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vlc/modules/codec/ffmpeg/video.c

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/*****************************************************************************
* video.c: video decoder using the ffmpeg library
*****************************************************************************
* Copyright (C) 1999-2001 VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@netcourrier.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <vlc/vlc.h>
#include <vlc/decoder.h>
/* ffmpeg header */
#ifdef HAVE_FFMPEG_AVCODEC_H
# include <ffmpeg/avcodec.h>
#else
# include <avcodec.h>
#endif
#include "ffmpeg.h"
/*****************************************************************************
* decoder_sys_t : decoder descriptor
*****************************************************************************/
struct decoder_sys_t
{
/* Common part between video and audio decoder */
int i_cat;
int i_codec_id;
char *psz_namecodec;
AVCodecContext *p_context;
AVCodec *p_codec;
/* Video decoder specific part */
mtime_t input_pts;
mtime_t input_dts;
mtime_t i_pts;
AVFrame *p_ff_pic;
BITMAPINFOHEADER *p_format;
/* for frame skipping algo */
int b_hurry_up;
int i_frame_skip;
/* how many decoded frames are late */
int i_late_frames;
mtime_t i_late_frames_start;
/* for direct rendering */
int b_direct_rendering;
vlc_bool_t b_has_b_frames;
int i_buffer_orig, i_buffer;
char *p_buffer_orig, *p_buffer;
/* Postprocessing handle */
void *p_pp;
vlc_bool_t b_pp;
vlc_bool_t b_pp_async;
vlc_bool_t b_pp_init;
};
/* FIXME (dummy palette for now) */
static AVPaletteControl palette_control;
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
/*****************************************************************************
* Local Functions
*****************************************************************************/
static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
{
switch( i_ff_chroma )
{
case PIX_FMT_YUV420P:
return VLC_FOURCC('I','4','2','0');
case PIX_FMT_YUV422P:
return VLC_FOURCC('I','4','2','2');
case PIX_FMT_YUV444P:
return VLC_FOURCC('I','4','4','4');
case PIX_FMT_YUV422:
return VLC_FOURCC('Y','U','Y','2');
case PIX_FMT_RGB555:
return VLC_FOURCC('R','V','1','5');
case PIX_FMT_RGB565:
return VLC_FOURCC('R','V','1','6');
case PIX_FMT_RGB24:
return VLC_FOURCC('R','V','2','4');
case PIX_FMT_RGBA32:
return VLC_FOURCC('R','V','3','2');
case PIX_FMT_GRAY8:
return VLC_FOURCC('G','R','E','Y');
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
case PIX_FMT_BGR24:
default:
return 0;
}
}
/* Returns a new picture buffer */
static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
AVCodecContext *p_context )
{
decoder_sys_t *p_sys = p_dec->p_sys;
picture_t *p_pic;
p_dec->fmt_out.video.i_width = p_context->width;
p_dec->fmt_out.video.i_height = p_context->height;
p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
if( !p_context->width || !p_context->height )
{
return NULL; /* invalid display size */
}
if( !p_dec->fmt_out.i_codec )
{
/* we make conversion if possible*/
p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
}
/* If an aspect-ratio was specified in the input format then force it */
if( p_dec->fmt_in.video.i_aspect )
{
p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
}
else
{
#if LIBAVCODEC_BUILD >= 4687
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
p_context->width / p_context->height );
#else
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
#endif
if( p_dec->fmt_out.video.i_aspect == 0 )
{
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
}
}
p_pic = p_dec->pf_vout_buffer_new( p_dec );
#ifdef LIBAVCODEC_PP
if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
{
E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
p_context->height, p_context->pix_fmt );
p_sys->b_pp_init = VLC_TRUE;
}
#endif
return p_pic;
}
/*****************************************************************************
* InitVideo: initialize the video decoder
*****************************************************************************
* the ffmpeg codec will be opened, some memory allocated. The vout is not yet
* opened (done after the first decoded frame).
*****************************************************************************/
int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
AVCodec *p_codec, int i_codec_id, char *psz_namecodec )
{
decoder_sys_t *p_sys;
vlc_value_t lockval;
vlc_value_t val;
int i_tmp;
var_Get( p_dec->p_libvlc, "avcodec", &lockval );
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys =
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
{
msg_Err( p_dec, "out of memory" );
return VLC_EGENERIC;
}
p_dec->p_sys->p_context = p_context;
p_dec->p_sys->p_codec = p_codec;
p_dec->p_sys->i_codec_id = i_codec_id;
p_dec->p_sys->psz_namecodec = psz_namecodec;
p_sys->p_ff_pic = avcodec_alloc_frame();
/* ***** Fill p_context with init values ***** */
p_sys->p_context->width = p_dec->fmt_in.video.i_width;
p_sys->p_context->height = p_dec->fmt_in.video.i_height;
p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
/* ***** Get configuration of ffmpeg plugin ***** */
i_tmp = config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
p_sys->p_context->workaround_bugs = __MAX( __MIN( i_tmp, 99 ), 0 );
i_tmp = config_GetInt( p_dec, "ffmpeg-error-resilience" );
p_sys->p_context->error_resilience = __MAX( __MIN( i_tmp, 99 ), -1 );
var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_dec, "grayscale", &val );
if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
/* ***** ffmpeg frame skipping ***** */
var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_dec, "ffmpeg-hurry-up", &val );
p_sys->b_hurry_up = val.b_bool;
/* ***** ffmpeg direct rendering ***** */
p_sys->b_direct_rendering = 0;
var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
var_Get( p_dec, "ffmpeg-dr", &val );
if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) &&
/* Apparently direct rendering doesn't work with YUV422P */
p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
p_sys->i_codec_id != CODEC_ID_H264 && /* H264 use too many reference frames */
!(p_sys->p_context->width % 16) && !(p_sys->p_context->height % 16) )
{
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so we need to do another check in ffmpeg_GetFrameBuf() */
p_sys->b_direct_rendering = 1;
}
#ifdef LIBAVCODEC_PP
p_sys->p_pp = NULL;
p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
#endif
/* ffmpeg doesn't properly release old pictures when frames are skipped */
//if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
if( p_sys->b_direct_rendering )
{
msg_Dbg( p_dec, "using direct rendering" );
p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
}
/* Always use our get_buffer wrapper so we can calculate the
* PTS correctly */
p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
p_sys->p_context->opaque = p_dec;
/* ***** init this codec with special data ***** */
if( p_dec->fmt_in.i_extra )
{
int i_size = p_dec->fmt_in.i_extra;
if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
{
uint8_t *p;
p_sys->p_context->extradata_size = i_size + 12;
p = p_sys->p_context->extradata =
malloc( p_sys->p_context->extradata_size );
memcpy( &p[0], "SVQ3", 4 );
memset( &p[4], 0, 8 );
memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
/* Now remove all atoms before the SMI one */
if( p_sys->p_context->extradata_size > 0x5a &&
strncmp( &p[0x56], "SMI ", 4 ) )
{
uint8_t *psz = &p[0x52];
while( psz < &p[p_sys->p_context->extradata_size - 8] )
{
int i_size = GetDWBE( psz );
if( i_size <= 1 )
{
/* FIXME handle 1 as long size */
break;
}
if( !strncmp( &psz[4], "SMI ", 4 ) )
{
memmove( &p[0x52], psz,
&p[p_sys->p_context->extradata_size] - psz );
break;
}
psz += i_size;
}
}
}
else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
{
if( p_dec->fmt_in.i_extra == 8 )
{
p_sys->p_context->extradata_size = 8;
p_sys->p_context->extradata = malloc( 8 );
memcpy( p_sys->p_context->extradata,
p_dec->fmt_in.p_extra,
p_dec->fmt_in.i_extra );
p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
p_sys->p_context->sub_id );
}
}
else
{
p_sys->p_context->extradata_size = i_size;
p_sys->p_context->extradata =
malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
memcpy( p_sys->p_context->extradata,
p_dec->fmt_in.p_extra, i_size );
memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
0, FF_INPUT_BUFFER_PADDING_SIZE );
}
}
/* ***** misc init ***** */
p_sys->input_pts = p_sys->input_dts = 0;
p_sys->i_pts = 0;
p_sys->b_has_b_frames = VLC_FALSE;
p_sys->i_late_frames = 0;
p_sys->i_buffer = 0;
p_sys->i_buffer_orig = 1;
p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer );
/* Set output properties */
p_dec->fmt_out.i_cat = VIDEO_ES;
p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
/* Setup palette */
#if LIBAVCODEC_BUILD >= 4688
if( p_dec->fmt_in.video.p_palette )
p_sys->p_context->palctrl =
(AVPaletteControl *)p_dec->fmt_in.video.p_palette;
else
p_sys->p_context->palctrl = &palette_control;
#endif
/* ***** Open the codec ***** */
vlc_mutex_lock( lockval.p_address );
if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
{
vlc_mutex_unlock( lockval.p_address );
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
return VLC_EGENERIC;
}
vlc_mutex_unlock( lockval.p_address );
msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
return VLC_SUCCESS;
}
/*****************************************************************************
* DecodeVideo: Called to decode one or more frames
*****************************************************************************/
picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
int b_drawpicture;
block_t *p_block;
if( !pp_block || !*pp_block ) return NULL;
p_block = *pp_block;
if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
{
p_sys->i_buffer = 0;
p_sys->i_pts = 0; /* To make sure we recover properly */
p_sys->input_pts = p_sys->input_dts = 0;
p_sys->i_late_frames = 0;
block_Release( p_block );
return NULL;
}
if( p_sys->i_late_frames > 0 &&
mdate() - p_sys->i_late_frames_start > I64C(5000000) )
{
if( p_sys->i_pts )
{
msg_Err( p_dec, "more than 5 seconds of late video -> "
"dropping frame (computer too slow ?)" );
p_sys->i_pts = 0; /* To make sure we recover properly */
}
block_Release( p_block );
p_sys->i_late_frames--;
return NULL;
}
if( p_block->i_pts > 0 || p_block->i_dts > 0 )
{
p_sys->input_pts = p_block->i_pts;
p_sys->input_dts = p_block->i_dts;
/* Make sure we don't reuse the same timestamps twice */
p_block->i_pts = p_block->i_dts = 0;
}
/* TODO implement it in a better way */
/* A good idea could be to decode all I pictures and see for the other */
if( p_sys->b_hurry_up && p_sys->i_late_frames > 4 )
{
b_drawpicture = 0;
if( p_sys->i_late_frames < 8 )
{
p_sys->p_context->hurry_up = 2;
}
else
{
/* picture too late, won't decode
* but break picture until a new I, and for mpeg4 ...*/
p_sys->i_late_frames--; /* needed else it will never be decrease */
block_Release( p_block );
p_sys->i_buffer = 0;
return NULL;
}
}
else
{
b_drawpicture = 1;
p_sys->p_context->hurry_up = 0;
}
if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
{
p_sys->p_context->hurry_up = 5;
}
/*
* Do the actual decoding now
*/
/* Check if post-processing was enabled */
p_sys->b_pp = p_sys->b_pp_async;
/* Don't forget that ffmpeg requires a little more bytes
* that the real frame size */
if( p_block->i_buffer > 0 )
{
p_sys->i_buffer = p_block->i_buffer;
if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
p_sys->i_buffer_orig )
{
free( p_sys->p_buffer_orig );
p_sys->i_buffer_orig =
p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
}
p_sys->p_buffer = p_sys->p_buffer_orig;
p_sys->i_buffer = p_block->i_buffer;
p_dec->p_vlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
p_block->i_buffer );
memset( p_sys->p_buffer + p_block->i_buffer, 0,
FF_INPUT_BUFFER_PADDING_SIZE );
p_block->i_buffer = 0;
}
while( p_sys->i_buffer > 0 )
{
int i_used, b_gotpicture;
picture_t *p_pic;
i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
&b_gotpicture,
p_sys->p_buffer, p_sys->i_buffer );
if( i_used < 0 )
{
msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
p_sys->i_buffer );
block_Release( p_block );
return NULL;
}
else if( i_used > p_sys->i_buffer )
{
i_used = p_sys->i_buffer;
}
/* Consumed bytes */
p_sys->i_buffer -= i_used;
p_sys->p_buffer += i_used;
/* Nothing to display */
if( !b_gotpicture )
{
if( i_used == 0 )
{
break;
}
continue;
}
/* Update frame late count*/
if( p_sys->i_pts && p_sys->i_pts <= mdate() )
{
p_sys->i_late_frames++;
if( p_sys->i_late_frames == 1 )
p_sys->i_late_frames_start = mdate();
}
else
{
p_sys->i_late_frames = 0;
}
if( !b_drawpicture || p_sys->p_ff_pic->linesize[0] == 0 )
{
/* Do not display the picture */
continue;
}
if( !p_sys->p_ff_pic->opaque )
{
/* Get a new picture */
p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
if( !p_pic )
{
block_Release( p_block );
return NULL;
}
/* Fill p_picture_t from AVVideoFrame and do chroma conversion
* if needed */
ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
}
else
{
p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
}
/* Set the PTS */
if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
/* Sanity check (seems to be needed for some streams ) */
if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
{
p_sys->b_has_b_frames = VLC_TRUE;
}
/* Send decoded frame to vout */
if( p_sys->i_pts )
{
p_pic->date = p_sys->i_pts;
/* interpolate the next PTS */
if( p_sys->p_context->frame_rate > 0 )
{
p_sys->i_pts += I64C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
p_sys->p_context->frame_rate_base /
(2 * p_sys->p_context->frame_rate);
}
return p_pic;
}
else
{
p_dec->pf_vout_buffer_del( p_dec, p_pic );
}
}
block_Release( p_block );
return NULL;
}
/*****************************************************************************
* EndVideo: decoder destruction
*****************************************************************************
* This function is called when the thread ends after a sucessful
* initialization.
*****************************************************************************/
void E_(EndVideoDec)( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
if( p_sys->p_ff_pic ) free( p_sys->p_ff_pic );
#ifdef LIBAVCODEC_PP
E_(ClosePostproc)( p_dec, p_sys->p_pp );
#endif
free( p_sys->p_buffer_orig );
}
/*****************************************************************************
* ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
* picture_t structure (when not in direct rendering mode).
*****************************************************************************/
static void ffmpeg_CopyPicture( decoder_t *p_dec,
picture_t *p_pic, AVFrame *p_ff_pic )
{
decoder_sys_t *p_sys = p_dec->p_sys;
if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
{
int i_plane, i_size, i_line;
uint8_t *p_dst, *p_src;
int i_src_stride, i_dst_stride;
#ifdef LIBAVCODEC_PP
if( p_sys->p_pp && p_sys->b_pp )
E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
else
#endif
for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
{
p_src = p_ff_pic->data[i_plane];
p_dst = p_pic->p[i_plane].p_pixels;
i_src_stride = p_ff_pic->linesize[i_plane];
i_dst_stride = p_pic->p[i_plane].i_pitch;
i_size = __MIN( i_src_stride, i_dst_stride );
for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
{
p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_size );
p_src += i_src_stride;
p_dst += i_dst_stride;
}
}
}
else
{
AVPicture dest_pic;
int i;
/* we need to convert to I420 */
switch( p_sys->p_context->pix_fmt )
{
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
case PIX_FMT_PAL8:
for( i = 0; i < p_pic->i_planes; i++ )
{
dest_pic.data[i] = p_pic->p[i].p_pixels;
dest_pic.linesize[i] = p_pic->p[i].i_pitch;
}
img_convert( &dest_pic, PIX_FMT_YUV420P,
(AVPicture *)p_ff_pic,
p_sys->p_context->pix_fmt,
p_sys->p_context->width,
p_sys->p_context->height );
break;
default:
msg_Err( p_dec, "don't know how to convert chroma %i",
p_sys->p_context->pix_fmt );
p_dec->b_error = 1;
break;
}
}
}
/*****************************************************************************
* ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
*****************************************************************************
* It is used for direct rendering as well as to get the right PTS for each
* decoded picture (even in indirect rendering mode).
*****************************************************************************/
static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
AVFrame *p_ff_pic )
{
decoder_t *p_dec = (decoder_t *)p_context->opaque;
decoder_sys_t *p_sys = p_dec->p_sys;
picture_t *p_pic;
/* Set picture PTS */
if( p_sys->input_pts )
{
p_ff_pic->pts = p_sys->input_pts;
}
else if( p_sys->input_dts )
{
/* Some demuxers only set the dts so let's try to find a useful
* timestamp from this */
if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
!p_ff_pic->reference || !p_sys->i_pts )
{
p_ff_pic->pts = p_sys->input_dts;
}
else p_ff_pic->pts = 0;
}
else p_ff_pic->pts = 0;
if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
{
p_sys->input_pts = p_sys->input_dts = 0;
}
p_ff_pic->opaque = 0;
/* Not much to do in indirect rendering mode */
if( !p_sys->b_direct_rendering || p_sys->b_pp )
{
return avcodec_default_get_buffer( p_context, p_ff_pic );
}
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so this check is necessary. */
if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
{
msg_Dbg( p_dec, "disabling direct rendering" );
p_sys->b_direct_rendering = 0;
return avcodec_default_get_buffer( p_context, p_ff_pic );
}
/* Get a new picture */
//p_sys->p_vout->render.b_allow_modify_pics = 0;
p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
if( !p_pic )
{
p_sys->b_direct_rendering = 0;
return avcodec_default_get_buffer( p_context, p_ff_pic );
}
p_sys->p_context->draw_horiz_band = NULL;
p_ff_pic->opaque = (void*)p_pic;
p_ff_pic->type = FF_BUFFER_TYPE_USER;
p_ff_pic->data[0] = p_pic->p[0].p_pixels;
p_ff_pic->data[1] = p_pic->p[1].p_pixels;
p_ff_pic->data[2] = p_pic->p[2].p_pixels;
p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
p_ff_pic->linesize[3] = 0;
if( p_ff_pic->reference != 0 )
{
p_dec->pf_picture_link( p_dec, p_pic );
}
/* FIXME what is that, should give good value */
p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
return 0;
}
static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
AVFrame *p_ff_pic )
{
decoder_t *p_dec = (decoder_t *)p_context->opaque;
picture_t *p_pic;
if( !p_ff_pic->opaque )
{
avcodec_default_release_buffer( p_context, p_ff_pic );
return;
}
p_pic = (picture_t*)p_ff_pic->opaque;
p_ff_pic->data[0] = NULL;
p_ff_pic->data[1] = NULL;
p_ff_pic->data[2] = NULL;
p_ff_pic->data[3] = NULL;
if( p_ff_pic->reference != 0 )
{
p_dec->pf_picture_unlink( p_dec, p_pic );
}
}