static block_t * ParseAUTail(decoder_t *p_dec, uint8_t i_nal_type, block_t *p_nalb)
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_ret = NULL;
block_ChainLastAppend(&p_sys->post.pp_chain_last, p_nalb);
switch(i_nal_type)
{
case HEVC_NAL_EOS:
case HEVC_NAL_EOB:
p_ret = OutputQueues(p_sys, true);
break;
case HEVC_NAL_SUFF_SEI:
HxxxParse_AnnexB_SEI( p_nalb->p_buffer, p_nalb->i_buffer,
2 /* nal header */, ParseSEICallback, p_dec );
break;
}
if(!p_ret && p_sys->frame.p_chain == NULL)
p_ret = OutputQueues(p_sys, false);
return p_ret;
}
static block_t * OutputQueues(decoder_sys_t *p_sys, bool b_valid)
{
block_t *p_output = NULL;
block_t **pp_output_last = &p_output;
uint32_t i_flags = 0; /* Because block_ChainGather does not merge flags or times */
if(p_sys->pre.p_chain)
{
i_flags |= p_sys->pre.p_chain->i_flags;
block_ChainLastAppend(&pp_output_last, p_sys->pre.p_chain);
INITQ(pre);
}
if(p_sys->frame.p_chain)
{
i_flags |= p_sys->frame.p_chain->i_flags;
if(p_output && p_output->i_dts == 0)
{
p_output->i_dts = p_sys->frame.p_chain->i_dts;
p_output->i_pts = p_sys->frame.p_chain->i_pts;
}
block_ChainLastAppend(&pp_output_last, p_sys->frame.p_chain);
INITQ(frame);
}
if(p_sys->post.p_chain)
{
i_flags |= p_sys->post.p_chain->i_flags;
block_ChainLastAppend(&pp_output_last, p_sys->post.p_chain);
INITQ(post);
}
if(p_output)
{
p_output->i_flags |= i_flags;
if(!b_valid)
p_output->i_flags |= BLOCK_FLAG_CORRUPTED;
}
return p_output;
}
static void OutputSend( sout_stream_t *p_stream, sout_stream_id_t *id, block_t *p_block )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
if( id->id )
{
/* We wait until the first key frame (if needed) and
* to be beyong i_dts_start (for stream without key frame) */
if( id->b_wait_key )
{
if( p_block->i_flags & BLOCK_FLAG_TYPE_I )
{
id->b_wait_key = false;
id->b_wait_start = false;
}
if( ( p_block->i_flags & BLOCK_FLAG_TYPE_MASK ) == 0 )
id->b_wait_key = false;
}
if( id->b_wait_start )
{
if( p_block->i_dts >=p_sys->i_dts_start )
id->b_wait_start = false;
}
if( id->b_wait_key || id->b_wait_start )
block_ChainRelease( p_block );
else
sout_StreamIdSend( p_sys->p_out, id->id, p_block );
}
else if( p_sys->b_drop )
{
block_ChainRelease( p_block );
}
else
{
size_t i_size;
block_ChainProperties( p_block, NULL, &i_size, NULL );
p_sys->i_size += i_size;
block_ChainLastAppend( &id->pp_last, p_block );
}
}
static block_t * ParseAUTail(decoder_t *p_dec, uint8_t i_nal_type, block_t *p_nalb)
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_ret = NULL;
block_ChainLastAppend(&p_sys->post.pp_chain_last, p_nalb);
switch(i_nal_type)
{
case HEVC_NAL_EOS:
case HEVC_NAL_EOB:
p_ret = OutputQueues(p_sys, true);
break;
}
if(!p_ret && p_sys->frame.p_chain == NULL)
p_ret = OutputQueues(p_sys, false);
return p_ret;
}
static block_t * ParseAUHead(decoder_t *p_dec, uint8_t i_nal_type, block_t *p_nalb)
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_ret = NULL;
if(p_sys->post.p_chain || p_sys->frame.p_chain)
p_ret = OutputQueues(p_sys, true);
switch(i_nal_type)
{
case HEVC_NAL_AUD:
if(!p_ret && p_sys->pre.p_chain)
p_ret = OutputQueues(p_sys, true);
break;
case HEVC_NAL_VPS:
case HEVC_NAL_SPS:
case HEVC_NAL_PPS:
{
uint8_t i_id;
if( hevc_get_xps_id(p_nalb->p_buffer, p_nalb->i_buffer, &i_id) &&
InsertXPS(p_dec, i_nal_type, i_id, p_nalb) )
{
const hevc_sequence_parameter_set_t *p_sps;
if( i_nal_type == HEVC_NAL_SPS &&
(p_sps = p_dec->p_sys->rgi_p_decsps[i_id]) )
{
if(!p_dec->fmt_out.video.i_frame_rate)
{
(void) hevc_get_frame_rate( p_sps, p_dec->p_sys->rgi_p_decvps,
&p_dec->fmt_out.video.i_frame_rate,
&p_dec->fmt_out.video.i_frame_rate_base );
}
if(p_dec->fmt_out.video.primaries == COLOR_PRIMARIES_UNDEF)
{
(void) hevc_get_colorimetry( p_sps,
&p_dec->fmt_out.video.primaries,
&p_dec->fmt_out.video.transfer,
&p_dec->fmt_out.video.space,
&p_dec->fmt_out.video.b_color_range_full);
}
unsigned sizes[4];
if( hevc_get_picture_size( p_sps, &sizes[0], &sizes[1],
&sizes[2], &sizes[3] ) )
{
if( p_dec->fmt_out.video.i_width != sizes[0] ||
p_dec->fmt_out.video.i_height != sizes[1] )
{
p_dec->fmt_out.video.i_width = sizes[0];
p_dec->fmt_out.video.i_height = sizes[1];
}
}
if(p_dec->fmt_out.i_profile == -1)
{
uint8_t i_profile, i_level;
if( hevc_get_sps_profile_tier_level( p_sps, &i_profile, &i_level ) )
{
p_dec->fmt_out.i_profile = i_profile;
p_dec->fmt_out.i_level = i_level;
}
}
}
}
break;
}
case HEVC_NAL_PREF_SEI:
HxxxParse_AnnexB_SEI( p_nalb->p_buffer, p_nalb->i_buffer,
2 /* nal header */, ParseSEICallback, p_dec );
break;
default:
break;
}
block_ChainLastAppend(&p_sys->pre.pp_chain_last, p_nalb);
return p_ret;
}
static block_t *ParseVCL(decoder_t *p_dec, uint8_t i_nal_type, block_t *p_frag)
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_outputchain = NULL;
const uint8_t *p_buffer = p_frag->p_buffer;
size_t i_buffer = p_frag->i_buffer;
if(unlikely(!hxxx_strip_AnnexB_startcode(&p_buffer, &i_buffer) || i_buffer < 3))
{
block_ChainLastAppend(&p_sys->frame.pp_chain_last, p_frag); /* might be corrupted */
return NULL;
}
const uint8_t i_layer = hevc_getNALLayer( p_buffer );
bool b_first_slice_in_pic = p_buffer[2] & 0x80;
if (b_first_slice_in_pic)
{
if(p_sys->frame.p_chain)
{
/* Starting new frame: return previous frame data for output */
p_outputchain = OutputQueues(p_sys, p_sys->b_init_sequence_complete);
}
switch(i_nal_type)
{
case HEVC_NAL_BLA_W_LP:
case HEVC_NAL_BLA_W_RADL:
case HEVC_NAL_BLA_N_LP:
case HEVC_NAL_IDR_W_RADL:
case HEVC_NAL_IDR_N_LP:
case HEVC_NAL_CRA:
p_frag->i_flags |= BLOCK_FLAG_TYPE_I;
break;
default:
{
hevc_slice_segment_header_t *p_sli = hevc_decode_slice_header( p_buffer, i_buffer, true,
p_sys->rgi_p_decsps, p_sys->rgi_p_decpps );
if( p_sli )
{
enum hevc_slice_type_e type;
if( hevc_get_slice_type( p_sli, &type ) )
{
if( type == HEVC_SLICE_TYPE_P )
p_frag->i_flags |= BLOCK_FLAG_TYPE_P;
else
p_frag->i_flags |= BLOCK_FLAG_TYPE_B;
}
hevc_rbsp_release_slice_header( p_sli );
}
else p_frag->i_flags |= BLOCK_FLAG_TYPE_B;
}
break;
}
}
if(!p_sys->b_init_sequence_complete && i_layer == 0 &&
(p_frag->i_flags & BLOCK_FLAG_TYPE_I) && XPSReady(p_sys))
{
p_sys->b_init_sequence_complete = true;
}
if( !p_sys->b_init_sequence_complete )
cc_storage_reset( p_sys->p_ccs );
block_ChainLastAppend(&p_sys->frame.pp_chain_last, p_frag);
return p_outputchain;
}
/*****************************************************************************
* ParseMPEGBlock: Re-assemble fragments into a block containing a picture
*****************************************************************************/
static block_t *ParseMPEGBlock( decoder_t *p_dec, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic = NULL;
/*
* Check if previous picture is finished
*/
if( ( p_sys->b_frame_slice &&
(p_frag->p_buffer[3] == 0x00 || p_frag->p_buffer[3] > 0xaf) ) &&
p_sys->p_seq == NULL )
{
/* We have a picture but without a sequence header we can't
* do anything */
msg_Dbg( p_dec, "waiting for sequence start" );
if( p_sys->p_frame ) block_ChainRelease( p_sys->p_frame );
p_sys->p_frame = NULL;
p_sys->pp_last = &p_sys->p_frame;
p_sys->b_frame_slice = false;
}
else if( p_sys->b_frame_slice &&
(p_frag->p_buffer[3] == 0x00 || p_frag->p_buffer[3] > 0xaf) )
{
const bool b_eos = p_frag->p_buffer[3] == 0xb7;
mtime_t i_duration;
if( b_eos )
{
block_ChainLastAppend( &p_sys->pp_last, p_frag );
p_frag = NULL;
}
p_pic = block_ChainGather( p_sys->p_frame );
if( b_eos )
p_pic->i_flags |= BLOCK_FLAG_END_OF_SEQUENCE;
i_duration = (mtime_t)( 1000000 * p_sys->i_frame_rate_base /
p_sys->i_frame_rate );
if( !p_sys->b_seq_progressive && p_sys->i_picture_structure != 0x03 )
{
i_duration /= 2;
}
if( p_sys->b_seq_progressive )
{
if( p_sys->i_top_field_first == 0 &&
p_sys->i_repeat_first_field == 1 )
{
i_duration *= 2;
}
else if( p_sys->i_top_field_first == 1 &&
p_sys->i_repeat_first_field == 1 )
{
i_duration *= 3;
}
}
else
{
if( p_sys->i_picture_structure == 0x03 )
{
if( p_sys->i_progressive_frame && p_sys->i_repeat_first_field )
{
i_duration += i_duration / 2;
}
}
}
if( p_sys->b_low_delay || p_sys->i_picture_type == 0x03 )
{
/* Trivial case (DTS == PTS) */
/* Correct interpolated dts when we receive a new pts/dts */
if( p_sys->i_pts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_sys->i_pts;
if( p_sys->i_dts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_sys->i_dts;
}
else
{
/* Correct interpolated dts when we receive a new pts/dts */
if(p_sys->i_last_ref_pts > VLC_TS_INVALID && !p_sys->b_second_field)
p_sys->i_interpolated_dts = p_sys->i_last_ref_pts;
if( p_sys->i_dts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_sys->i_dts;
if( !p_sys->b_second_field )
p_sys->i_last_ref_pts = p_sys->i_pts;
}
p_pic->i_dts = p_sys->i_interpolated_dts;
p_sys->i_interpolated_dts += i_duration;
/* Set PTS only if we have a B frame or if it comes from the stream */
if( p_sys->i_pts > VLC_TS_INVALID )
{
p_pic->i_pts = p_sys->i_pts;
}
else if( p_sys->i_picture_type == 0x03 )
{
p_pic->i_pts = p_pic->i_dts;
}
else
{
p_pic->i_pts = VLC_TS_INVALID;
}
switch ( p_sys->i_picture_type )
{
case 0x01:
p_pic->i_flags |= BLOCK_FLAG_TYPE_I;
break;
case 0x02:
p_pic->i_flags |= BLOCK_FLAG_TYPE_P;
break;
case 0x03:
p_pic->i_flags |= BLOCK_FLAG_TYPE_B;
break;
}
p_pic->i_length = p_sys->i_interpolated_dts - p_pic->i_dts;
#if 0
msg_Dbg( p_dec, "pic: type=%d dts=%"PRId64" pts-dts=%"PRId64,
p_sys->i_picture_type, p_pic->i_dts, p_pic->i_pts - p_pic->i_dts);
#endif
/* Reset context */
p_sys->p_frame = NULL;
p_sys->pp_last = &p_sys->p_frame;
p_sys->b_frame_slice = false;
if( p_sys->i_picture_structure != 0x03 )
{
p_sys->b_second_field = !p_sys->b_second_field;
}
else
{
p_sys->b_second_field = 0;
}
/* CC */
p_sys->b_cc_reset = true;
p_sys->i_cc_pts = p_pic->i_pts;
p_sys->i_cc_dts = p_pic->i_dts;
p_sys->i_cc_flags = p_pic->i_flags;
}
if( !p_pic && p_sys->b_cc_reset )
{
p_sys->b_cc_reset = false;
cc_Flush( &p_sys->cc );
}
if( !p_frag )
return p_pic;
/*
* Check info of current fragment
*/
if( p_frag->p_buffer[3] == 0xb8 )
{
/* Group start code */
if( p_sys->p_seq &&
p_sys->i_seq_old > p_sys->i_frame_rate/p_sys->i_frame_rate_base )
{
/* Useful for mpeg1: repeat sequence header every second */
block_ChainLastAppend( &p_sys->pp_last, block_Duplicate( p_sys->p_seq ) );
if( p_sys->p_ext )
{
block_ChainLastAppend( &p_sys->pp_last, block_Duplicate( p_sys->p_ext ) );
}
p_sys->i_seq_old = 0;
}
}
else if( p_frag->p_buffer[3] == 0xb3 && p_frag->i_buffer >= 8 )
{
/* Sequence header code */
static const int code_to_frame_rate[16][2] =
{
{ 1, 1 }, /* invalid */
{ 24000, 1001 }, { 24, 1 }, { 25, 1 }, { 30000, 1001 },
{ 30, 1 }, { 50, 1 }, { 60000, 1001 }, { 60, 1 },
/* Unofficial 15fps from Xing*/
{ 15, 1001 },
/* Unofficial economy rates from libmpeg3 */
{ 5000, 1001 }, { 1000, 1001 }, { 12000, 1001 }, { 15000, 1001 },
{ 1, 1 }, { 1, 1 } /* invalid */
};
if( p_sys->p_seq ) block_Release( p_sys->p_seq );
if( p_sys->p_ext ) block_Release( p_sys->p_ext );
p_sys->p_seq = block_Duplicate( p_frag );
p_sys->i_seq_old = 0;
p_sys->p_ext = NULL;
p_dec->fmt_out.video.i_width =
( p_frag->p_buffer[4] << 4)|(p_frag->p_buffer[5] >> 4 );
p_dec->fmt_out.video.i_height =
( (p_frag->p_buffer[5]&0x0f) << 8 )|p_frag->p_buffer[6];
p_sys->i_aspect_ratio_info = p_frag->p_buffer[7] >> 4;
/* TODO: MPEG1 aspect ratio */
p_sys->i_frame_rate = code_to_frame_rate[p_frag->p_buffer[7]&0x0f][0];
p_sys->i_frame_rate_base =
code_to_frame_rate[p_frag->p_buffer[7]&0x0f][1];
p_dec->fmt_out.video.i_frame_rate = p_sys->i_frame_rate;
p_dec->fmt_out.video.i_frame_rate_base = p_sys->i_frame_rate_base;
p_sys->b_seq_progressive = true;
p_sys->b_low_delay = true;
if ( !p_sys->b_inited )
{
msg_Dbg( p_dec, "size %dx%d fps=%.3f",
p_dec->fmt_out.video.i_width, p_dec->fmt_out.video.i_height,
p_sys->i_frame_rate / (float)p_sys->i_frame_rate_base );
p_sys->b_inited = 1;
}
}
else if( p_frag->p_buffer[3] == 0xb5 )
/*****************************************************************************
* ParseNALBlock: parses annexB type NALs
* All p_frag blocks are required to start with 0 0 0 1 4-byte startcode
*****************************************************************************/
static block_t *ParseNALBlock( decoder_t *p_dec, bool *pb_ts_used, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic = NULL;
bool b_new_picture = false;
const int i_nal_type = p_frag->p_buffer[4]&0x1f;
const mtime_t i_frag_dts = p_frag->i_dts;
const mtime_t i_frag_pts = p_frag->i_pts;
if( p_sys->b_slice && (!p_sys->p_active_pps || !p_sys->p_active_sps) )
{
msg_Warn( p_dec, "waiting for SPS/PPS" );
/* Reset context */
p_sys->slice.type = H264_SLICE_TYPE_UNKNOWN;
p_sys->b_slice = false;
DropStoredNAL( p_sys );
/* From SEI */
p_sys->i_dpb_output_delay = 0;
p_sys->i_pic_struct = UINT8_MAX;
cc_storage_reset( p_sys->p_ccs );
}
if( i_nal_type >= H264_NAL_SLICE && i_nal_type <= H264_NAL_SLICE_IDR )
{
h264_slice_t newslice;
if( i_nal_type == H264_NAL_SLICE_IDR )
{
p_sys->b_recovered = true;
p_sys->i_recovery_frame_cnt = UINT_MAX;
p_sys->i_recoveryfnum = UINT_MAX;
}
if( ParseSliceHeader( p_dec, p_frag, &newslice ) )
{
/* Only IDR carries the id, to be propagated */
if( newslice.i_idr_pic_id == -1 )
newslice.i_idr_pic_id = p_sys->slice.i_idr_pic_id;
b_new_picture = IsFirstVCLNALUnit( &p_sys->slice, &newslice );
if( b_new_picture )
{
/* Parse SEI for that frame now we should have matched SPS/PPS */
for( block_t *p_sei = p_sys->p_sei; p_sei; p_sei = p_sei->p_next )
{
HxxxParse_AnnexB_SEI( p_sei->p_buffer, p_sei->i_buffer,
1 /* nal header */, ParseSeiCallback, p_dec );
}
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
}
/* */
p_sys->slice = newslice;
}
else
{
p_sys->p_active_pps = NULL;
/* Fragment will be discarded later on */
}
p_sys->b_slice = true;
}
else if( i_nal_type == H264_NAL_SPS )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
PutSPS( p_dec, p_frag );
p_sys->b_new_sps = true;
/* Do not append the SPS because we will insert it on keyframes */
p_frag = NULL;
}
else if( i_nal_type == H264_NAL_PPS )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
PutPPS( p_dec, p_frag );
p_sys->b_new_pps = true;
/* Do not append the PPS because we will insert it on keyframes */
p_frag = NULL;
}
else if( i_nal_type == H264_NAL_SEI )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
block_ChainLastAppend( &p_sys->pp_sei_last, p_frag );
p_frag = NULL;
}
else if( i_nal_type == H264_NAL_END_OF_SEQ || i_nal_type == H264_NAL_END_OF_STREAM )
{
/* Early end of packetization */
block_ChainLastAppend( &p_sys->pp_sei_last, p_frag );
p_frag = NULL;
/* important for still pictures/menus */
p_sys->i_next_block_flags |= BLOCK_FLAG_END_OF_SEQUENCE;
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
}
else if( i_nal_type == H264_NAL_AU_DELIMITER ||
( i_nal_type >= H264_NAL_PREFIX && i_nal_type <= H264_NAL_RESERVED_18 ) )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
if( i_nal_type == H264_NAL_AU_DELIMITER )
{
if( p_sys->p_frame && (p_sys->p_frame->i_flags & BLOCK_FLAG_PRIVATE_AUD) )
{
block_Release( p_frag );
p_frag = NULL;
}
else
{
p_frag->i_flags |= BLOCK_FLAG_PRIVATE_AUD;
}
}
}
/* Append the block */
if( p_frag )
block_ChainLastAppend( &p_sys->pp_frame_last, p_frag );
*pb_ts_used = false;
if( p_sys->i_frame_dts <= VLC_TS_INVALID &&
p_sys->i_frame_pts <= VLC_TS_INVALID && b_new_picture )
{
p_sys->i_frame_dts = i_frag_dts;
p_sys->i_frame_pts = i_frag_pts;
*pb_ts_used = true;
if( i_frag_dts > VLC_TS_INVALID )
date_Set( &p_sys->dts, i_frag_dts );
}
if( p_pic && (p_pic->i_flags & BLOCK_FLAG_DROP) )
{
block_Release( p_pic );
p_pic = NULL;
}
return p_pic;
}
/***
* Encapsulation (packetization) suitable for all muxing standards
* maps [DataUnit] -> EncapsulationUnit
*/
static block_t *dirac_BuildEncapsulationUnit( decoder_t *p_dec, block_t *p_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
assert(p_block->i_buffer >= 13 && 0x42424344 == GetDWBE( p_block->p_buffer ));
if( p_sys->i_eu_pts <= VLC_TS_INVALID && p_sys->i_eu_dts <= VLC_TS_INVALID )
{
/* earliest block with pts/dts gets to set the pts/dts for the dated
* encapsulation unit as a whole */
/* NB, the 'earliest block' criteria is aribtary */
if( p_block->i_pts > VLC_TS_INVALID || p_block->i_dts > VLC_TS_INVALID )
{
p_sys->i_eu_pts = p_block->i_pts;
p_sys->i_eu_dts = p_block->i_dts;
}
}
/* inpectdataunit also updates flags for the EU.
* - if this is the first block in the EU, then it hasn't been added
* to the chain yet (so, p_block will become the front of the chain
* - otherwise, use the flags of the chain (first block) */
block_t *p_eu = p_sys->p_eu ? p_sys->p_eu : p_block;
int i_block = dirac_InspectDataUnit( p_dec, &p_block, p_eu);
if( !p_block )
{
/* block has been discarded during inspection */
/* becareful, don't discard anything that is dated,
* as this needs to go into the timegen loop. set
* the DIRAC_DISCARD block flag, and it'll be dropped
* at output time */
return NULL;
}
block_ChainLastAppend( &p_sys->pp_eu_last, p_block );
dirac_block_encap_t *p_dbe = dirac_GetBlockEncap( p_block );
#ifdef SANITIZE_PREV_PARSE_OFFSET
/* fixup prev_parse_offset to point to the last data unit
* to arrive */
if( p_dbe )
{
SetDWBE( p_block->p_buffer + 9, p_sys->u_eu_last_npo );
p_sys->u_eu_last_npo = p_dbe->u_last_next_offset;
}
#endif
if( i_block != DIRAC_DU_ENDS_EU )
{
/* encapsulation unit not ended */
return NULL;
}
/* gather up encapsulation unit, reassociating the final
* private state with the gathered block */
block_t *p_eu_last = (block_t*) p_sys->pp_eu_last - offsetof( block_t, p_next );
p_dbe = dirac_RemoveBlockEncap( p_eu_last );
uint8_t u_parse_code = p_block->p_buffer[4];
/* gather up the encapsulation unit */
p_block = block_ChainGather( p_sys->p_eu );
assert( p_block ); /* block_ChainGather doesn't define when it frees chain */
p_block->i_flags |= DIRAC_NON_DATED;
if( p_dbe )
{
dirac_AddBlockEncap( &p_block, p_dbe );
if( dirac_isPicture( u_parse_code ) ) p_block->i_flags &= ~DIRAC_NON_DATED;
}
p_sys->p_eu = NULL;
p_sys->pp_eu_last = &p_sys->p_eu;
return p_block;
}
/*****************************************************************************
* Packetize: form dated encapsulation units from anything
*****************************************************************************/
static block_t *Packetize( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block = NULL;
int i_flushing = 0;
if( pp_block && *pp_block )
{
p_block = *pp_block;
*pp_block = NULL;
if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
{
/* pre-emptively insert an EOS at a discontinuity, protects
* any decoders from any sudden changes */
block_Release( p_block );
p_block = dirac_EmitEOS( p_dec, 0 );
if( p_block )
{
p_block->p_next = dirac_EmitEOS( p_dec, 13 );
/* need two EOS to ensure it gets detected by synchro
* duplicates get discarded in forming encapsulation unit */
}
}
else if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
{
/* silently discard corruption sentinels,
* synchronizer will then discard affected data units.
* do not produce an EOS data unit as this is very
* disruptive to the stream (and may make a larger error). */
block_Release( p_block );
p_block = NULL;
}
if( p_block )
block_BytestreamPush( &p_sys->bytestream, p_block );
}
/* form as many encapsulation units as possible, give up
* when the synchronizer runs out of input data */
while( ( p_block = dirac_DoSync( p_dec ) ) )
{
p_block = dirac_BuildEncapsulationUnit( p_dec, p_block );
if( !p_block )
continue;
/* add to tail of output queue (ie, not reordered) */
block_ChainLastAppend( &p_sys->pp_outqueue_last, p_block );
/* insert encapsulation unit into timestamp generator
* which then calculates some timestamps if required */
i_flushing = dirac_TimeGenPush( p_dec, p_block );
if( i_flushing )
break;
}
block_t *p_output = NULL;
block_t **pp_output = &p_output;
/* extract all the dated packets from the head of the output queue */
/* explicitly nondated packets repeat the previous timestamps to
* stop vlc discarding them */
while( (p_block = p_sys->p_outqueue) )
{
if( p_block->i_flags & DIRAC_DISCARD )
{
p_sys->p_outqueue = p_block->p_next;
p_block->p_next = NULL;
block_Release( p_block );
continue;
}
if( i_flushing || p_block->i_flags & DIRAC_NON_DATED )
{
p_block->i_dts = p_sys->i_dts_last_out;
p_block->i_pts = p_sys->i_pts_last_out;
}
else if( p_block->i_pts <= VLC_TS_INVALID ) break;
else if( p_block->i_dts <= VLC_TS_INVALID ) break;
p_sys->i_dts_last_out = p_block->i_dts;
p_sys->i_pts_last_out = p_block->i_pts;
p_sys->p_outqueue = p_block->p_next;
p_block->p_next = NULL;
/* clear any flags we set */
p_block->i_flags &= ~BLOCK_FLAG_PRIVATE_MASK;
block_ChainLastAppend( &pp_output, p_block );
mtime_t i_delay = p_block->i_pts - p_block->i_dts;
if( i_delay < 0 )
msg_Err( p_dec, "pts - dts is negative(%"PRId64"): incorrect RoB size", i_delay );
}
if( i_flushing )
{
p_sys->i_eu_dts = p_sys->i_eu_pts = VLC_TS_INVALID;
/* reset timegen state (except synchronizer) */
p_sys->b_seen_seq_hdr = false;
if( i_flushing < 2 )
{
/* this state isn't safe to loose if there was
* an unsignalled discontinuity */
p_sys->b_pts = p_sys->b_dts = false;
}
p_sys->b_tg_last_picnum = false;
dirac_ReorderInit( &p_sys->reorder_buf );
assert( p_sys->p_outqueue == NULL );
p_sys->p_out_dts = NULL;
}
/* perform sanity check:
* if there were a block at the front of outqueue that never
* satisfied the extraction criteria, but all blocks after did,
* the output queue would grow bounded by the stream length.
* If there are 10 data units in the output queue, assume this
* has happened and purge all blocks that fail extraction criteria */
int i_count;
block_ChainProperties( p_sys->p_outqueue, &i_count, NULL, NULL );
if( i_count > 9 )
{
p_block = p_sys->p_outqueue;
while( p_block )
{
block_t *p_block_next = p_block->p_next;
if( p_block->i_pts > VLC_TS_INVALID && p_block->i_dts > VLC_TS_INVALID )
break;
block_Release( p_block );
p_sys->p_outqueue = p_block = p_block_next;
}
}
if( !p_sys->p_outqueue )
{
p_sys->pp_outqueue_last = &p_sys->p_outqueue;
}
return p_output;
}
static block_t *OutputPicture( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic;
if ( !p_sys->b_header && p_sys->i_recovery_frames != -1 )
{
if( p_sys->i_recovery_frames == 0 )
{
msg_Dbg( p_dec, "Recovery from SEI recovery point complete" );
p_sys->b_header = true;
}
--p_sys->i_recovery_frames;
}
if( !p_sys->b_header && p_sys->i_recovery_frames == -1 &&
p_sys->slice.i_frame_type != BLOCK_FLAG_TYPE_I)
return NULL;
const bool b_sps_pps_i = p_sys->slice.i_frame_type == BLOCK_FLAG_TYPE_I &&
p_sys->b_sps &&
p_sys->b_pps;
if( b_sps_pps_i || p_sys->b_frame_sps || p_sys->b_frame_pps )
{
block_t *p_head = NULL;
if( p_sys->p_frame->i_flags & BLOCK_FLAG_PRIVATE_AUD )
{
p_head = p_sys->p_frame;
p_sys->p_frame = p_sys->p_frame->p_next;
if( p_sys->p_frame == NULL )
p_sys->pp_frame_last = &p_sys->p_frame;
p_head->p_next = NULL;
}
block_t *p_list = NULL;
block_t **pp_list_tail = &p_list;
for( int i = 0; i <= H264_SPS_ID_MAX && (b_sps_pps_i || p_sys->b_frame_sps); i++ )
{
if( p_sys->pp_sps[i] )
block_ChainLastAppend( &pp_list_tail, block_Duplicate( p_sys->pp_sps[i] ) );
}
for( int i = 0; i < H264_PPS_ID_MAX && (b_sps_pps_i || p_sys->b_frame_pps); i++ )
{
if( p_sys->pp_pps[i] )
block_ChainLastAppend( &pp_list_tail, block_Duplicate( p_sys->pp_pps[i] ) );
}
if( b_sps_pps_i && p_list )
p_sys->b_header = true;
if( p_list )
block_ChainAppend( &p_head, p_list );
if( p_sys->p_frame )
block_ChainAppend( &p_head, p_sys->p_frame );
p_pic = block_ChainGather( p_head );
}
else
{
p_pic = block_ChainGather( p_sys->p_frame );
}
unsigned i_num_clock_ts = 2;
if( p_sys->b_frame_mbs_only == 0 )
{
if( p_sys->b_pic_struct_present_flag && p_sys->i_pic_struct < 9 )
{
const uint8_t rgi_numclock[9] = { 1, 1, 1, 2, 2, 3, 3, 2, 3 };
i_num_clock_ts = rgi_numclock[ p_sys->i_pic_struct ];
}
else if( p_sys->slice.i_field_pic_flag ) /* See D-1 and E-6 */
{
i_num_clock_ts = 1;
}
}
if( p_sys->i_time_scale && p_pic->i_length == 0 )
{
p_pic->i_length = CLOCK_FREQ * i_num_clock_ts *
p_sys->i_num_units_in_tick / p_sys->i_time_scale;
}
mtime_t i_field_pts_diff = -1;
if( p_sys->b_frame_mbs_only == 0 && p_sys->b_pic_struct_present_flag )
{
switch( p_sys->i_pic_struct )
{
/* Top and Bottom field slices */
case 1:
case 2:
if( !p_sys->b_even_frame )
{
p_pic->i_flags |= (p_sys->i_pic_struct == 1) ? BLOCK_FLAG_TOP_FIELD_FIRST
: BLOCK_FLAG_BOTTOM_FIELD_FIRST;
}
else if( p_pic->i_pts <= VLC_TS_INVALID && p_sys->i_prev_pts > VLC_TS_INVALID && p_pic->i_length )
{
/* interpolate from even frame */
i_field_pts_diff = p_pic->i_length;
}
p_sys->b_even_frame = !p_sys->b_even_frame;
break;
/* Each of the following slices contains multiple fields */
case 3:
p_pic->i_flags |= BLOCK_FLAG_TOP_FIELD_FIRST;
p_sys->b_even_frame = false;
break;
case 4:
p_pic->i_flags |= BLOCK_FLAG_BOTTOM_FIELD_FIRST;
p_sys->b_even_frame = false;
break;
case 5:
p_pic->i_flags |= BLOCK_FLAG_TOP_FIELD_FIRST;
break;
case 6:
p_pic->i_flags |= BLOCK_FLAG_BOTTOM_FIELD_FIRST;
break;
default:
p_sys->b_even_frame = false;
break;
}
}
/* set dts/pts to current block timestamps */
p_pic->i_dts = p_sys->i_frame_dts;
p_pic->i_pts = p_sys->i_frame_pts;
/* Fixup missing timestamps after split (multiple AU/block)*/
if( p_pic->i_dts <= VLC_TS_INVALID )
p_pic->i_dts = p_sys->i_prev_dts;
/* PTS Fixup, interlaced fields (multiple AU/block) */
if( p_pic->i_pts <= VLC_TS_INVALID && p_sys->i_time_scale )
{
mtime_t i_pts_delay = CLOCK_FREQ * p_sys->i_dpb_output_delay *
p_sys->i_num_units_in_tick / p_sys->i_time_scale;
p_pic->i_pts = p_pic->i_dts + i_pts_delay;
if( i_field_pts_diff >= 0 )
p_pic->i_pts += i_field_pts_diff;
}
/* save for next pic fixups */
p_sys->i_prev_dts = p_pic->i_dts;
p_sys->i_prev_pts = p_pic->i_pts;
p_pic->i_flags |= p_sys->slice.i_frame_type;
p_pic->i_flags &= ~BLOCK_FLAG_PRIVATE_AUD;
if( !p_sys->b_header )
p_pic->i_flags |= BLOCK_FLAG_PREROLL;
/* reset after output */
p_sys->i_frame_dts = VLC_TS_INVALID;
p_sys->i_frame_pts = VLC_TS_INVALID;
p_sys->i_dpb_output_delay = 0;
p_sys->slice.i_frame_type = 0;
p_sys->p_frame = NULL;
p_sys->pp_frame_last = &p_sys->p_frame;
p_sys->b_frame_sps = false;
p_sys->b_frame_pps = false;
p_sys->b_slice = false;
/* CC */
cc_storage_commit( p_sys->p_ccs, p_pic );
return p_pic;
}
/*****************************************************************************
* ParseNALBlock: parses annexB type NALs
* All p_frag blocks are required to start with 0 0 0 1 4-byte startcode
*****************************************************************************/
static block_t *ParseNALBlock( decoder_t *p_dec, bool *pb_ts_used, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic = NULL;
bool b_new_picture = false;
const int i_nal_ref_idc = (p_frag->p_buffer[4] >> 5)&0x03;
const int i_nal_type = p_frag->p_buffer[4]&0x1f;
const mtime_t i_frag_dts = p_frag->i_dts;
const mtime_t i_frag_pts = p_frag->i_pts;
if( p_sys->b_slice && ( !p_sys->b_sps || !p_sys->b_pps ) )
{
block_ChainRelease( p_sys->p_frame );
msg_Warn( p_dec, "waiting for SPS/PPS" );
/* Reset context */
p_sys->slice.i_frame_type = 0;
p_sys->p_frame = NULL;
p_sys->pp_frame_last = &p_sys->p_frame;
p_sys->b_frame_sps = false;
p_sys->b_frame_pps = false;
p_sys->b_slice = false;
cc_storage_reset( p_sys->p_ccs );
}
if( ( !p_sys->b_sps || !p_sys->b_pps ) &&
i_nal_type >= H264_NAL_SLICE && i_nal_type <= H264_NAL_SLICE_IDR )
{
p_sys->b_slice = true;
/* Fragment will be discarded later on */
}
else if( i_nal_type >= H264_NAL_SLICE && i_nal_type <= H264_NAL_SLICE_IDR )
{
slice_t slice;
if(ParseSlice( p_dec, &b_new_picture, &slice, i_nal_ref_idc, i_nal_type, p_frag ))
{
/* */
if( b_new_picture && p_sys->b_slice )
p_pic = OutputPicture( p_dec );
/* */
p_sys->slice = slice;
p_sys->b_slice = true;
}
}
else if( i_nal_type == H264_NAL_SPS )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
p_sys->b_frame_sps = true;
PutSPS( p_dec, p_frag );
/* Do not append the SPS because we will insert it on keyframes */
p_frag = NULL;
}
else if( i_nal_type == H264_NAL_PPS )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
p_sys->b_frame_pps = true;
PutPPS( p_dec, p_frag );
/* Do not append the PPS because we will insert it on keyframes */
p_frag = NULL;
}
else if( i_nal_type == H264_NAL_AU_DELIMITER ||
i_nal_type == H264_NAL_SEI ||
( i_nal_type >= H264_NAL_PREFIX && i_nal_type <= H264_NAL_RESERVED_18 ) )
{
if( p_sys->b_slice )
p_pic = OutputPicture( p_dec );
/* Parse SEI for CC support */
if( i_nal_type == H264_NAL_SEI )
{
HxxxParse_AnnexB_SEI( p_frag->p_buffer, p_frag->i_buffer,
1 /* nal header */, ParseSeiCallback, p_dec );
}
else if( i_nal_type == H264_NAL_AU_DELIMITER )
{
if( p_sys->p_frame && (p_sys->p_frame->i_flags & BLOCK_FLAG_PRIVATE_AUD) )
{
block_Release( p_frag );
p_frag = NULL;
}
else
{
p_frag->i_flags |= BLOCK_FLAG_PRIVATE_AUD;
}
}
}
/* Append the block */
if( p_frag )
block_ChainLastAppend( &p_sys->pp_frame_last, p_frag );
*pb_ts_used = false;
if( p_sys->i_frame_dts <= VLC_TS_INVALID &&
p_sys->i_frame_pts <= VLC_TS_INVALID && b_new_picture )
{
p_sys->i_frame_dts = i_frag_dts;
p_sys->i_frame_pts = i_frag_pts;
*pb_ts_used = true;
}
return p_pic;
}
/* ParseIDU: parse an Independent Decoding Unit */
static block_t *ParseIDU( decoder_t *p_dec, bool *pb_used_ts, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic;
const idu_type_t idu = (const idu_type_t)(p_frag->p_buffer[3]); // sunqueen modify
*pb_used_ts = false;
if( !p_sys->b_sequence_header && idu != IDU_TYPE_SEQUENCE_HEADER )
{
msg_Warn( p_dec, "waiting for sequence header" );
block_Release( p_frag );
return NULL;
}
if( p_sys->b_sequence_header && !p_sys->b_entry_point && idu != IDU_TYPE_ENTRY_POINT )
{
msg_Warn( p_dec, "waiting for entry point" );
block_Release( p_frag );
return NULL;
}
/* TODO we do not gather ENTRY_POINT and SEQUENCE_DATA user data
* But It should not be a problem for decoder */
/* Do we have completed a frame */
p_pic = NULL;
if( p_sys->b_frame &&
idu != IDU_TYPE_FRAME_USER_DATA &&
idu != IDU_TYPE_FIELD && idu != IDU_TYPE_FIELD_USER_DATA &&
idu != IDU_TYPE_SLICE && idu != IDU_TYPE_SLICE_USER_DATA &&
idu != IDU_TYPE_END_OF_SEQUENCE )
{
/* Prepend SH and EP on I */
if( p_sys->p_frame->i_flags & BLOCK_FLAG_TYPE_I )
{
block_t *p_list = block_Duplicate( p_sys->sh.p_sh );
block_ChainAppend( &p_list, block_Duplicate( p_sys->ep.p_ep ) );
block_ChainAppend( &p_list, p_sys->p_frame );
p_list->i_flags = p_sys->p_frame->i_flags;
p_sys->p_frame = p_list;
}
/* */
p_pic = block_ChainGather( p_sys->p_frame );
p_pic->i_dts = p_sys->i_frame_dts;
p_pic->i_pts = p_sys->i_frame_pts;
/* */
if( p_pic->i_dts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_pic->i_dts;
/* We can interpolate dts/pts only if we have a frame rate */
if( p_dec->fmt_out.video.i_frame_rate != 0 && p_dec->fmt_out.video.i_frame_rate_base != 0 )
{
if( p_sys->i_interpolated_dts > VLC_TS_INVALID )
p_sys->i_interpolated_dts += INT64_C(1000000) *
p_dec->fmt_out.video.i_frame_rate_base /
p_dec->fmt_out.video.i_frame_rate;
//msg_Dbg( p_dec, "-------------- XXX0 dts=%"PRId64" pts=%"PRId64" interpolated=%"PRId64,
// p_pic->i_dts, p_pic->i_pts, p_sys->i_interpolated_dts );
if( p_pic->i_dts <= VLC_TS_INVALID )
p_pic->i_dts = p_sys->i_interpolated_dts;
if( p_pic->i_pts <= VLC_TS_INVALID )
{
if( !p_sys->sh.b_has_bframe || (p_pic->i_flags & BLOCK_FLAG_TYPE_B ) )
p_pic->i_pts = p_pic->i_dts;
/* TODO compute pts for other case */
}
}
//msg_Dbg( p_dec, "-------------- dts=%"PRId64" pts=%"PRId64, p_pic->i_dts, p_pic->i_pts );
/* Reset context */
p_sys->b_frame = false;
p_sys->i_frame_dts = VLC_TS_INVALID;
p_sys->i_frame_pts = VLC_TS_INVALID;
p_sys->p_frame = NULL;
p_sys->pp_last = &p_sys->p_frame;
}
/* */
if( p_sys->i_frame_dts <= VLC_TS_INVALID && p_sys->i_frame_pts <= VLC_TS_INVALID )
{
p_sys->i_frame_dts = p_frag->i_dts;
p_sys->i_frame_pts = p_frag->i_pts;
*pb_used_ts = true;
}
/* We will add back SH and EP on I frames */
block_t *p_release = NULL;
if( idu != IDU_TYPE_SEQUENCE_HEADER && idu != IDU_TYPE_ENTRY_POINT )
block_ChainLastAppend( &p_sys->pp_last, p_frag );
else
p_release = p_frag;
/* Parse IDU */
if( idu == IDU_TYPE_SEQUENCE_HEADER )
{
es_format_t *p_es = &p_dec->fmt_out;
bs_t s;
int i_profile;
uint8_t ridu[32];
int i_ridu = sizeof(ridu);
/* */
if( p_sys->sh.p_sh )
block_Release( p_sys->sh.p_sh );
p_sys->sh.p_sh = block_Duplicate( p_frag );
/* Extract the raw IDU */
DecodeRIDU( ridu, &i_ridu, &p_frag->p_buffer[4], p_frag->i_buffer - 4 );
/* Auto detect VC-1_SPMP_PESpacket_PayloadFormatHeader (SMPTE RP 227) for simple/main profile
* TODO find a test case and valid it */
if( i_ridu > 4 && (ridu[0]&0x80) == 0 ) /* for advanced profile, the first bit is 1 */
{
video_format_t *p_v = &p_dec->fmt_in.video;
const size_t i_potential_width = GetWBE( &ridu[0] );
const size_t i_potential_height = GetWBE( &ridu[2] );
if( i_potential_width >= 2 && i_potential_width <= 8192 &&
i_potential_height >= 2 && i_potential_height <= 8192 )
{
if( ( p_v->i_width <= 0 && p_v->i_height <= 0 ) ||
( p_v->i_width == i_potential_width && p_v->i_height == i_potential_height ) )
{
static const uint8_t startcode[4] = { 0x00, 0x00, 0x01, IDU_TYPE_SEQUENCE_HEADER };
p_es->video.i_width = i_potential_width;
p_es->video.i_height = i_potential_height;
/* Remove it */
p_frag->p_buffer += 4;
p_frag->i_buffer -= 4;
memcpy( p_frag->p_buffer, startcode, sizeof(startcode) );
}
}
}
/* Parse it */
bs_init( &s, ridu, i_ridu );
i_profile = bs_read( &s, 2 );
if( i_profile == 3 )
{
const int i_level = bs_read( &s, 3 );
/* Advanced profile */
p_sys->sh.b_advanced_profile = true;
p_sys->sh.b_range_reduction = false;
p_sys->sh.b_has_bframe = true;
bs_skip( &s, 2+3+5+1 ); // chroma format + frame rate Q + bit rate Q + postprocflag
p_es->video.i_width = 2*bs_read( &s, 12 )+2;
p_es->video.i_height = 2*bs_read( &s, 12 )+2;
if( !p_sys->b_sequence_header )
msg_Dbg( p_dec, "found sequence header for advanced profile level L%d resolution %dx%d",
i_level, p_es->video.i_width, p_es->video.i_height);
bs_skip( &s, 1 );// pulldown
p_sys->sh.b_interlaced = bs_read( &s, 1 );
bs_skip( &s, 1 );// frame counter
p_sys->sh.b_frame_interpolation = bs_read( &s, 1 );
bs_skip( &s, 1 ); // Reserved
bs_skip( &s, 1 ); // Psf
if( bs_read( &s, 1 ) ) /* Display extension */
{
const int i_display_width = bs_read( &s, 14 )+1;
const int i_display_height = bs_read( &s, 14 )+1;
p_es->video.i_sar_num = i_display_width * p_es->video.i_height;
p_es->video.i_sar_den = i_display_height * p_es->video.i_width;
if( !p_sys->b_sequence_header )
msg_Dbg( p_dec, "display size %dx%d", i_display_width, i_display_height );
if( bs_read( &s, 1 ) ) /* Pixel aspect ratio (PAR/SAR) */
{
static const int p_ar[16][2] = {
{ 0, 0}, { 1, 1}, {12,11}, {10,11}, {16,11}, {40,33},
{24,11}, {20,11}, {32,11}, {80,33}, {18,11}, {15,11},
{64,33}, {160,99},{ 0, 0}, { 0, 0}
};
int i_ar = bs_read( &s, 4 );
unsigned i_ar_w, i_ar_h;
if( i_ar == 15 )
{
i_ar_w = bs_read( &s, 8 );
i_ar_h = bs_read( &s, 8 );
}
else
{
i_ar_w = p_ar[i_ar][0];
i_ar_h = p_ar[i_ar][1];
}
vlc_ureduce( &i_ar_w, &i_ar_h, i_ar_w, i_ar_h, 0 );
if( !p_sys->b_sequence_header )
msg_Dbg( p_dec, "aspect ratio %d:%d", i_ar_w, i_ar_h );
}
}
if( bs_read( &s, 1 ) ) /* Frame rate */
{
int i_fps_num = 0;
int i_fps_den = 0;
if( bs_read( &s, 1 ) )
{
i_fps_num = bs_read( &s, 16 )+1;
i_fps_den = 32;
}
else
{
const int i_nr = bs_read( &s, 8 );
const int i_dn = bs_read( &s, 4 );
switch( i_nr )
{
case 1: i_fps_num = 24000; break;
case 2: i_fps_num = 25000; break;
case 3: i_fps_num = 30000; break;
case 4: i_fps_num = 50000; break;
case 5: i_fps_num = 60000; break;
case 6: i_fps_num = 48000; break;
case 7: i_fps_num = 72000; break;
}
switch( i_dn )
{
case 1: i_fps_den = 1000; break;
case 2: i_fps_den = 1001; break;
}
}
if( i_fps_num != 0 && i_fps_den != 0 )
vlc_ureduce( &p_es->video.i_frame_rate, &p_es->video.i_frame_rate_base, i_fps_num, i_fps_den, 0 );
if( !p_sys->b_sequence_header )
msg_Dbg( p_dec, "frame rate %d/%d", p_es->video.i_frame_rate, p_es->video.i_frame_rate_base );
}
}
else
{
/* Simple and main profile */
p_sys->sh.b_advanced_profile = false;
p_sys->sh.b_interlaced = false;
if( !p_sys->b_sequence_header )
msg_Dbg( p_dec, "found sequence header for %s profile", i_profile == 0 ? "simple" : "main" );
bs_skip( &s, 2+3+5+1+1+ // reserved + frame rate Q + bit rate Q + loop filter + reserved
1+1+1+1+2+ // multiresolution + reserved + fast uv mc + extended mv + dquant
1+1+1+1 ); // variable size transform + reserved + overlap + sync marker
p_sys->sh.b_range_reduction = bs_read( &s, 1 );
if( bs_read( &s, 3 ) > 0 )
p_sys->sh.b_has_bframe = true;
else
p_sys->sh.b_has_bframe = false;
bs_skip( &s, 2 ); // quantizer
p_sys->sh.b_frame_interpolation = bs_read( &s, 1 );
}
p_sys->b_sequence_header = true;
BuildExtraData( p_dec );
}
else if( idu == IDU_TYPE_ENTRY_POINT )
{
if( p_sys->ep.p_ep )
block_Release( p_sys->ep.p_ep );
p_sys->ep.p_ep = block_Duplicate( p_frag );
if( !p_sys->b_entry_point )
msg_Dbg( p_dec, "found entry point" );
p_sys->b_entry_point = true;
BuildExtraData( p_dec );
}
else if( idu == IDU_TYPE_FRAME )
{
bs_t s;
uint8_t ridu[8];
int i_ridu = sizeof(ridu);
/* Extract the raw IDU */
DecodeRIDU( ridu, &i_ridu, &p_frag->p_buffer[4], p_frag->i_buffer - 4 );
/* Parse it + interpolate pts/dts if possible */
bs_init( &s, ridu, i_ridu );
if( p_sys->sh.b_advanced_profile )
{
int i_fcm = 0;
if( p_sys->sh.b_interlaced )
{
if( bs_read( &s, 1 ) )
{
if( bs_read( &s, 1 ) )
i_fcm = 1; /* interlaced field */
else
i_fcm = 2; /* interlaced frame */
}
}
if( i_fcm == 1 ) /*interlaced field */
{
/* XXX for mixed I/P we should check reference usage before marking them I (too much work) */
switch( bs_read( &s, 3 ) )
{
case 0: /* II */
case 1: /* IP */
case 2: /* PI */
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
break;
case 3: /* PP */
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_P;
break;
case 4: /* BB */
case 5: /* BBi */
case 6: /* BiB */
case 7: /* BiBi */
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_B;
break;
}
}
else
{
if( !bs_read( &s, 1 ) )
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_P;
else if( !bs_read( &s, 1 ) )
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_B;
else if( !bs_read( &s, 1 ) )
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
else if( !bs_read( &s, 1 ) )
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_B; /* Bi */
else
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_P; /* P Skip */
}
}
else
{
if( p_sys->sh.b_frame_interpolation )
bs_skip( &s, 1 ); // interpolate
bs_skip( &s, 2 ); // frame count
if( p_sys->sh.b_range_reduction )
bs_skip( &s, 1 ); // range reduction
if( bs_read( &s, 1 ) )
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_P;
else if( !p_sys->sh.b_has_bframe || bs_read( &s, 1 ) )
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
else
p_sys->p_frame->i_flags |= BLOCK_FLAG_TYPE_B;
}
p_sys->b_frame = true;
}
if( p_release )
block_Release( p_release );
return p_pic;
}
static block_t * ts_sections_assembler_Append( ts_sections_assembler_t *p_as, block_t *p_content )
{
const bool b_short = !( p_content->p_buffer[1] & 0x80 );
const uint16_t i_private_length = ((p_content->p_buffer[1] & 0x0f) << 8) | p_content->p_buffer[2];
if( b_short )
{
/* Short, unsegmented section */
if(unlikely(( i_private_length > 0xFFD || i_private_length > p_content->i_buffer - 3 )))
{
block_Release( p_content );
return NULL;
}
if( !p_as->b_raw )
{
p_content->p_buffer += 3;
p_content->i_buffer = i_private_length;
}
return p_content;
}
else
{
/* Payload can span on multiple sections */
if (unlikely( p_content->i_buffer < (size_t)12 + i_private_length))
{
block_Release( p_content );
return NULL;
}
/* TODO: CRC32 */
const uint8_t i_version = ( p_content->p_buffer[5] & 0x3F ) >> 1;
const uint8_t i_current = p_content->p_buffer[5] & 0x01;
const uint8_t i_section = p_content->p_buffer[6];
const uint8_t i_section_last = p_content->p_buffer[7];
if( !p_as->b_raw )
{
p_content->p_buffer += 3 + 5;
p_content->i_buffer = i_private_length - 4;
}
if( !i_current ||
( p_as->i_version != -1 && i_version != p_as->i_version ) || /* Only merge same version */
p_as->i_prev_version == i_version || /* No duplicates */
i_section > i_section_last )
{
block_Release( p_content );
return NULL;
}
if( i_section != p_as->i_prev_section + 1 ) /* first or unfinished sections gathering */
{
ts_sections_assembler_Reset( p_as, false );
if( i_section > 0 || i_version == p_as->i_prev_version )
{
block_Release( p_content );
return NULL;
}
}
p_as->i_version = i_version;
p_as->i_prev_section = i_section;
/* Add one more section */
block_ChainLastAppend( &p_as->pp_sections_tail, p_content );
/* We finished gathering our sections */
if( i_section == i_section_last )
{
block_t *p_all_sections = block_ChainGather( p_as->p_sections );
p_as->p_sections = NULL;
p_as->pp_sections_tail = &p_as->p_sections;
p_as->i_prev_version = i_version;
ts_sections_assembler_Reset( p_as, false );
return p_all_sections;
}
}
return NULL;
}
static block_t *OutputPicture( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic = NULL;
block_t **pp_pic_last = &p_pic;
if( unlikely(!p_sys->p_frame) )
{
assert( p_sys->p_frame );
return NULL;
}
/* Bind matched/referred PPS and SPS */
const h264_picture_parameter_set_t *p_pps = p_sys->p_active_pps;
const h264_sequence_parameter_set_t *p_sps = p_sys->p_active_sps;
if( !p_pps || !p_sps )
{
DropStoredNAL( p_sys );
return NULL;
}
if( !p_sys->b_recovered && p_sys->i_recoveryfnum == UINT_MAX &&
p_sys->i_recovery_frame_cnt == UINT_MAX && p_sys->slice.type == H264_SLICE_TYPE_I )
{
/* No way to recover using SEI, just sync on I Slice */
p_sys->b_recovered = true;
}
bool b_need_sps_pps = p_sys->slice.type == H264_SLICE_TYPE_I &&
p_sys->p_active_pps && p_sys->p_active_sps;
/* Handle SEI recovery */
if ( !p_sys->b_recovered && p_sys->i_recovery_frame_cnt != UINT_MAX &&
p_sys->i_recoveryfnum == UINT_MAX )
{
p_sys->i_recoveryfnum = p_sys->slice.i_frame_num + p_sys->i_recovery_frame_cnt;
b_need_sps_pps = true; /* SPS/PPS must be inserted for SEI recovery */
msg_Dbg( p_dec, "Recovering using SEI, prerolling %u reference pics", p_sys->i_recovery_frame_cnt );
}
if( p_sys->i_recoveryfnum != UINT_MAX )
{
assert(p_sys->b_recovered == false);
const unsigned maxFrameNum = 1 << (p_sps->i_log2_max_frame_num + 4);
if( (p_sys->i_recoveryfnum > maxFrameNum &&
(unsigned)p_sys->slice.i_frame_num <= maxFrameNum / 2 &&
(unsigned)p_sys->slice.i_frame_num >= p_sys->i_recoveryfnum % maxFrameNum ) ||
(unsigned)p_sys->slice.i_frame_num >= p_sys->i_recoveryfnum )
{
p_sys->i_recoveryfnum = UINT_MAX;
p_sys->b_recovered = true;
msg_Dbg( p_dec, "Recovery from SEI recovery point complete" );
}
}
/* Gather PPS/SPS if required */
block_t *p_xpsnal = NULL;
block_t **pp_xpsnal_tail = &p_xpsnal;
if( b_need_sps_pps || p_sys->b_new_sps || p_sys->b_new_pps )
{
for( int i = 0; i <= H264_SPS_ID_MAX && (b_need_sps_pps || p_sys->b_new_sps); i++ )
{
if( p_sys->sps[i].p_block )
block_ChainLastAppend( &pp_xpsnal_tail, block_Duplicate( p_sys->sps[i].p_block ) );
}
for( int i = 0; i < H264_PPS_ID_MAX && (b_need_sps_pps || p_sys->b_new_pps); i++ )
{
if( p_sys->pps[i].p_block )
block_ChainLastAppend( &pp_xpsnal_tail, block_Duplicate( p_sys->pps[i].p_block ) );
}
}
/* Now rebuild NAL Sequence, inserting PPS/SPS if any */
if( p_sys->p_frame->i_flags & BLOCK_FLAG_PRIVATE_AUD )
{
block_t *p_au = p_sys->p_frame;
p_sys->p_frame = p_au->p_next;
p_au->p_next = NULL;
p_au->i_flags &= ~BLOCK_FLAG_PRIVATE_AUD;
block_ChainLastAppend( &pp_pic_last, p_au );
}
if( p_xpsnal )
block_ChainLastAppend( &pp_pic_last, p_xpsnal );
if( p_sys->p_sei )
block_ChainLastAppend( &pp_pic_last, p_sys->p_sei );
assert( p_sys->p_frame );
if( p_sys->p_frame )
block_ChainLastAppend( &pp_pic_last, p_sys->p_frame );
/* Reset chains, now empty */
p_sys->p_frame = NULL;
p_sys->pp_frame_last = &p_sys->p_frame;
p_sys->p_sei = NULL;
p_sys->pp_sei_last = &p_sys->p_sei;
p_pic = block_ChainGather( p_pic );
if( !p_pic )
return NULL;
/* for PTS Fixup, interlaced fields (multiple AU/block) */
int tFOC = 0, bFOC = 0, PictureOrderCount = 0;
h264_compute_poc( p_sps, &p_sys->slice, &p_sys->pocctx, &PictureOrderCount, &tFOC, &bFOC );
unsigned i_num_clock_ts = h264_get_num_ts( p_sps, &p_sys->slice, p_sys->i_pic_struct, tFOC, bFOC );
if( p_sps->frame_mbs_only_flag == 0 && p_sps->vui.b_pic_struct_present_flag )
{
switch( p_sys->i_pic_struct )
{
/* Top and Bottom field slices */
case 1:
case 2:
p_pic->i_flags |= BLOCK_FLAG_SINGLE_FIELD;
p_pic->i_flags |= (!p_sys->slice.i_bottom_field_flag) ? BLOCK_FLAG_TOP_FIELD_FIRST
: BLOCK_FLAG_BOTTOM_FIELD_FIRST;
break;
/* Each of the following slices contains multiple fields */
case 3:
p_pic->i_flags |= BLOCK_FLAG_TOP_FIELD_FIRST;
break;
case 4:
p_pic->i_flags |= BLOCK_FLAG_BOTTOM_FIELD_FIRST;
break;
case 5:
p_pic->i_flags |= BLOCK_FLAG_TOP_FIELD_FIRST;
break;
case 6:
p_pic->i_flags |= BLOCK_FLAG_BOTTOM_FIELD_FIRST;
break;
default:
break;
}
}
/* set dts/pts to current block timestamps */
p_pic->i_dts = p_sys->i_frame_dts;
p_pic->i_pts = p_sys->i_frame_pts;
/* Fixup missing timestamps after split (multiple AU/block)*/
if( p_pic->i_dts <= VLC_TS_INVALID )
p_pic->i_dts = date_Get( &p_sys->dts );
if( p_sys->slice.type == H264_SLICE_TYPE_I )
p_sys->prevdatedpoc.pts = VLC_TS_INVALID;
if( p_pic->i_pts == VLC_TS_INVALID )
{
if( p_sys->prevdatedpoc.pts > VLC_TS_INVALID &&
date_Get( &p_sys->dts ) != VLC_TS_INVALID )
{
date_t pts = p_sys->dts;
date_Set( &pts, p_sys->prevdatedpoc.pts );
int diff = tFOC - p_sys->prevdatedpoc.num;
if( diff > 0 )
date_Increment( &pts, diff );
else
date_Decrement( &pts, -diff );
p_pic->i_pts = date_Get( &pts );
}
/* In case there's no PTS at all */
else if( p_sys->slice.i_nal_ref_idc == 0 &&
p_sys->slice.type == H264_SLICE_TYPE_B )
{
p_pic->i_pts = p_pic->i_dts;
}
else if( p_sys->slice.type == H264_SLICE_TYPE_I &&
date_Get( &p_sys->dts ) != VLC_TS_INVALID )
{
/* Hell no PTS on IDR. We're totally blind */
date_t pts = p_sys->dts;
date_Increment( &pts, 2 );
p_pic->i_pts = date_Get( &pts );
}
}
if( p_pic->i_pts > VLC_TS_INVALID )
{
p_sys->prevdatedpoc.pts = p_pic->i_pts;
p_sys->prevdatedpoc.num = PictureOrderCount;
}
if( p_pic->i_length == 0 )
{
if( p_sps->vui.i_time_scale )
{
p_pic->i_length = CLOCK_FREQ * i_num_clock_ts *
p_sps->vui.i_num_units_in_tick / p_sps->vui.i_time_scale;
}
else
{
date_t next = p_sys->dts;
date_Increment( &next, i_num_clock_ts );
p_pic->i_length = date_Get( &next ) - date_Get( &p_sys->dts );
}
}
#if 0
msg_Err(p_dec, "F/BOC %d/%d POC %d %d rec %d flags %x ref%d fn %d fp %d %d pts %ld len %ld",
tFOC, bFOC, PictureOrderCount,
p_sys->slice.type, p_sys->b_recovered, p_pic->i_flags,
p_sys->slice.i_nal_ref_idc, p_sys->slice.i_frame_num, p_sys->slice.i_field_pic_flag,
p_pic->i_pts - p_pic->i_dts, p_pic->i_pts % (100*CLOCK_FREQ), p_pic->i_length);
#endif
/* save for next pic fixups */
if( date_Get( &p_sys->dts ) != VLC_TS_INVALID )
{
if( p_sys->i_next_block_flags & BLOCK_FLAG_DISCONTINUITY )
date_Set( &p_sys->dts, VLC_TS_INVALID );
else
date_Increment( &p_sys->dts, i_num_clock_ts );
}
if( p_pic )
{
p_pic->i_flags |= p_sys->i_next_block_flags;
p_sys->i_next_block_flags = 0;
}
switch( p_sys->slice.type )
{
case H264_SLICE_TYPE_P:
p_pic->i_flags |= BLOCK_FLAG_TYPE_P;
break;
case H264_SLICE_TYPE_B:
p_pic->i_flags |= BLOCK_FLAG_TYPE_B;
break;
case H264_SLICE_TYPE_I:
p_pic->i_flags |= BLOCK_FLAG_TYPE_I;
default:
break;
}
if( !p_sys->b_recovered )
{
if( p_sys->i_recoveryfnum != UINT_MAX ) /* recovering from SEI */
p_pic->i_flags |= BLOCK_FLAG_PREROLL;
else
p_pic->i_flags |= BLOCK_FLAG_DROP;
}
p_pic->i_flags &= ~BLOCK_FLAG_PRIVATE_AUD;
/* reset after output */
p_sys->i_frame_dts = VLC_TS_INVALID;
p_sys->i_frame_pts = VLC_TS_INVALID;
p_sys->i_dpb_output_delay = 0;
p_sys->i_pic_struct = UINT8_MAX;
p_sys->i_recovery_frame_cnt = UINT_MAX;
p_sys->slice.type = H264_SLICE_TYPE_UNKNOWN;
p_sys->p_sei = NULL;
p_sys->pp_sei_last = &p_sys->p_sei;
p_sys->b_new_sps = false;
p_sys->b_new_pps = false;
p_sys->b_slice = false;
/* CC */
cc_storage_commit( p_sys->p_ccs, p_pic );
return p_pic;
}
static block_t *ParseVCL(decoder_t *p_dec, uint8_t i_nal_type, block_t *p_frag)
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_frame = NULL;
const uint8_t *p_buffer = p_frag->p_buffer;
size_t i_buffer = p_frag->i_buffer;
if(unlikely(!hxxx_strip_AnnexB_startcode(&p_buffer, &i_buffer) || i_buffer < 3))
{
block_ChainAppend(&p_sys->p_frame, p_frag); /* might corrupt */
return NULL;
}
bool b_first_slice_in_pic = p_buffer[2] & 0x80;
if (b_first_slice_in_pic)
{
if(p_sys->p_frame)
{
/* Starting new frame, gather and return previous frame data */
p_frame = block_ChainGather(p_sys->p_frame);
p_sys->p_frame = NULL;
p_sys->pp_frame_last = &p_sys->p_frame;
}
switch(i_nal_type)
{
case HEVC_NAL_BLA_W_LP:
case HEVC_NAL_BLA_W_RADL:
case HEVC_NAL_BLA_N_LP:
case HEVC_NAL_IDR_W_RADL:
case HEVC_NAL_IDR_N_LP:
case HEVC_NAL_CRA:
p_frag->i_flags |= BLOCK_FLAG_TYPE_I;
break;
default:
{
hevc_slice_segment_header_t *p_sli = hevc_decode_slice_header( p_buffer, i_buffer, true,
p_sys->rgi_p_decsps, p_sys->rgi_p_decpps );
if( p_sli )
{
enum hevc_slice_type_e type;
if( hevc_get_slice_type( p_sli, &type ) )
{
if( type == HEVC_SLICE_TYPE_P )
p_frag->i_flags |= BLOCK_FLAG_TYPE_P;
else
p_frag->i_flags |= BLOCK_FLAG_TYPE_B;
}
hevc_rbsp_release_slice_header( p_sli );
}
else p_frag->i_flags |= BLOCK_FLAG_TYPE_B;
}
break;
}
}
block_ChainLastAppend(&p_sys->pp_frame_last, p_frag);
return p_frame;
}
/*****************************************************************************
* ParseMPEGBlock: Re-assemble fragments into a block containing a picture
*****************************************************************************/
static block_t *ParseMPEGBlock( decoder_t *p_dec, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic = NULL;
if( p_frag->p_buffer[3] == 0xB0 || p_frag->p_buffer[3] == 0xB1 || p_frag->p_buffer[3] == 0xB2 )
{ /* VOS and USERDATA */
#if 0
/* Remove VOS start/end code from the original stream */
block_Release( p_frag );
#else
/* Append the block for now since ts/ps muxers rely on VOL
* being present in the stream */
block_ChainLastAppend( &p_sys->pp_last, p_frag );
#endif
return NULL;
}
if( p_frag->p_buffer[3] >= 0x20 && p_frag->p_buffer[3] <= 0x2f )
{
/* Copy the complete VOL */
if( (size_t)p_dec->fmt_out.i_extra != p_frag->i_buffer )
{
p_dec->fmt_out.p_extra =
xrealloc( p_dec->fmt_out.p_extra, p_frag->i_buffer );
p_dec->fmt_out.i_extra = p_frag->i_buffer;
}
memcpy( p_dec->fmt_out.p_extra, p_frag->p_buffer, p_frag->i_buffer );
ParseVOL( p_dec, &p_dec->fmt_out,
p_dec->fmt_out.p_extra, p_dec->fmt_out.i_extra );
#if 0
/* Remove from the original stream */
block_Release( p_frag );
#else
/* Append the block for now since ts/ps muxers rely on VOL
* being present in the stream */
block_ChainLastAppend( &p_sys->pp_last, p_frag );
#endif
return NULL;
}
else
{
if( !p_dec->fmt_out.i_extra )
{
msg_Warn( p_dec, "waiting for VOL" );
block_Release( p_frag );
return NULL;
}
/* Append the block */
block_ChainLastAppend( &p_sys->pp_last, p_frag );
}
if( p_frag->p_buffer[3] == 0xb6 &&
ParseVOP( p_dec, p_frag ) == VLC_SUCCESS )
{
/* We are dealing with a VOP */
p_pic = block_ChainGather( p_sys->p_frame );
p_pic->i_flags = p_sys->i_flags;
p_pic->i_pts = p_sys->i_interpolated_pts;
p_pic->i_dts = p_sys->i_interpolated_dts;
if ( p_dec->fmt_out.video.i_cpb_buffer && p_dec->fmt_out.i_bitrate )
{
mtime_t i_cpb_delay = p_sys->i_vbv_occupancy * INT64_C(1000000)
/ p_dec->fmt_out.i_bitrate;
p_pic->i_delay = i_cpb_delay;
}
else
p_pic->i_delay = DEFAULT_DELAY * 1000;
/* Reset context */
p_sys->p_frame = NULL;
p_sys->pp_last = &p_sys->p_frame;
}
return p_pic;
}
/*****************************************************************************
* DecodeAudio: Called to decode one frame
*****************************************************************************/
static block_t *DecodeAudio( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
AVCodecContext *ctx = p_sys->p_context;
AVFrame *frame = NULL;
block_t *p_block = NULL;
if( !ctx->extradata_size && p_dec->fmt_in.i_extra && p_sys->b_delayed_open)
{
InitDecoderConfig( p_dec, ctx );
OpenAudioCodec( p_dec );
}
if( p_sys->b_delayed_open )
{
if( pp_block )
p_block = *pp_block;
goto drop;
}
/* Flushing or decoding, we return any block ready from multiple frames output */
if( p_sys->p_decoded )
return DequeueOneDecodedFrame( p_sys );
if( pp_block == NULL ) /* Drain request */
{
/* we don't need to care about return val */
(void) avcodec_send_packet( ctx, NULL );
}
else
{
p_block = *pp_block;
}
if( p_block )
{
if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
{
Flush( p_dec );
goto drop;
}
if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
{
date_Set( &p_sys->end_date, VLC_TS_INVALID );
}
/* We've just started the stream, wait for the first PTS. */
if( !date_Get( &p_sys->end_date ) && p_block->i_pts <= VLC_TS_INVALID )
goto drop;
if( p_block->i_buffer <= 0 )
goto drop;
if( (p_block->i_flags & BLOCK_FLAG_PRIVATE_REALLOCATED) == 0 )
{
p_block = block_Realloc( p_block, 0, p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
if( !p_block )
return NULL;
*pp_block = p_block;
p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
memset( &p_block->p_buffer[p_block->i_buffer], 0, FF_INPUT_BUFFER_PADDING_SIZE );
p_block->i_flags |= BLOCK_FLAG_PRIVATE_REALLOCATED;
}
}
frame = av_frame_alloc();
if (unlikely(frame == NULL))
goto end;
for( int ret = 0; ret == 0; )
{
/* Feed in the loop as buffer could have been full on first iterations */
if( p_block )
{
AVPacket pkt;
av_init_packet( &pkt );
pkt.data = p_block->p_buffer;
pkt.size = p_block->i_buffer;
ret = avcodec_send_packet( ctx, &pkt );
if( ret == 0 ) /* Block has been consumed */
{
/* Only set new pts from input block if it has been used,
* otherwise let it be through interpolation */
if( p_block->i_pts > date_Get( &p_sys->end_date ) )
{
date_Set( &p_sys->end_date, p_block->i_pts );
}
block_Release( p_block );
*pp_block = p_block = NULL;
}
else if ( ret != AVERROR(EAGAIN) ) /* Errors other than buffer full */
{
if( ret == AVERROR(ENOMEM) || ret == AVERROR(EINVAL) )
goto end;
else
goto drop;
}
}
/* Try to read one or multiple frames */
ret = avcodec_receive_frame( ctx, frame );
if( ret == 0 )
{
/* checks and init from first decoded frame */
if( ctx->channels <= 0 || ctx->channels > 8 || ctx->sample_rate <= 0 )
{
msg_Warn( p_dec, "invalid audio properties channels count %d, sample rate %d",
ctx->channels, ctx->sample_rate );
goto drop;
}
else if( p_dec->fmt_out.audio.i_rate != (unsigned int)ctx->sample_rate )
{
date_Init( &p_sys->end_date, ctx->sample_rate, 1 );
}
SetupOutputFormat( p_dec, true );
if( decoder_UpdateAudioFormat( p_dec ) )
goto drop;
block_t *p_converted = ConvertAVFrame( p_dec, frame ); /* Consumes frame */
if( p_converted )
{
/* Silent unwanted samples */
if( p_sys->i_reject_count > 0 )
{
memset( p_converted->p_buffer, 0, p_converted->i_buffer );
p_sys->i_reject_count--;
}
p_converted->i_buffer = p_converted->i_nb_samples
* p_dec->fmt_out.audio.i_bytes_per_frame;
p_converted->i_pts = date_Get( &p_sys->end_date );
p_converted->i_length = date_Increment( &p_sys->end_date,
p_converted->i_nb_samples ) - p_converted->i_pts;
block_ChainLastAppend( &p_sys->pp_decoded_last, p_converted );
}
/* Prepare new frame */
frame = av_frame_alloc();
if (unlikely(frame == NULL))
break;
}
else av_frame_free( &frame );
};
return ( p_sys->p_decoded ) ? DequeueOneDecodedFrame( p_sys ) : NULL;
end:
p_dec->b_error = true;
if( pp_block )
{
assert( *pp_block == p_block );
*pp_block = NULL;
}
drop:
if( p_block != NULL )
block_Release(p_block);
if( frame != NULL )
av_frame_free( &frame );
return NULL;
}