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;
/* */
p_ff_pic->opaque = NULL;
#if ! LIBAVCODEC_VERSION_CHECK(54, 34, 0, 79, 101)
p_ff_pic->pkt_pts = p_context->pkt ? p_context->pkt->pts : AV_NOPTS_VALUE;
#endif
#if LIBAVCODEC_VERSION_MAJOR < 54
p_ff_pic->age = 256*256*256*64;
#endif
if( p_sys->p_va )
return ffmpeg_va_GetFrameBuf(p_context, p_ff_pic);
if( !p_sys->b_direct_rendering )
return avcodec_default_get_buffer( p_context, p_ff_pic );
wait_mt( p_sys );
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so we need to check for direct rendering again. */
picture_t *p_pic = ffmpeg_dr_GetFrameBuf(p_context);
if (!p_pic) {
if( p_sys->i_direct_rendering_used != 0 )
{
msg_Warn( p_dec, "disabling direct rendering" );
p_sys->i_direct_rendering_used = 0;
}
post_mt( p_sys );
return avcodec_default_get_buffer( p_context, p_ff_pic );
}
if( p_sys->i_direct_rendering_used != 1 ) {
msg_Dbg( p_dec, "using direct rendering" );
p_sys->i_direct_rendering_used = 1;
}
p_context->draw_horiz_band = NULL;
post_mt( p_sys );
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;
return 0;
}
/**
* Callback used by libavcodec 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 lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
{
decoder_t *dec = ctx->opaque;
decoder_sys_t *sys = dec->p_sys;
picture_t *pic;
for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
{
frame->data[i] = NULL;
frame->linesize[i] = 0;
frame->buf[i] = NULL;
}
if (sys->p_va != NULL)
return lavc_va_GetFrame(ctx, frame, flags);
frame->opaque = NULL;
if (!sys->b_direct_rendering)
return avcodec_default_get_buffer2(ctx, frame, flags);
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so we need to check for direct rendering again. */
wait_mt(sys);
pic = lavc_dr_GetFrame(ctx, frame, flags);
if (pic == NULL)
{
if (sys->i_direct_rendering_used != 0)
{
msg_Warn(dec, "disabling direct rendering");
sys->i_direct_rendering_used = 0;
}
post_mt(sys);
return avcodec_default_get_buffer2(ctx, frame, flags);
}
if (sys->i_direct_rendering_used != 1)
{
msg_Dbg(dec, "enabling direct rendering");
sys->i_direct_rendering_used = 1;
}
post_mt(sys);
frame->opaque = pic;
static_assert(PICTURE_PLANE_MAX <= AV_NUM_DATA_POINTERS, "Oops!");
for (unsigned i = 0; i < PICTURE_PLANE_MAX; i++)
{
frame->data[i] = pic->p[i].p_pixels;
frame->linesize[i] = pic->p[i].i_pitch;
}
return 0;
}
/**
* Callback used by libavcodec 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 lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags)
{
decoder_t *dec = ctx->opaque;
decoder_sys_t *sys = dec->p_sys;
picture_t *pic;
for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++)
{
frame->data[i] = NULL;
frame->linesize[i] = 0;
frame->buf[i] = NULL;
}
frame->opaque = NULL;
wait_mt(sys);
if (sys->p_va != NULL)
{ /* TODO: Move this to get_format(). We are screwed if it fails here. */
if (vlc_va_Setup(sys->p_va, ctx, &dec->fmt_out.video.i_chroma))
{
post_mt(sys);
msg_Err(dec, "hardware acceleration setup failed");
return -1;
}
}
else if (!sys->b_direct_rendering)
{
post_mt(sys);
return avcodec_default_get_buffer2(ctx, frame, flags);
}
/* The semaphore protects updates to fmt_out */
pic = ffmpeg_NewPictBuf(dec, ctx);
post_mt(sys);
if (pic == NULL)
return -1;
if (sys->p_va != NULL)
return lavc_va_GetFrame(ctx, frame, pic);
/* Some codecs set pix_fmt only after the 1st frame has been decoded,
* so we need to check for direct rendering again. */
int ret = lavc_dr_GetFrame(ctx, frame, pic);
if (ret)
ret = avcodec_default_get_buffer2(ctx, frame, flags);
return ret;
}
/*****************************************************************************
* EndVideo: decoder destruction
*****************************************************************************
* This function is called when the thread ends after a successful
* initialization.
*****************************************************************************/
void EndVideoDec( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
post_mt( p_sys );
/* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
if( p_sys->p_context->codec )
avcodec_flush_buffers( p_sys->p_context );
wait_mt( p_sys );
ffmpeg_CloseCodec( p_dec );
if( p_sys->p_va )
vlc_va_Delete( p_sys->p_va, p_sys->p_context );
vlc_sem_destroy( &p_sys->sem_mt );
}
/*****************************************************************************
* DecodeVideo: Called to decode one or more frames
*****************************************************************************/
picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
AVCodecContext *p_context = p_sys->p_context;
int b_drawpicture;
int b_null_size = false;
block_t *p_block;
if( !pp_block || !*pp_block )
return NULL;
if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
{
ffmpeg_InitCodec( p_dec );
if( p_sys->b_delayed_open )
{
if( ffmpeg_OpenCodec( p_dec ) )
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
}
}
p_block = *pp_block;
if( p_sys->b_delayed_open )
{
block_Release( p_block );
return NULL;
}
if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
p_sys->i_late_frames = 0;
if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
avcodec_flush_buffers( p_context );
block_Release( p_block );
return NULL;
}
if( p_block->i_flags & BLOCK_FLAG_PREROLL )
{
/* Do not care about late frames when prerolling
* TODO avoid decoding of non reference frame
* (ie all B except for H264 where it depends only on nal_ref_idc) */
p_sys->i_late_frames = 0;
}
if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
(mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
{
if( p_sys->i_pts > VLC_TS_INVALID )
{
msg_Err( p_dec, "more than 5 seconds of late video -> "
"dropping frame (computer too slow ?)" );
p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
}
block_Release( p_block );
p_sys->i_late_frames--;
return NULL;
}
/* A good idea could be to decode all I pictures and see for the other */
if( !p_dec->b_pace_control &&
p_sys->b_hurry_up &&
(p_sys->i_late_frames > 4) )
{
b_drawpicture = 0;
if( p_sys->i_late_frames < 12 )
{
p_context->skip_frame =
(p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
AVDISCARD_BIDIR : p_sys->i_skip_frame;
}
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 );
return NULL;
}
}
else
{
if( p_sys->b_hurry_up )
p_context->skip_frame = p_sys->i_skip_frame;
if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
b_drawpicture = 1;
else
b_drawpicture = 0;
}
if( p_context->width <= 0 || p_context->height <= 0 )
{
if( p_sys->b_hurry_up )
p_context->skip_frame = p_sys->i_skip_frame;
b_null_size = true;
}
else if( !b_drawpicture )
{
/* It creates broken picture
* FIXME either our parser or ffmpeg is broken */
#if 0
if( p_sys->b_hurry_up )
p_context->skip_frame = __MAX( p_context->skip_frame,
AVDISCARD_NONREF );
#endif
}
/*
* Do the actual decoding now */
/* Don't forget that ffmpeg requires a little more bytes
* that the real frame size */
if( p_block->i_buffer > 0 )
{
p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
p_block = block_Realloc( p_block, 0,
p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
if( !p_block )
return NULL;
p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
*pp_block = p_block;
memset( p_block->p_buffer + p_block->i_buffer, 0,
FF_INPUT_BUFFER_PADDING_SIZE );
}
while( p_block->i_buffer > 0 || p_sys->b_flush )
{
int i_used, b_gotpicture;
picture_t *p_pic;
/* Set the PTS/DTS in the context reordered_opaque field */
if( p_block->i_pts > VLC_TS_INVALID )
p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
else if( p_block->i_dts > VLC_TS_INVALID )
p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
else
p_context->reordered_opaque = INT64_MIN;
p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
/* Make sure we don't reuse the same timestamps twice */
p_block->i_pts =
p_block->i_dts = VLC_TS_INVALID;
post_mt( p_sys );
i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
&b_gotpicture,
p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
if( b_null_size && !p_sys->b_flush &&
p_context->width > 0 && p_context->height > 0 )
{
/* Reparse it to not drop the I frame */
b_null_size = false;
if( p_sys->b_hurry_up )
p_context->skip_frame = p_sys->i_skip_frame;
i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
&b_gotpicture, p_block->p_buffer,
p_block->i_buffer );
}
wait_mt( p_sys );
if( p_sys->b_flush )
p_sys->b_first_frame = true;
if( p_block->i_buffer <= 0 )
p_sys->b_flush = false;
if( i_used < 0 )
{
if( b_drawpicture )
msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
p_block->i_buffer );
block_Release( p_block );
return NULL;
}
else if( i_used > p_block->i_buffer ||
p_context->thread_count > 1 )
{
i_used = p_block->i_buffer;
}
/* Consumed bytes */
p_block->i_buffer -= i_used;
p_block->p_buffer += i_used;
/* Nothing to display */
if( !b_gotpicture )
{
if( i_used == 0 ) break;
continue;
}
/* Compute the PTS */
mtime_t i_pts = VLC_TS_INVALID;
if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
{
mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
if( b_dts )
{
if( !p_context->has_b_frames ||
!p_sys->b_has_b_frames ||
!p_sys->p_ff_pic->reference ||
p_sys->i_pts <= VLC_TS_INVALID )
i_pts = i_ts;
}
else
{
i_pts = i_ts;
}
}
if( i_pts <= VLC_TS_INVALID )
i_pts = p_sys->i_pts;
/* Interpolate the next PTS */
if( i_pts > VLC_TS_INVALID )
p_sys->i_pts = i_pts;
if( p_sys->i_pts > VLC_TS_INVALID )
{
/* interpolate the next PTS */
if( p_dec->fmt_in.video.i_frame_rate > 0 &&
p_dec->fmt_in.video.i_frame_rate_base > 0 )
{
p_sys->i_pts += INT64_C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
p_dec->fmt_in.video.i_frame_rate_base /
(2 * p_dec->fmt_in.video.i_frame_rate);
}
else if( p_context->time_base.den > 0 )
{
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
int i_tick = p_context->ticks_per_frame;
if( i_tick <= 0 )
i_tick = 1;
#else
int i_tick = 1;
#endif
p_sys->i_pts += INT64_C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
i_tick * p_context->time_base.num /
(2 * p_context->time_base.den);
}
}
/* Update frame late count (except when doing preroll) */
mtime_t i_display_date = 0;
if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
if( i_display_date > 0 && i_display_date <= 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_va && !p_sys->p_ff_pic->linesize[0] ) )
continue;
if( !p_sys->p_ff_pic->opaque )
{
/* Get a new picture */
p_pic = ffmpeg_NewPictBuf( p_dec, 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;
decoder_LinkPicture( p_dec, p_pic );
}
/* 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 = true;
}
if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
{
/* Fetch again the aspect ratio in case it changed */
p_dec->fmt_out.video.i_sar_num
= p_context->sample_aspect_ratio.num;
p_dec->fmt_out.video.i_sar_den
= p_context->sample_aspect_ratio.den;
if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
{
p_dec->fmt_out.video.i_sar_num = 1;
p_dec->fmt_out.video.i_sar_den = 1;
}
}
/* Send decoded frame to vout */
if( i_pts > VLC_TS_INVALID)
{
p_pic->date = i_pts;
if( p_sys->b_first_frame )
{
/* Hack to force display of still pictures */
p_sys->b_first_frame = false;
p_pic->b_force = true;
}
p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
p_pic->i_qstride = p_sys->p_ff_pic->qstride;
int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
p_pic->i_qstride * i_mb_h );
switch( p_sys->p_ff_pic->qscale_type )
{
case FF_QSCALE_TYPE_MPEG1:
p_pic->i_qtype = QTYPE_MPEG1;
break;
case FF_QSCALE_TYPE_MPEG2:
p_pic->i_qtype = QTYPE_MPEG2;
break;
case FF_QSCALE_TYPE_H264:
p_pic->i_qtype = QTYPE_H264;
break;
}
return p_pic;
}
else
{
decoder_DeletePicture( p_dec, p_pic );
}
}
/*****************************************************************************
* DecodeVideo: Called to decode one or more frames
*****************************************************************************/
picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
AVCodecContext *p_context = p_sys->p_context;
int b_drawpicture;
block_t *p_block;
if( !pp_block )
return NULL;
if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
{
ffmpeg_InitCodec( p_dec );
if( p_sys->b_delayed_open )
{
if( ffmpeg_OpenCodec( p_dec ) )
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
}
}
p_block = *pp_block;
if(!p_block && !(p_sys->p_codec->capabilities & CODEC_CAP_DELAY) )
return NULL;
if( p_sys->b_delayed_open )
{
if( p_block )
block_Release( p_block );
return NULL;
}
if( p_block)
{
if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
p_sys->i_late_frames = 0;
post_mt( p_sys );
if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
avcodec_flush_buffers( p_context );
wait_mt( p_sys );
block_Release( p_block );
return NULL;
}
if( p_block->i_flags & BLOCK_FLAG_PREROLL )
{
/* Do not care about late frames when prerolling
* TODO avoid decoding of non reference frame
* (ie all B except for H264 where it depends only on nal_ref_idc) */
p_sys->i_late_frames = 0;
}
}
if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
(mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
{
if( p_sys->i_pts > VLC_TS_INVALID )
{
p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
}
if( p_block )
block_Release( p_block );
p_sys->i_late_frames--;
msg_Err( p_dec, "more than 5 seconds of late video -> "
"dropping frame (computer too slow ?)" );
return NULL;
}
/* A good idea could be to decode all I pictures and see for the other */
if( !p_dec->b_pace_control &&
p_sys->b_hurry_up &&
(p_sys->i_late_frames > 4) )
{
b_drawpicture = 0;
if( p_sys->i_late_frames < 12 )
{
p_context->skip_frame =
(p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
AVDISCARD_NONREF : p_sys->i_skip_frame;
}
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 */
if( p_block )
block_Release( p_block );
msg_Warn( p_dec, "More than 4 late frames, dropping frame" );
return NULL;
}
}
else
{
if( p_sys->b_hurry_up )
p_context->skip_frame = p_sys->i_skip_frame;
if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
b_drawpicture = 1;
else
b_drawpicture = 0;
}
if( p_context->width <= 0 || p_context->height <= 0 )
{
if( p_sys->b_hurry_up )
p_context->skip_frame = p_sys->i_skip_frame;
}
else if( !b_drawpicture )
{
/* It creates broken picture
* FIXME either our parser or ffmpeg is broken */
#if 0
if( p_sys->b_hurry_up )
p_context->skip_frame = __MAX( p_context->skip_frame,
AVDISCARD_NONREF );
#endif
}
/*
* Do the actual decoding now */
/* Don't forget that libavcodec requires a little more bytes
* that the real frame size */
if( p_block && p_block->i_buffer > 0 )
{
p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
p_block = block_Realloc( p_block, 0,
p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
if( !p_block )
return NULL;
p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
*pp_block = p_block;
memset( p_block->p_buffer + p_block->i_buffer, 0,
FF_INPUT_BUFFER_PADDING_SIZE );
}
while( !p_block || p_block->i_buffer > 0 || p_sys->b_flush )
{
int i_used, b_gotpicture;
picture_t *p_pic;
AVPacket pkt;
post_mt( p_sys );
av_init_packet( &pkt );
if( p_block )
{
pkt.data = p_block->p_buffer;
pkt.size = p_block->i_buffer;
pkt.pts = p_block->i_pts;
pkt.dts = p_block->i_dts;
}
else
{
/* Return delayed frames if codec has CODEC_CAP_DELAY */
pkt.data = NULL;
pkt.size = 0;
}
#if LIBAVCODEC_VERSION_MAJOR >= 54
if( !p_sys->palette_sent )
{
uint8_t *pal = av_packet_new_side_data(&pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
if (pal) {
memcpy(pal, p_dec->fmt_in.video.p_palette->palette, AVPALETTE_SIZE);
p_sys->palette_sent = true;
}
}
#endif
/* Make sure we don't reuse the same timestamps twice */
if( p_block )
{
p_block->i_pts =
p_block->i_dts = VLC_TS_INVALID;
}
i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
&b_gotpicture, &pkt );
wait_mt( p_sys );
if( p_sys->b_flush )
p_sys->b_first_frame = true;
if( p_block )
{
if( p_block->i_buffer <= 0 )
p_sys->b_flush = false;
if( i_used < 0 )
{
if( b_drawpicture )
msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
p_block->i_buffer );
block_Release( p_block );
return NULL;
}
else if( (unsigned)i_used > p_block->i_buffer ||
p_context->thread_count > 1 )
{
i_used = p_block->i_buffer;
}
/* Consumed bytes */
p_block->i_buffer -= i_used;
p_block->p_buffer += i_used;
}
/* Nothing to display */
if( !b_gotpicture )
{
if( i_used == 0 ) break;
continue;
}
/* Sanity check (seems to be needed for some streams) */
if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
{
p_sys->b_has_b_frames = true;
}
/* Compute the PTS */
mtime_t i_pts =
p_sys->p_ff_pic->pkt_pts;
if (i_pts <= VLC_TS_INVALID)
i_pts = p_sys->p_ff_pic->pkt_dts;
if( i_pts <= VLC_TS_INVALID )
i_pts = p_sys->i_pts;
/* Interpolate the next PTS */
if( i_pts > VLC_TS_INVALID )
p_sys->i_pts = i_pts;
if( p_sys->i_pts > VLC_TS_INVALID )
{
/* interpolate the next PTS */
if( p_dec->fmt_in.video.i_frame_rate > 0 &&
p_dec->fmt_in.video.i_frame_rate_base > 0 )
{
p_sys->i_pts += INT64_C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
p_dec->fmt_in.video.i_frame_rate_base /
(2 * p_dec->fmt_in.video.i_frame_rate);
}
else if( p_context->time_base.den > 0 )
{
int i_tick = p_context->ticks_per_frame;
if( i_tick <= 0 )
i_tick = 1;
p_sys->i_pts += INT64_C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
i_tick * p_context->time_base.num /
(2 * p_context->time_base.den);
}
}
/* Update frame late count (except when doing preroll) */
mtime_t i_display_date = 0;
if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
if( i_display_date > 0 && i_display_date <= 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_va && !p_sys->p_ff_pic->linesize[0] ) )
continue;
if( p_sys->p_va != NULL || p_sys->p_ff_pic->opaque == NULL )
{
/* Get a new picture */
p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
if( !p_pic )
{
if( p_block )
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;
decoder_LinkPicture( p_dec, p_pic );
}
if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
{
/* Fetch again the aspect ratio in case it changed */
p_dec->fmt_out.video.i_sar_num
= p_context->sample_aspect_ratio.num;
p_dec->fmt_out.video.i_sar_den
= p_context->sample_aspect_ratio.den;
if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
{
p_dec->fmt_out.video.i_sar_num = 1;
p_dec->fmt_out.video.i_sar_den = 1;
}
}
/* Send decoded frame to vout */
if( i_pts > VLC_TS_INVALID)
{
p_pic->date = i_pts;
if( p_sys->b_first_frame )
{
/* Hack to force display of still pictures */
p_sys->b_first_frame = false;
p_pic->b_force = true;
}
p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
return p_pic;
}
else
{
decoder_DeletePicture( p_dec, p_pic );
}
}
if( p_block )
block_Release( p_block );
return NULL;
}