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Dirac decoding/encoding support via libdirac.

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patch by Anuradha Suraparaju, anuradha rd.bbc.co uk

Originally committed as revision 13042 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Anuradha Suraparaju 17 years ago committed by Diego Biurrun
parent 575e696ce4
commit 690bfceb20
6 changed files with 637 additions and 0 deletions
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  1. 9
      configure
  2. 2
      libavcodec/Makefile
  3. 1
      libavcodec/allcodecs.c
  4. 44
      libavcodec/libdirac.h
  5. 208
      libavcodec/libdiracdec.c
  6. 373
      libavcodec/libdiracenc.c

9
configure vendored
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@ -90,6 +90,7 @@ show_help(){
echo " --enable-libamr-wb enable libamr-wb floating point audio codec"
echo " --enable-libdc1394 enable IIDC-1394 grabbing using libdc1394"
echo " and libraw1394 [default=no]"
echo " --enable-libdirac enable Dirac support via libdirac [default=no]"
echo " --enable-libfaac enable FAAC support via libfaac [default=no]"
echo " --enable-libfaad enable FAAD support via libfaad [default=no]"
echo " --enable-libfaadbin open libfaad.so.0 at runtime [default=no]"
@ -641,6 +642,7 @@ CONFIG_LIST="
libamr_nb
libamr_wb
libdc1394
libdirac
libfaac
libfaad
libfaadbin
@ -822,6 +824,8 @@ libamr_nb_decoder_deps="libamr_nb"
libamr_nb_encoder_deps="libamr_nb"
libamr_wb_decoder_deps="libamr_wb"
libamr_wb_encoder_deps="libamr_wb"
libdirac_decoder_deps="libdirac"
libdirac_encoder_deps="libdirac"
libfaac_encoder_deps="libfaac"
libfaad_decoder_deps="libfaad"
libfaadbin_decoder_extralibs='$ldl'
@ -1625,6 +1629,9 @@ enabled avisynth && require2 vfw32 "windows.h vfw.h" AVIFileInit -lvfw32
enabled liba52 && require liba52 a52dec/a52.h a52_init -la52
enabled libamr_nb && require libamrnb amrnb/interf_dec.h Speech_Decode_Frame_init -lamrnb -lm
enabled libamr_wb && require libamrwb amrwb/dec_if.h D_IF_init -lamrwb -lm
enabled libdirac && add_cflags "$(pkg-config --cflags dirac)" \
&& require libdirac libdirac_decoder/dirac_parser.h dirac_decoder_init -ldirac_decoder \
&& require libdirac libdirac_encoder/dirac_encoder.h dirac_encoder_init -ldirac_encoder
enabled libfaac && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
enabled libfaad && require2 libfaad faad.h faacDecOpen -lfaad
enabled libgsm && require libgsm gsm.h gsm_create -lgsm
@ -1845,6 +1852,7 @@ check_deps $CONFIG_LIST \
$PROTOCOL_LIST \
enabled libdc1394 && append pkg_requires "libraw1394"
enabled libdirac && append pkg_requires "dirac"
enabled libtheora && append pkg_requires "theora"
enabled libvorbis && append pkg_requires "vorbisenc"
@ -1908,6 +1916,7 @@ echo "liba52 dlopened ${liba52bin-no}"
echo "libamr-nb support ${libamr_nb-no}"
echo "libamr-wb support ${libamr_wb-no}"
echo "libdc1394 support ${libdc1394-no}"
echo "libdirac enabled ${libdirac-no}"
echo "libfaac enabled ${libfaac-no}"
echo "libfaad enabled ${libfaad-no}"
echo "libfaad dlopened ${libfaadbin-no}"

2
libavcodec/Makefile
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@ -319,6 +319,8 @@ OBJS-$(CONFIG_RTP_MUXER) += mpegvideo.o
OBJS-$(CONFIG_LIBA52) += liba52.o
OBJS-$(CONFIG_LIBAMR_NB) += libamr.o
OBJS-$(CONFIG_LIBAMR_WB) += libamr.o
OBJS-$(CONFIG_LIBDIRAC_DECODER) += libdiracdec.o
OBJS-$(CONFIG_LIBDIRAC_ENCODER) += libdiracenc.o libdirac_libschro.o
OBJS-$(CONFIG_LIBFAAC) += libfaac.o
OBJS-$(CONFIG_LIBFAAD) += libfaad.o
OBJS-$(CONFIG_LIBGSM) += libgsm.o

1
libavcodec/allcodecs.c
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@ -277,6 +277,7 @@ void avcodec_register_all(void)
REGISTER_DECODER (LIBA52, liba52);
REGISTER_ENCDEC (LIBAMR_NB, libamr_nb);
REGISTER_ENCDEC (LIBAMR_WB, libamr_wb);
REGISTER_ENCDEC (LIBDIRAC, libdirac);
REGISTER_ENCODER (LIBFAAC, libfaac);
REGISTER_DECODER (LIBFAAD, libfaad);
REGISTER_ENCDEC (LIBGSM, libgsm);

44
libavcodec/libdirac.h
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@ -0,0 +1,44 @@
/*
* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libdirac.h
* data structures common to libdiracenc.c and libdiracdec.c
*/
#ifndef FFMPEG_LIBDIRAC_H
#define FFMPEG_LIBDIRAC_H
#include "avcodec.h"
#include <libdirac_common/dirac_types.h>
/**
* Table providing a Dirac chroma format to FFmpeg pixel format mapping.
*/
static const struct {
enum PixelFormat ff_pix_fmt;
dirac_chroma_t dirac_pix_fmt;
} ffmpeg_dirac_pixel_format_map[] = {
{ PIX_FMT_YUV420P, format420 },
{ PIX_FMT_YUV422P, format422 },
{ PIX_FMT_YUV444P, format444 },
};
#endif /* FFMPEG_LIBDIRAC_H */

208
libavcodec/libdiracdec.c
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@ -0,0 +1,208 @@
/*
* Dirac decoder support via libdirac library
* Copyright (c) 2005 BBC, Andrew Kennedy <dirac at rd dot bbc dot co dot uk>
* Copyright (c) 2006-2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libdiracdec.c
* Dirac decoder support via libdirac library; more details about the Dirac
* project can be found at http://dirac.sourceforge.net/.
* The libdirac_decoder library implements Dirac specification version 2.2
* (http://dirac.sourceforge.net/specification.html).
*/
#include "libdirac.h"
#undef NDEBUG
#include <assert.h>
#include <libdirac_decoder/dirac_parser.h>
/** contains a single frame returned from Dirac */
typedef struct FfmpegDiracDecoderParams
{
/** decoder handle */
dirac_decoder_t* p_decoder;
/** buffer to hold decoded frame */
unsigned char* p_out_frame_buf;
} FfmpegDiracDecoderParams;
/**
* returns FFmpeg chroma format
*/
static enum PixelFormat GetFfmpegChromaFormat(dirac_chroma_t dirac_pix_fmt)
{
int num_formats = sizeof(ffmpeg_dirac_pixel_format_map) /
sizeof(ffmpeg_dirac_pixel_format_map[0]);
int idx;
for (idx = 0; idx < num_formats; ++idx) {
if (ffmpeg_dirac_pixel_format_map[idx].dirac_pix_fmt == dirac_pix_fmt) {
return ffmpeg_dirac_pixel_format_map[idx].ff_pix_fmt;
}
}
return PIX_FMT_NONE;
}
static int libdirac_decode_init(AVCodecContext *avccontext)
{
FfmpegDiracDecoderParams *p_dirac_params = avccontext->priv_data ;
p_dirac_params->p_decoder = dirac_decoder_init(avccontext->debug);
if (!p_dirac_params->p_decoder)
return -1;
return 0 ;
}
static int libdirac_decode_frame(AVCodecContext *avccontext,
void *data, int *data_size,
const uint8_t *buf, int buf_size)
{
FfmpegDiracDecoderParams *p_dirac_params = avccontext->priv_data;
AVPicture *picture = data;
AVPicture pic;
int pict_size;
unsigned char *buffer[3];
*data_size = 0;
if (buf_size>0)
/* set data to decode into buffer */
dirac_buffer (p_dirac_params->p_decoder, buf, buf+buf_size);
while (1) {
/* parse data and process result */
DecoderState state = dirac_parse (p_dirac_params->p_decoder);
switch (state)
{
case STATE_BUFFER:
return buf_size;
case STATE_SEQUENCE:
{
/* tell FFmpeg about sequence details */
dirac_sourceparams_t *src_params =
&p_dirac_params->p_decoder->src_params;
if (avcodec_check_dimensions(avccontext, src_params->width,
src_params->height) < 0) {
av_log(avccontext, AV_LOG_ERROR, "Invalid dimensions (%dx%d)\n",
src_params->width, src_params->height);
avccontext->height = avccontext->width = 0;
return -1;
}
avccontext->height = src_params->height;
avccontext->width = src_params->width;
avccontext->pix_fmt = GetFfmpegChromaFormat(src_params->chroma);
if (avccontext->pix_fmt == PIX_FMT_NONE) {
av_log (avccontext, AV_LOG_ERROR,
"Dirac chroma format %d not supported currently\n",
src_params->chroma);
return -1;
}
avccontext->time_base.den = src_params->frame_rate.numerator;
avccontext->time_base.num = src_params->frame_rate.denominator;
/* calculate output dimensions */
avpicture_fill(&pic, NULL, avccontext->pix_fmt,
avccontext->width, avccontext->height);
pict_size = avpicture_get_size(avccontext->pix_fmt,
avccontext->width,
avccontext->height);
/* allocate output buffer */
if (p_dirac_params->p_out_frame_buf == NULL)
p_dirac_params->p_out_frame_buf = av_malloc (pict_size);
buffer[0] = p_dirac_params->p_out_frame_buf;
buffer[1] = p_dirac_params->p_out_frame_buf +
pic.linesize[0] * avccontext->height;
buffer[2] = buffer[1] +
pic.linesize[1] * src_params->chroma_height;
/* tell Dirac about output destination */
dirac_set_buf(p_dirac_params->p_decoder, buffer, NULL);
break;
}
case STATE_SEQUENCE_END:
break;
case STATE_PICTURE_AVAIL:
/* fill picture with current buffer data from Dirac */
avpicture_fill(picture, p_dirac_params->p_out_frame_buf,
avccontext->pix_fmt,
avccontext->width, avccontext->height);
*data_size = sizeof(AVPicture);
return buf_size;
case STATE_INVALID:
return -1;
default:
break;
}
}
return buf_size;
}
static int libdirac_decode_close(AVCodecContext *avccontext)
{
FfmpegDiracDecoderParams *p_dirac_params = avccontext->priv_data;
dirac_decoder_close (p_dirac_params->p_decoder);
av_freep(&p_dirac_params->p_out_frame_buf);
return 0 ;
}
static void libdirac_flush (AVCodecContext *avccontext)
{
/* Got a seek request. We will need free memory held in the private
* context and free the current Dirac decoder handle and then open
* a new decoder handle. */
libdirac_decode_close (avccontext);
libdirac_decode_init (avccontext);
return;
}
AVCodec libdirac_decoder = {
"libdirac",
CODEC_TYPE_VIDEO,
CODEC_ID_DIRAC,
sizeof(FfmpegDiracDecoderParams),
libdirac_decode_init,
NULL,
libdirac_decode_close,
libdirac_decode_frame,
CODEC_CAP_DELAY,
.flush = libdirac_flush
} ;

373
libavcodec/libdiracenc.c
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@ -0,0 +1,373 @@
/*
* Dirac encoding support via libdirac library
* Copyright (c) 2005 BBC, Andrew Kennedy <dirac at rd dot bbc dot co dot uk>
* Copyright (c) 2006-2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libdiracenc.c
* Dirac encoding support via libdirac library; more details about the
* Dirac project can be found at http://dirac.sourceforge.net/.
* The libdirac_encoder library implements Dirac specification version 2.2
* (http://dirac.sourceforge.net/specification.html).
*/
#include "libdirac_libschro.h"
#include "libdirac.h"
#undef NDEBUG
#include <assert.h>
#include <libdirac_encoder/dirac_encoder.h>
/** Dirac encoder private data */
typedef struct FfmpegDiracEncoderParams
{
/** Dirac encoder context */
dirac_encoder_context_t enc_ctx;
/** frame being encoded */
AVFrame picture;
/** frame size */
int frame_size;
/** Dirac encoder handle */
dirac_encoder_t* p_encoder;
/** input frame buffer */
unsigned char *p_in_frame_buf;
/** queue storing encoded frames */
FfmpegDiracSchroQueue enc_frame_queue;
/** end of sequence signalled by user, 0 - false, 1 - true */
int eos_signalled;
/** end of sequence returned by encoder, 0 - false, 1 - true */
int eos_pulled;
} FfmpegDiracEncoderParams;
/**
* Works out Dirac-compatible chroma format.
*/
static dirac_chroma_t GetDiracChromaFormat(enum PixelFormat ff_pix_fmt)
{
int num_formats = sizeof(ffmpeg_dirac_pixel_format_map) /
sizeof(ffmpeg_dirac_pixel_format_map[0]);
int idx;
for (idx = 0; idx < num_formats; ++idx) {
if (ffmpeg_dirac_pixel_format_map[idx].ff_pix_fmt == ff_pix_fmt) {
return ffmpeg_dirac_pixel_format_map[idx].dirac_pix_fmt;
}
}
return formatNK;
}
/**
* Dirac video preset table. Ensure that this tables matches up correctly
* with the ff_dirac_schro_video_format_info table in libdirac_libschro.c.
*/
static const VideoFormat ff_dirac_video_formats[]={
VIDEO_FORMAT_CUSTOM ,
VIDEO_FORMAT_QSIF525 ,
VIDEO_FORMAT_QCIF ,
VIDEO_FORMAT_SIF525 ,
VIDEO_FORMAT_CIF ,
VIDEO_FORMAT_4SIF525 ,
VIDEO_FORMAT_4CIF ,
VIDEO_FORMAT_SD_480I60 ,
VIDEO_FORMAT_SD_576I50 ,
VIDEO_FORMAT_HD_720P60 ,
VIDEO_FORMAT_HD_720P50 ,
VIDEO_FORMAT_HD_1080I60 ,
VIDEO_FORMAT_HD_1080I50 ,
VIDEO_FORMAT_HD_1080P60 ,
VIDEO_FORMAT_HD_1080P50 ,
VIDEO_FORMAT_DIGI_CINEMA_2K24 ,
VIDEO_FORMAT_DIGI_CINEMA_4K24 ,
};
/**
* Returns the video format preset matching the input video dimensions and
* time base.
*/
static VideoFormat GetDiracVideoFormatPreset (AVCodecContext *avccontext)
{
unsigned int num_formats = sizeof(ff_dirac_video_formats) /
sizeof(ff_dirac_video_formats[0]);
unsigned int idx = ff_dirac_schro_get_video_format_idx (avccontext);
return (idx < num_formats) ?
ff_dirac_video_formats[idx] : VIDEO_FORMAT_CUSTOM;
}
static int libdirac_encode_init(AVCodecContext *avccontext)
{
FfmpegDiracEncoderParams* p_dirac_params = avccontext->priv_data;
int no_local = 1;
int verbose = avccontext->debug;
VideoFormat preset;
/* get Dirac preset */
preset = GetDiracVideoFormatPreset(avccontext);
/* initialize the encoder context */
dirac_encoder_context_init (&(p_dirac_params->enc_ctx), preset);
p_dirac_params->enc_ctx.src_params.chroma =
GetDiracChromaFormat(avccontext->pix_fmt);
if (p_dirac_params->enc_ctx.src_params.chroma == formatNK) {
av_log (avccontext, AV_LOG_ERROR,
"Unsupported pixel format %d. This codec supports only "
"Planar YUV formats (yuv420p, yuv422p, yuv444p\n",
avccontext->pix_fmt);
return -1;
}
p_dirac_params->enc_ctx.src_params.frame_rate.numerator =
avccontext->time_base.den;
p_dirac_params->enc_ctx.src_params.frame_rate.denominator =
avccontext->time_base.num;
p_dirac_params->enc_ctx.src_params.width = avccontext->width;
p_dirac_params->enc_ctx.src_params.height = avccontext->height;
p_dirac_params->frame_size = avpicture_get_size(avccontext->pix_fmt,
avccontext->width,
avccontext->height);
avccontext->coded_frame = &p_dirac_params->picture;
if (no_local) {
p_dirac_params->enc_ctx.decode_flag = 0;
p_dirac_params->enc_ctx.instr_flag = 0;
} else {
p_dirac_params->enc_ctx.decode_flag = 1;
p_dirac_params->enc_ctx.instr_flag = 1;
}
/* Intra-only sequence */
if (avccontext->gop_size == 0 )
p_dirac_params->enc_ctx.enc_params.num_L1 = 0;
else
avccontext->has_b_frames = 1;
if (avccontext->flags & CODEC_FLAG_QSCALE) {
if (avccontext->global_quality != 0) {
p_dirac_params->enc_ctx.enc_params.qf =
avccontext->global_quality / (FF_QP2LAMBDA*10.0);
/* if it is not default bitrate then send target rate. */
if (avccontext->bit_rate >= 1000 &&
avccontext->bit_rate != 200000) {
p_dirac_params->enc_ctx.enc_params.trate =
avccontext->bit_rate / 1000;
}
} else
p_dirac_params->enc_ctx.enc_params.lossless = 1;
} else if (avccontext->bit_rate >= 1000)
p_dirac_params->enc_ctx.enc_params.trate = avccontext->bit_rate / 1000;
if ((preset > VIDEO_FORMAT_QCIF || preset < VIDEO_FORMAT_QSIF525) &&
avccontext->bit_rate == 200000) {
p_dirac_params->enc_ctx.enc_params.trate = 0;
}
if (avccontext->flags & CODEC_FLAG_INTERLACED_ME) {
/* all material can be coded as interlaced or progressive
* irrespective of the type of source material */
p_dirac_params->enc_ctx.enc_params.picture_coding_mode = 1;
}
p_dirac_params->p_encoder = dirac_encoder_init (&(p_dirac_params->enc_ctx),
verbose );
if (!p_dirac_params->p_encoder) {
av_log(avccontext, AV_LOG_ERROR,
"Unrecoverable Error: dirac_encoder_init failed. ");
return EXIT_FAILURE;
}
/* allocate enough memory for the incoming data */
p_dirac_params->p_in_frame_buf = av_malloc(p_dirac_params->frame_size);
/* initialize the encoded frame queue */
ff_dirac_schro_queue_init(&p_dirac_params->enc_frame_queue);
return 0 ;
}
static void DiracFreeFrame (void *data)
{
FfmpegDiracSchroEncodedFrame *enc_frame = data;
av_freep (&(enc_frame->p_encbuf));
av_free(enc_frame);
}
static int libdirac_encode_frame(AVCodecContext *avccontext,
unsigned char *frame,
int buf_size, void *data)
{
int enc_size = 0;
dirac_encoder_state_t state;
FfmpegDiracEncoderParams* p_dirac_params = avccontext->priv_data;
FfmpegDiracSchroEncodedFrame* p_frame_output = NULL;
FfmpegDiracSchroEncodedFrame* p_next_output_frame = NULL;
int go = 1;
if (data == NULL) {
/* push end of sequence if not already signalled */
if (!p_dirac_params->eos_signalled) {
dirac_encoder_end_sequence( p_dirac_params->p_encoder );
p_dirac_params->eos_signalled = 1;
}
} else {
/* Allocate frame data to Dirac input buffer.
* Input line size may differ from what the codec supports,
* especially when transcoding from one format to another.
* So use avpicture_layout to copy the frame. */
avpicture_layout ((AVPicture *)data, avccontext->pix_fmt,
avccontext->width, avccontext->height,
p_dirac_params->p_in_frame_buf,
p_dirac_params->frame_size);
/* load next frame */
if (dirac_encoder_load (p_dirac_params->p_encoder,
p_dirac_params->p_in_frame_buf,
p_dirac_params->frame_size ) < 0) {
av_log(avccontext, AV_LOG_ERROR, "Unrecoverable Encoder Error."
" dirac_encoder_load failed...\n");
return -1;
}
}
if (p_dirac_params->eos_pulled)
go = 0;
while(go) {
p_dirac_params->p_encoder->enc_buf.buffer = frame;
p_dirac_params->p_encoder->enc_buf.size = buf_size;
/* process frame */
state = dirac_encoder_output ( p_dirac_params->p_encoder );
switch (state)
{
case ENC_STATE_AVAIL:
case ENC_STATE_EOS:
assert (p_dirac_params->p_encoder->enc_buf.size > 0);
/* create output frame */
p_frame_output = av_mallocz(sizeof(FfmpegDiracSchroEncodedFrame));
/* set output data */
p_frame_output->p_encbuf =
av_malloc(p_dirac_params->p_encoder->enc_buf.size);
memcpy(p_frame_output->p_encbuf,
p_dirac_params->p_encoder->enc_buf.buffer,
p_dirac_params->p_encoder->enc_buf.size);
p_frame_output->size = p_dirac_params->p_encoder->enc_buf.size;
p_frame_output->frame_num =
p_dirac_params->p_encoder->enc_pparams.pnum;
if (p_dirac_params->p_encoder->enc_pparams.ptype == INTRA_PICTURE &&
p_dirac_params->p_encoder->enc_pparams.rtype == REFERENCE_PICTURE)
p_frame_output->key_frame = 1;
ff_dirac_schro_queue_push_back (&p_dirac_params->enc_frame_queue,
p_frame_output);
if (state == ENC_STATE_EOS) {
p_dirac_params->eos_pulled = 1;
go = 0;
}
break;
case ENC_STATE_BUFFER:
go = 0;
break;
case ENC_STATE_INVALID:
av_log(avccontext, AV_LOG_ERROR,
"Unrecoverable Dirac Encoder Error. Quitting...\n");
return -1;
default:
av_log(avccontext, AV_LOG_ERROR, "Unknown Dirac Encoder state\n");
return -1;
}
}
/* copy 'next' frame in queue */
p_next_output_frame =
ff_dirac_schro_queue_pop(&p_dirac_params->enc_frame_queue);
if (p_next_output_frame == NULL)
return 0;
memcpy(frame, p_next_output_frame->p_encbuf, p_next_output_frame->size);
avccontext->coded_frame->key_frame = p_next_output_frame->key_frame;
/* Use the frame number of the encoded frame as the pts. It is OK to do
* so since Dirac is a constant framerate codec. It expects input to be
* of constant framerate. */
avccontext->coded_frame->pts = p_next_output_frame->frame_num;
enc_size = p_next_output_frame->size;
/* free frame */
DiracFreeFrame(p_next_output_frame);
return enc_size;
}
static int libdirac_encode_close(AVCodecContext *avccontext)
{
FfmpegDiracEncoderParams* p_dirac_params = avccontext->priv_data;
/* close the encoder */
dirac_encoder_close(p_dirac_params->p_encoder );
/* free data in the output frame queue */
ff_dirac_schro_queue_free(&p_dirac_params->enc_frame_queue,
DiracFreeFrame);
/* free the input frame buffer */
av_freep(&p_dirac_params->p_in_frame_buf);
return 0 ;
}
AVCodec libdirac_encoder = {
"libdirac",
CODEC_TYPE_VIDEO,
CODEC_ID_DIRAC,
sizeof(FfmpegDiracEncoderParams),
libdirac_encode_init,
libdirac_encode_frame,
libdirac_encode_close,
.capabilities= CODEC_CAP_DELAY,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, -1},
} ;
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