/*****************************************************************************
* 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 );
}
}
/*****************************************************************************
* 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 InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
{
decoder_sys_t *p_sys;
int i_val;
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
return VLC_ENOMEM;
p_codec->type = CODEC_TYPE_VIDEO;
p_context->codec_type = CODEC_TYPE_VIDEO;
p_context->codec_id = i_codec_id;
p_sys->p_context = p_context;
p_sys->p_codec = p_codec;
p_sys->i_codec_id = i_codec_id;
p_sys->psz_namecodec = psz_namecodec;
p_sys->p_ff_pic = avcodec_alloc_frame();
p_sys->b_delayed_open = true;
p_sys->p_va = NULL;
vlc_sem_init( &p_sys->sem_mt, 0 );
/* ***** Fill p_context with init values ***** */
p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
/* ***** Get configuration of ffmpeg plugin ***** */
p_sys->p_context->workaround_bugs =
var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
p_sys->p_context->error_recognition =
var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
if( var_CreateGetBool( p_dec, "grayscale" ) )
p_sys->p_context->flags |= CODEC_FLAG_GRAY;
i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
if( i_val ) p_sys->p_context->debug_mv = i_val;
i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
/* ***** ffmpeg frame skipping ***** */
p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
{
case -1:
p_sys->p_context->skip_frame = AVDISCARD_NONE;
break;
case 0:
p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
break;
case 1:
p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
break;
case 2:
p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
break;
case 3:
p_sys->p_context->skip_frame = AVDISCARD_ALL;
break;
default:
p_sys->p_context->skip_frame = AVDISCARD_NONE;
break;
}
p_sys->i_skip_frame = p_sys->p_context->skip_frame;
switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
{
case -1:
p_sys->p_context->skip_idct = AVDISCARD_NONE;
break;
case 0:
p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
break;
case 1:
p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
break;
case 2:
p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
break;
case 3:
p_sys->p_context->skip_idct = AVDISCARD_ALL;
break;
default:
p_sys->p_context->skip_idct = AVDISCARD_NONE;
break;
}
p_sys->i_skip_idct = p_sys->p_context->skip_idct;
/* ***** ffmpeg direct rendering ***** */
p_sys->b_direct_rendering = false;
p_sys->i_direct_rendering_used = -1;
if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
(p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
/* No idea why ... but this fixes flickering on some TSCC streams */
p_sys->i_codec_id != CODEC_ID_TSCC &&
!p_sys->p_context->debug_mv )
{
/* 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 = true;
}
/* ffmpeg doesn't properly release old pictures when frames are skipped */
//if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
if( p_sys->b_direct_rendering )
{
msg_Dbg( p_dec, "trying to use direct rendering" );
p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
}
else
{
msg_Dbg( p_dec, "direct rendering is disabled" );
}
/* 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->reget_buffer = ffmpeg_ReGetFrameBuf;
p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
p_sys->p_context->opaque = p_dec;
#ifdef HAVE_AVCODEC_MT
int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
if( i_thread_count <= 0 )
i_thread_count = vlc_GetCPUCount();
msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
p_sys->p_context->thread_count = i_thread_count;
#endif
#ifdef HAVE_AVCODEC_VA
const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
if( b_use_hw )
{
#ifdef HAVE_AVCODEC_MT
msg_Err( p_dec, "ffmpeg-hw is not compatible with ffmpeg-mt" );
#else
p_sys->p_context->get_format = ffmpeg_GetFormat;
#endif
}
#endif
/* ***** misc init ***** */
p_sys->i_pts = VLC_TS_INVALID;
p_sys->b_has_b_frames = false;
p_sys->b_first_frame = true;
p_sys->b_flush = false;
p_sys->i_late_frames = 0;
/* Set output properties */
p_dec->fmt_out.i_cat = VIDEO_ES;
if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
{
/* we are doomed. but not really, because most codecs set their pix_fmt later on */
p_dec->fmt_out.i_codec = VLC_CODEC_I420;
}
p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
/* Setup palette */
memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
if( p_dec->fmt_in.video.p_palette )
{
p_sys->palette.palette_changed = 1;
for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
{
union {
uint32_t u;
uint8_t a[4];
} c;
c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
p_sys->palette.palette[i] = c.u;
}
p_sys->p_context->palctrl = &p_sys->palette;
p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
if( p_dec->fmt_out.video.p_palette )
*p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
}
else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
{
p_sys->p_context->palctrl = &p_sys->palette;
}
/* ***** init this codec with special data ***** */
ffmpeg_InitCodec( p_dec );
/* ***** Open the codec ***** */
if( ffmpeg_OpenCodec( p_dec ) < 0 )
{
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
av_free( p_sys->p_ff_pic );
vlc_sem_destroy( &p_sys->sem_mt );
free( p_sys );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* 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;
}
/*****************************************************************************
* 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 InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
{
decoder_sys_t *p_sys;
int i_val;
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
return VLC_ENOMEM;
p_codec->type = AVMEDIA_TYPE_VIDEO;
p_context->codec_type = AVMEDIA_TYPE_VIDEO;
p_context->codec_id = i_codec_id;
p_sys->p_context = p_context;
p_sys->p_codec = p_codec;
p_sys->i_codec_id = i_codec_id;
p_sys->psz_namecodec = psz_namecodec;
p_sys->p_ff_pic = avcodec_alloc_frame();
p_sys->b_delayed_open = true;
p_sys->p_va = NULL;
vlc_sem_init( &p_sys->sem_mt, 0 );
/* ***** Fill p_context with init values ***** */
p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ? p_dec->fmt_in.i_original_fourcc : p_dec->fmt_in.i_codec ); // sunqueen modify
/* ***** Get configuration of ffmpeg plugin ***** */
p_sys->p_context->workaround_bugs =
var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
p_sys->p_context->err_recognition =
var_InheritInteger( p_dec, "avcodec-error-resilience" );
if( var_CreateGetBool( p_dec, "grayscale" ) )
p_sys->p_context->flags |= CODEC_FLAG_GRAY;
/* ***** Output always the frames ***** */
#if LIBAVCODEC_VERSION_CHECK(55, 23, 1, 40, 101)
p_sys->p_context->flags |= CODEC_FLAG_OUTPUT_CORRUPT;
#endif
i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
if( i_val ) p_sys->p_context->debug_mv = i_val;
i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
/* ***** libavcodec frame skipping ***** */
p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
i_val = var_CreateGetInteger( p_dec, "avcodec-skip-frame" );
if( i_val >= 4 ) p_sys->p_context->skip_frame = AVDISCARD_ALL;
else if( i_val == 3 ) p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
else if( i_val == 2 ) p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
else if( i_val == 1 ) p_sys->p_context->skip_frame = AVDISCARD_NONREF;
else if( i_val == -1 ) p_sys->p_context->skip_frame = AVDISCARD_NONE;
else p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
p_sys->i_skip_frame = p_sys->p_context->skip_frame;
i_val = var_CreateGetInteger( p_dec, "avcodec-skip-idct" );
if( i_val >= 4 ) p_sys->p_context->skip_idct = AVDISCARD_ALL;
else if( i_val == 3 ) p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
else if( i_val == 2 ) p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
else if( i_val == 1 ) p_sys->p_context->skip_idct = AVDISCARD_NONREF;
else if( i_val == -1 ) p_sys->p_context->skip_idct = AVDISCARD_NONE;
else p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
p_sys->i_skip_idct = p_sys->p_context->skip_idct;
/* ***** libavcodec direct rendering ***** */
p_sys->b_direct_rendering = false;
p_sys->i_direct_rendering_used = -1;
if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
(p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
/* No idea why ... but this fixes flickering on some TSCC streams */
p_sys->i_codec_id != AV_CODEC_ID_TSCC && p_sys->i_codec_id != AV_CODEC_ID_CSCD &&
p_sys->i_codec_id != AV_CODEC_ID_CINEPAK &&
!p_sys->p_context->debug_mv )
{
/* 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 = true;
}
/* libavcodec doesn't properly release old pictures when frames are skipped */
//if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
if( p_sys->b_direct_rendering )
{
msg_Dbg( p_dec, "trying to use direct rendering" );
p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
}
else
{
msg_Dbg( p_dec, "direct rendering is disabled" );
}
p_sys->p_context->get_format = ffmpeg_GetFormat;
/* Always use our get_buffer wrapper so we can calculate the
* PTS correctly */
#if LIBAVCODEC_VERSION_MAJOR >= 55
p_sys->p_context->get_buffer2 = lavc_GetFrame;
#else
p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
p_sys->p_context->reget_buffer = avcodec_default_reget_buffer;
p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
#endif
p_sys->p_context->opaque = p_dec;
#ifdef HAVE_AVCODEC_MT
int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
if( i_thread_count <= 0 )
{
i_thread_count = vlc_GetCPUCount();
if( i_thread_count > 1 )
i_thread_count++;
//FIXME: take in count the decoding time
i_thread_count = __MIN( i_thread_count, 4 );
}
i_thread_count = __MIN( i_thread_count, 16 );
msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
p_sys->p_context->thread_count = i_thread_count;
p_sys->p_context->thread_safe_callbacks = true;
switch( i_codec_id )
{
case AV_CODEC_ID_MPEG4:
case AV_CODEC_ID_H263:
p_sys->p_context->thread_type = 0;
break;
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO:
p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
/* fall through */
# if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 1, 0))
case AV_CODEC_ID_H264:
case AV_CODEC_ID_VC1:
case AV_CODEC_ID_WMV3:
p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
# endif
}
/* Workaround: frame multithreading is not compatible with
* DXVA2. When a frame is being copied to host memory, the frame
* is locked and cannot be used as a reference frame
* simultaneously and thus decoding fails for some frames. This
* causes major image corruption. */
# if defined(_WIN32)
char *avcodec_hw = var_InheritString( p_dec, "avcodec-hw" );
if( avcodec_hw == NULL || strcasecmp( avcodec_hw, "none" ) )
{
msg_Warn( p_dec, "threaded frame decoding is not compatible with DXVA2, disabled" );
p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
}
free( avcodec_hw );
# endif
if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
#endif
/* ***** misc init ***** */
p_sys->i_pts = VLC_TS_INVALID;
p_sys->b_has_b_frames = false;
p_sys->b_first_frame = true;
p_sys->b_flush = false;
p_sys->i_late_frames = 0;
/* Set output properties */
p_dec->fmt_out.i_cat = VIDEO_ES;
if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
{
/* we are doomed. but not really, because most codecs set their pix_fmt later on */
p_dec->fmt_out.i_codec = VLC_CODEC_I420;
}
p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
p_dec->fmt_out.video.orientation = p_dec->fmt_in.video.orientation;
#if LIBAVCODEC_VERSION_MAJOR < 54
/* Setup palette */
memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
if( p_dec->fmt_in.video.p_palette )
{
p_sys->palette.palette_changed = 1;
for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
{
union {
uint32_t u;
uint8_t a[4];
} c;
c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
p_sys->palette.palette[i] = c.u;
}
p_sys->p_context->palctrl = &p_sys->palette;
p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
if( p_dec->fmt_out.video.p_palette )
*p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
}
else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
{
p_sys->p_context->palctrl = &p_sys->palette;
}
#else
if( p_dec->fmt_in.video.p_palette ) {
p_sys->palette_sent = false;
p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
if( p_dec->fmt_out.video.p_palette )
*p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
} else
p_sys->palette_sent = true;
#endif
/* ***** init this codec with special data ***** */
ffmpeg_InitCodec( p_dec );
/* ***** Open the codec ***** */
if( ffmpeg_OpenCodec( p_dec ) < 0 )
{
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
avcodec_free_frame( &p_sys->p_ff_pic );
vlc_sem_destroy( &p_sys->sem_mt );
free( p_sys );
return VLC_EGENERIC;
}
if ( p_dec->fmt_in.i_codec == VLC_CODEC_VP9 )
p_dec->b_need_packetized = true;
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;
int b_null_size = VLC_FALSE;
block_t *p_block;
if( !pp_block || !*pp_block ) return NULL;
if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
ffmpeg_InitCodec( p_dec );
p_block = *pp_block;
if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
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_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 > 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_dec->b_pace_control &&
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
{
if (!(p_block->i_flags & BLOCK_FLAG_PREROLL))
{
b_drawpicture = 1;
p_sys->p_context->hurry_up = 0;
}
else
{
b_drawpicture = 0;
p_sys->p_context->hurry_up = 1;
}
}
if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
{
p_sys->p_context->hurry_up = 5;
b_null_size = VLC_TRUE;
}
/*
* 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,
(uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
if( b_null_size && p_sys->p_context->width > 0 &&
p_sys->p_context->height > 0 )
{
/* Reparse it to not drop the I frame */
b_null_size = VLC_FALSE;
p_sys->p_context->hurry_up = 0;
i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
&b_gotpicture,
(uint8_t*)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 (except when doing preroll) */
if( p_sys->i_pts && p_sys->i_pts <= mdate() &&
!(p_block->i_flags & BLOCK_FLAG_PREROLL) )
{
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] )
{
/* 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;
}
if( !p_dec->fmt_in.video.i_aspect )
{
/* Fetch again the aspect ratio in case it changed */
#if LIBAVCODEC_BUILD >= 4687
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR
* ( av_q2d(p_sys->p_context->sample_aspect_ratio)
* p_sys->p_context->width / p_sys->p_context->height );
p_dec->fmt_out.video.i_sar_num
= p_sys->p_context->sample_aspect_ratio.num;
p_dec->fmt_out.video.i_sar_den
= p_sys->p_context->sample_aspect_ratio.den;
#else
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR * p_sys->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_sys->p_context->width / p_sys->p_context->height;
}
}
/* Send decoded frame to vout */
if( p_sys->i_pts )
{
p_pic->date = p_sys->i_pts;
/* interpolate the next PTS */
#if LIBAVCODEC_BUILD >= 4754
if( p_dec->fmt_in.video.i_frame_rate > 0 &&
p_dec->fmt_in.video.i_frame_rate_base > 0 )
{
p_sys->i_pts += I64C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
p_dec->fmt_in.video.i_frame_rate_base *
p_block->i_rate / INPUT_RATE_DEFAULT /
(2 * p_dec->fmt_in.video.i_frame_rate);
}
else if( p_sys->p_context->time_base.den > 0 )
{
p_sys->i_pts += I64C(1000000) *
(2 + p_sys->p_ff_pic->repeat_pict) *
p_sys->p_context->time_base.num *
p_block->i_rate / INPUT_RATE_DEFAULT /
(2 * p_sys->p_context->time_base.den);
}
#else
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 *
p_block->i_rate / INPUT_RATE_DEFAULT /
(2 * p_sys->p_context->frame_rate);
}
#endif
if( p_sys->b_first_frame )
{
/* Hack to force display of still pictures */
p_sys->b_first_frame = VLC_FALSE;
p_pic->b_force = VLC_TRUE;
}
p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
#if LIBAVCODEC_BUILD >= 4685
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;
#endif
return p_pic;
}
else
{
p_dec->pf_vout_buffer_del( p_dec, p_pic );
}
}
block_Release( p_block );
return NULL;
}
/*****************************************************************************
* 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;
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->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
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 ***** */
p_sys->p_context->workaround_bugs =
config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
p_sys->p_context->error_resilience =
config_GetInt( p_dec, "ffmpeg-error-resilience" );
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;
var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_dec, "ffmpeg-vismv", &val );
#if LIBAVCODEC_BUILD >= 4698
if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
#endif
var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_dec, "ffmpeg-lowres", &val );
#if LIBAVCODEC_BUILD >= 4723
if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
#endif
var_Create( p_dec, "ffmpeg-skiploopfilter",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
#if LIBAVCODEC_BUILD >= 4758
if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
#endif
/* ***** 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) &&
/* Apparently direct rendering doesn't work with YUV422P */
p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
/* H264 uses too many reference frames */
p_sys->i_codec_id != CODEC_ID_H264 &&
#if LIBAVCODEC_BUILD >= 4698
!p_sys->p_context->debug_mv )
#else
1 )
#endif
{
/* 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 ***** */
ffmpeg_InitCodec( p_dec );
/* ***** 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->b_first_frame = VLC_TRUE;
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_orig );
/* 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 );
free( p_sys );
return VLC_EGENERIC;
}
vlc_mutex_unlock( lockval.p_address );
msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
return VLC_SUCCESS;
}
