if (self->gop.ref_num_list0 > list0)
self->gop.ref_num_list0 = list0;
}
/* It's OK, keep slots for GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME frame. */
if (self->gop.ref_num_list0 > gop_ref_num)
GST_DEBUG_OBJECT (self, "num_ref_frames %d is bigger than gop_ref_num %d",
self->gop.ref_num_list0, gop_ref_num);
/* Include the ref picture itself. */
self->gop.ip_period = 1 + self->gop.num_bframes;
p_frames = gop_ref_num - 1 /* IDR */ ;
if (p_frames < 0)
p_frames = 0;
if (self->gop.num_iframes > p_frames) {
self->gop.num_iframes = p_frames;
GST_INFO_OBJECT (self, "Too many I frames insertion, lowering it to %d",
self->gop.num_iframes);
}
if (self->gop.num_iframes > 0) {
guint total_i_frames = self->gop.num_iframes + 1 /* IDR */ ;
self->gop.i_period =
(gop_ref_num / total_i_frames) * (self->gop.num_bframes + 1);
}
create_poc:
/* init max_frame_num, max_poc */
self->gop.log2_max_frame_num = _get_log2_max_num (self->gop.idr_period);
self->gop.max_frame_num = (1 << self->gop.log2_max_frame_num);
self->gop.log2_max_pic_order_cnt = self->gop.log2_max_frame_num + 1;
self->gop.max_pic_order_cnt = (1 << self->gop.log2_max_pic_order_cnt);
self->gop.num_reorder_frames = self->gop.b_pyramid ?
self->gop.highest_pyramid_level * 2 + 1 /* the last P frame. */ :
self->gop.ref_num_list1;
/* Should not exceed the max ref num. */
self->gop.num_reorder_frames =
MIN (self->gop.num_reorder_frames, self->gop.num_ref_frames);
self->gop.num_reorder_frames = MIN (self->gop.num_reorder_frames, 16);
_create_gop_frame_types (self);
_print_gop_structure (self);
/* updates & notifications */
update_property_uint (base, &self->prop.num_ref_frames,
self->gop.num_ref_frames, PROP_NUM_REF_FRAMES);
update_property_uint (base, &self->prop.num_iframes, self->gop.num_iframes,
PROP_IFRAMES);
}
static void
_calculate_coded_size (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint codedbuf_size = 0;
if (base->profile == VAProfileH264High
|| base->profile == VAProfileH264MultiviewHigh
|| base->profile == VAProfileH264StereoHigh) {
/* The number of bits of macroblock_layer( ) data for any macroblock
is not greater than 128 + RawMbBits */
guint RawMbBits = 0;
guint BitDepthY = 8;
guint BitDepthC = 8;
guint MbWidthC = 8;
guint MbHeightC = 8;
switch (base->rt_format) {
case VA_RT_FORMAT_YUV420:
BitDepthY = 8;
BitDepthC = 8;
MbWidthC = 8;
MbHeightC = 8;
break;
case VA_RT_FORMAT_YUV422:
BitDepthY = 8;
BitDepthC = 8;
MbWidthC = 8;
MbHeightC = 16;
break;
case VA_RT_FORMAT_YUV444:
BitDepthY = 8;
BitDepthC = 8;
MbWidthC = 16;
MbHeightC = 16;
break;
case VA_RT_FORMAT_YUV400:
BitDepthY = 8;
BitDepthC = 0;
MbWidthC = 0;
MbHeightC = 0;
break;
case VA_RT_FORMAT_YUV420_10:
BitDepthY = 10;
BitDepthC = 10;
MbWidthC = 8;
MbHeightC = 8;
case VA_RT_FORMAT_YUV422_10:
BitDepthY = 10;
BitDepthC = 10;
MbWidthC = 8;
MbHeightC = 16;
case VA_RT_FORMAT_YUV444_10:
BitDepthY = 10;
BitDepthC = 10;
MbWidthC = 16;
MbHeightC = 16;
break;
default:
g_assert_not_reached ();
break;
}
/* The variable RawMbBits is derived as
* RawMbBits = 256 * BitDepthY + 2 * MbWidthC * MbHeightC * BitDepthC */
RawMbBits = 256 * BitDepthY + 2 * MbWidthC * MbHeightC * BitDepthC;
codedbuf_size = (self->mb_width * self->mb_height) * (128 + RawMbBits) / 8;
} else {
/* The number of bits of macroblock_layer( ) data for any macroblock
* is not greater than 3200 */
codedbuf_size = (self->mb_width * self->mb_height) * (3200 / 8);
}
/* Account for SPS header */
/* XXX: exclude scaling lists, MVC/SVC extensions */
codedbuf_size += 4 /* start code */ + GST_ROUND_UP_8 (MAX_SPS_HDR_SIZE +
MAX_VUI_PARAMS_SIZE + 2 * MAX_HRD_PARAMS_SIZE) / 8;
/* Account for PPS header */
/* XXX: exclude slice groups, scaling lists, MVC/SVC extensions */
codedbuf_size += 4 + GST_ROUND_UP_8 (MAX_PPS_HDR_SIZE) / 8;
/* Account for slice header */
codedbuf_size +=
self->num_slices * (4 + GST_ROUND_UP_8 (MAX_SLICE_HDR_SIZE) / 8);
/* Add 5% for safety */
base->codedbuf_size = (guint) ((gfloat) codedbuf_size * 1.05);
GST_DEBUG_OBJECT (self, "Calculate codedbuf size: %u", base->codedbuf_size);
}
static guint
_get_rtformat (GstVaH264Enc * self, GstVideoFormat format)
{
guint chroma;
chroma = gst_va_chroma_from_video_format (format);
/* Check whether the rtformat is supported. */
if (chroma != VA_RT_FORMAT_YUV420) {
GST_ERROR_OBJECT (self, "Unsupported chroma for video format: %s",
gst_video_format_to_string (format));
return 0;
}
return chroma;
}
static gboolean
_init_packed_headers (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint32 packed_headers;
guint32 desired_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE /* SPS */
| VA_ENC_PACKED_HEADER_PICTURE /* PPS */
| VA_ENC_PACKED_HEADER_SLICE /* Slice headers */
| VA_ENC_PACKED_HEADER_RAW_DATA; /* SEI, AUD, etc. */
self->packed_headers = 0;
if (!gst_va_encoder_get_packed_headers (base->encoder, base->profile,
base->entrypoint, &packed_headers))
return FALSE;
if (desired_packed_headers & ~packed_headers) {
GST_INFO_OBJECT (self, "Driver does not support some wanted packed headers "
"(wanted %#x, found %#x)", desired_packed_headers, packed_headers);
}
self->packed_headers = desired_packed_headers & packed_headers;
return TRUE;
}
static gboolean
_decide_profile (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
gboolean ret = FALSE;
GstVideoFormat in_format;
VAProfile profile;
guint rt_format;
GstCaps *allowed_caps = NULL;
guint num_structures, i;
GstStructure *structure;
const GValue *v_profile;
GPtrArray *candidates = NULL;
gchar *profile_name;
candidates = g_ptr_array_new_with_free_func (g_free);
/* First, check whether the downstream requires a specified profile. */
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (base));
if (!allowed_caps)
allowed_caps = gst_pad_query_caps (GST_VIDEO_ENCODER_SRC_PAD (base), NULL);
if (allowed_caps && !gst_caps_is_empty (allowed_caps)) {
num_structures = gst_caps_get_size (allowed_caps);
for (i = 0; i < num_structures; i++) {
structure = gst_caps_get_structure (allowed_caps, i);
v_profile = gst_structure_get_value (structure, "profile");
if (!v_profile)
continue;
if (G_VALUE_HOLDS_STRING (v_profile)) {
profile_name = g_strdup (g_value_get_string (v_profile));
g_ptr_array_add (candidates, profile_name);
} else if (GST_VALUE_HOLDS_LIST (v_profile)) {
guint j;
for (j = 0; j < gst_value_list_get_size (v_profile); j++) {
const GValue *p = gst_value_list_get_value (v_profile, j);
if (!p)
continue;
profile_name = g_strdup (g_value_get_string (p));
g_ptr_array_add (candidates, profile_name);
}
}
}
}
if (candidates->len == 0) {
GST_ERROR_OBJECT (self, "No available profile in caps");
ret = FALSE;
goto out;
}
in_format = GST_VIDEO_INFO_FORMAT (&base->input_state->info);
rt_format = _get_rtformat (self, in_format);
if (!rt_format) {
GST_ERROR_OBJECT (self, "unsupported video format %s",
gst_video_format_to_string (in_format));
ret = FALSE;
goto out;
}
/* Find the suitable profile by features and check the HW
* support. */
ret = FALSE;
for (i = 0; i < candidates->len; i++) {
profile_name = g_ptr_array_index (candidates, i);
/* dct8x8 require at least high profile. */
if (self->use_dct8x8) {
if (!g_strstr_len (profile_name, -1, "high"))
continue;
}
/* cabac require at least main profile. */
if (self->use_cabac) {
if (!g_strstr_len (profile_name, -1, "main")
&& !g_strstr_len (profile_name, -1, "high"))
continue;
}
/* baseline only support I/P mode. */
if (self->gop.num_bframes > 0) {
if (g_strstr_len (profile_name, -1, "baseline"))
continue;
}
profile = gst_va_profile_from_name (H264, profile_name);
if (profile == VAProfileNone)
continue;
if (!gst_va_encoder_has_profile_and_entrypoint (base->encoder,
profile, base->entrypoint))
continue;
if ((rt_format & gst_va_encoder_get_rtformat (base->encoder,
profile, base->entrypoint)) == 0)
continue;
base->profile = profile;
base->rt_format = rt_format;
ret = TRUE;
goto out;
}
/* Just use the first HW available profile and disable features if
* needed. */
profile_name = NULL;
for (i = 0; i < candidates->len; i++) {
profile_name = g_ptr_array_index (candidates, i);
profile = gst_va_profile_from_name (H264, profile_name);
if (profile == VAProfileNone)
continue;
if (!gst_va_encoder_has_profile_and_entrypoint (base->encoder,
profile, base->entrypoint))
continue;
if ((rt_format & gst_va_encoder_get_rtformat (base->encoder,
profile, base->entrypoint)) == 0)
continue;
base->profile = profile;
base->rt_format = rt_format;
ret = TRUE;
}
if (ret == FALSE)
goto out;
if (self->use_dct8x8 && !g_strstr_len (profile_name, -1, "high")) {
GST_INFO_OBJECT (self, "Disable dct8x8, profile %s does not support it",
gst_va_profile_name (base->profile));
self->use_dct8x8 = FALSE;
update_property_bool (base, &self->prop.use_dct8x8, self->use_dct8x8,
PROP_DCT8X8);
}
if (self->use_cabac && (!g_strstr_len (profile_name, -1, "main")
&& !g_strstr_len (profile_name, -1, "high"))) {
GST_INFO_OBJECT (self, "Disable cabac, profile %s does not support it",
gst_va_profile_name (base->profile));
self->use_cabac = FALSE;
update_property_bool (base, &self->prop.use_cabac, self->use_cabac,
PROP_CABAC);
}
if (self->gop.num_bframes > 0 && g_strstr_len (profile_name, -1, "baseline")) {
GST_INFO_OBJECT (self, "No B frames, profile %s does not support it",
gst_va_profile_name (base->profile));
self->gop.num_bframes = 0;
self->gop.b_pyramid = 0;
}
out:
g_clear_pointer (&candidates, g_ptr_array_unref);
g_clear_pointer (&allowed_caps, gst_caps_unref);
if (ret) {
GST_INFO_OBJECT (self, "Select the profile %s",
gst_va_profile_name (profile));
} else {
GST_ERROR_OBJECT (self, "Failed to find an available profile");
}
return ret;
}
/* Clear all the info of last reconfig and set the fields based on
* property. The reconfig may change these fields because of the
* profile/level and HW limitation. */
static void
gst_va_h264_enc_reset_state (GstVaBaseEnc * base)
{
GstVaH264Enc *self = GST_VA_H264_ENC (base);
GST_VA_BASE_ENC_CLASS (parent_class)->reset_state (base);
GST_OBJECT_LOCK (self);
self->use_cabac = self->prop.use_cabac;
self->use_dct8x8 = self->prop.use_dct8x8;
self->use_trellis = self->prop.use_trellis;
self->aud = self->prop.aud;
self->num_slices = self->prop.num_slices;
self->gop.idr_period = self->prop.key_int_max;
self->gop.num_bframes = self->prop.num_bframes;
self->gop.b_pyramid = self->prop.b_pyramid;
self->gop.num_iframes = self->prop.num_iframes;
self->gop.num_ref_frames = self->prop.num_ref_frames;
self->rc.rc_ctrl_mode = self->prop.rc_ctrl;
self->rc.min_qp = self->prop.min_qp;
self->rc.max_qp = self->prop.max_qp;
self->rc.qp_i = self->prop.qp_i;
self->rc.qp_p = self->prop.qp_p;
self->rc.qp_b = self->prop.qp_b;
self->rc.mbbrc = self->prop.mbbrc;
self->rc.target_percentage = self->prop.target_percentage;
self->rc.target_usage = self->prop.target_usage;
self->rc.cpb_size = self->prop.cpb_size;
GST_OBJECT_UNLOCK (self);
self->level_idc = 0;
self->level_str = NULL;
self->mb_width = 0;
self->mb_height = 0;
self->gop.i_period = 0;
self->gop.total_idr_count = 0;
self->gop.ip_period = 0;
self->gop.highest_pyramid_level = 0;
memset (self->gop.frame_types, 0, sizeof (self->gop.frame_types));
self->gop.cur_frame_index = 0;
self->gop.cur_frame_num = 0;
self->gop.max_frame_num = 0;
self->gop.log2_max_frame_num = 0;
self->gop.max_pic_order_cnt = 0;
self->gop.log2_max_pic_order_cnt = 0;
self->gop.ref_num_list0 = 0;
self->gop.ref_num_list1 = 0;
self->gop.num_reorder_frames = 0;
self->rc.max_bitrate = 0;
self->rc.target_bitrate = 0;
self->rc.max_bitrate_bits = 0;
self->rc.target_bitrate_bits = 0;
self->rc.cpb_length_bits = 0;
memset (&self->sequence_hdr, 0, sizeof (GstH264SPS));
}
static gboolean
gst_va_h264_enc_reconfig (GstVaBaseEnc * base)
{
GstVideoEncoder *venc = GST_VIDEO_ENCODER (base);
GstVaH264Enc *self = GST_VA_H264_ENC (base);
GstCaps *out_caps;
guint max_ref_frames;
GstVideoCodecState *output_state;
gst_va_base_enc_reset_state (base);
base->width = GST_VIDEO_INFO_WIDTH (&base->input_state->info);
base->height = GST_VIDEO_INFO_HEIGHT (&base->input_state->info);
self->mb_width = GST_ROUND_UP_16 (base->width) / 16;
self->mb_height = GST_ROUND_UP_16 (base->height) / 16;
/* Frame rate is needed for rate control and PTS setting. */
if (GST_VIDEO_INFO_FPS_N (&base->input_state->info) == 0
|| GST_VIDEO_INFO_FPS_D (&base->input_state->info) == 0) {
GST_INFO_OBJECT (self, "Unknown framerate, just set to 30 fps");
GST_VIDEO_INFO_FPS_N (&base->input_state->info) = 30;
GST_VIDEO_INFO_FPS_D (&base->input_state->info) = 1;
}
base->frame_duration = gst_util_uint64_scale (GST_SECOND,
GST_VIDEO_INFO_FPS_D (&base->input_state->info),
GST_VIDEO_INFO_FPS_N (&base->input_state->info));
GST_DEBUG_OBJECT (self, "resolution:%dx%d, MB size: %dx%d,"
" frame duration is %" GST_TIME_FORMAT,
base->width, base->height, self->mb_width, self->mb_height,
GST_TIME_ARGS (base->frame_duration));
if (!_decide_profile (self))
return FALSE;
_validate_parameters (self);
_ensure_rate_control (self);
if (!_calculate_level (self))
return FALSE;
_generate_gop_structure (self);
_calculate_coded_size (self);
/* updates & notifications */
/* num_bframes are modified several times before */
update_property_uint (base, &self->prop.num_bframes, self->gop.num_bframes,
PROP_BFRAMES);
update_property_bool (base, &self->prop.b_pyramid, self->gop.b_pyramid,
PROP_B_PYRAMID);
if (!_init_packed_headers (self))
return FALSE;
self->aud = self->aud && self->packed_headers & VA_ENC_PACKED_HEADER_RAW_DATA;
update_property_bool (base, &self->prop.aud, self->aud, PROP_AUD);
max_ref_frames = self->gop.num_ref_frames + 3 /* scratch frames */ ;
if (!gst_va_encoder_open (base->encoder, base->profile, base->entrypoint,
GST_VIDEO_INFO_FORMAT (&base->input_state->info), base->rt_format,
GST_ROUND_UP_16 (base->width), GST_ROUND_UP_16 (base->height),
base->codedbuf_size, max_ref_frames, self->rc.rc_ctrl_mode,
self->packed_headers)) {
GST_ERROR_OBJECT (self, "Failed to open the VA encoder.");
return FALSE;
}
/* Add some tags */
gst_va_base_enc_add_codec_tag (base, "H264");
out_caps = gst_va_profile_caps (base->profile);
g_assert (out_caps);
out_caps = gst_caps_fixate (out_caps);
if (self->level_str)
gst_caps_set_simple (out_caps, "level", G_TYPE_STRING, self->level_str,
NULL);
gst_caps_set_simple (out_caps, "width", G_TYPE_INT, base->width,
"height", G_TYPE_INT, base->height, "alignment", G_TYPE_STRING, "au",
"stream-format", G_TYPE_STRING, "byte-stream", NULL);
GST_DEBUG_OBJECT (self, "output caps is %" GST_PTR_FORMAT, out_caps);
output_state =
gst_video_encoder_set_output_state (venc, out_caps, base->input_state);
gst_video_codec_state_unref (output_state);
if (!gst_video_encoder_negotiate (venc)) {
GST_ERROR_OBJECT (self, "Failed to negotiate with the downstream");
return FALSE;
}
return TRUE;
}
static gboolean
_push_one_frame (GstVaBaseEnc * base, GstVideoCodecFrame * gst_frame,
gboolean last)
{
GstVaH264Enc *self = GST_VA_H264_ENC (base);
GstVaH264EncFrame *frame;
g_return_val_if_fail (self->gop.cur_frame_index <= self->gop.idr_period,
FALSE);
if (gst_frame) {
/* Begin a new GOP, should have a empty reorder_list. */
if (self->gop.cur_frame_index == self->gop.idr_period) {
g_assert (g_queue_is_empty (&base->reorder_list));
self->gop.cur_frame_index = 0;
self->gop.cur_frame_num = 0;
}
frame = _enc_frame (gst_frame);
frame->poc =
((self->gop.cur_frame_index * 2) % self->gop.max_pic_order_cnt);
/* TODO: move most this logic onto vabaseenc class */
if (self->gop.cur_frame_index == 0) {
g_assert (frame->poc == 0);
GST_LOG_OBJECT (self, "system_frame_number: %d, an IDR frame, starts"
" a new GOP", gst_frame->system_frame_number);
g_queue_clear_full (&base->ref_list,
(GDestroyNotify) gst_video_codec_frame_unref);
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (gst_frame);
}
frame->type = self->gop.frame_types[self->gop.cur_frame_index].slice_type;
frame->is_ref = self->gop.frame_types[self->gop.cur_frame_index].is_ref;
frame->pyramid_level =
self->gop.frame_types[self->gop.cur_frame_index].pyramid_level;
frame->left_ref_poc_diff =
self->gop.frame_types[self->gop.cur_frame_index].left_ref_poc_diff;
frame->right_ref_poc_diff =
self->gop.frame_types[self->gop.cur_frame_index].right_ref_poc_diff;
if (GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME (gst_frame)) {
GST_DEBUG_OBJECT (self, "system_frame_number: %d, a force key frame,"
" promote its type from %s to %s", gst_frame->system_frame_number,
_slice_type_name (frame->type), _slice_type_name (GST_H264_I_SLICE));
frame->type = GST_H264_I_SLICE;
frame->is_ref = TRUE;
}
GST_LOG_OBJECT (self, "Push frame, system_frame_number: %d, poc %d, "
"frame type %s", gst_frame->system_frame_number, frame->poc,
_slice_type_name (frame->type));
self->gop.cur_frame_index++;
g_queue_push_tail (&base->reorder_list,
gst_video_codec_frame_ref (gst_frame));
}
/* ensure the last one a non-B and end the GOP. */
if (last && self->gop.cur_frame_index < self->gop.idr_period) {
GstVideoCodecFrame *last_frame;
/* Ensure next push will start a new GOP. */
self->gop.cur_frame_index = self->gop.idr_period;
if (!g_queue_is_empty (&base->reorder_list)) {
last_frame = g_queue_peek_tail (&base->reorder_list);
frame = _enc_frame (last_frame);
if (frame->type == GST_H264_B_SLICE) {
frame->type = GST_H264_P_SLICE;
frame->is_ref = TRUE;
}
}
}
return TRUE;
}
struct RefFramesCount
{
gint poc;
guint num;
};
static void
_count_backward_ref_num (gpointer data, gpointer user_data)
{
GstVaH264EncFrame *frame = _enc_frame (data);
struct RefFramesCount *count = (struct RefFramesCount *) user_data;
g_assert (frame->poc != count->poc);
if (frame->poc > count->poc)
count->num++;
}
static GstVideoCodecFrame *
_pop_pyramid_b_frame (GstVaH264Enc * self)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint i;
gint index = -1;
GstVaH264EncFrame *b_vaframe;
GstVideoCodecFrame *b_frame;
struct RefFramesCount count;
g_assert (self->gop.ref_num_list1 == 1);
b_frame = NULL;
b_vaframe = NULL;
/* Find the lowest level with smallest poc. */
for (i = 0; i < g_queue_get_length (&base->reorder_list); i++) {
GstVaH264EncFrame *vaf;
GstVideoCodecFrame *f;
f = g_queue_peek_nth (&base->reorder_list, i);
if (!b_frame) {
b_frame = f;
b_vaframe = _enc_frame (b_frame);
index = i;
continue;
}
vaf = _enc_frame (f);
if (b_vaframe->pyramid_level < vaf->pyramid_level) {
b_frame = f;
b_vaframe = vaf;
index = i;
continue;
}
if (b_vaframe->poc > vaf->poc) {
b_frame = f;
b_vaframe = vaf;
index = i;
}
}
again:
/* Check whether its refs are already poped. */
g_assert (b_vaframe->left_ref_poc_diff != 0);
g_assert (b_vaframe->right_ref_poc_diff != 0);
for (i = 0; i < g_queue_get_length (&base->reorder_list); i++) {
GstVaH264EncFrame *vaf;
GstVideoCodecFrame *f;
f = g_queue_peek_nth (&base->reorder_list, i);
if (f == b_frame)
continue;
vaf = _enc_frame (f);
if (vaf->poc == b_vaframe->poc + b_vaframe->left_ref_poc_diff
|| vaf->poc == b_vaframe->poc + b_vaframe->right_ref_poc_diff) {
b_frame = f;
b_vaframe = vaf;
index = i;
goto again;
}
}
/* Ensure we already have enough backward refs */
count.num = 0;
count.poc = b_vaframe->poc;
g_queue_foreach (&base->ref_list, (GFunc) _count_backward_ref_num, &count);
if (count.num >= self->gop.ref_num_list1) {
GstVideoCodecFrame *f;
/* it will unref at pop_frame */
f = g_queue_pop_nth (&base->reorder_list, index);
g_assert (f == b_frame);
} else {
b_frame = NULL;
}
return b_frame;
}
static gboolean
_pop_one_frame (GstVaBaseEnc * base, GstVideoCodecFrame ** out_frame)
{
GstVaH264Enc *self = GST_VA_H264_ENC (base);
GstVaH264EncFrame *vaframe;
GstVideoCodecFrame *frame;
struct RefFramesCount count;
g_return_val_if_fail (self->gop.cur_frame_index <= self->gop.idr_period,
FALSE);
*out_frame = NULL;
if (g_queue_is_empty (&base->reorder_list))
return TRUE;
/* Return the last pushed non-B immediately. */
frame = g_queue_peek_tail (&base->reorder_list);
vaframe = _enc_frame (frame);
if (vaframe->type != GST_H264_B_SLICE) {
frame = g_queue_pop_tail (&base->reorder_list);
goto get_one;
}
if (self->gop.b_pyramid) {
frame = _pop_pyramid_b_frame (self);
if (frame == NULL)
return TRUE;
goto get_one;
}
g_assert (self->gop.ref_num_list1 > 0);
/* If GOP end, pop anyway. */
if (self->gop.cur_frame_index == self->gop.idr_period) {
frame = g_queue_pop_head (&base->reorder_list);
goto get_one;
}
/* Ensure we already have enough backward refs */
frame = g_queue_peek_head (&base->reorder_list);
vaframe = _enc_frame (frame);
count.num = 0;
count.poc = vaframe->poc;
g_queue_foreach (&base->ref_list, _count_backward_ref_num, &count);
if (count.num >= self->gop.ref_num_list1) {
frame = g_queue_pop_head (&base->reorder_list);
goto get_one;
}
return TRUE;
get_one:
g_assert (self->gop.cur_frame_num < self->gop.max_frame_num);
vaframe = _enc_frame (frame);
vaframe->frame_num = self->gop.cur_frame_num;
/* Add the frame number for ref frames. */
if (vaframe->is_ref)
self->gop.cur_frame_num++;
if (vaframe->frame_num == 0)
self->gop.total_idr_count++;
if (self->gop.b_pyramid && vaframe->type == GST_H264_B_SLICE) {
GST_LOG_OBJECT (self, "pop a pyramid B frame with system_frame_number:"
" %d, poc: %d, frame num: %d, is_ref: %s, level %d",
frame->system_frame_number, vaframe->poc, vaframe->frame_num,
vaframe->is_ref ? "true" : "false", vaframe->pyramid_level);
} else {
GST_LOG_OBJECT (self, "pop a frame with system_frame_number: %d,"
" frame type: %s, poc: %d, frame num: %d, is_ref: %s",
frame->system_frame_number, _slice_type_name (vaframe->type),
vaframe->poc, vaframe->frame_num, vaframe->is_ref ? "true" : "false");
}
/* unref frame popped from queue or pyramid b_frame */
gst_video_codec_frame_unref (frame);
*out_frame = frame;
return TRUE;
}
static gboolean
gst_va_h264_enc_reorder_frame (GstVaBaseEnc * base, GstVideoCodecFrame * frame,
gboolean bump_all, GstVideoCodecFrame ** out_frame)
{
if (!_push_one_frame (base, frame, bump_all)) {
GST_ERROR_OBJECT (base, "Failed to push the input frame"
" system_frame_number: %d into the reorder list",
frame->system_frame_number);
*out_frame = NULL;
return FALSE;
}
if (!_pop_one_frame (base, out_frame)) {
GST_ERROR_OBJECT (base, "Failed to pop the frame from the reorder list");
*out_frame = NULL;
return FALSE;
}
return TRUE;
}
static inline gboolean
_fill_sps (GstVaH264Enc * self, VAEncSequenceParameterBufferH264 * seq_param)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
GstH264Profile profile;
guint32 constraint_set0_flag, constraint_set1_flag;
guint32 constraint_set2_flag, constraint_set3_flag;
guint32 max_dec_frame_buffering;
/* let max_num_ref_frames <= MaxDpbFrames. */
max_dec_frame_buffering =
MIN (self->gop.num_ref_frames + 1 /* Last frame before bump */ ,
16 /* DPB_MAX_SIZE */ );
constraint_set0_flag = 0;
constraint_set1_flag = 0;
constraint_set2_flag = 0;
constraint_set3_flag = 0;
switch (base->profile) {
case VAProfileH264ConstrainedBaseline:
profile = GST_H264_PROFILE_BASELINE;
/* A.2.1 (baseline profile constraints) */
constraint_set0_flag = 1;
constraint_set1_flag = 1;
break;
case VAProfileH264Main:
profile = GST_H264_PROFILE_MAIN;
/* A.2.2 (main profile constraints) */
constraint_set1_flag = 1;
break;
case VAProfileH264High:
case VAProfileH264MultiviewHigh:
case VAProfileH264StereoHigh:
profile = GST_H264_PROFILE_HIGH;
break;
default:
return FALSE;
}
/* seq_scaling_matrix_present_flag not supported now */
g_assert (seq_param->seq_fields.bits.seq_scaling_matrix_present_flag == 0);
/* pic_order_cnt_type only support 0 now */
g_assert (seq_param->seq_fields.bits.pic_order_cnt_type == 0);
/* only progressive frames encoding is supported now */
g_assert (seq_param->seq_fields.bits.frame_mbs_only_flag);
/* *INDENT-OFF* */
GST_DEBUG_OBJECT (self, "filling SPS");
self->sequence_hdr = (GstH264SPS) {
.id = 0,
.profile_idc = profile,
.constraint_set0_flag = constraint_set0_flag,
.constraint_set1_flag = constraint_set1_flag,
.constraint_set2_flag = constraint_set2_flag,
.constraint_set3_flag = constraint_set3_flag,
.level_idc = self->level_idc,
.chroma_format_idc = seq_param->seq_fields.bits.chroma_format_idc,
.bit_depth_luma_minus8 = seq_param->bit_depth_luma_minus8,
.bit_depth_chroma_minus8 = seq_param->bit_depth_chroma_minus8,
.log2_max_frame_num_minus4 =
seq_param->seq_fields.bits.log2_max_frame_num_minus4,
.pic_order_cnt_type = seq_param->seq_fields.bits.pic_order_cnt_type,
.log2_max_pic_order_cnt_lsb_minus4 =
seq_param->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4,
.num_ref_frames = seq_param->max_num_ref_frames,
.gaps_in_frame_num_value_allowed_flag = 0,
.pic_width_in_mbs_minus1 = seq_param->picture_width_in_mbs - 1,
.pic_height_in_map_units_minus1 =
(seq_param->seq_fields.bits.frame_mbs_only_flag ?
seq_param->picture_height_in_mbs - 1 :
seq_param->picture_height_in_mbs / 2 - 1),
.frame_mbs_only_flag = seq_param->seq_fields.bits.frame_mbs_only_flag,
.mb_adaptive_frame_field_flag = 0,
.direct_8x8_inference_flag =
seq_param->seq_fields.bits.direct_8x8_inference_flag,
.frame_cropping_flag = seq_param->frame_cropping_flag,
.frame_crop_left_offset = seq_param->frame_crop_left_offset,
.frame_crop_right_offset = seq_param->frame_crop_right_offset,
.frame_crop_top_offset = seq_param->frame_crop_top_offset,
.frame_crop_bottom_offset = seq_param->frame_crop_bottom_offset,
.vui_parameters_present_flag = seq_param->vui_parameters_present_flag,
.vui_parameters = {
.aspect_ratio_info_present_flag =
seq_param->vui_fields.bits.aspect_ratio_info_present_flag,
.aspect_ratio_idc = seq_param->aspect_ratio_idc,
.sar_width = seq_param->sar_width,
.sar_height = seq_param->sar_height,
.overscan_info_present_flag = 0,
.overscan_appropriate_flag = 0,
.chroma_loc_info_present_flag = 0,
.timing_info_present_flag =
seq_param->vui_fields.bits.timing_info_present_flag,
.num_units_in_tick = seq_param->num_units_in_tick,
.time_scale = seq_param->time_scale,
.fixed_frame_rate_flag = seq_param->vui_fields.bits.fixed_frame_rate_flag,
/* We do not write hrd and no need for buffering period SEI. */
.nal_hrd_parameters_present_flag = 0,
.vcl_hrd_parameters_present_flag = 0,
.low_delay_hrd_flag = seq_param->vui_fields.bits.low_delay_hrd_flag,
.pic_struct_present_flag = 1,
.bitstream_restriction_flag =
seq_param->vui_fields.bits.bitstream_restriction_flag,
.motion_vectors_over_pic_boundaries_flag =
seq_param->vui_fields.bits.motion_vectors_over_pic_boundaries_flag,
.max_bytes_per_pic_denom = 2,
.max_bits_per_mb_denom = 1,
.log2_max_mv_length_horizontal =
seq_param->vui_fields.bits.log2_max_mv_length_horizontal,
.log2_max_mv_length_vertical =
seq_param->vui_fields.bits.log2_max_mv_length_vertical,
.num_reorder_frames = self->gop.num_reorder_frames,
.max_dec_frame_buffering = max_dec_frame_buffering,
},
};
/* *INDENT-ON* */
return TRUE;
}
static gboolean
_add_sequence_header (GstVaH264Enc * self, GstVaH264EncFrame * frame)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
gsize size;
#define SPS_SIZE 4 + GST_ROUND_UP_8 (MAX_SPS_HDR_SIZE + MAX_VUI_PARAMS_SIZE + \
2 * MAX_HRD_PARAMS_SIZE) / 8
guint8 packed_sps[SPS_SIZE] = { 0, };
#undef SPS_SIZE
size = sizeof (packed_sps);
if (gst_h264_bit_writer_sps (&self->sequence_hdr, TRUE, packed_sps,
&size) != GST_H264_BIT_WRITER_OK) {
GST_ERROR_OBJECT (self, "Failed to generate the sequence header");
return FALSE;
}
if (!gst_va_encoder_add_packed_header (base->encoder, frame->picture,
VAEncPackedHeaderSequence, packed_sps, size, FALSE)) {
GST_ERROR_OBJECT (self, "Failed to add the packed sequence header");
return FALSE;
}
return TRUE;
}
static inline void
_fill_sequence_param (GstVaH264Enc * self,
VAEncSequenceParameterBufferH264 * sequence)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
gboolean direct_8x8_inference_flag = TRUE;
g_assert (self->gop.log2_max_frame_num >= 4);
g_assert (self->gop.log2_max_pic_order_cnt >= 4);
/* A.2.3 Extended profile:
* Sequence parameter sets shall have direct_8x8_inference_flag
* equal to 1.
*
* A.3.3 Profile-specific level limits:
* direct_8x8_inference_flag is not relevant to the Baseline,
* Constrained Baseline, Constrained High, High 10 Intra, High 4:2:2
* Intra, High 4:4:4 Intra, and CAVLC 4:4:4 Intra profiles as these
* profiles do not allow B slice types, and
* direct_8x8_inference_flag is equal to 1 for all levels of the
* Extended profile. Table A-4. We only have constrained baseline
* here. */
if (base->profile == VAProfileH264ConstrainedBaseline)
direct_8x8_inference_flag = FALSE;
/* *INDENT-OFF* */
*sequence = (VAEncSequenceParameterBufferH264) {
.seq_parameter_set_id = 0,
.level_idc = self->level_idc,
.intra_period =
self->gop.i_period > 0 ? self->gop.i_period : self->gop.idr_period,
.intra_idr_period = self->gop.idr_period,
.ip_period = self->gop.ip_period,
.bits_per_second = self->rc.target_bitrate_bits,
.max_num_ref_frames = self->gop.num_ref_frames,
.picture_width_in_mbs = self->mb_width,
.picture_height_in_mbs = self->mb_height,
.seq_fields.bits = {
/* Only support 4:2:0 now. */
.chroma_format_idc = 1,
.frame_mbs_only_flag = 1,
.mb_adaptive_frame_field_flag = FALSE,
.seq_scaling_matrix_present_flag = FALSE,
.direct_8x8_inference_flag = direct_8x8_inference_flag,
.log2_max_frame_num_minus4 = self->gop.log2_max_frame_num - 4,
.pic_order_cnt_type = 0,
.log2_max_pic_order_cnt_lsb_minus4 = self->gop.log2_max_pic_order_cnt - 4,
},
.bit_depth_luma_minus8 = 0,
.bit_depth_chroma_minus8 = 0,
.vui_parameters_present_flag = TRUE,
.vui_fields.bits = {
.aspect_ratio_info_present_flag = TRUE,
.timing_info_present_flag = TRUE,
.bitstream_restriction_flag = TRUE,
.log2_max_mv_length_horizontal = 15,
.log2_max_mv_length_vertical = 15,
.fixed_frame_rate_flag = 1,
.low_delay_hrd_flag = 0,
.motion_vectors_over_pic_boundaries_flag = TRUE,
},
.aspect_ratio_idc = 0xff,
/* FIXME: what if no framerate info is provided */
.sar_width = GST_VIDEO_INFO_PAR_N (&base->input_state->info),
.sar_height = GST_VIDEO_INFO_PAR_D (&base->input_state->info),
.num_units_in_tick = GST_VIDEO_INFO_FPS_D (&base->input_state->info),
.time_scale = GST_VIDEO_INFO_FPS_N (&base->input_state->info) * 2,
};
/* *INDENT-ON* */
/* frame_cropping_flag */
if (base->width & 15 || base->height & 15) {
static const guint SubWidthC[] = { 1, 2, 2, 1 };
static const guint SubHeightC[] = { 1, 2, 1, 1 };
const guint CropUnitX =
SubWidthC[sequence->seq_fields.bits.chroma_format_idc];
const guint CropUnitY =
SubHeightC[sequence->seq_fields.bits.chroma_format_idc] *
(2 - sequence->seq_fields.bits.frame_mbs_only_flag);
sequence->frame_cropping_flag = 1;
sequence->frame_crop_left_offset = 0;
sequence->frame_crop_right_offset = (16 * self->mb_width -
base->width) / CropUnitX;
sequence->frame_crop_top_offset = 0;
sequence->frame_crop_bottom_offset = (16 * self->mb_height -
base->height) / CropUnitY;
}
}
static gboolean
_add_sequence_parameter (GstVaH264Enc * self, GstVaEncodePicture * picture,
VAEncSequenceParameterBufferH264 * sequence)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
if (!gst_va_encoder_add_param (base->encoder, picture,
VAEncSequenceParameterBufferType, sequence, sizeof (*sequence))) {
GST_ERROR_OBJECT (self, "Failed to create the sequence parameter");
return FALSE;
}
return TRUE;
}
static inline gboolean
_fill_picture_parameter (GstVaH264Enc * self, GstVaH264EncFrame * frame,
VAEncPictureParameterBufferH264 * pic_param)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint i;
/* *INDENT-OFF* */
*pic_param = (VAEncPictureParameterBufferH264) {
.CurrPic = {
.picture_id =
gst_va_encode_picture_get_reconstruct_surface (frame->picture),
.TopFieldOrderCnt = frame->poc,
},
.coded_buf = frame->picture->coded_buffer,
/* Only support one sps and pps now. */
.pic_parameter_set_id = 0,
.seq_parameter_set_id = 0,
/* means last encoding picture, EOS nal added. */
.last_picture = frame->last_frame,
.frame_num = frame->frame_num,
.pic_init_qp = self->rc.qp_i,
/* Use slice's these fields to control ref num. */
.num_ref_idx_l0_active_minus1 = 0,
.num_ref_idx_l1_active_minus1 = 0,
.chroma_qp_index_offset = 0,
.second_chroma_qp_index_offset = 0,
/* picture fields */
.pic_fields.bits.idr_pic_flag = (frame->frame_num == 0),
.pic_fields.bits.reference_pic_flag = frame->is_ref,
.pic_fields.bits.entropy_coding_mode_flag = self->use_cabac,
.pic_fields.bits.weighted_pred_flag = 0,
.pic_fields.bits.weighted_bipred_idc = 0,
.pic_fields.bits.constrained_intra_pred_flag = 0,
.pic_fields.bits.transform_8x8_mode_flag = self->use_dct8x8,
/* enable debloking */
.pic_fields.bits.deblocking_filter_control_present_flag = 1,
.pic_fields.bits.redundant_pic_cnt_present_flag = 0,
/* bottom_field_pic_order_in_frame_present_flag */
.pic_fields.bits.pic_order_present_flag = 0,
.pic_fields.bits.pic_scaling_matrix_present_flag = 0,
};
/* *INDENT-ON* */
/* Non I frame, construct reference list. */
i = 0;
if (frame->type != GST_H264_I_SLICE) {
GstVaH264EncFrame *f;
if (g_queue_is_empty (&base->ref_list)) {
GST_ERROR_OBJECT (self, "No reference found for frame type %s",
_slice_type_name (frame->type));
return FALSE;
}
g_assert (g_queue_get_length (&base->ref_list) <= self->gop.num_ref_frames);
/* ref frames in queue are already sorted by frame_num. */
for (; i < g_queue_get_length (&base->ref_list); i++) {
f = _enc_frame (g_queue_peek_nth (&base->ref_list, i));
pic_param->ReferenceFrames[i].picture_id =
gst_va_encode_picture_get_reconstruct_surface (f->picture);
pic_param->ReferenceFrames[i].TopFieldOrderCnt = f->poc;
pic_param->ReferenceFrames[i].flags =
VA_PICTURE_H264_SHORT_TERM_REFERENCE;
pic_param->ReferenceFrames[i].frame_idx = f->frame_num;
}
}
for (; i < 16; ++i)
pic_param->ReferenceFrames[i].picture_id = VA_INVALID_ID;
return TRUE;
};
static gboolean
_add_picture_parameter (GstVaH264Enc * self, GstVaH264EncFrame * frame,
VAEncPictureParameterBufferH264 * pic_param)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
if (!gst_va_encoder_add_param (base->encoder, frame->picture,
VAEncPictureParameterBufferType, pic_param,
sizeof (VAEncPictureParameterBufferH264))) {
GST_ERROR_OBJECT (self, "Failed to create the picture parameter");
return FALSE;
}
return TRUE;
}
static void
_fill_pps (VAEncPictureParameterBufferH264 * pic_param, GstH264SPS * sps,
GstH264PPS * pps)
{
/* *INDENT-OFF* */
*pps = (GstH264PPS) {
.id = 0,
.sequence = sps,
.entropy_coding_mode_flag =
pic_param->pic_fields.bits.entropy_coding_mode_flag,
.pic_order_present_flag =
pic_param->pic_fields.bits.pic_order_present_flag,
.num_slice_groups_minus1 = 0,
.num_ref_idx_l0_active_minus1 = pic_param->num_ref_idx_l0_active_minus1,
.num_ref_idx_l1_active_minus1 = pic_param->num_ref_idx_l1_active_minus1,
.weighted_pred_flag = pic_param->pic_fields.bits.weighted_pred_flag,
.weighted_bipred_idc = pic_param->pic_fields.bits.weighted_bipred_idc,
.pic_init_qp_minus26 = pic_param->pic_init_qp - 26,
.pic_init_qs_minus26 = 0,
.chroma_qp_index_offset = pic_param->chroma_qp_index_offset,
.deblocking_filter_control_present_flag =
pic_param->pic_fields.bits.deblocking_filter_control_present_flag,
.constrained_intra_pred_flag =
pic_param->pic_fields.bits.constrained_intra_pred_flag,
.redundant_pic_cnt_present_flag =
pic_param->pic_fields.bits.redundant_pic_cnt_present_flag,
.transform_8x8_mode_flag =
pic_param->pic_fields.bits.transform_8x8_mode_flag,
/* unsupport scaling lists */
.pic_scaling_matrix_present_flag = 0,
.second_chroma_qp_index_offset = pic_param->second_chroma_qp_index_offset,
};
/* *INDENT-ON* */
}
static gboolean
_add_picture_header (GstVaH264Enc * self, GstVaH264EncFrame * frame,
GstH264PPS * pps)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
#define PPS_SIZE 4 + GST_ROUND_UP_8 (MAX_PPS_HDR_SIZE) / 8
guint8 packed_pps[PPS_SIZE] = { 0, };
#undef PPS_SIZE
gsize size;
size = sizeof (packed_pps);
if (gst_h264_bit_writer_pps (pps, TRUE, packed_pps,
&size) != GST_H264_BIT_WRITER_OK) {
GST_ERROR_OBJECT (self, "Failed to generate the picture header");
return FALSE;
}
if (!gst_va_encoder_add_packed_header (base->encoder, frame->picture,
VAEncPackedHeaderPicture, packed_pps, size, FALSE)) {
GST_ERROR_OBJECT (self, "Failed to add the packed picture header");
return FALSE;
}
return TRUE;
}
static gboolean
_add_one_slice (GstVaH264Enc * self, GstVaH264EncFrame * frame,
gint start_mb, gint mb_size,
VAEncSliceParameterBufferH264 * slice,
GstVaH264EncFrame * list0[16], guint list0_num,
GstVaH264EncFrame * list1[16], guint list1_num)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
int8_t slice_qp_delta = 0;
gint i;
/* *INDENT-OFF* */
if (self->rc.rc_ctrl_mode == VA_RC_CQP) {
if (frame->type == GST_H264_P_SLICE) {
slice_qp_delta = self->rc.qp_p - self->rc.qp_i;
} else if (frame->type == GST_H264_B_SLICE) {
slice_qp_delta = (int8_t) (self->rc.qp_b - self->rc.qp_i);
}
g_assert (slice_qp_delta <= 51 && slice_qp_delta >= -51);
}
*slice = (VAEncSliceParameterBufferH264) {
.macroblock_address = start_mb,
.num_macroblocks = mb_size,
.macroblock_info = VA_INVALID_ID,
.slice_type = (uint8_t) frame->type,
/* Only one parameter set supported now. */
.pic_parameter_set_id = 0,
.idr_pic_id = self->gop.total_idr_count,
.pic_order_cnt_lsb = frame->poc,
/* Not support top/bottom. */
.delta_pic_order_cnt_bottom = 0,
.delta_pic_order_cnt[0] = 0,
.delta_pic_order_cnt[1] = 0,
.direct_spatial_mv_pred_flag = TRUE,
/* .num_ref_idx_active_override_flag = , */
/* .num_ref_idx_l0_active_minus1 = , */
/* .num_ref_idx_l1_active_minus1 = , */
/* Set the reference list later. */
.luma_log2_weight_denom = 0,
.chroma_log2_weight_denom = 0,
.luma_weight_l0_flag = 0,
.chroma_weight_l0_flag = 0,
.luma_weight_l1_flag = 0,
.chroma_weight_l1_flag = 0,
.cabac_init_idc = 0,
/* Just use picture default setting. */
.slice_qp_delta = slice_qp_delta,
.disable_deblocking_filter_idc = 0,
.slice_alpha_c0_offset_div2 = 2,
.slice_beta_offset_div2 = 2,
};
/* *INDENT-ON* */
if (frame->type == GST_H264_B_SLICE || frame->type == GST_H264_P_SLICE) {
slice->num_ref_idx_active_override_flag = (list0_num > 0 || list1_num > 0);
slice->num_ref_idx_l0_active_minus1 = list0_num > 0 ? list0_num - 1 : 0;
if (frame->type == GST_H264_B_SLICE)
slice->num_ref_idx_l1_active_minus1 = list1_num > 0 ? list1_num - 1 : 0;
}
i = 0;
if (frame->type != GST_H264_I_SLICE) {
for (; i < list0_num; i++) {
slice->RefPicList0[i].picture_id =
gst_va_encode_picture_get_reconstruct_surface (list0[i]->picture);
slice->RefPicList0[i].TopFieldOrderCnt = list0[i]->poc;
slice->RefPicList0[i].flags |= VA_PICTURE_H264_SHORT_TERM_REFERENCE;
slice->RefPicList0[i].frame_idx = list0[i]->frame_num;
}
}
for (; i < G_N_ELEMENTS (slice->RefPicList0); ++i) {
slice->RefPicList0[i].picture_id = VA_INVALID_SURFACE;
slice->RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
}
i = 0;
if (frame->type == GST_H264_B_SLICE) {
for (; i < list1_num; i++) {
slice->RefPicList1[i].picture_id =
gst_va_encode_picture_get_reconstruct_surface (list1[i]->picture);
slice->RefPicList1[i].TopFieldOrderCnt = list1[i]->poc;
slice->RefPicList1[i].flags |= VA_PICTURE_H264_SHORT_TERM_REFERENCE;
slice->RefPicList1[i].frame_idx = list1[i]->frame_num;
}
}
for (; i < G_N_ELEMENTS (slice->RefPicList1); ++i) {
slice->RefPicList1[i].picture_id = VA_INVALID_SURFACE;
slice->RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
}
if (!gst_va_encoder_add_param (base->encoder, frame->picture,
VAEncSliceParameterBufferType, slice,
sizeof (VAEncSliceParameterBufferH264))) {
GST_ERROR_OBJECT (self, "Failed to create the slice parameter");
return FALSE;
}
return TRUE;
}
static gint
_poc_asc_compare (const GstVaH264EncFrame ** a, const GstVaH264EncFrame ** b)
{
return (*a)->poc - (*b)->poc;
}
static gint
_poc_des_compare (const GstVaH264EncFrame ** a, const GstVaH264EncFrame ** b)
{
return (*b)->poc - (*a)->poc;
}
static gint
_frame_num_asc_compare (const GstVaH264EncFrame ** a,
const GstVaH264EncFrame ** b)
{
return (*a)->frame_num - (*b)->frame_num;
}
static gint
_frame_num_des_compare (const GstVaH264EncFrame ** a,
const GstVaH264EncFrame ** b)
{
return (*b)->frame_num - (*a)->frame_num;
}
/* If all the pic_num in the same order, OK. */
static gboolean
_ref_list_need_reorder (GstVaH264EncFrame * list[16], guint list_num,
gboolean is_asc)
{
guint i;
gint pic_num_diff;
if (list_num <= 1)
return FALSE;
for (i = 1; i < list_num; i++) {
pic_num_diff = list[i]->frame_num - list[i - 1]->frame_num;
g_assert (pic_num_diff != 0);
if (pic_num_diff > 0 && !is_asc)
return TRUE;
if (pic_num_diff < 0 && is_asc)
return TRUE;
}
return FALSE;
}
static void
_insert_ref_pic_list_modification (GstH264SliceHdr * slice_hdr,
GstVaH264EncFrame * list[16], guint list_num, gboolean is_asc)
{
GstVaH264EncFrame *list_by_pic_num[16] = { };
guint modification_num, i;
GstH264RefPicListModification *ref_pic_list_modification = NULL;
gint pic_num_diff, pic_num_lx_pred;
memcpy (list_by_pic_num, list, sizeof (GstVaH264EncFrame *) * list_num);
if (is_asc) {
g_qsort_with_data (list_by_pic_num, list_num, sizeof (gpointer),
(GCompareDataFunc) _frame_num_asc_compare, NULL);
} else {
g_qsort_with_data (list_by_pic_num, list_num, sizeof (gpointer),
(GCompareDataFunc) _frame_num_des_compare, NULL);
}
modification_num = 0;
for (i = 0; i < list_num; i++) {
if (list_by_pic_num[i]->poc != list[i]->poc)
modification_num = i + 1;
}
g_assert (modification_num > 0);
if (is_asc) {
slice_hdr->ref_pic_list_modification_flag_l1 = 1;
slice_hdr->n_ref_pic_list_modification_l1 =
modification_num + 1 /* The end operation. */ ;
ref_pic_list_modification = slice_hdr->ref_pic_list_modification_l1;
} else {
slice_hdr->ref_pic_list_modification_flag_l0 = 1;
slice_hdr->n_ref_pic_list_modification_l0 =
modification_num + 1 /* The end operation. */ ;
ref_pic_list_modification = slice_hdr->ref_pic_list_modification_l0;
}
pic_num_lx_pred = slice_hdr->frame_num;
for (i = 0; i < modification_num; i++) {
pic_num_diff = list[i]->frame_num - pic_num_lx_pred;
/* For the nex loop. */
pic_num_lx_pred = list[i]->frame_num;
g_assert (pic_num_diff != 0);
if (pic_num_diff > 0) {
ref_pic_list_modification->modification_of_pic_nums_idc = 1;
ref_pic_list_modification->value.abs_diff_pic_num_minus1 =
pic_num_diff - 1;
} else {
ref_pic_list_modification->modification_of_pic_nums_idc = 0;
ref_pic_list_modification->value.abs_diff_pic_num_minus1 =
(-pic_num_diff) - 1;
}
ref_pic_list_modification++;
}
ref_pic_list_modification->modification_of_pic_nums_idc = 3;
}
static void
_insert_ref_pic_marking_for_unused_frame (GstH264SliceHdr * slice_hdr,
gint cur_frame_num, gint unused_frame_num)
{
GstH264RefPicMarking *refpicmarking;
slice_hdr->dec_ref_pic_marking.adaptive_ref_pic_marking_mode_flag = 1;
slice_hdr->dec_ref_pic_marking.n_ref_pic_marking = 2;
refpicmarking = &slice_hdr->dec_ref_pic_marking.ref_pic_marking[0];
refpicmarking->memory_management_control_operation = 1;
refpicmarking->difference_of_pic_nums_minus1 =
cur_frame_num - unused_frame_num - 1;
refpicmarking = &slice_hdr->dec_ref_pic_marking.ref_pic_marking[1];
refpicmarking->memory_management_control_operation = 0;
}
static gboolean
_add_slice_header (GstVaH264Enc * self, GstVaH264EncFrame * frame,
GstH264PPS * pps, VAEncSliceParameterBufferH264 * slice,
GstVaH264EncFrame * list0[16], guint list0_num,
GstVaH264EncFrame * list1[16], guint list1_num)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
GstH264SliceHdr slice_hdr;
gsize size;
GstH264NalUnitType nal_type = GST_H264_NAL_SLICE;
#define SLICE_HDR_SIZE 4 + GST_ROUND_UP_8 (MAX_SLICE_HDR_SIZE) / 8
guint8 packed_slice_hdr[SLICE_HDR_SIZE] = { 0, };
#undef SLICE_HDR_SIZE
if (frame->frame_num == 0)
nal_type = GST_H264_NAL_SLICE_IDR;
/* *INDENT-OFF* */
slice_hdr = (GstH264SliceHdr) {
.first_mb_in_slice = slice->macroblock_address,
.type = slice->slice_type,
.pps = pps,
.frame_num = frame->frame_num,
/* interlaced not supported now. */
.field_pic_flag = 0,
.bottom_field_flag = 0,
.idr_pic_id = (frame->frame_num == 0 ? slice->idr_pic_id : 0),
/* only pic_order_cnt_type 1 is supported now. */
.pic_order_cnt_lsb = slice->pic_order_cnt_lsb,
.delta_pic_order_cnt_bottom = slice->delta_pic_order_cnt_bottom,
/* Only for B frame. */
.direct_spatial_mv_pred_flag =
(frame->type == GST_H264_B_SLICE ?
slice->direct_spatial_mv_pred_flag : 0),
.num_ref_idx_active_override_flag = slice->num_ref_idx_active_override_flag,
.num_ref_idx_l0_active_minus1 = slice->num_ref_idx_l0_active_minus1,
.num_ref_idx_l1_active_minus1 = slice->num_ref_idx_l1_active_minus1,
/* Calculate it later. */
.ref_pic_list_modification_flag_l0 = 0,
.ref_pic_list_modification_flag_l1 = 0,
/* We have weighted_pred_flag and weighted_bipred_idc 0 here, no
* need weight_table. */
.dec_ref_pic_marking = {
.no_output_of_prior_pics_flag = 0,
.long_term_reference_flag = 0,
/* If not sliding_window, we set it later. */
.adaptive_ref_pic_marking_mode_flag = 0,
},
.cabac_init_idc = slice->cabac_init_idc,
.slice_qp_delta = slice->slice_qp_delta,
.disable_deblocking_filter_idc = slice->disable_deblocking_filter_idc,
.slice_alpha_c0_offset_div2 = slice->slice_alpha_c0_offset_div2,
.slice_beta_offset_div2 = slice->slice_beta_offset_div2,
};
/* *INDENT-ON* */
/* Reorder the ref lists if needed. */
if (list0_num > 1) {
/* list0 is in poc descend order now. */
if (_ref_list_need_reorder (list0, list0_num, FALSE))
_insert_ref_pic_list_modification (&slice_hdr, list0, list0_num, FALSE);
}
if (list0_num > 1) {
/* list0 is in poc ascend order now. */
if (_ref_list_need_reorder (list1, list1_num, TRUE)) {
_insert_ref_pic_list_modification (&slice_hdr, list1, list1_num, TRUE);
}
}
/* Mark the unused reference explicitly which this frame replaces. */
if (frame->unused_for_reference_pic_num >= 0) {
g_assert (frame->is_ref);
_insert_ref_pic_marking_for_unused_frame (&slice_hdr, frame->frame_num,
frame->unused_for_reference_pic_num);
}
size = sizeof (packed_slice_hdr);
if (gst_h264_bit_writer_slice_hdr (&slice_hdr, TRUE, nal_type, frame->is_ref,
packed_slice_hdr, &size) != GST_H264_BIT_WRITER_OK) {
GST_ERROR_OBJECT (self, "Failed to generate the slice header");
return FALSE;
}
if (!gst_va_encoder_add_packed_header (base->encoder, frame->picture,
VAEncPackedHeaderSlice, packed_slice_hdr, size, FALSE)) {
GST_ERROR_OBJECT (self, "Failed to add the packed slice header");
return FALSE;
}
return TRUE;
}
static gboolean
_add_aud (GstVaH264Enc * self, GstVaH264EncFrame * frame)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
guint8 aud_data[8] = { };
gsize size;
guint8 primary_pic_type = 0;
switch (frame->type) {
case GST_H264_I_SLICE:
primary_pic_type = 0;
break;
case GST_H264_P_SLICE:
primary_pic_type = 1;
break;
case GST_H264_B_SLICE:
primary_pic_type = 2;
break;
default:
g_assert_not_reached ();
break;
}
size = sizeof (aud_data);
if (gst_h264_bit_writer_aud (primary_pic_type, TRUE, aud_data,
&size) != GST_H264_BIT_WRITER_OK) {
GST_ERROR_OBJECT (self, "Failed to generate the AUD");
return FALSE;
}
if (!gst_va_encoder_add_packed_header (base->encoder, frame->picture,
VAEncPackedHeaderRawData, aud_data, size, FALSE)) {
GST_ERROR_OBJECT (self, "Failed to add the AUD");
return FALSE;
}
return TRUE;
}
static gboolean
_encode_one_frame (GstVaH264Enc * self, GstVideoCodecFrame * gst_frame)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
VAEncPictureParameterBufferH264 pic_param;
GstH264PPS pps;
GstVaH264EncFrame *list0[16] = { NULL, };
guint list0_num = 0;
GstVaH264EncFrame *list1[16] = { NULL, };
guint list1_num = 0;
guint slice_of_mbs, slice_mod_mbs, slice_start_mb, slice_mbs;
gint i;
GstVaH264EncFrame *frame;
g_return_val_if_fail (gst_frame, FALSE);
frame = _enc_frame (gst_frame);
if (self->aud && !_add_aud (self, frame))
return FALSE;
/* Repeat the SPS for IDR. */
if (frame->poc == 0) {
VAEncSequenceParameterBufferH264 sequence;
if (!gst_va_base_enc_add_rate_control_parameter (base, frame->picture,
self->rc.rc_ctrl_mode, self->rc.max_bitrate_bits,
self->rc.target_percentage, self->rc.qp_i, self->rc.min_qp,
self->rc.max_qp, self->rc.mbbrc))
return FALSE;
if (!gst_va_base_enc_add_quality_level_parameter (base, frame->picture,
self->rc.target_usage))
return FALSE;
if (!gst_va_base_enc_add_frame_rate_parameter (base, frame->picture))
return FALSE;
if (!gst_va_base_enc_add_hrd_parameter (base, frame->picture,
self->rc.rc_ctrl_mode, self->rc.cpb_length_bits))
return FALSE;
if (!gst_va_base_enc_add_trellis_parameter (base, frame->picture,
self->use_trellis))
return FALSE;
_fill_sequence_param (self, &sequence);
if (!_fill_sps (self, &sequence))
return FALSE;
if (!_add_sequence_parameter (self, frame->picture, &sequence))
return FALSE;
if ((self->packed_headers & VA_ENC_PACKED_HEADER_SEQUENCE)
&& !_add_sequence_header (self, frame))
return FALSE;
}
/* Non I frame, construct reference list. */
if (frame->type != GST_H264_I_SLICE) {
GstVaH264EncFrame *vaf;
GstVideoCodecFrame *f;
for (i = g_queue_get_length (&base->ref_list) - 1; i >= 0; i--) {
f = g_queue_peek_nth (&base->ref_list, i);
vaf = _enc_frame (f);
if (vaf->poc > frame->poc)
continue;
list0[list0_num] = vaf;
list0_num++;
}
/* reorder to select the most nearest forward frames. */
g_qsort_with_data (list0, list0_num, sizeof (gpointer),
(GCompareDataFunc) _poc_des_compare, NULL);
if (list0_num > self->gop.ref_num_list0)
list0_num = self->gop.ref_num_list0;
}
if (frame->type == GST_H264_B_SLICE) {
GstVaH264EncFrame *vaf;
GstVideoCodecFrame *f;
for (i = 0; i < g_queue_get_length (&base->ref_list); i++) {
f = g_queue_peek_nth (&base->ref_list, i);
vaf = _enc_frame (f);
if (vaf->poc < frame->poc)
continue;
list1[list1_num] = vaf;
list1_num++;
}
/* reorder to select the most nearest backward frames. */
g_qsort_with_data (list1, list1_num, sizeof (gpointer),
(GCompareDataFunc) _poc_asc_compare, NULL);
if (list1_num > self->gop.ref_num_list1)
list1_num = self->gop.ref_num_list1;
}
g_assert (list0_num + list1_num <= self->gop.num_ref_frames);
if (!_fill_picture_parameter (self, frame, &pic_param))
return FALSE;
if (!_add_picture_parameter (self, frame, &pic_param))
return FALSE;
_fill_pps (&pic_param, &self->sequence_hdr, &pps);
if ((self->packed_headers & VA_ENC_PACKED_HEADER_PICTURE)
&& frame->type == GST_H264_I_SLICE
&& !_add_picture_header (self, frame, &pps))
return FALSE;
slice_of_mbs = self->mb_width * self->mb_height / self->num_slices;
slice_mod_mbs = self->mb_width * self->mb_height % self->num_slices;
slice_start_mb = 0;
slice_mbs = 0;
for (i = 0; i < self->num_slices; i++) {
VAEncSliceParameterBufferH264 slice;
slice_mbs = slice_of_mbs;
/* divide the remainder to each equally */
if (slice_mod_mbs) {
slice_mbs++;
slice_mod_mbs--;
}
if (!_add_one_slice (self, frame, slice_start_mb, slice_mbs, &slice,
list0, list0_num, list1, list1_num))
return FALSE;
if ((self->packed_headers & VA_ENC_PACKED_HEADER_SLICE) &&
(!_add_slice_header (self, frame, &pps, &slice, list0, list0_num,
list1, list1_num)))
return FALSE;
slice_start_mb += slice_mbs;
}
if (!gst_va_encoder_encode (base->encoder, frame->picture)) {
GST_ERROR_OBJECT (self, "Encode frame error");
return FALSE;
}
return TRUE;
}
static gboolean
gst_va_h264_enc_flush (GstVideoEncoder * venc)
{
GstVaH264Enc *self = GST_VA_H264_ENC (venc);
/* begin from an IDR after flush. */
self->gop.cur_frame_index = 0;
self->gop.cur_frame_num = 0;
return GST_VIDEO_ENCODER_CLASS (parent_class)->flush (venc);
}
static void
gst_va_h264_enc_prepare_output (GstVaBaseEnc * base, GstVideoCodecFrame * frame)
{
GstVaH264Enc *self = GST_VA_H264_ENC (base);
GstVaH264EncFrame *frame_enc;
frame_enc = _enc_frame (frame);
frame->pts =
base->start_pts + base->frame_duration * frame_enc->total_frame_count;
/* The PTS should always be later than the DTS. */
frame->dts = base->start_pts + base->frame_duration *
((gint64) base->output_frame_count -
(gint64) self->gop.num_reorder_frames);
base->output_frame_count++;
frame->duration = base->frame_duration;
}
static gint
_sort_by_frame_num (gconstpointer a, gconstpointer b, gpointer user_data)
{
GstVaH264EncFrame *frame1 = _enc_frame ((GstVideoCodecFrame *) a);
GstVaH264EncFrame *frame2 = _enc_frame ((GstVideoCodecFrame *) b);
g_assert (frame1->frame_num != frame2->frame_num);
return frame1->frame_num - frame2->frame_num;
}
static GstVideoCodecFrame *
_find_unused_reference_frame (GstVaH264Enc * self, GstVaH264EncFrame * frame)
{
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
GstVaH264EncFrame *b_vaframe;
GstVideoCodecFrame *b_frame;
guint i;
/* We still have more space. */
if (g_queue_get_length (&base->ref_list) < self->gop.num_ref_frames)
return NULL;
/* Not b_pyramid, sliding window is enough. */
if (!self->gop.b_pyramid)
return g_queue_peek_head (&base->ref_list);
/* I/P frame, just using sliding window. */
if (frame->type != GST_H264_B_SLICE)
return g_queue_peek_head (&base->ref_list);
/* Choose the B frame with lowest POC. */
b_frame = NULL;
b_vaframe = NULL;
for (i = 0; i < g_queue_get_length (&base->ref_list); i++) {
GstVaH264EncFrame *vaf;
GstVideoCodecFrame *f;
f = g_queue_peek_nth (&base->ref_list, i);
vaf = _enc_frame (f);
if (vaf->type != GST_H264_B_SLICE)
continue;
if (!b_frame) {
b_frame = f;
b_vaframe = _enc_frame (b_frame);
continue;
}
b_vaframe = _enc_frame (b_frame);
g_assert (vaf->poc != b_vaframe->poc);
if (vaf->poc < b_vaframe->poc) {
b_frame = f;
b_vaframe = _enc_frame (b_frame);
}
}
/* No B frame as ref. */
if (!b_frame)
return g_queue_peek_head (&base->ref_list);
if (b_frame != g_queue_peek_head (&base->ref_list)) {
b_vaframe = _enc_frame (b_frame);
frame->unused_for_reference_pic_num = b_vaframe->frame_num;
GST_LOG_OBJECT (self, "The frame with POC: %d, pic_num %d will be"
" replaced by the frame with POC: %d, pic_num %d explicitly by"
" using memory_management_control_operation=1",
b_vaframe->poc, b_vaframe->frame_num, frame->poc, frame->frame_num);
}
return b_frame;
}
static GstFlowReturn
gst_va_h264_enc_encode_frame (GstVaBaseEnc * base,
GstVideoCodecFrame * gst_frame, gboolean is_last)
{
GstVaH264Enc *self = GST_VA_H264_ENC (base);
GstVaH264EncFrame *frame;
GstVideoCodecFrame *unused_ref = NULL;
frame = _enc_frame (gst_frame);
frame->last_frame = is_last;
g_assert (frame->picture == NULL);
frame->picture = gst_va_encode_picture_new (base->encoder,
gst_frame->input_buffer);
if (!frame->picture) {
GST_ERROR_OBJECT (self, "Failed to create the encode picture");
return GST_FLOW_ERROR;
}
if (frame->is_ref)
unused_ref = _find_unused_reference_frame (self, frame);
if (!_encode_one_frame (self, gst_frame)) {
GST_ERROR_OBJECT (self, "Failed to encode the frame");
return GST_FLOW_ERROR;
}
g_queue_push_tail (&base->output_list, gst_video_codec_frame_ref (gst_frame));
if (frame->is_ref) {
if (unused_ref) {
if (!g_queue_remove (&base->ref_list, unused_ref))
g_assert_not_reached ();
gst_video_codec_frame_unref (unused_ref);
}
/* Add it into the reference list. */
g_queue_push_tail (&base->ref_list, gst_video_codec_frame_ref (gst_frame));
g_queue_sort (&base->ref_list, _sort_by_frame_num, NULL);
g_assert (g_queue_get_length (&base->ref_list) <= self->gop.num_ref_frames);
}
return GST_FLOW_OK;
}
static gboolean
gst_va_h264_enc_new_frame (GstVaBaseEnc * base, GstVideoCodecFrame * frame)
{
GstVaH264EncFrame *frame_in;
frame_in = gst_va_enc_frame_new ();
frame_in->total_frame_count = base->input_frame_count++;
gst_video_codec_frame_set_user_data (frame, frame_in, gst_va_enc_frame_free);
return TRUE;
}
/* *INDENT-OFF* */
static const gchar *sink_caps_str =
GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_VA,
"{ NV12 }") " ;"
GST_VIDEO_CAPS_MAKE ("{ NV12 }");
/* *INDENT-ON* */
static const gchar *src_caps_str = "video/x-h264";
static gpointer
_register_debug_category (gpointer data)
{
GST_DEBUG_CATEGORY_INIT (gst_va_h264enc_debug, "vah264enc", 0,
"VA h264 encoder");
return NULL;
}
static void
gst_va_h264_enc_init (GTypeInstance * instance, gpointer g_class)
{
GstVaH264Enc *self = GST_VA_H264_ENC (instance);
/* default values */
self->prop.key_int_max = 0;
self->prop.num_bframes = 0;
self->prop.num_iframes = 0;
self->prop.num_ref_frames = 3;
self->prop.b_pyramid = FALSE;
self->prop.num_slices = 1;
self->prop.min_qp = 1;
self->prop.max_qp = 51;
self->prop.qp_i = 26;
self->prop.qp_p = 26;
self->prop.qp_b = 26;
self->prop.use_dct8x8 = TRUE;
self->prop.use_cabac = TRUE;
self->prop.use_trellis = FALSE;
self->prop.aud = FALSE;
self->prop.mbbrc = 0;
self->prop.bitrate = 0;
self->prop.target_percentage = 66;
self->prop.target_usage = 4;
if (properties[PROP_RATE_CONTROL]) {
self->prop.rc_ctrl =
G_PARAM_SPEC_ENUM (properties[PROP_RATE_CONTROL])->default_value;
} else {
self->prop.rc_ctrl = VA_RC_NONE;
}
self->prop.cpb_size = 0;
}
static void
gst_va_h264_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVaH264Enc *const self = GST_VA_H264_ENC (object);
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
if (base->encoder && gst_va_encoder_is_open (base->encoder)) {
GST_ERROR_OBJECT (object,
"failed to set any property after encoding started");
return;
}
GST_OBJECT_LOCK (self);
switch (prop_id) {
case PROP_KEY_INT_MAX:
self->prop.key_int_max = g_value_get_uint (value);
break;
case PROP_BFRAMES:
self->prop.num_bframes = g_value_get_uint (value);
break;
case PROP_IFRAMES:
self->prop.num_iframes = g_value_get_uint (value);
break;
case PROP_NUM_REF_FRAMES:
self->prop.num_ref_frames = g_value_get_uint (value);
break;
case PROP_B_PYRAMID:
self->prop.b_pyramid = g_value_get_boolean (value);
break;
case PROP_NUM_SLICES:
self->prop.num_slices = g_value_get_uint (value);
break;
case PROP_MIN_QP:
self->prop.min_qp = g_value_get_uint (value);
break;
case PROP_MAX_QP:
self->prop.max_qp = g_value_get_uint (value);
break;
case PROP_QP_I:
self->prop.qp_i = g_value_get_uint (value);
break;
case PROP_QP_P:
self->prop.qp_p = g_value_get_uint (value);
break;
case PROP_QP_B:
self->prop.qp_b = g_value_get_uint (value);
break;
case PROP_DCT8X8:
self->prop.use_dct8x8 = g_value_get_boolean (value);
break;
case PROP_CABAC:
self->prop.use_cabac = g_value_get_boolean (value);
break;
case PROP_TRELLIS:
self->prop.use_trellis = g_value_get_boolean (value);
break;
case PROP_AUD:
self->prop.aud = g_value_get_boolean (value);
break;
case PROP_MBBRC:{
/* Macroblock-level rate control.
* 0: use default,
* 1: always enable,
* 2: always disable,
* other: reserved. */
switch (g_value_get_enum (value)) {
case GST_VA_FEATURE_DISABLED:
self->prop.mbbrc = 2;
break;
case GST_VA_FEATURE_ENABLED:
self->prop.mbbrc = 1;
break;
case GST_VA_FEATURE_AUTO:
self->prop.mbbrc = 0;
break;
}
break;
}
case PROP_BITRATE:
self->prop.bitrate = g_value_get_uint (value);
break;
case PROP_TARGET_PERCENTAGE:
self->prop.target_percentage = g_value_get_uint (value);
break;
case PROP_TARGET_USAGE:
self->prop.target_usage = g_value_get_uint (value);
break;
case PROP_RATE_CONTROL:
self->prop.rc_ctrl = g_value_get_enum (value);
break;
case PROP_CPB_SIZE:
self->prop.cpb_size = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_va_h264_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstVaH264Enc *const self = GST_VA_H264_ENC (object);
GST_OBJECT_LOCK (self);
switch (prop_id) {
case PROP_KEY_INT_MAX:
g_value_set_uint (value, self->prop.key_int_max);
break;
case PROP_BFRAMES:
g_value_set_uint (value, self->prop.num_bframes);
break;
case PROP_IFRAMES:
g_value_set_uint (value, self->prop.num_iframes);
break;
case PROP_NUM_REF_FRAMES:
g_value_set_uint (value, self->prop.num_ref_frames);
break;
case PROP_B_PYRAMID:
g_value_set_boolean (value, self->prop.b_pyramid);
break;
case PROP_NUM_SLICES:
g_value_set_uint (value, self->prop.num_slices);
break;
case PROP_MIN_QP:
g_value_set_uint (value, self->prop.min_qp);
break;
case PROP_MAX_QP:
g_value_set_uint (value, self->prop.max_qp);
break;
case PROP_QP_I:
g_value_set_uint (value, self->prop.qp_i);
break;
case PROP_QP_P:
g_value_set_uint (value, self->prop.qp_p);
break;
case PROP_QP_B:
g_value_set_uint (value, self->prop.qp_b);
break;
case PROP_DCT8X8:
g_value_set_boolean (value, self->prop.use_dct8x8);
break;
case PROP_CABAC:
g_value_set_boolean (value, self->prop.use_cabac);
break;
case PROP_TRELLIS:
g_value_set_boolean (value, self->prop.use_trellis);
break;
case PROP_AUD:
g_value_set_boolean (value, self->prop.aud);
break;
case PROP_MBBRC:
g_value_set_enum (value, self->prop.mbbrc);
break;
case PROP_BITRATE:
g_value_set_uint (value, self->prop.bitrate);
break;
case PROP_TARGET_PERCENTAGE:
g_value_set_uint (value, self->prop.target_percentage);
break;
case PROP_TARGET_USAGE:
g_value_set_uint (value, self->prop.target_usage);
break;
case PROP_RATE_CONTROL:
g_value_set_enum (value, self->prop.rc_ctrl);
break;
case PROP_CPB_SIZE:
g_value_set_uint (value, self->prop.cpb_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_va_h264_enc_class_init (gpointer g_klass, gpointer class_data)
{
GstCaps *src_doc_caps, *sink_doc_caps;
GstPadTemplate *sink_pad_templ, *src_pad_templ;
GObjectClass *object_class = G_OBJECT_CLASS (g_klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_klass);
GstVideoEncoderClass *venc_class = GST_VIDEO_ENCODER_CLASS (g_klass);
GstVaBaseEncClass *va_enc_class = GST_VA_BASE_ENC_CLASS (g_klass);
GstVaH264EncClass *vah264enc_class = GST_VA_H264_ENC_CLASS (g_klass);
GstVaDisplay *display;
GstVaEncoder *encoder;
struct CData *cdata = class_data;
gchar *long_name;
const gchar *name, *desc;
gint n_props = N_PROPERTIES;
if (cdata->entrypoint == VAEntrypointEncSlice) {
desc = "VA-API based H.264 video encoder";
name = "VA-API H.264 Encoder";
} else {
desc = "VA-API based H.264 low power video encoder";
name = "VA-API H.264 Low Power Encoder";
}
if (cdata->description)
long_name = g_strdup_printf ("%s in %s", name, cdata->description);
else
long_name = g_strdup (name);
gst_element_class_set_metadata (element_class, long_name,
"Codec/Encoder/Video/Hardware", desc, "He Junyan <junyan.he@intel.com>");
sink_doc_caps = gst_caps_from_string (sink_caps_str);
src_doc_caps = gst_caps_from_string (src_caps_str);
parent_class = g_type_class_peek_parent (g_klass);
va_enc_class->codec = H264;
va_enc_class->entrypoint = cdata->entrypoint;
va_enc_class->render_device_path = g_strdup (cdata->render_device_path);
sink_pad_templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
cdata->sink_caps);
gst_element_class_add_pad_template (element_class, sink_pad_templ);
gst_pad_template_set_documentation_caps (sink_pad_templ, sink_doc_caps);
gst_caps_unref (sink_doc_caps);
src_pad_templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
cdata->src_caps);
gst_element_class_add_pad_template (element_class, src_pad_templ);
gst_pad_template_set_documentation_caps (src_pad_templ, src_doc_caps);
gst_caps_unref (src_doc_caps);
object_class->set_property = gst_va_h264_enc_set_property;
object_class->get_property = gst_va_h264_enc_get_property;
venc_class->flush = GST_DEBUG_FUNCPTR (gst_va_h264_enc_flush);
va_enc_class->reset_state = GST_DEBUG_FUNCPTR (gst_va_h264_enc_reset_state);
va_enc_class->reconfig = GST_DEBUG_FUNCPTR (gst_va_h264_enc_reconfig);
va_enc_class->new_frame = GST_DEBUG_FUNCPTR (gst_va_h264_enc_new_frame);
va_enc_class->reorder_frame =
GST_DEBUG_FUNCPTR (gst_va_h264_enc_reorder_frame);
va_enc_class->encode_frame = GST_DEBUG_FUNCPTR (gst_va_h264_enc_encode_frame);
va_enc_class->prepare_output =
GST_DEBUG_FUNCPTR (gst_va_h264_enc_prepare_output);
{
display =
gst_va_display_drm_new_from_path (va_enc_class->render_device_path);
encoder = gst_va_encoder_new (display, va_enc_class->codec,
va_enc_class->entrypoint);
if (gst_va_encoder_get_rate_control_enum (encoder,
vah264enc_class->rate_control)) {
g_snprintf (vah264enc_class->rate_control_type_name,
G_N_ELEMENTS (vah264enc_class->rate_control_type_name) - 1,
"GstVaEncoderRateControl_%" GST_FOURCC_FORMAT "%s_%s",
GST_FOURCC_ARGS (va_enc_class->codec),
(va_enc_class->entrypoint == VAEntrypointEncSliceLP) ? "_LP" : "",
g_path_get_basename (va_enc_class->render_device_path));
vah264enc_class->rate_control_type =
g_enum_register_static (vah264enc_class->rate_control_type_name,
vah264enc_class->rate_control);
gst_type_mark_as_plugin_api (vah264enc_class->rate_control_type, 0);
}
gst_object_unref (encoder);
gst_object_unref (display);
}
g_free (long_name);
g_free (cdata->description);
g_free (cdata->render_device_path);
gst_caps_unref (cdata->src_caps);
gst_caps_unref (cdata->sink_caps);
g_free (cdata);
/**
* GstVaEncoder:key-int-max:
*
* The maximal distance between two keyframes.
*/
properties[PROP_KEY_INT_MAX] = g_param_spec_uint ("key-int-max",
"Key frame maximal interval",
"The maximal distance between two keyframes. It decides the size of GOP"
" (0: auto-calculate)", 0, MAX_GOP_SIZE, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:b-frames:
*
* Number of B-frames between two reference frames.
*/
properties[PROP_BFRAMES] = g_param_spec_uint ("b-frames", "B Frames",
"Number of B frames between I and P reference frames", 0, 31, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:i-frames:
*
* Force the number of i-frames insertion within one GOP.
*/
properties[PROP_IFRAMES] = g_param_spec_uint ("i-frames", "I Frames",
"Force the number of I frames insertion within one GOP, not including the "
"first IDR frame", 0, 1023, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:ref-frames:
*
* The number of reference frames.
*/
properties[PROP_NUM_REF_FRAMES] = g_param_spec_uint ("ref-frames",
"Number of Reference Frames",
"Number of reference frames, including both the forward and the backward",
0, 16, 3, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:b-pyramid:
*
* Enable the b-pyramid reference structure in GOP.
*/
properties[PROP_B_PYRAMID] = g_param_spec_boolean ("b-pyramid", "b pyramid",
"Enable the b-pyramid reference structure in the GOP", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:num-slices:
*
* The number of slices per frame.
*/
properties[PROP_NUM_SLICES] = g_param_spec_uint ("num-slices",
"Number of Slices", "Number of slices per frame", 1, 200, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:max-qp:
*
* The maximum quantizer value.
*/
properties[PROP_MAX_QP] = g_param_spec_uint ("max-qp", "Maximum QP",
"Maximum quantizer value for each frame", 0, 51, 51,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:min-qp:
*
* The minimum quantizer value.
*/
properties[PROP_MIN_QP] = g_param_spec_uint ("min-qp", "Minimum QP",
"Minimum quantizer value for each frame", 0, 51, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:qpi:
*
* The quantizer value for I frame. In CQP mode, it specifies the QP of
* I frame, in other mode, it specifies the init QP of all frames.
*/
properties[PROP_QP_I] = g_param_spec_uint ("qpi", "I Frame QP",
"The quantizer value for I frame. In CQP mode, it specifies the QP of I "
"frame, in other mode, it specifies the init QP of all frames", 0, 51, 26,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:qpp:
*
* The quantizer value for P frame. This is available only in CQP mode.
*/
properties[PROP_QP_P] = g_param_spec_uint ("qpp",
"The quantizer value for P frame",
"The quantizer value for P frame. This is available only in CQP mode",
0, 51, 26,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:qpb:
*
* The quantizer value for B frame. This is available only in CQP mode.
*/
properties[PROP_QP_B] = g_param_spec_uint ("qpb",
"The quantizer value for B frame",
"The quantizer value for B frame. This is available only in CQP mode",
0, 51, 26,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:dct8x8:
*
* Enable adaptive use of 8x8 transforms in I-frames. This improves
* the compression ratio but requires high profile at least.
*/
properties[PROP_DCT8X8] = g_param_spec_boolean ("dct8x8",
"Enable 8x8 DCT",
"Enable adaptive use of 8x8 transforms in I-frames", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:cabac:
*
* It enables CABAC entropy coding mode to improve compression ratio,
* but requires main profile at least.
*/
properties[PROP_CABAC] = g_param_spec_boolean ("cabac", "Enable CABAC",
"Enable CABAC entropy coding mode", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:trellis:
*
* It enable the trellis quantization method.
* Trellis is an improved quantization algorithm.
*/
properties[PROP_TRELLIS] = g_param_spec_boolean ("trellis", "Enable trellis",
"Enable the trellis quantization method", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:aud:
*
* Insert the AU (Access Unit) delimeter for each frame.
*/
properties[PROP_AUD] = g_param_spec_boolean ("aud", "Insert AUD",
"Insert AU (Access Unit) delimeter for each frame", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:mbbrc:
*
* Macroblock level bitrate control.
* This is not compatible with Constant QP rate control.
*/
properties[PROP_MBBRC] = g_param_spec_enum ("mbbrc",
"Macroblock level Bitrate Control",
"Macroblock level Bitrate Control. It is not compatible with CQP",
GST_TYPE_VA_FEATURE, GST_VA_FEATURE_AUTO,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:bitrate:
*
* The desired target bitrate, expressed in kbps.
* This is not available in CQP mode.
*
* CBR: This applies equally to the minimum, maximum and target bitrate.
* VBR: This applies to the target bitrate. The driver will use the
* "target-percentage" together to calculate the minimum and maximum bitrate.
* VCM: This applies to the target bitrate. The minimum and maximum bitrate
* are not needed.
*/
properties[PROP_BITRATE] = g_param_spec_uint ("bitrate", "Bitrate (kbps)",
"The desired bitrate expressed in kbps (0: auto-calculate)",
0, 2000 * 1024, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:target-percentage:
*
* The target percentage of the max bitrate, and expressed in uint,
* equal to "target percentage"*100.
* "target percentage" = "target bitrate" * 100 / "max bitrate"
* This is available only when rate-control is VBR.
* The driver uses it to calculate the minimum and maximum bitrate.
*/
properties[PROP_TARGET_PERCENTAGE] = g_param_spec_uint ("target-percentage",
"target bitrate percentage",
"The percentage for 'target bitrate'/'maximum bitrate' (Only in VBR)",
50, 100, 66,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:target-usage:
*
* The target usage of the encoder. It controls and balances the encoding
* speed and the encoding quality. The lower value has better quality but
* slower speed, the higher value has faster speed but lower quality.
*/
properties[PROP_TARGET_USAGE] = g_param_spec_uint ("target-usage",
"target usage",
"The target usage to control and balance the encoding speed/quality",
1, 7, 4, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* GstVaH264Enc:cpb-size:
*
* The desired max CPB size in Kb (0: auto-calculate).
*/
properties[PROP_CPB_SIZE] = g_param_spec_uint ("cpb-size",
"max CPB size in Kb",
"The desired max CPB size in Kb (0: auto-calculate)", 0, 2000 * 1024, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
if (vah264enc_class->rate_control_type > 0) {
properties[PROP_RATE_CONTROL] = g_param_spec_enum ("rate-control",
"rate control mode", "The desired rate control mode for the encoder",
vah264enc_class->rate_control_type,
vah264enc_class->rate_control[0].value,
GST_PARAM_CONDITIONALLY_AVAILABLE | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
} else {
n_props--;
properties[PROP_RATE_CONTROL] = NULL;
}
g_object_class_install_properties (object_class, n_props, properties);
}
static GstCaps *
_complete_src_caps (GstCaps * srccaps)
{
GstCaps *caps = gst_caps_copy (srccaps);
gst_caps_set_simple (caps, "alignment", G_TYPE_STRING, "au", "stream-format",
G_TYPE_STRING, "byte-stream", NULL);
return caps;
}
/* bug in mesa gallium which adds P010_10LE. Admit only 420 chroma formats */
static GstCaps *
_fix_sink_caps (GstVaDisplay * display, GstCaps * sinkcaps)
{
GstCaps *caps;
guint i, j;
if (!GST_VA_DISPLAY_IS_IMPLEMENTATION (display, MESA_GALLIUM))
return gst_caps_ref (sinkcaps);
caps = gst_caps_copy (sinkcaps);
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *st = gst_caps_get_structure (caps, i);
const GValue *formats = gst_structure_get_value (st, "format");
GArray *fmts;
guint num;
/* let's accept it as is */
if (G_VALUE_HOLDS_STRING (formats))
continue;
g_assert (GST_VALUE_HOLDS_LIST (formats));
num = gst_value_list_get_size (formats);
fmts = g_array_sized_new (FALSE, FALSE, sizeof (GstVideoFormat), num);
for (j = 0; j < num; j++) {
const gchar *format =
g_value_get_string (gst_value_list_get_value (formats, j));
GstVideoFormat f = gst_video_format_from_string (format);
if (f != GST_VIDEO_FORMAT_UNKNOWN
&& gst_va_chroma_from_video_format (f) == VA_RT_FORMAT_YUV420)
g_array_append_val (fmts, f);
}
if (fmts->len == 0) {
GST_ERROR ("No valid formats in sink caps template.");
g_array_unref (fmts);
return caps;
}
if (fmts->len == 1) {
GValue v = G_VALUE_INIT;
/* let's accept it as is */
g_value_init (&v, G_TYPE_STRING);
g_value_set_string (&v,
gst_video_format_to_string (g_array_index (fmts, GstVideoFormat, 0)));
gst_structure_set_value (st, "format", &v);
g_value_unset (&v);
} else {
GValue val = G_VALUE_INIT;
gst_value_array_init (&val, fmts->len);
for (j = 0; j < fmts->len; j++) {
GValue v = G_VALUE_INIT;
g_value_init (&v, G_TYPE_STRING);
g_value_set_string (&v,
gst_video_format_to_string (g_array_index (fmts, GstVideoFormat,
j)));
gst_value_array_append_value (&val, &v);
g_value_unset (&v);
}
gst_structure_set_value (st, "format", &val);
g_value_unset (&val);
}
g_array_unref (fmts);
}
return caps;
}
gboolean
gst_va_h264_enc_register (GstPlugin * plugin, GstVaDevice * device,
GstCaps * sink_caps, GstCaps * src_caps, guint rank,
VAEntrypoint entrypoint)
{
static GOnce debug_once = G_ONCE_INIT;
GType type;
GTypeInfo type_info = {
.class_size = sizeof (GstVaH264EncClass),
.class_init = gst_va_h264_enc_class_init,
.instance_size = sizeof (GstVaH264Enc),
.instance_init = gst_va_h264_enc_init,
};
struct CData *cdata;
gboolean ret;
gchar *type_name, *feature_name;
g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
g_return_val_if_fail (GST_IS_VA_DEVICE (device), FALSE);
g_return_val_if_fail (GST_IS_CAPS (sink_caps), FALSE);
g_return_val_if_fail (GST_IS_CAPS (src_caps), FALSE);
g_return_val_if_fail (entrypoint == VAEntrypointEncSlice ||
entrypoint == VAEntrypointEncSliceLP, FALSE);
cdata = g_new (struct CData, 1);
cdata->entrypoint = entrypoint;
cdata->description = NULL;
cdata->render_device_path = g_strdup (device->render_device_path);
cdata->sink_caps = _fix_sink_caps (device->display, sink_caps);
cdata->src_caps = _complete_src_caps (src_caps);
/* class data will be leaked if the element never gets instantiated */
GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_MINI_OBJECT_FLAG_SET (cdata->src_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
type_info.class_data = cdata;
if (entrypoint == VAEntrypointEncSlice) {
type_name = g_strdup ("GstVaH264Enc");
feature_name = g_strdup ("vah264enc");
} else {
type_name = g_strdup ("GstVaH264LPEnc");
feature_name = g_strdup ("vah264lpenc");
}
/* The first encoder to be registered should use a constant name,
* like vah264enc, for any additional encoders, we create unique
* names, using inserting the render device name. */
if (g_type_from_name (type_name)) {
gchar *basename = g_path_get_basename (device->render_device_path);
g_free (type_name);
g_free (feature_name);
if (entrypoint == VAEntrypointEncSlice) {
type_name = g_strdup_printf ("GstVa%sH264Enc", basename);
feature_name = g_strdup_printf ("va%sh264enc", basename);
} else {
type_name = g_strdup_printf ("GstVa%sH264LPEnc", basename);
feature_name = g_strdup_printf ("va%sh264lpenc", basename);
}
cdata->description = basename;
/* lower rank for non-first device */
if (rank > 0)
rank--;
}
g_once (&debug_once, _register_debug_category, NULL);
type = g_type_register_static (GST_TYPE_VA_BASE_ENC,
type_name, &type_info, 0);
ret = gst_element_register (plugin, feature_name, rank, type);
g_free (type_name);
g_free (feature_name);
return ret;
}
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