/*****************************************************************************
* 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:
*****************************************************************************/
static picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
picture_t *p_pic;
mtime_t i_pts;
ComponentResult cres;
#ifdef LOADER
/* We must do open and close in the same thread (unless we do
* Setup_LDT_Keeper in the main thread before all others */
if( p_sys == NULL )
{
if( OpenVideo( p_dec ) )
{
/* Fatal */
p_dec->b_error = true;
return NULL;
}
p_sys = p_dec->p_sys;
}
#endif
if( pp_block == NULL || *pp_block == NULL )
{
return NULL;
}
p_block = *pp_block;
*pp_block = NULL;
i_pts = p_block->i_pts ? p_block->i_pts : p_block->i_dts;
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++;
}
else
{
p_sys->i_late = 0;
}
#ifndef NDEBUG
msg_Dbg( p_dec, "bufsize: %d", (int)p_block->i_buffer);
#endif
if( p_sys->i_late > 10 )
{
msg_Dbg( p_dec, "late buffer dropped (%"PRId64")", i_pts );
block_Release( p_block );
return NULL;
}
vlc_mutex_lock( &qt_mutex );
if( ( p_pic = decoder_NewPicture( p_dec ) ) )
{
p_sys->decpar.data = (Ptr)p_block->p_buffer;
p_sys->decpar.bufferSize = p_block->i_buffer;
(**p_sys->framedescHandle).dataSize = p_block->i_buffer;
cres = p_sys->ImageCodecBandDecompress( p_sys->ci, &p_sys->decpar );
++p_sys->decpar.frameNumber;
if( cres &0xFFFF )
{
msg_Dbg( p_dec, "quicktime_video: ImageCodecBandDecompress"
" cres=0x%X (-0x%X) %d :(",
(int)cres,(int)-cres, (int)cres );
}
memcpy( p_pic->p[0].p_pixels, p_sys->plane,
p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height * 2 );
p_pic->date = i_pts;
}
vlc_mutex_unlock( &qt_mutex );
block_Release( p_block );
return p_pic;
}
/*****************************************************************************
* decoder_SynchroChoose : Decide whether we will decode a picture or not
*****************************************************************************/
bool decoder_SynchroChoose( decoder_synchro_t * p_synchro, int i_coding_type,
int i_render_time, bool b_low_delay )
{
#define TAU_PRIME( coding_type ) (p_synchro->p_tau[(coding_type)] \
+ (p_synchro->p_tau[(coding_type)] >> 1) \
+ p_synchro->i_render_time)
#define S (*p_synchro)
mtime_t now, period;
mtime_t pts;
bool b_decode = 0;
int i_current_rate;
if ( p_synchro->b_no_skip )
return 1;
i_current_rate = decoder_GetDisplayRate( p_synchro->p_dec );
now = mdate();
period = 1000000 * 1001 / p_synchro->i_frame_rate
* i_current_rate / INPUT_RATE_DEFAULT;
p_synchro->i_render_time = i_render_time;
switch( i_coding_type )
{
case I_CODING_TYPE:
if( b_low_delay )
{
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.current_pts );
}
else if( S.backward_pts )
{
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.backward_pts );
}
else
{
/* displaying order : B B P B B I
* ^ ^
* | +- current picture
* +- current PTS
*/
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.current_pts ) + period * (S.i_n_b + 2);
}
if( (1 + S.i_n_p * (S.i_n_b + 1)) * period > S.p_tau[I_CODING_TYPE] )
{
b_decode = 1;
}
else
{
b_decode = (pts - now) > (TAU_PRIME(I_CODING_TYPE) + DELTA);
}
if( pts <= VLC_TS_INVALID )
b_decode = 1;
if( !b_decode && !p_synchro->b_quiet )
{
msg_Warn( p_synchro->p_dec,
"synchro trashing I (%"PRId64")", pts - now );
}
break;
case P_CODING_TYPE:
if( b_low_delay )
{
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.current_pts );
}
else if( S.backward_pts )
{
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.backward_pts );
}
else
{
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.current_pts + period * (S.i_n_b + 1) );
}
if( p_synchro->i_nb_ref < 1 )
{
b_decode = 0;
}
else if( (1 + S.i_n_p * (S.i_n_b + 1)) * period >
S.p_tau[I_CODING_TYPE] )
{
if( (S.i_n_b + 1) * period > S.p_tau[P_CODING_TYPE] )
{
/* Security in case we're _really_ late */
b_decode = (pts - now > 0);
}
else
{
b_decode = (pts - now) > (TAU_PRIME(P_CODING_TYPE) + DELTA);
/* next I */
b_decode &= (pts - now
+ period
* ( (S.i_n_p - S.i_eta_p) * (1 + S.i_n_b) - 1 ))
> (TAU_PRIME(P_CODING_TYPE)
+ TAU_PRIME(I_CODING_TYPE) + DELTA);
}
}
else
{
b_decode = 0;
}
if( p_synchro->i_nb_ref >= 1 && pts <= VLC_TS_INVALID )
b_decode = 1;
break;
case B_CODING_TYPE:
pts = decoder_GetDisplayDate( p_synchro->p_dec, S.current_pts );
if( p_synchro->i_nb_ref < 2 )
{
b_decode = 0;
}
else if( (S.i_n_b + 1) * period > S.p_tau[P_CODING_TYPE] )
{
b_decode = (pts - now) > (TAU_PRIME(B_CODING_TYPE) + DELTA);
}
else
{
b_decode = 0;
}
if( p_synchro->i_nb_ref >= 2 && pts <= VLC_TS_INVALID )
b_decode = 1;
break;
}
if( !b_decode )
{
S.i_not_chosen_pic++;
}
return( b_decode );
#undef S
#undef TAU_PRIME
}
/*****************************************************************************
* DecodeAudio:
*****************************************************************************/
static aout_buffer_t *DecodeAudio( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
int i_error;
#ifdef LOADER
/* We must do open and close in the same thread (unless we do
* Setup_LDT_Keeper in the main thread before all others */
if( p_sys == NULL )
{
if( OpenAudio( p_dec ) )
{
/* Fatal */
p_dec->b_error = true;
return NULL;
}
p_sys = p_dec->p_sys;
}
#endif
if( pp_block == NULL || *pp_block == NULL )
{
return NULL;
}
p_block = *pp_block;
if( p_sys->i_out_frames > 0 && p_sys->i_out >= p_sys->i_out_frames )
{
/* Ask new data */
p_sys->i_out = 0;
p_sys->i_out_frames = 0;
*pp_block = NULL;
return NULL;
}
if( p_sys->i_out_frames <= 0 )
{
p_sys->pts = p_block->i_pts;
mtime_t i_display_date = 0;
if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
i_display_date = decoder_GetDisplayDate( p_dec, p_block->i_pts );
if( i_display_date > 0 && i_display_date < mdate() )
{
block_Release( p_block );
*pp_block = NULL;
return NULL;
}
/* Append data */
if( p_sys->i_buffer_size < p_sys->i_buffer + p_block->i_buffer )
{
p_sys->i_buffer_size = p_sys->i_buffer + p_block->i_buffer + 1024;
p_sys->p_buffer = realloc( p_sys->p_buffer, p_sys->i_buffer_size );
}
memcpy( &p_sys->p_buffer[p_sys->i_buffer], p_block->p_buffer,
p_block->i_buffer );
p_sys->i_buffer += p_block->i_buffer;
if( p_sys->i_buffer > p_sys->InFrameSize )
{
int i_frames = p_sys->i_buffer / p_sys->InFrameSize;
unsigned long i_out_frames, i_out_bytes;
vlc_mutex_lock( &qt_mutex );
i_error = p_sys->SoundConverterConvertBuffer( p_sys->myConverter,
p_sys->p_buffer,
i_frames,
p_sys->out_buffer,
&i_out_frames,
&i_out_bytes );
vlc_mutex_unlock( &qt_mutex );
/*
msg_Dbg( p_dec, "decoded %d frames -> %ld frames (error=%d)",
i_frames, i_out_frames, i_error );
msg_Dbg( p_dec, "decoded %ld frames = %ld bytes",
i_out_frames, i_out_bytes );
*/
p_sys->i_buffer -= i_frames * p_sys->InFrameSize;
if( p_sys->i_buffer > 0 )
{
memmove( &p_sys->p_buffer[0],
&p_sys->p_buffer[i_frames * p_sys->InFrameSize],
p_sys->i_buffer );
}
if( p_sys->pts != 0 &&
p_sys->pts != date_Get( &p_sys->date ) )
{
date_Set( &p_sys->date, p_sys->pts );
}
else if( !date_Get( &p_sys->date ) )
{
return NULL;
}
if( !i_error && i_out_frames > 0 )
{
/* we have others samples */
p_sys->i_out_frames = i_out_frames;
p_sys->i_out = 0;
}
}
}
if( p_sys->i_out < p_sys->i_out_frames )
{
aout_buffer_t *p_out;
int i_frames = __MIN( p_sys->i_out_frames - p_sys->i_out, 1000 );
p_out = decoder_NewAudioBuffer( p_dec, i_frames );
if( p_out )
{
p_out->i_pts = date_Get( &p_sys->date );
p_out->i_length = date_Increment( &p_sys->date, i_frames )
- p_out->i_pts;
memcpy( p_out->p_buffer,
&p_sys->out_buffer[2 * p_sys->i_out * p_dec->fmt_out.audio.i_channels],
p_out->i_buffer );
p_sys->i_out += i_frames;
}
return p_out;
}
return NULL;
}
/*****************************************************************************
* 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;
}
