static block_t *ParseNALBlock( decoder_t *p_dec, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_pic = NULL;
const int i_nal_ref_idc = (p_frag->p_buffer[3] >> 5)&0x03;
const int i_nal_type = p_frag->p_buffer[3]&0x1f;
if( p_sys->b_slice && !p_sys->b_sps )
{
block_ChainRelease( p_sys->p_frame );
msg_Warn( p_dec, "waiting for SPS" );
/* Reset context */
p_sys->p_frame = NULL;
p_sys->b_slice = VLC_FALSE;
}
if( !p_sys->b_sps &&
i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
{
p_sys->b_slice = VLC_TRUE;
/* Fragment will be discarded later on */
}
else if( i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
{
uint8_t *dec;
int i_dec, i_first_mb, i_slice_type, i_frame_num, i_pic_flags = 0;
vlc_bool_t b_pic = VLC_FALSE;
bs_t s;
/* do not convert the whole frame */
nal_get_decoded( &dec, &i_dec, &p_frag->p_buffer[4],
__MIN( p_frag->i_buffer - 4, 60 ) );
bs_init( &s, dec, i_dec );
/* first_mb_in_slice */
i_first_mb = bs_read_ue( &s );
/* slice_type */
switch( (i_slice_type = bs_read_ue( &s )) )
{
case 0:
case 5:
i_pic_flags = BLOCK_FLAG_TYPE_P;
break;
case 1:
case 6:
i_pic_flags = BLOCK_FLAG_TYPE_B;
break;
case 2:
case 7:
i_pic_flags = BLOCK_FLAG_TYPE_I;
break;
case 3:
case 8: /* SP */
i_pic_flags = BLOCK_FLAG_TYPE_P;
break;
case 4:
case 9:
i_pic_flags = BLOCK_FLAG_TYPE_I;
break;
}
/* pic_parameter_set_id */
bs_read_ue( &s );
/* frame_num */
i_frame_num = bs_read( &s, p_sys->i_log2_max_frame_num + 4 );
/* Detection of the first VCL NAL unit of a primary coded picture
* (cf. 7.4.1.2.4) */
if( i_frame_num != p_sys->i_frame_num ||
( (i_nal_ref_idc != p_sys->i_nal_ref_idc) &&
(!i_nal_ref_idc || !p_sys->i_nal_ref_idc) ) )
{
b_pic = VLC_TRUE;
}
p_sys->i_frame_num = i_frame_num;
p_sys->i_nal_ref_idc = i_nal_ref_idc;
if( !p_sys->b_frame_mbs_only )
{
/* field_pic_flag */
if( bs_read( &s, 1 ) )
{
/* bottom_field_flag */
bs_read( &s, 1 );
}
}
if( i_nal_type == NAL_SLICE_IDR )
{
/* id_pic_id */
int i_idr_pic_id = bs_read_ue( &s );
if( p_sys->i_nal_type != i_nal_type ) b_pic = VLC_TRUE;
if( p_sys->i_idr_pic_id != i_idr_pic_id ) b_pic = VLC_TRUE;
p_sys->i_idr_pic_id = i_idr_pic_id;
}
p_sys->i_nal_type = i_nal_type;
if( b_pic && p_sys->b_slice )
{
p_pic = block_ChainGather( p_sys->p_frame );
p_pic->i_dts = p_sys->i_dts;
p_pic->i_pts = p_sys->i_pts;
p_pic->i_length = 0; /* FIXME */
p_pic->i_flags = p_sys->i_flags;
/* Reset context */
p_sys->p_frame = NULL;
p_sys->b_slice = VLC_FALSE;
}
p_sys->b_slice = VLC_TRUE;
p_sys->i_flags = i_pic_flags;
p_sys->i_dts = p_frag->i_dts;
p_sys->i_pts = p_frag->i_pts;
free( dec );
}
else if( i_nal_type == NAL_SPS )
{
uint8_t *dec;
int i_dec;
bs_t s;
int i_tmp;
msg_Dbg( p_dec, "found NAL_SPS" );
p_sys->b_sps = VLC_TRUE;
nal_get_decoded( &dec, &i_dec, &p_frag->p_buffer[4],
p_frag->i_buffer - 4 );
bs_init( &s, dec, i_dec );
/* Skip profile(8), constraint_set012, reserver(5), level(8) */
bs_skip( &s, 8 + 1+1+1 + 5 + 8 );
/* sps id */
bs_read_ue( &s );
/* Skip i_log2_max_frame_num */
p_sys->i_log2_max_frame_num = bs_read_ue( &s );
/* Read poc_type */
i_tmp = bs_read_ue( &s );
if( i_tmp == 0 )
{
/* skip i_log2_max_poc_lsb */
bs_read_ue( &s );
}
else if( i_tmp == 1 )
{
int i_cycle;
/* skip b_delta_pic_order_always_zero */
bs_skip( &s, 1 );
/* skip i_offset_for_non_ref_pic */
bs_read_se( &s );
/* skip i_offset_for_top_to_bottom_field */
bs_read_se( &s );
/* read i_num_ref_frames_in_poc_cycle */
i_cycle = bs_read_ue( &s );
if( i_cycle > 256 ) i_cycle = 256;
while( i_cycle > 0 )
{
/* skip i_offset_for_ref_frame */
bs_read_se(&s );
}
}
/* i_num_ref_frames */
bs_read_ue( &s );
/* b_gaps_in_frame_num_value_allowed */
bs_skip( &s, 1 );
/* Read size */
p_dec->fmt_out.video.i_width = 16 * ( bs_read_ue( &s ) + 1 );
p_dec->fmt_out.video.i_height = 16 * ( bs_read_ue( &s ) + 1 );
/* b_frame_mbs_only */
p_sys->b_frame_mbs_only = bs_read( &s, 1 );
if( p_sys->b_frame_mbs_only == 0 )
{
bs_skip( &s, 1 );
}
/* b_direct8x8_inference */
bs_skip( &s, 1 );
/* crop */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
/* left */
bs_read_ue( &s );
/* right */
bs_read_ue( &s );
/* top */
bs_read_ue( &s );
/* bottom */
bs_read_ue( &s );
}
/* vui */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
/* read the aspect ratio part if any FIXME check it */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
static const struct {
int w, h;
} sar[14] =
{
{ 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 },
};
int i_sar = bs_read( &s, 8 );
int w, h;
if( i_sar < 14 )
{
w = sar[i_sar].w;
h = sar[i_sar].h;
}
else
{
w = bs_read( &s, 16 );
h = bs_read( &s, 16 );
}
p_dec->fmt_out.video.i_aspect =
VOUT_ASPECT_FACTOR * w / h * p_dec->fmt_out.video.i_width /
p_dec->fmt_out.video.i_height;
}
}
free( dec );
}
else if( i_nal_type == NAL_PPS )
{
bs_t s;
bs_init( &s, &p_frag->p_buffer[4], p_frag->i_buffer - 4 );
/* TODO */
msg_Dbg( p_dec, "found NAL_PPS" );
}
/* Append the block */
block_ChainAppend( &p_sys->p_frame, p_frag );
return p_pic;
}
/* MPLS */
void bd_mpls_stream_Parse( bd_mpls_stream_t *p_stream, bs_t *s, int i_class )
{
/* Stream entry parsing */
const int i_entry_length = bs_read( s, 8 );
const int i_entry_start = bs_pos( s ) / 8;
p_stream->i_type = bs_read( s, 8 );
p_stream->i_class = i_class;
if( p_stream->i_type == BD_MPLS_STREAM_TYPE_PLAY_ITEM )
{
p_stream->play_item.i_pid = bs_read( s, 16 );
}
else if( p_stream->i_type == BD_MPLS_STREAM_TYPE_SUB_PATH )
{
p_stream->sub_path.i_sub_path_id = bs_read( s, 8 );
p_stream->sub_path.i_sub_clip_id = bs_read( s, 8 );
p_stream->sub_path.i_pid = bs_read( s, 16 );
}
else if( p_stream->i_type == BD_MPLS_STREAM_TYPE_IN_MUX_SUB_PATH )
{
p_stream->in_mux_sub_path.i_sub_path_id = bs_read( s, 8 );
p_stream->in_mux_sub_path.i_pid = bs_read( s, 16 );
}
bs_skip( s, 8 * ( i_entry_start + i_entry_length ) - bs_pos( s ) );
/* Stream attributes parsing */
const int i_attributes_length = bs_read( s, 8 );
const int i_attributes_start = bs_pos( s ) / 8;
p_stream->i_stream_type = bs_read( s, 8 );
strcpy( p_stream->psz_language, "" );
p_stream->i_charset = -1;
if( p_stream->i_stream_type == 0x02 || /* MPEG-I/II */
p_stream->i_stream_type == 0x1b || /* AVC */
p_stream->i_stream_type == 0xea ) /* VC-1 */
{
/* Video */
}
else if( ( p_stream->i_stream_type >= 0x80 && p_stream->i_stream_type <= 0x8f ) ||
( p_stream->i_stream_type >= 0xa0 && p_stream->i_stream_type <= 0xaf ) )
{
/* Audio */
bs_skip( s, 4 );
bs_skip( s, 4 );
for( int i = 0; i < 3; i++ )
p_stream->psz_language[i] = bs_read( s, 8 );
p_stream->psz_language[3] = '\0';
}
else if( p_stream->i_stream_type == 0x90 || /* PG stream */
p_stream->i_stream_type == 0x91 ) /* IG stream */
{
for( int i = 0; i < 3; i++ )
p_stream->psz_language[i] = bs_read( s, 8 );
p_stream->psz_language[3] = '\0';
}
else if( p_stream->i_stream_type == 0x92 ) /* Text stream */
{
p_stream->i_charset = bs_read( s, 8 );
for( int i = 0; i < 3; i++ )
p_stream->psz_language[i] = bs_read( s, 8 );
p_stream->psz_language[3] = '\0';
}
bs_skip( s, 8 * ( i_attributes_start + i_attributes_length ) - bs_pos( s ) );
}
static int dirac_bool( bs_t *p_bs )
{
return bs_read( p_bs, 1 );
}
void bd_mpls_play_item_Parse( bd_mpls_play_item_t *p_item, bs_t *s )
{
const int i_length = bs_read( s, 16 );
const int i_start = bs_pos( s ) / 8;
char psz_name[5+1];
for( int j = 0; j < 5; j++ )
psz_name[j] = bs_read( s, 8 );
psz_name[5] = '\0';
p_item->clpi.i_id = strtol( psz_name, NULL, 10 );
bs_skip( s, 32 );
bs_skip( s, 11 );
const bool b_angle = bs_read( s, 1 );
p_item->i_connection = bs_read( s, 4 );
p_item->clpi.i_stc_id = bs_read( s, 8 );
p_item->i_in_time = bs_read( s, 32 );
p_item->i_out_time = bs_read( s, 32 );
bs_skip( s, 64 );
bs_skip( s, 1 );
bs_skip( s, 7 );
p_item->i_still = bs_read( s, 8 );
p_item->i_still_time = bs_read( s, 16 );
if( p_item->i_still == BD_MPLS_PLAY_ITEM_STILL_NONE )
p_item->i_still_time = 0;
else if( p_item->i_still == BD_MPLS_PLAY_ITEM_STILL_INFINITE )
p_item->i_still_time = INT_MAX;
if( b_angle )
{
const int i_angle = bs_read( s, 8 );
bs_skip( s, 6 );
p_item->b_angle_different_audio = bs_read( s, 1 );
p_item->b_angle_seamless = bs_read( s, 1 );
p_item->p_clpi = calloc( i_angle, sizeof(*p_item->p_clpi) );
for( p_item->i_clpi = 0; p_item->i_clpi < i_angle; p_item->i_clpi++ )
{
if( !p_item->p_clpi )
break;
bd_mpls_clpi_t *p_clpi = &p_item->p_clpi[p_item->i_clpi];
char psz_name[5+1];
for( int j = 0; j < 5; j++ )
psz_name[j] = bs_read( s, 8 );
psz_name[5] = '\0';
p_clpi->i_id = strtol( psz_name, NULL, 10 );
bs_skip( s, 32 );
p_clpi->i_stc_id = bs_read( s, 8 );
}
}
else
{
p_item->i_clpi = 0;
p_item->p_clpi = NULL;
p_item->b_angle_different_audio = false;
p_item->b_angle_seamless = true;
}
/* STN Table */
bs_skip( s, 16 ); /* Length */
bs_skip( s, 16 );
const int i_video = bs_read( s, 8 );
const int i_audio = bs_read( s, 8 );
const int i_pg = bs_read( s, 8 );
const int i_ig = bs_read( s, 8 );
const int i_audio_2 = bs_read( s, 8 );
const int i_video_2 = bs_read( s, 8 );
const int i_pip_pg = bs_read( s, 8 );
bs_skip( s, 40 );
p_item->i_stream = 0;
p_item->p_stream = calloc( i_video + i_audio + i_pg + i_ig,
sizeof(*p_item->p_stream) );
for( int j = 0; j < i_video; j++, p_item->i_stream++ )
{
if( !p_item->p_stream )
break;
bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
BD_MPLS_STREAM_CLASS_PRIMARY_VIDEO );
}
for( int j = 0; j < i_audio; j++, p_item->i_stream++ )
{
if( !p_item->p_stream )
break;
bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
BD_MPLS_STREAM_CLASS_PRIMARY_AUDIO );
}
for( int j = 0; j < i_pg; j++, p_item->i_stream++ )
{
if( !p_item->p_stream )
break;
bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
BD_MPLS_STREAM_CLASS_PG );
}
for( int j = 0; j < i_ig; j++, p_item->i_stream++ )
{
if( !p_item->p_stream )
break;
bd_mpls_stream_Parse( &p_item->p_stream[p_item->i_stream], s,
BD_MPLS_STREAM_CLASS_IG );
}
for( int j = 0; j < i_audio_2; j++ )
{
/* TODO I need samples */
}
for( int j = 0; j < i_video_2; j++ )
{
/* TODO I need samples */
}
for( int j = 0; j < i_pip_pg; j++ )
{
/* TODO I need samples */
}
bs_skip( s, 8 * ( i_start + i_length ) - bs_pos( s ) );
}
int bd_mpls_Parse( bd_mpls_t *p_mpls, bs_t *s, int i_id )
{
const int i_start = bs_pos( s ) / 8;
/* */
if( bs_read( s, 32 ) != 0x4d504c53 )
return VLC_EGENERIC;
const uint32_t i_version = bs_read( s, 32 );
if( i_version != 0x30313030 && i_version != 0x30323030 )
return VLC_EGENERIC;
const uint32_t i_play_item_start = bs_read( s, 32 );
const uint32_t i_mark_start = bs_read( s, 32 );
bs_skip( s, 32 ); /* Extension start */
/* */
p_mpls->i_id = i_id;
/* Read AppInfo: ignored */
/* Read Playlist */
bs_t ps = *s;
bs_skip( &ps, 8 * ( i_start + i_play_item_start ) - bs_pos( s ) );
bs_skip( &ps, 32 ); /* Length */
bs_skip( &ps, 16 );
const int i_play_item = bs_read( &ps, 16 );
const int i_sub_path = bs_read( &ps, 16 );
p_mpls->p_play_item = calloc( i_play_item, sizeof(*p_mpls->p_play_item) );
for( p_mpls->i_play_item = 0; p_mpls->i_play_item < i_play_item; p_mpls->i_play_item++ )
{
if( !p_mpls->p_play_item )
break;
bd_mpls_play_item_t *p_item = &p_mpls->p_play_item[p_mpls->i_play_item];
bd_mpls_play_item_Parse( p_item, &ps );
}
p_mpls->p_sub_path = calloc( i_sub_path, sizeof(*p_mpls->p_sub_path) );
for( p_mpls->i_sub_path = 0; p_mpls->i_sub_path < i_sub_path; p_mpls->i_sub_path++ )
{
if( !p_mpls->p_sub_path )
break;
bd_mpls_sub_path_t *p_sub = &p_mpls->p_sub_path[p_mpls->i_sub_path];
bd_mpls_sub_path_Parse( p_sub, &ps );
}
/* Read Mark */
bs_t ms = *s;
bs_skip( &ms, 8 * ( i_start + i_mark_start ) - bs_pos( s ) );
bs_skip( &ms, 32 );
const int i_mark = bs_read( &ms, 16 );
p_mpls->p_mark = calloc( i_mark, sizeof(*p_mpls->p_mark) );
for( p_mpls->i_mark = 0; p_mpls->i_mark < i_mark; p_mpls->i_mark++ )
{
if( !p_mpls->p_mark )
break;
bd_mpls_mark_t *p_mark = &p_mpls->p_mark[p_mpls->i_mark];
bd_mpls_mark_Parse( p_mark, &ms );
}
/* Read Extension: ignored */
return VLC_SUCCESS;
}
static void ParseSei( decoder_t *p_dec, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *pb_dec;
int i_dec;
/* */
CreateDecodedNAL( &pb_dec, &i_dec, &p_frag->p_buffer[5], p_frag->i_buffer - 5 );
if( !pb_dec )
return;
/* The +1 is for rbsp trailing bits */
for( int i_used = 0; i_used+1 < i_dec; )
{
/* Read type */
int i_type = 0;
while( i_used+1 < i_dec )
{
const int i_byte = pb_dec[i_used++];
i_type += i_byte;
if( i_byte != 0xff )
break;
}
/* Read size */
int i_size = 0;
while( i_used+1 < i_dec )
{
const int i_byte = pb_dec[i_used++];
i_size += i_byte;
if( i_byte != 0xff )
break;
}
/* Check room */
if( i_used + i_size + 1 > i_dec )
break;
/* Look for pic timing */
if( i_type == SEI_PIC_TIMING )
{
bs_t s;
const int i_tim = i_size;
const uint8_t *p_tim = &pb_dec[i_used];
bs_init( &s, p_tim, i_tim );
if( p_sys->b_cpb_dpb_delays_present_flag )
{
bs_read( &s, p_sys->i_cpb_removal_delay_length_minus1 + 1 );
bs_read( &s, p_sys->i_dpb_output_delay_length_minus1 + 1 );
}
if( p_sys->b_pic_struct_present_flag )
p_sys->i_pic_struct = bs_read( &s, 4 );
/* + unparsed remains */
}
/* Look for user_data_registered_itu_t_t35 */
if( i_type == SEI_USER_DATA_REGISTERED )
{
static const uint8_t p_dvb1_data_start_code[] = {
0xb5,
0x00, 0x31,
0x47, 0x41, 0x39, 0x34
};
const int i_t35 = i_size;
const uint8_t *p_t35 = &pb_dec[i_used];
/* Check for we have DVB1_data() */
if( i_t35 >= 5 &&
!memcmp( p_t35, p_dvb1_data_start_code, sizeof(p_dvb1_data_start_code) ) )
{
cc_Extract( &p_sys->cc_next, true, &p_t35[3], i_t35 - 3 );
}
}
/* Look for SEI recovery point */
if( i_type == SEI_RECOVERY_POINT )
{
bs_t s;
const int i_rec = i_size;
const uint8_t *p_rec = &pb_dec[i_used];
bs_init( &s, p_rec, i_rec );
int i_recovery_frames = bs_read_ue( &s );
//bool b_exact_match = bs_read( &s, 1 );
//bool b_broken_link = bs_read( &s, 1 );
//int i_changing_slice_group = bs_read( &s, 2 );
if( !p_sys->b_header )
{
msg_Dbg( p_dec, "Seen SEI recovery point, %d recovery frames", i_recovery_frames );
if ( p_sys->i_recovery_frames == -1 || i_recovery_frames < p_sys->i_recovery_frames )
p_sys->i_recovery_frames = i_recovery_frames;
}
}
i_used += i_size;
}
free( pb_dec );
}
static void PutSPS( decoder_t *p_dec, block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *pb_dec = NULL;
int i_dec = 0;
bs_t s;
int i_tmp;
int i_sps_id;
CreateDecodedNAL( &pb_dec, &i_dec, &p_frag->p_buffer[5],
p_frag->i_buffer - 5 );
bs_init( &s, pb_dec, i_dec );
int i_profile_idc = bs_read( &s, 8 );
p_dec->fmt_out.i_profile = i_profile_idc;
/* Skip constraint_set0123, reserved(4) */
bs_skip( &s, 1+1+1+1 + 4 );
p_dec->fmt_out.i_level = bs_read( &s, 8 );
/* sps id */
i_sps_id = bs_read_ue( &s );
if( i_sps_id >= SPS_MAX || i_sps_id < 0 )
{
msg_Warn( p_dec, "invalid SPS (sps_id=%d)", i_sps_id );
free( pb_dec );
block_Release( p_frag );
return;
}
if( i_profile_idc == PROFILE_H264_HIGH || i_profile_idc == PROFILE_H264_HIGH_10 ||
i_profile_idc == PROFILE_H264_HIGH_422 || i_profile_idc == PROFILE_H264_HIGH_444_PREDICTIVE ||
i_profile_idc == PROFILE_H264_CAVLC_INTRA || i_profile_idc == PROFILE_H264_SVC_BASELINE ||
i_profile_idc == PROFILE_H264_SVC_HIGH )
{
/* chroma_format_idc */
const int i_chroma_format_idc = bs_read_ue( &s );
if( i_chroma_format_idc == 3 )
bs_skip( &s, 1 ); /* separate_colour_plane_flag */
/* bit_depth_luma_minus8 */
bs_read_ue( &s );
/* bit_depth_chroma_minus8 */
bs_read_ue( &s );
/* qpprime_y_zero_transform_bypass_flag */
bs_skip( &s, 1 );
/* seq_scaling_matrix_present_flag */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
for( int i = 0; i < ((3 != i_chroma_format_idc) ? 8 : 12); i++ )
{
/* seq_scaling_list_present_flag[i] */
i_tmp = bs_read( &s, 1 );
if( !i_tmp )
continue;
const int i_size_of_scaling_list = (i < 6 ) ? 16 : 64;
/* scaling_list (...) */
int i_lastscale = 8;
int i_nextscale = 8;
for( int j = 0; j < i_size_of_scaling_list; j++ )
{
if( i_nextscale != 0 )
{
/* delta_scale */
i_tmp = bs_read_se( &s );
i_nextscale = ( i_lastscale + i_tmp + 256 ) % 256;
/* useDefaultScalingMatrixFlag = ... */
}
/* scalinglist[j] */
i_lastscale = ( i_nextscale == 0 ) ? i_lastscale : i_nextscale;
}
}
}
}
/* Skip i_log2_max_frame_num */
p_sys->i_log2_max_frame_num = bs_read_ue( &s );
if( p_sys->i_log2_max_frame_num > 12)
p_sys->i_log2_max_frame_num = 12;
/* Read poc_type */
p_sys->i_pic_order_cnt_type = bs_read_ue( &s );
if( p_sys->i_pic_order_cnt_type == 0 )
{
/* skip i_log2_max_poc_lsb */
p_sys->i_log2_max_pic_order_cnt_lsb = bs_read_ue( &s );
if( p_sys->i_log2_max_pic_order_cnt_lsb > 12 )
p_sys->i_log2_max_pic_order_cnt_lsb = 12;
}
else if( p_sys->i_pic_order_cnt_type == 1 )
{
int i_cycle;
/* skip b_delta_pic_order_always_zero */
p_sys->i_delta_pic_order_always_zero_flag = bs_read( &s, 1 );
/* skip i_offset_for_non_ref_pic */
bs_read_se( &s );
/* skip i_offset_for_top_to_bottom_field */
bs_read_se( &s );
/* read i_num_ref_frames_in_poc_cycle */
i_cycle = bs_read_ue( &s );
if( i_cycle > 256 ) i_cycle = 256;
while( i_cycle > 0 )
{
/* skip i_offset_for_ref_frame */
bs_read_se(&s );
i_cycle--;
}
}
/* i_num_ref_frames */
bs_read_ue( &s );
/* b_gaps_in_frame_num_value_allowed */
bs_skip( &s, 1 );
/* Read size */
p_dec->fmt_out.video.i_width = 16 * ( bs_read_ue( &s ) + 1 );
p_dec->fmt_out.video.i_height = 16 * ( bs_read_ue( &s ) + 1 );
/* b_frame_mbs_only */
p_sys->b_frame_mbs_only = bs_read( &s, 1 );
p_dec->fmt_out.video.i_height *= ( 2 - p_sys->b_frame_mbs_only );
if( p_sys->b_frame_mbs_only == 0 )
{
bs_skip( &s, 1 );
}
/* b_direct8x8_inference */
bs_skip( &s, 1 );
/* crop */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
/* left */
bs_read_ue( &s );
/* right */
bs_read_ue( &s );
/* top */
bs_read_ue( &s );
/* bottom */
bs_read_ue( &s );
}
/* vui */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
/* read the aspect ratio part if any */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
static const struct { int w, h; } sar[17] =
{
{ 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 }, { 4, 3 }, { 3, 2 },
{ 2, 1 },
};
int i_sar = bs_read( &s, 8 );
int w, h;
if( i_sar < 17 )
{
w = sar[i_sar].w;
h = sar[i_sar].h;
}
else if( i_sar == 255 )
{
w = bs_read( &s, 16 );
h = bs_read( &s, 16 );
}
else
{
w = 0;
h = 0;
}
if( w != 0 && h != 0 )
{
p_dec->fmt_out.video.i_sar_num = w;
p_dec->fmt_out.video.i_sar_den = h;
}
else
{
p_dec->fmt_out.video.i_sar_num = 1;
p_dec->fmt_out.video.i_sar_den = 1;
}
}
/* overscan */
i_tmp = bs_read( &s, 1 );
if ( i_tmp )
bs_read( &s, 1 );
/* video signal type */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
bs_read( &s, 4 );
/* colour desc */
bs_read( &s, 1 );
if ( i_tmp )
bs_read( &s, 24 );
}
/* chroma loc info */
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
bs_read_ue( &s );
bs_read_ue( &s );
}
/* timing info */
p_sys->b_timing_info_present_flag = bs_read( &s, 1 );
if( p_sys->b_timing_info_present_flag )
{
p_sys->i_num_units_in_tick = bs_read( &s, 32 );
p_sys->i_time_scale = bs_read( &s, 32 );
p_sys->b_fixed_frame_rate = bs_read( &s, 1 );
}
/* Nal hrd & VC1 hrd parameters */
p_sys->b_cpb_dpb_delays_present_flag = false;
for ( int i=0; i<2; i++ )
{
i_tmp = bs_read( &s, 1 );
if( i_tmp )
{
p_sys->b_cpb_dpb_delays_present_flag = true;
uint32_t count = bs_read_ue( &s ) + 1;
bs_read( &s, 4 );
bs_read( &s, 4 );
for( uint32_t i=0; i<count; i++ )
{
bs_read_ue( &s );
bs_read_ue( &s );
bs_read( &s, 1 );
}
bs_read( &s, 5 );
p_sys->i_cpb_removal_delay_length_minus1 = bs_read( &s, 5 );
p_sys->i_dpb_output_delay_length_minus1 = bs_read( &s, 5 );
bs_read( &s, 5 );
}
}
if( p_sys->b_cpb_dpb_delays_present_flag )
bs_read( &s, 1 );
/* pic struct info */
p_sys->b_pic_struct_present_flag = bs_read( &s, 1 );
/* + unparsed remains */
}
free( pb_dec );
/* We have a new SPS */
if( !p_sys->b_sps )
msg_Dbg( p_dec, "found NAL_SPS (sps_id=%d)", i_sps_id );
p_sys->b_sps = true;
if( p_sys->pp_sps[i_sps_id] )
block_Release( p_sys->pp_sps[i_sps_id] );
p_sys->pp_sps[i_sps_id] = p_frag;
}
int bd_clpi_ep_map_Parse( bd_clpi_ep_map_t *p_ep_map,
bs_t *s, const int i_ep_map_start )
{
p_ep_map->i_pid = bs_read( s, 16 );
bs_skip( s, 10 );
p_ep_map->i_type = bs_read( s, 4 );
const int i_coarse = bs_read( s, 16 );
const int i_fine = bs_read( s, 18 );
const uint32_t i_coarse_start = bs_read( s, 32 );
p_ep_map->i_ep = i_fine;
p_ep_map->p_ep = (bd_clpi_ep_t *)calloc( i_fine, sizeof(*p_ep_map->p_ep) ); // sunqueen modify
if( !p_ep_map->p_ep )
return VLC_EGENERIC;
bs_t cs = *s;
bs_skip( &cs, 8*(i_ep_map_start + i_coarse_start) - bs_pos( s ) );
const uint32_t i_fine_start = bs_read( &cs, 32 );
for( int i = 0; i < i_coarse; i++ )
{
const int i_fine_id = bs_read( &cs, 18 );
const int i_pts = bs_read( &cs, 14 );
const uint32_t i_packet = bs_read( &cs, 32 );
for( int j = i_fine_id; j < p_ep_map->i_ep; j++ )
{
p_ep_map->p_ep[j].i_pts = (int64_t)(i_pts & ~1) << 19;
p_ep_map->p_ep[j].i_packet = i_packet & ~( (1 << 17) - 1 );
}
}
bs_t fs = *s;
bs_skip( &fs, 8*(i_ep_map_start + i_coarse_start + i_fine_start) - bs_pos( s ) );
for( int i = 0; i < i_fine; i++ )
{
const bool b_angle_point = bs_read( &fs, 1 );
bs_skip( &fs, 3 ); /* I end position offset */
const int i_pts = bs_read( &fs, 11 );
const int i_packet = bs_read( &fs, 17 );
p_ep_map->p_ep[i].b_angle_point = b_angle_point;
p_ep_map->p_ep[i].i_pts |= i_pts << 9;
p_ep_map->p_ep[i].i_packet |= i_packet;
}
return VLC_SUCCESS;
}
static void ParseSlice( decoder_t *p_dec, bool *pb_new_picture, slice_t *p_slice,
int i_nal_ref_idc, int i_nal_type, const block_t *p_frag )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *pb_dec;
int i_dec;
int i_slice_type;
slice_t slice;
bs_t s;
/* do not convert the whole frame */
CreateDecodedNAL( &pb_dec, &i_dec, &p_frag->p_buffer[5],
__MIN( p_frag->i_buffer - 5, 60 ) );
bs_init( &s, pb_dec, i_dec );
/* first_mb_in_slice */
/* int i_first_mb = */ bs_read_ue( &s );
/* slice_type */
switch( (i_slice_type = bs_read_ue( &s )) )
{
case 0: case 5:
slice.i_frame_type = BLOCK_FLAG_TYPE_P;
break;
case 1: case 6:
slice.i_frame_type = BLOCK_FLAG_TYPE_B;
break;
case 2: case 7:
slice.i_frame_type = BLOCK_FLAG_TYPE_I;
break;
case 3: case 8: /* SP */
slice.i_frame_type = BLOCK_FLAG_TYPE_P;
break;
case 4: case 9:
slice.i_frame_type = BLOCK_FLAG_TYPE_I;
break;
default:
slice.i_frame_type = 0;
break;
}
/* */
slice.i_nal_type = i_nal_type;
slice.i_nal_ref_idc = i_nal_ref_idc;
slice.i_pic_parameter_set_id = bs_read_ue( &s );
slice.i_frame_num = bs_read( &s, p_sys->i_log2_max_frame_num + 4 );
slice.i_field_pic_flag = 0;
slice.i_bottom_field_flag = -1;
if( !p_sys->b_frame_mbs_only )
{
/* field_pic_flag */
slice.i_field_pic_flag = bs_read( &s, 1 );
if( slice.i_field_pic_flag )
slice.i_bottom_field_flag = bs_read( &s, 1 );
}
slice.i_idr_pic_id = p_sys->slice.i_idr_pic_id;
if( slice.i_nal_type == NAL_SLICE_IDR )
slice.i_idr_pic_id = bs_read_ue( &s );
slice.i_pic_order_cnt_lsb = -1;
slice.i_delta_pic_order_cnt_bottom = -1;
slice.i_delta_pic_order_cnt0 = 0;
slice.i_delta_pic_order_cnt1 = 0;
if( p_sys->i_pic_order_cnt_type == 0 )
{
slice.i_pic_order_cnt_lsb = bs_read( &s, p_sys->i_log2_max_pic_order_cnt_lsb + 4 );
if( p_sys->i_pic_order_present_flag && !slice.i_field_pic_flag )
slice.i_delta_pic_order_cnt_bottom = bs_read_se( &s );
}
else if( (p_sys->i_pic_order_cnt_type == 1) &&
(!p_sys->i_delta_pic_order_always_zero_flag) )
{
slice.i_delta_pic_order_cnt0 = bs_read_se( &s );
if( p_sys->i_pic_order_present_flag && !slice.i_field_pic_flag )
slice.i_delta_pic_order_cnt1 = bs_read_se( &s );
}
free( pb_dec );
/* Detection of the first VCL NAL unit of a primary coded picture
* (cf. 7.4.1.2.4) */
bool b_pic = false;
if( slice.i_frame_num != p_sys->slice.i_frame_num ||
slice.i_pic_parameter_set_id != p_sys->slice.i_pic_parameter_set_id ||
slice.i_field_pic_flag != p_sys->slice.i_field_pic_flag ||
slice.i_nal_ref_idc != p_sys->slice.i_nal_ref_idc )
b_pic = true;
if( (slice.i_bottom_field_flag != -1) &&
(p_sys->slice.i_bottom_field_flag != -1) &&
(slice.i_bottom_field_flag != p_sys->slice.i_bottom_field_flag) )
b_pic = true;
if( p_sys->i_pic_order_cnt_type == 0 &&
( slice.i_pic_order_cnt_lsb != p_sys->slice.i_pic_order_cnt_lsb ||
slice.i_delta_pic_order_cnt_bottom != p_sys->slice.i_delta_pic_order_cnt_bottom ) )
b_pic = true;
else if( p_sys->i_pic_order_cnt_type == 1 &&
( slice.i_delta_pic_order_cnt0 != p_sys->slice.i_delta_pic_order_cnt0 ||
slice.i_delta_pic_order_cnt1 != p_sys->slice.i_delta_pic_order_cnt1 ) )
b_pic = true;
if( ( slice.i_nal_type == NAL_SLICE_IDR || p_sys->slice.i_nal_type == NAL_SLICE_IDR ) &&
( slice.i_nal_type != p_sys->slice.i_nal_type || slice.i_idr_pic_id != p_sys->slice.i_idr_pic_id ) )
b_pic = true;
/* */
*pb_new_picture = b_pic;
*p_slice = slice;
}
int bd_clpi_Parse( bd_clpi_t *p_clpi, bs_t *s, int i_id )
{
const int i_start = bs_pos( s ) / 8;
/* */
if( bs_read( s, 32 ) != 0x48444D56 )
return VLC_EGENERIC;
const uint32_t i_version = bs_read( s, 32 );
if( i_version != 0x30313030 && i_version != 0x30323030 )
return VLC_EGENERIC;
/* */
const uint32_t i_sequence_start = bs_read( s, 32 );
const uint32_t i_program_start = bs_read( s, 32 );
const uint32_t i_cpi_start = bs_read( s, 32 );
bs_skip( s, 32 ); /* mark start */
bs_skip( s, 32 ); /* extension start */
/* */
p_clpi->i_id = i_id;
/* Read sequence */
bs_t ss = *s;
bs_skip( &ss, 8 * ( i_start + i_sequence_start ) - bs_pos( s ) );
bs_skip( &ss, 32 ); /* Length */
bs_skip( &ss, 8 );
bs_skip( &ss, 8 ); /* ATC sequence count (MUST be 1 ?) */
bs_skip( &ss, 32 ); /* ATC start (MUST be 0) */
const int i_stc = bs_read( &ss, 8 );
bs_skip( &ss, 8 ); /* STC ID offset (MUST be 0 ? */
p_clpi->p_stc = (bd_clpi_stc_t *)calloc( i_stc, sizeof(*p_clpi->p_stc) ); // sunqueen modify
for( p_clpi->i_stc = 0; p_clpi->i_stc < i_stc; p_clpi->i_stc++ )
{
if( !p_clpi->p_stc )
break;
bd_clpi_stc_Parse( &p_clpi->p_stc[p_clpi->i_stc], &ss );
}
/* Program */
bs_t ps = *s;
bs_skip( &ps, 8 * ( i_start + i_program_start ) - bs_pos( s ) );
bs_skip( &ps, 32 ); /* Length */
bs_skip( &ps, 8 );
bs_skip( &ps, 8 ); /* Program count (MUST be 1 ?) */
bs_skip( &ps, 32 ); /* Program sequence start (MUST be 0) */
p_clpi->i_pmt_pid = bs_read( &ps, 16 );
const int i_stream = bs_read( &ps, 8 );
bs_skip( &ps, 8 ); /* Group count (MUST be 1 ?) */
p_clpi->p_stream = (bd_clpi_stream_t *)calloc( i_stream, sizeof(*p_clpi->p_stream) ); // sunqueen modify
for( p_clpi->i_stream = 0; p_clpi->i_stream < i_stream; p_clpi->i_stream++ )
{
if( !p_clpi->p_stream )
break;
bd_clpi_stream_Parse( &p_clpi->p_stream[p_clpi->i_stream], &ps );
}
/* Read CPI */
bs_t cs = *s;
bs_skip( &cs, 8 * ( i_start + i_cpi_start ) - bs_pos( s ) );
const uint32_t i_cpi_length = bs_read( &cs, 32 );
if( i_cpi_length > 0 )
{
bs_skip( &cs, 12 );
bs_skip( &cs, 4 ); /* Type (MUST be 1) */
/* EPMap */
const int i_epmap_start = bs_pos( &cs ) / 8;
bs_skip( &cs, 8 );
const int i_ep_map = bs_read( &cs, 8 );
p_clpi->p_ep_map = (bd_clpi_ep_map_t *)calloc( i_ep_map, sizeof(*p_clpi->p_ep_map) ); // sunqueen modify
for( p_clpi->i_ep_map = 0; p_clpi->i_ep_map < i_ep_map; p_clpi->i_ep_map++ )
{
if( !p_clpi->p_ep_map )
break;
if( bd_clpi_ep_map_Parse( &p_clpi->p_ep_map[p_clpi->i_ep_map],
&cs, i_epmap_start ) )
break;
}
}
else
{
p_clpi->i_ep_map = 0;
p_clpi->p_ep_map = NULL;
}
return VLC_SUCCESS;
}
/* 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 = p_frag->p_buffer[3];
*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_aspect = VOUT_ASPECT_FACTOR * i_display_width / i_display_height;
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;
}
bool
h264MediaStream::ParseSqs(const buf_share_ptr SqsNode)
{
assert(SqsNode);
if (StreamSps == NULL)
StreamSps = new h264_sps_t;
uint8_t *pb_dec = NULL;
int i_dec = 0;
bs_t s;
int i_sps_id;
i_dec = SqsNode->GetSizeValue();
int nal_hrd_parameters_present_flag, vcl_hrd_parameters_present_flag;
pb_dec = const_cast<uint8_t *>(SqsNode->GetBuffer());
//转化00 00 03为00 00
uint8_t *p_nal = new uint8_t[i_dec];
int pcount = 0;
for (int tmp = 1; tmp < i_dec ; tmp++)
{
if (tmp < i_dec - 3 && *(pb_dec + tmp) == 0x00 &&
*(pb_dec + tmp + 1) == 0x00 && *(pb_dec + tmp + 2) == 0x03)
{
p_nal[pcount++] = 0x00;
p_nal[pcount++] = 0x00;
//printf("count = %d %2X\n",tmp, *(p_nal + tmp));
tmp += 2;
continue;
}
p_nal[pcount++] = *(pb_dec + tmp);
}
pb_dec = p_nal;
//以下内容根据H264协议解读，属于直接复制粘贴代码 同parseslice
bs_init( &s, pb_dec, i_dec );
// profile(8)
StreamSps->profile_idc = bs_read( &s, 8);
/* constraint_set012, reserver(5), level(8) */
bs_skip( &s, 1+1+1 + 5 + 8 );
/* sps id */
i_sps_id = bs_read_ue( &s );
if( i_sps_id >= 32/*SPS_MAX*/ )
{
printf("invalid SPS (sps_id=%d)", i_sps_id );
delete pb_dec;
return false;
}
StreamSps->scaling_matrix_present = 0;
if(StreamSps->profile_idc >= 100) //high profile
{
if(bs_read_ue(&s) == 3) //chroma_format_idc
bs_read(&s, 1); //residual_color_transform_flag
bs_read_ue(&s); //bit_depth_luma_minus8
bs_read_ue(&s); //bit_depth_chroma_minus8
StreamSps->transform_bypass = bs_read(&s, 1);
bs_skip(&s, 1); //decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
}
/* Skip i_log2_max_frame_num */
StreamSps->log2_max_frame_num = bs_read_ue( &s );
if( StreamSps->log2_max_frame_num > 12)
StreamSps->log2_max_frame_num = 12;
/* Read poc_type */
StreamSps->poc_type/*->i_pic_order_cnt_type*/ = bs_read_ue( &s );
if( StreamSps->poc_type == 0 )
{
/* skip i_log2_max_poc_lsb */
StreamSps->log2_max_poc_lsb/*->i_log2_max_pic_order_cnt_lsb*/ = bs_read_ue( &s );
if( StreamSps->log2_max_poc_lsb > 12 )
StreamSps->log2_max_poc_lsb = 12;
}
else if( StreamSps->poc_type/*p_sys->i_pic_order_cnt_type*/ == 1 )
{
int i_cycle;
/* skip b_delta_pic_order_always_zero */
StreamSps->delta_pic_order_always_zero_flag/*->i_delta_pic_order_always_zero_flag*/ = bs_read( &s, 1 );
/* skip i_offset_for_non_ref_pic */
bs_read_se( &s );
/* skip i_offset_for_top_to_bottom_field */
bs_read_se( &s );
/* read i_num_ref_frames_in_poc_cycle */
i_cycle = bs_read_ue( &s );
if( i_cycle > 256 ) i_cycle = 256;
while( i_cycle > 0 )
{
/* skip i_offset_for_ref_frame */
bs_read_se(&s );
i_cycle--;
}
}
/* i_num_ref_frames */
bs_read_ue( &s );
/* b_gaps_in_frame_num_value_allowed */
bs_skip( &s, 1 );
/* Read size */
StreamSps->mb_width/*->fmt_out.video.i_width*/ = 16 * ( bs_read_ue( &s ) + 1 );
StreamSps->mb_height/*fmt_out.video.i_height*/ = 16 * ( bs_read_ue( &s ) + 1 );
/* b_frame_mbs_only */
StreamSps->frame_mbs_only_flag/*->b_frame_mbs_only*/ = bs_read( &s, 1 );
if( StreamSps->frame_mbs_only_flag == 0 )
{
bs_skip( &s, 1 );
}
/* b_direct8x8_inference */
bs_skip( &s, 1 );
/* crop */
StreamSps->crop = bs_read( &s, 1 );
if( StreamSps->crop )
{
/* left */
bs_read_ue( &s );
/* right */
bs_read_ue( &s );
/* top */
bs_read_ue( &s );
/* bottom */
bs_read_ue( &s );
}
/* vui */
StreamSps->vui_parameters_present_flag = bs_read( &s, 1 );
if( StreamSps->vui_parameters_present_flag )
{
int aspect_ratio_info_present_flag = bs_read( &s, 1 );
if( aspect_ratio_info_present_flag )
{
static const struct { int num, den; } sar[17] =
{
{ 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 }, { 4, 3 }, { 3, 2 },
{ 2, 1 },
};
int i_sar = bs_read( &s, 8 );
if( i_sar < 17 )
{
StreamSps->sar.num = sar[i_sar].num;
StreamSps->sar.den = sar[i_sar].den;
}
else if( i_sar == 255 )
{
StreamSps->sar.num = bs_read( &s, 16 );
StreamSps->sar.den = bs_read( &s, 16 );
}
else
{
StreamSps->sar.num = 0;
StreamSps->sar.den = 0;
}
//if( den != 0 )
// p_dec->fmt_out.video.i_aspect = (int64_t)VOUT_ASPECT_FACTOR *
// ( num * p_dec->fmt_out.video.i_width ) /
// ( den * p_dec->fmt_out.video.i_height);
//else
// p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR;
}
else
{
StreamSps->sar.num = 0;
StreamSps->sar.den = 0;
}
if(bs_read(&s, 1)) /* overscan_info_present_flag */
{
bs_read(&s, 1); /* overscan_appropriate_flag */
}
if(bs_read(&s, 1)) /* video_signal_type_present_flag */
{
bs_read(&s, 3); /* video_format */
bs_read(&s, 1); /* video_full_range_flag */
if(bs_read(&s, 1)) /* colour_description_present_flag */
{
bs_read(&s, 8); /* colour_primaries */
bs_read(&s, 8); /* transfer_characteristics */
bs_read(&s, 8); /* matrix_coefficients */
}
}
if(bs_read(&s, 1)) /* chroma_location_info_present_flag */
{
bs_read_ue(&s); /* chroma_sample_location_type_top_field */
bs_read_ue(&s); /* chroma_sample_location_type_bottom_field */
}
StreamSps->timing_info_present_flag = bs_read(&s, 1);
if(StreamSps->timing_info_present_flag)
{
StreamSps->num_units_in_tick = bs_read(&s, 32);
StreamSps->time_scale = bs_read(&s, 32);
StreamSps->fixed_frame_rate_flag = bs_read(&s, 1);
}
nal_hrd_parameters_present_flag = bs_read(&s, 1);
if(nal_hrd_parameters_present_flag)
h264_decode_hrd_parameters(s, StreamSps);
vcl_hrd_parameters_present_flag = bs_read(&s, 1);
if(vcl_hrd_parameters_present_flag)
h264_decode_hrd_parameters(s, StreamSps);
if(nal_hrd_parameters_present_flag || vcl_hrd_parameters_present_flag)
bs_read(&s, 1); /* low_delay_hrd_flag */
bs_read(&s, 1); /* pic_struct_present_flag */
StreamSps->bitstream_restriction_flag = bs_read(&s, 1);
if(StreamSps->bitstream_restriction_flag)
{
unsigned int num_reorder_frames;
bs_read(&s, 1); /* motion_vectors_over_pic_boundaries_flag */
bs_read_ue(&s); /* max_bytes_per_pic_denom */
bs_read_ue(&s); /* max_bits_per_mb_denom */
bs_read_ue(&s); /* log2_max_mv_length_horizontal */
bs_read_ue(&s); /* log2_max_mv_length_vertical */
num_reorder_frames= bs_read_ue(&s);
bs_read_ue(&s); /*max_dec_frame_buffering*/
if(num_reorder_frames > 16 /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
printf("illegal num_reorder_frames %d\n", num_reorder_frames);
delete pb_dec;
return true;
}
StreamSps->num_reorder_frames= num_reorder_frames;
}
}
delete pb_dec;
return true;
}
void
h264MediaStream::ParseSlice(uint8_t* p_nal, int n_nal_size, int i_nal_type)
{
if(CurSlice == NULL)
CurSlice = new h264_slice_t;
//转化00 00 03为00 00
int icount = 0;
uint8_t p_slice[64] = {0};
int parcount = (n_nal_size>64?64:n_nal_size);
for (int t = 0; t < parcount; t++)
{
if (t < parcount-2 && p_nal[t] == 0x00 && p_nal[t + 1] == 0x00 && p_nal[t + 2] == 0x03)
{
p_slice[icount++] = 0x00;
p_slice[icount++] = 0x00;
t += 2;
continue;
}
p_slice[icount++] = p_nal[t];
}
bs_t s;
bs_init(&s, p_slice, icount);
bs_read_ue( &s ); // first_mb_in_slice
CurSlice->i_slice_type = bs_read_ue( &s ); // slice type
int i_pic_parameter_set_id = bs_read_ue( &s );
CurSlice->i_frame_num = bs_read( &s, StreamSps->log2_max_frame_num + 4 );
int i_field_pic_flag = 0;
int i_bottom_field_flag = -1;
if( !StreamSps->frame_mbs_only_flag)
{
/* field_pic_flag */
i_field_pic_flag = bs_read( &s, 1 );
if( i_field_pic_flag )
i_bottom_field_flag = bs_read( &s, 1 );
}
int i_idr_pic_id;
if( i_nal_type == 5/*NAL_SLICE_IDR*/ )
i_idr_pic_id = bs_read_ue( &s );
int i_delta_pic_order_cnt_bottom = -1;
int i_delta_pic_order_cnt0 = 0;
int i_delta_pic_order_cnt1 = 0;
CurSlice->i_pic_order_cnt_lsb = 0;
if( StreamSps->poc_type == 0 )
{
CurSlice->i_pic_order_cnt_lsb = bs_read( &s, StreamSps->log2_max_poc_lsb + 4 );
//if( g_pic_order_present_flag && !i_field_pic_flag )
// i_delta_pic_order_cnt_bottom = bs_read_se( &s );
}
else if( (StreamSps->poc_type == 1) &&
(!StreamSps->delta_pic_order_always_zero_flag) )
{
i_delta_pic_order_cnt0 = bs_read_se( &s );
//if( g_pic_order_present_flag && !i_field_pic_flag )
// i_delta_pic_order_cnt1 = bs_read_se( &s );
}
}
static bool h264_parse_sequence_parameter_set_rbsp( bs_t *p_bs,
h264_sequence_parameter_set_t *p_sps )
{
int i_tmp;
int i_profile_idc = bs_read( p_bs, 8 );
p_sps->i_profile = i_profile_idc;
p_sps->i_profile_compatibility = bs_read( p_bs, 8 );
p_sps->i_level = bs_read( p_bs, 8 );
/* sps id */
p_sps->i_id = bs_read_ue( p_bs );
if( p_sps->i_id >= H264_SPS_MAX )
return false;
if( i_profile_idc == PROFILE_H264_HIGH ||
i_profile_idc == PROFILE_H264_HIGH_10 ||
i_profile_idc == PROFILE_H264_HIGH_422 ||
i_profile_idc == PROFILE_H264_HIGH_444 || /* Old one, no longer on spec */
i_profile_idc == PROFILE_H264_HIGH_444_PREDICTIVE ||
i_profile_idc == PROFILE_H264_CAVLC_INTRA ||
i_profile_idc == PROFILE_H264_SVC_BASELINE ||
i_profile_idc == PROFILE_H264_SVC_HIGH ||
i_profile_idc == PROFILE_H264_MVC_MULTIVIEW_HIGH ||
i_profile_idc == PROFILE_H264_MVC_STEREO_HIGH ||
i_profile_idc == PROFILE_H264_MVC_MULTIVIEW_DEPTH_HIGH ||
i_profile_idc == PROFILE_H264_MVC_ENHANCED_MULTIVIEW_DEPTH_HIGH ||
i_profile_idc == PROFILE_H264_MFC_HIGH )
{
/* chroma_format_idc */
const int i_chroma_format_idc = bs_read_ue( p_bs );
if( i_chroma_format_idc == 3 )
bs_skip( p_bs, 1 ); /* separate_colour_plane_flag */
/* bit_depth_luma_minus8 */
bs_read_ue( p_bs );
/* bit_depth_chroma_minus8 */
bs_read_ue( p_bs );
/* qpprime_y_zero_transform_bypass_flag */
bs_skip( p_bs, 1 );
/* seq_scaling_matrix_present_flag */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
for( int i = 0; i < ((3 != i_chroma_format_idc) ? 8 : 12); i++ )
{
/* seq_scaling_list_present_flag[i] */
i_tmp = bs_read( p_bs, 1 );
if( !i_tmp )
continue;
const int i_size_of_scaling_list = (i < 6 ) ? 16 : 64;
/* scaling_list (...) */
int i_lastscale = 8;
int i_nextscale = 8;
for( int j = 0; j < i_size_of_scaling_list; j++ )
{
if( i_nextscale != 0 )
{
/* delta_scale */
i_tmp = bs_read_se( p_bs );
i_nextscale = ( i_lastscale + i_tmp + 256 ) % 256;
/* useDefaultScalingMatrixFlag = ... */
}
/* scalinglist[j] */
i_lastscale = ( i_nextscale == 0 ) ? i_lastscale : i_nextscale;
}
}
}
}
/* Skip i_log2_max_frame_num */
p_sps->i_log2_max_frame_num = bs_read_ue( p_bs );
if( p_sps->i_log2_max_frame_num > 12)
p_sps->i_log2_max_frame_num = 12;
/* Read poc_type */
p_sps->i_pic_order_cnt_type = bs_read_ue( p_bs );
if( p_sps->i_pic_order_cnt_type == 0 )
{
/* skip i_log2_max_poc_lsb */
p_sps->i_log2_max_pic_order_cnt_lsb = bs_read_ue( p_bs );
if( p_sps->i_log2_max_pic_order_cnt_lsb > 12 )
p_sps->i_log2_max_pic_order_cnt_lsb = 12;
}
else if( p_sps->i_pic_order_cnt_type == 1 )
{
int i_cycle;
/* skip b_delta_pic_order_always_zero */
p_sps->i_delta_pic_order_always_zero_flag = bs_read( p_bs, 1 );
/* skip i_offset_for_non_ref_pic */
bs_read_se( p_bs );
/* skip i_offset_for_top_to_bottom_field */
bs_read_se( p_bs );
/* read i_num_ref_frames_in_poc_cycle */
i_cycle = bs_read_ue( p_bs );
if( i_cycle > 256 ) i_cycle = 256;
while( i_cycle > 0 )
{
/* skip i_offset_for_ref_frame */
bs_read_se(p_bs );
i_cycle--;
}
}
/* i_num_ref_frames */
bs_read_ue( p_bs );
/* b_gaps_in_frame_num_value_allowed */
bs_skip( p_bs, 1 );
/* Read size */
p_sps->pic_width_in_mbs_minus1 = bs_read_ue( p_bs );
p_sps->pic_height_in_map_units_minus1 = bs_read_ue( p_bs );
/* b_frame_mbs_only */
p_sps->frame_mbs_only_flag = bs_read( p_bs, 1 );
if( !p_sps->frame_mbs_only_flag )
bs_skip( p_bs, 1 );
/* b_direct8x8_inference */
bs_skip( p_bs, 1 );
/* crop */
if( bs_read1( p_bs ) ) /* frame_cropping_flag */
{
p_sps->frame_crop.left_offset = bs_read_ue( p_bs );
p_sps->frame_crop.right_offset = bs_read_ue( p_bs );
p_sps->frame_crop.right_offset = bs_read_ue( p_bs );
p_sps->frame_crop.bottom_offset = bs_read_ue( p_bs );
}
/* vui */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
p_sps->vui.b_valid = true;
/* read the aspect ratio part if any */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
static const struct { int w, h; } sar[17] =
{
{ 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 }, { 4, 3 }, { 3, 2 },
{ 2, 1 },
};
int i_sar = bs_read( p_bs, 8 );
int w, h;
if( i_sar < 17 )
{
w = sar[i_sar].w;
h = sar[i_sar].h;
}
else if( i_sar == 255 )
{
w = bs_read( p_bs, 16 );
h = bs_read( p_bs, 16 );
}
else
{
w = 0;
h = 0;
}
if( w != 0 && h != 0 )
{
p_sps->vui.i_sar_num = w;
p_sps->vui.i_sar_den = h;
}
else
{
p_sps->vui.i_sar_num = 1;
p_sps->vui.i_sar_den = 1;
}
}
/* overscan */
i_tmp = bs_read( p_bs, 1 );
if ( i_tmp )
bs_read( p_bs, 1 );
/* video signal type */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
bs_read( p_bs, 4 );
/* colour desc */
bs_read( p_bs, 1 );
if ( i_tmp )
bs_read( p_bs, 24 );
}
/* chroma loc info */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
bs_read_ue( p_bs );
bs_read_ue( p_bs );
}
/* timing info */
p_sps->vui.b_timing_info_present_flag = bs_read( p_bs, 1 );
if( p_sps->vui.b_timing_info_present_flag )
{
p_sps->vui.i_num_units_in_tick = bs_read( p_bs, 32 );
p_sps->vui.i_time_scale = bs_read( p_bs, 32 );
p_sps->vui.b_fixed_frame_rate = bs_read( p_bs, 1 );
}
/* Nal hrd & VC1 hrd parameters */
p_sps->vui.b_cpb_dpb_delays_present_flag = false;
for ( int i=0; i<2; i++ )
{
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
p_sps->vui.b_cpb_dpb_delays_present_flag = true;
uint32_t count = bs_read_ue( p_bs ) + 1;
bs_read( p_bs, 4 );
bs_read( p_bs, 4 );
for( uint32_t i=0; i<count; i++ )
{
bs_read_ue( p_bs );
bs_read_ue( p_bs );
bs_read( p_bs, 1 );
}
bs_read( p_bs, 5 );
p_sps->vui.i_cpb_removal_delay_length_minus1 = bs_read( p_bs, 5 );
p_sps->vui.i_dpb_output_delay_length_minus1 = bs_read( p_bs, 5 );
bs_read( p_bs, 5 );
}
}
if( p_sps->vui.b_cpb_dpb_delays_present_flag )
bs_read( p_bs, 1 );
/* pic struct info */
p_sps->vui.b_pic_struct_present_flag = bs_read( p_bs, 1 );
/* + unparsed remains */
}
return true;
}
