# include "config.h"
#endif
-#include <vlc/vlc.h>
+#include <vlc_common.h>
+#include <vlc_plugin.h>
#include <vlc_sout.h>
#include <vlc_codec.h>
#include <vlc_block.h>
vlc_module_begin();
set_category( CAT_SOUT );
set_subcategory( SUBCAT_SOUT_PACKETIZER );
- set_description( _("H.264 video packetizer") );
+ set_description( N_("H.264 video packetizer") );
set_capability( "packetizer", 50 );
set_callbacks( Open, Close );
vlc_module_end();
static block_t *ParseNALBlock( decoder_t *, block_t * );
-static block_t *nal_get_annexeb( decoder_t *, uint8_t *p, int );
+static block_t *CreateAnnexbNAL( decoder_t *, uint8_t *p, int );
+
+static block_t *OutputPicture( decoder_t *p_dec );
+static void PutSPS( decoder_t *p_dec, block_t *p_frag );
+static void PutPPS( decoder_t *p_dec, block_t *p_frag );
+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 );
+
/*****************************************************************************
* Open: probe the packetizer and return score
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys = malloc( sizeof(decoder_sys_t) ) ) == NULL )
{
- msg_Err( p_dec, "out of memory" );
- return VLC_EGENERIC;
+ return VLC_ENOMEM;
}
p_sys->i_state = STATE_NOSYNC;
p_sys->i_offset = 0;
{
return VLC_EGENERIC;
}
- block_t *p_sps = nal_get_annexeb( p_dec, p, i_length );
+ block_t *p_sps = CreateAnnexbNAL( p_dec, p, i_length );
if( !p_sps )
return VLC_EGENERIC;
- p_sys->p_sps = block_Duplicate( p_sps );
- p_sps->i_pts = p_sps->i_dts = mdate();
ParseNALBlock( p_dec, p_sps );
p += i_length;
}
{
return VLC_EGENERIC;
}
- block_t *p_pps = nal_get_annexeb( p_dec, p, i_length );
+ block_t *p_pps = CreateAnnexbNAL( p_dec, p, i_length );
if( !p_pps )
return VLC_EGENERIC;
- p_sys->p_pps = block_Duplicate( p_pps );
- p_pps->i_pts = p_pps->i_dts = mdate();
ParseNALBlock( p_dec, p_pps );
p += i_length;
}
msg_Dbg( p_dec, "avcC length size=%d, sps=%d, pps=%d",
p_sys->i_avcC_length_size, i_sps, i_pps );
+ if( !p_sys->p_sps || p_sys->p_pps )
+ return VLC_EGENERIC;
+
/* FIXME: FFMPEG isn't happy at all if you leave this */
- if( p_dec->fmt_out.i_extra ) free( p_dec->fmt_out.p_extra );
- p_dec->fmt_out.i_extra = 0; p_dec->fmt_out.p_extra = NULL;
+ if( p_dec->fmt_out.i_extra > 0 ) free( p_dec->fmt_out.p_extra );
+ p_dec->fmt_out.i_extra = 0;
+ p_dec->fmt_out.p_extra = NULL;
/* Set the new extradata */
p_dec->fmt_out.i_extra = p_sys->p_pps->i_buffer + p_sys->p_sps->i_buffer;
- p_dec->fmt_out.p_extra = (uint8_t*)malloc( p_dec->fmt_out.i_extra );
+ p_dec->fmt_out.p_extra = malloc( p_dec->fmt_out.i_extra );
if( p_dec->fmt_out.p_extra )
{
- memcpy( (uint8_t*)p_dec->fmt_out.p_extra, p_sys->p_sps->p_buffer, p_sys->p_sps->i_buffer);
- memcpy( (uint8_t*)p_dec->fmt_out.p_extra+p_sys->p_sps->i_buffer, p_sys->p_pps->p_buffer, p_sys->p_pps->i_buffer);
+ memcpy( (uint8_t*)p_dec->fmt_out.p_extra,
+ p_sys->p_sps->p_buffer, p_sys->p_sps->i_buffer);
+ memcpy( (uint8_t*)p_dec->fmt_out.p_extra+p_sys->p_sps->i_buffer,
+ p_sys->p_pps->p_buffer, p_sys->p_pps->i_buffer);
p_sys->b_header = true;
}
else p_dec->fmt_out.i_extra = 0;
break;
}
- block_t *p_part = nal_get_annexeb( p_dec, p, i_size );
+ block_t *p_part = CreateAnnexbNAL( p_dec, p, i_size );
if( !p_part )
break;
p_part->i_dts = p_block->i_dts;
return p_ret;
}
-static block_t *nal_get_annexeb( decoder_t *p_dec, uint8_t *p, int i_size )
+/****************************************************************************
+ * Helpers
+ ****************************************************************************/
+static block_t *CreateAnnexbNAL( decoder_t *p_dec, uint8_t *p, int i_size )
{
block_t *p_nal;
/* Copy nalu */
memcpy( &p_nal->p_buffer[4], p, i_size );
+ VLC_UNUSED(p_dec);
return p_nal;
}
-static void nal_get_decoded( uint8_t **pp_ret, int *pi_ret,
+static void CreateDecodedNAL( uint8_t **pp_ret, int *pi_ret,
uint8_t *src, int i_src )
{
uint8_t *end = &src[i_src];
const int i_nal_ref_idc = (p_frag->p_buffer[4] >> 5)&0x03;
const int i_nal_type = p_frag->p_buffer[4]&0x1f;
-#define OUTPUT \
- do { \
- if( !p_sys->b_header && p_sys->slice.i_frame_type != BLOCK_FLAG_TYPE_I) \
- break; \
- \
- if( p_sys->slice.i_frame_type == BLOCK_FLAG_TYPE_I && p_sys->p_sps && p_sys->p_pps ) \
- { \
- block_t *p_sps = block_Duplicate( p_sys->p_sps ); \
- block_t *p_pps = block_Duplicate( p_sys->p_pps ); \
- p_sps->i_dts = p_sys->p_frame->i_dts; \
- p_sps->i_pts = p_sys->p_frame->i_pts; \
- block_ChainAppend( &p_sps, p_pps ); \
- block_ChainAppend( &p_sps, p_sys->p_frame ); \
- p_sys->b_header = true; \
- p_pic = block_ChainGather( p_sps ); \
- } else { \
- p_pic = block_ChainGather( p_sys->p_frame ); \
- } \
- p_pic->i_length = 0; /* FIXME */ \
- p_pic->i_flags |= p_sys->slice.i_frame_type; \
- \
- p_sys->slice.i_frame_type = 0; \
- p_sys->p_frame = NULL; \
- p_sys->b_slice = false; \
- } while(0)
-
if( p_sys->b_slice && ( !p_sys->b_sps || !p_sys->b_pps ) )
{
block_ChainRelease( p_sys->p_frame );
}
else if( i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
{
- uint8_t *dec = NULL;
- int i_dec = 0, i_first_mb, i_slice_type;
slice_t slice;
- bool b_pic;
- bs_t s;
+ bool b_new_picture;
- /* do not convert the whole frame */
- nal_get_decoded( &dec, &i_dec, &p_frag->p_buffer[5],
- __MIN( p_frag->i_buffer - 5, 60 ) );
- bs_init( &s, dec, i_dec );
+ ParseSlice( p_dec, &b_new_picture, &slice, i_nal_ref_idc, i_nal_type, p_frag );
- /* 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:
- 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;
- }
+ /* */
+ if( b_new_picture && p_sys->b_slice )
+ p_pic = OutputPicture( p_dec );
/* */
- slice.i_nal_type = i_nal_type;
- slice.i_nal_ref_idc = i_nal_ref_idc;
+ p_sys->slice = slice;
+ p_sys->b_slice = true;
+ }
+ else if( i_nal_type == NAL_SPS )
+ {
+ if( p_sys->b_slice )
+ p_pic = OutputPicture( p_dec );
- 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 );
+ PutSPS( p_dec, p_frag );
- 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 );
- }
+ /* Do not append the SPS because we will insert it on keyframes */
+ return p_pic;
+ }
+ else if( i_nal_type == NAL_PPS )
+ {
+ if( p_sys->b_slice )
+ p_pic = OutputPicture( p_dec );
- 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 );
+ PutPPS( p_dec, p_frag );
- 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 );
- }
+ /* Do not append the PPS because we will insert it on keyframes */
+ return p_pic;
+ }
+ else if( i_nal_type == NAL_AU_DELIMITER ||
+ i_nal_type == NAL_SEI ||
+ ( i_nal_type >= 13 && i_nal_type <= 18 ) )
+ {
+ if( p_sys->b_slice )
+ p_pic = OutputPicture( p_dec );
+ }
- /* Detection of the first VCL NAL unit of a primary coded picture
- * (cf. 7.4.1.2.4) */
- 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;
+ /* Append the block */
+ block_ChainAppend( &p_sys->p_frame, p_frag );
- /* */
- p_sys->slice = slice;
+ return p_pic;
+}
- if( b_pic && p_sys->b_slice )
- OUTPUT;
+static block_t *OutputPicture( decoder_t *p_dec )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ block_t *p_pic;
- p_sys->b_slice = true;
+ if( !p_sys->b_header && p_sys->slice.i_frame_type != BLOCK_FLAG_TYPE_I)
+ return NULL;
- free( dec );
+ if( p_sys->slice.i_frame_type == BLOCK_FLAG_TYPE_I && p_sys->p_sps && p_sys->p_pps )
+ {
+ block_t *p_sps = block_Duplicate( p_sys->p_sps );
+ block_t *p_pps = block_Duplicate( p_sys->p_pps );
+ p_sps->i_dts = p_sys->p_frame->i_dts;
+ p_sps->i_pts = p_sys->p_frame->i_pts;
+ block_ChainAppend( &p_sps, p_pps );
+ block_ChainAppend( &p_sps, p_sys->p_frame );
+ p_sys->b_header = true;
+ p_pic = block_ChainGather( p_sps );
}
- else if( i_nal_type == NAL_SPS )
+ else
{
- uint8_t *dec = NULL;
- int i_dec = 0;
- bs_t s;
- int i_tmp;
-
- if( !p_sys->b_sps ) msg_Dbg( p_dec, "found NAL_SPS" );
-
- p_sys->b_sps = true;
+ p_pic = block_ChainGather( p_sys->p_frame );
+ }
+ p_pic->i_length = 0; /* FIXME */
+ p_pic->i_flags |= p_sys->slice.i_frame_type;
- nal_get_decoded( &dec, &i_dec, &p_frag->p_buffer[5],
- p_frag->i_buffer - 5 );
+ p_sys->slice.i_frame_type = 0;
+ p_sys->p_frame = NULL;
+ p_sys->b_slice = false;
- 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 );
- 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_num_ref_frames */
- bs_read_ue( &s );
- /* b_gaps_in_frame_num_value_allowed */
- bs_skip( &s, 1 );
+ return p_pic;
+}
- /* 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 );
+static void PutSPS( decoder_t *p_dec, block_t *p_frag )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
- /* b_frame_mbs_only */
- p_sys->b_frame_mbs_only = bs_read( &s, 1 );
- if( p_sys->b_frame_mbs_only == 0 )
+ uint8_t *dec = NULL;
+ int i_dec = 0;
+ bs_t s;
+ int i_tmp;
+
+ if( !p_sys->b_sps )
+ msg_Dbg( p_dec, "found NAL_SPS" );
+
+ p_sys->b_sps = true;
+
+ CreateDecodedNAL( &dec, &i_dec, &p_frag->p_buffer[5],
+ p_frag->i_buffer - 5 );
+
+ 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 );
+ 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 )
{
- bs_skip( &s, 1 );
+ /* skip i_offset_for_ref_frame */
+ bs_read_se(&s );
}
- /* b_direct8x8_inference */
+ }
+ /* 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 );
- }
+ /* 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 */
+ /* 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 )
{
- /* 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[17] =
{
- 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 );
- }
- if( h != 0 )
- 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;
- else
- p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR;
+ { 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( h != 0 )
+ 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;
+ else
+ p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR;
}
+ }
- free( dec );
+ free( dec );
- if( p_sys->b_slice ) OUTPUT;
+ /* We have a new SPS */
+ if( p_sys->p_sps )
+ block_Release( p_sys->p_sps );
+ p_sys->p_sps = p_frag;
+}
- /* We have a new SPS */
- if( p_sys->p_sps ) block_Release( p_sys->p_sps );
- p_sys->p_sps = p_frag;
+static void PutPPS( decoder_t *p_dec, block_t *p_frag )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ bs_t s;
- /* Do not append the SPS because we will insert it on keyframes */
- return p_pic;
- }
- else if( i_nal_type == NAL_PPS )
- {
- bs_t s;
+ bs_init( &s, &p_frag->p_buffer[5], p_frag->i_buffer - 5 );
+ bs_read_ue( &s ); // pps id
+ bs_read_ue( &s ); // sps id
+ bs_skip( &s, 1 ); // entropy coding mode flag
+ p_sys->i_pic_order_present_flag = bs_read( &s, 1 );
+
+ if( !p_sys->b_pps )
+ msg_Dbg( p_dec, "found NAL_PPS" );
+ p_sys->b_pps = true;
- bs_init( &s, &p_frag->p_buffer[5], p_frag->i_buffer - 5 );
- bs_read_ue( &s ); // pps id
- bs_read_ue( &s ); // sps id
- bs_skip( &s, 1 ); // entropy coding mode flag
- p_sys->i_pic_order_present_flag = bs_read( &s, 1 );
+ /* TODO */
- if( !p_sys->b_pps ) msg_Dbg( p_dec, "found NAL_PPS" );
- p_sys->b_pps = true;
+ /* We have a new PPS */
+ if( p_sys->p_pps )
+ block_Release( p_sys->p_pps );
+ p_sys->p_pps = p_frag;
+}
- /* TODO */
+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_first_mb, i_slice_type;
+ slice_t slice;
+ bs_t s;
- if( p_sys->b_slice ) OUTPUT;
+ /* 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 );
- /* We have a new PPS */
- if( p_sys->p_pps ) block_Release( p_sys->p_pps );
- p_sys->p_pps = p_frag;
+ /* first_mb_in_slice */
+ i_first_mb = bs_read_ue( &s );
- /* Do not append the PPS because we will insert it on keyframes */
- return p_pic;
+ /* 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;
}
- else if( i_nal_type == NAL_AU_DELIMITER ||
- i_nal_type == NAL_SEI ||
- ( i_nal_type >= 13 && i_nal_type <= 18 ) )
+
+ /* */
+ 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 )
{
- if( p_sys->b_slice ) OUTPUT;
+ /* 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 );
}
-#undef OUTPUT
+ 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 );
- /* Append the block */
- block_ChainAppend( &p_sys->p_frame, p_frag );
+ 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;
- return p_pic;
+ /* */
+ *pb_new_picture = b_pic;
+ *p_slice = slice;
}
+
+
projects / vlc / blobdiff