ratecontrol.o h263.o ituh263enc.o flvenc.o mpeg12data.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H264_DECODER) += h264.o h264idct.o h264pred.o h264_loopfilter.o h264_direct.o cabac.o \
+ h264_sei.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H264_ENCODER) += h264enc.o h264dspenc.o
OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
motion_est.o h263.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_SVQ3_DECODER) += h264.o svq3.o h264idct.o h264pred.o h264_loopfilter.o h264_direct.o \
+ h264_sei.o \
cabac.o \
mpegvideo.o error_resilience.o \
svq1dec.o svq1.o h263.o
memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
}
-/**
- * Reset SEI values at the beginning of the frame.
- *
- * @param h H.264 context.
- */
-static void reset_sei(H264Context *h) {
- h->sei_recovery_frame_cnt = -1;
- h->sei_dpb_output_delay = 0;
- h->sei_cpb_removal_delay = -1;
- h->sei_buffering_period_present = 0;
-}
-
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
H264Context *h= avctx->priv_data;
MpegEncContext * const s = &h->s;
h->thread_context[0] = h;
h->outputed_poc = INT_MIN;
h->prev_poc_msb= 1<<16;
- reset_sei(h);
+ ff_h264_reset_sei(h);
if(avctx->codec_id == CODEC_ID_H264){
if(avctx->ticks_per_frame == 1){
s->avctx->time_base.den *=2;
if(h->s.current_picture_ptr)
h->s.current_picture_ptr->reference= 0;
h->s.first_field= 0;
- reset_sei(h);
+ ff_h264_reset_sei(h);
ff_mpeg_flush(avctx);
}
return -1; //not reached
}
-static int decode_picture_timing(H264Context *h){
- MpegEncContext * const s = &h->s;
- if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){
- h->sei_cpb_removal_delay = get_bits(&s->gb, h->sps.cpb_removal_delay_length);
- h->sei_dpb_output_delay = get_bits(&s->gb, h->sps.dpb_output_delay_length);
- }
- if(h->sps.pic_struct_present_flag){
- unsigned int i, num_clock_ts;
- h->sei_pic_struct = get_bits(&s->gb, 4);
- h->sei_ct_type = 0;
-
- if (h->sei_pic_struct > SEI_PIC_STRUCT_FRAME_TRIPLING)
- return -1;
-
- num_clock_ts = sei_num_clock_ts_table[h->sei_pic_struct];
-
- for (i = 0 ; i < num_clock_ts ; i++){
- if(get_bits(&s->gb, 1)){ /* clock_timestamp_flag */
- unsigned int full_timestamp_flag;
- h->sei_ct_type |= 1<<get_bits(&s->gb, 2);
- skip_bits(&s->gb, 1); /* nuit_field_based_flag */
- skip_bits(&s->gb, 5); /* counting_type */
- full_timestamp_flag = get_bits(&s->gb, 1);
- skip_bits(&s->gb, 1); /* discontinuity_flag */
- skip_bits(&s->gb, 1); /* cnt_dropped_flag */
- skip_bits(&s->gb, 8); /* n_frames */
- if(full_timestamp_flag){
- skip_bits(&s->gb, 6); /* seconds_value 0..59 */
- skip_bits(&s->gb, 6); /* minutes_value 0..59 */
- skip_bits(&s->gb, 5); /* hours_value 0..23 */
- }else{
- if(get_bits(&s->gb, 1)){ /* seconds_flag */
- skip_bits(&s->gb, 6); /* seconds_value range 0..59 */
- if(get_bits(&s->gb, 1)){ /* minutes_flag */
- skip_bits(&s->gb, 6); /* minutes_value 0..59 */
- if(get_bits(&s->gb, 1)) /* hours_flag */
- skip_bits(&s->gb, 5); /* hours_value 0..23 */
- }
- }
- }
- if(h->sps.time_offset_length > 0)
- skip_bits(&s->gb, h->sps.time_offset_length); /* time_offset */
- }
- }
-
- if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n", h->sei_ct_type, h->sei_pic_struct);
- }
- return 0;
-}
-
-static int decode_unregistered_user_data(H264Context *h, int size){
- MpegEncContext * const s = &h->s;
- uint8_t user_data[16+256];
- int e, build, i;
-
- if(size<16)
- return -1;
-
- for(i=0; i<sizeof(user_data)-1 && i<size; i++){
- user_data[i]= get_bits(&s->gb, 8);
- }
-
- user_data[i]= 0;
- e= sscanf(user_data+16, "x264 - core %d"/*%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html*/, &build);
- if(e==1 && build>=0)
- h->x264_build= build;
-
- if(s->avctx->debug & FF_DEBUG_BUGS)
- av_log(s->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data+16);
-
- for(; i<size; i++)
- skip_bits(&s->gb, 8);
-
- return 0;
-}
-
-static int decode_recovery_point(H264Context *h){
- MpegEncContext * const s = &h->s;
-
- h->sei_recovery_frame_cnt = get_ue_golomb(&s->gb);
- skip_bits(&s->gb, 4); /* 1b exact_match_flag, 1b broken_link_flag, 2b changing_slice_group_idc */
-
- return 0;
-}
-
-static int decode_buffering_period(H264Context *h){
- MpegEncContext * const s = &h->s;
- unsigned int sps_id;
- int sched_sel_idx;
- SPS *sps;
-
- sps_id = get_ue_golomb_31(&s->gb);
- if(sps_id > 31 || !h->sps_buffers[sps_id]) {
- av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %d referenced in buffering period\n", sps_id);
- return -1;
- }
- sps = h->sps_buffers[sps_id];
-
- // NOTE: This is really so duplicated in the standard... See H.264, D.1.1
- if (sps->nal_hrd_parameters_present_flag) {
- for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
- h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length);
- skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
- }
- }
- if (sps->vcl_hrd_parameters_present_flag) {
- for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
- h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length);
- skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
- }
- }
-
- h->sei_buffering_period_present = 1;
- return 0;
-}
-
-int ff_h264_decode_sei(H264Context *h){
- MpegEncContext * const s = &h->s;
-
- while(get_bits_count(&s->gb) + 16 < s->gb.size_in_bits){
- int size, type;
-
- type=0;
- do{
- type+= show_bits(&s->gb, 8);
- }while(get_bits(&s->gb, 8) == 255);
-
- size=0;
- do{
- size+= show_bits(&s->gb, 8);
- }while(get_bits(&s->gb, 8) == 255);
-
- switch(type){
- case SEI_TYPE_PIC_TIMING: // Picture timing SEI
- if(decode_picture_timing(h) < 0)
- return -1;
- break;
- case SEI_TYPE_USER_DATA_UNREGISTERED:
- if(decode_unregistered_user_data(h, size) < 0)
- return -1;
- break;
- case SEI_TYPE_RECOVERY_POINT:
- if(decode_recovery_point(h) < 0)
- return -1;
- break;
- case SEI_BUFFERING_PERIOD:
- if(decode_buffering_period(h) < 0)
- return -1;
- break;
- default:
- skip_bits(&s->gb, 8*size);
- }
-
- //FIXME check bits here
- align_get_bits(&s->gb);
- }
-
- return 0;
-}
-
static inline int decode_hrd_parameters(H264Context *h, SPS *sps){
MpegEncContext * const s = &h->s;
int cpb_count, i;
h->current_slice = 0;
if (!s->first_field)
s->current_picture_ptr= NULL;
- reset_sei(h);
+ ff_h264_reset_sei(h);
}
for(;;){
void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
void ff_h264_filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
+/**
+ * Reset SEI values at the beginning of the frame.
+ *
+ * @param h H.264 context.
+ */
+void ff_h264_reset_sei(H264Context *h);
+
+
/*
o-o o-o
/ / /
--- /dev/null
+/*
+ * H.26L/H.264/AVC/JVT/14496-10/... sei decoding
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file libavcodec/h264-sei.c
+ * H.264 / AVC / MPEG4 part10 sei decoding.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "internal.h"
+#include "avcodec.h"
+#include "h264.h"
+#include "golomb.h"
+
+//#undef NDEBUG
+#include <assert.h>
+
+static const uint8_t sei_num_clock_ts_table[9]={
+ 1, 1, 1, 2, 2, 3, 3, 2, 3
+};
+
+void ff_h264_reset_sei(H264Context *h) {
+ h->sei_recovery_frame_cnt = -1;
+ h->sei_dpb_output_delay = 0;
+ h->sei_cpb_removal_delay = -1;
+ h->sei_buffering_period_present = 0;
+}
+
+static int decode_picture_timing(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){
+ h->sei_cpb_removal_delay = get_bits(&s->gb, h->sps.cpb_removal_delay_length);
+ h->sei_dpb_output_delay = get_bits(&s->gb, h->sps.dpb_output_delay_length);
+ }
+ if(h->sps.pic_struct_present_flag){
+ unsigned int i, num_clock_ts;
+ h->sei_pic_struct = get_bits(&s->gb, 4);
+ h->sei_ct_type = 0;
+
+ if (h->sei_pic_struct > SEI_PIC_STRUCT_FRAME_TRIPLING)
+ return -1;
+
+ num_clock_ts = sei_num_clock_ts_table[h->sei_pic_struct];
+
+ for (i = 0 ; i < num_clock_ts ; i++){
+ if(get_bits(&s->gb, 1)){ /* clock_timestamp_flag */
+ unsigned int full_timestamp_flag;
+ h->sei_ct_type |= 1<<get_bits(&s->gb, 2);
+ skip_bits(&s->gb, 1); /* nuit_field_based_flag */
+ skip_bits(&s->gb, 5); /* counting_type */
+ full_timestamp_flag = get_bits(&s->gb, 1);
+ skip_bits(&s->gb, 1); /* discontinuity_flag */
+ skip_bits(&s->gb, 1); /* cnt_dropped_flag */
+ skip_bits(&s->gb, 8); /* n_frames */
+ if(full_timestamp_flag){
+ skip_bits(&s->gb, 6); /* seconds_value 0..59 */
+ skip_bits(&s->gb, 6); /* minutes_value 0..59 */
+ skip_bits(&s->gb, 5); /* hours_value 0..23 */
+ }else{
+ if(get_bits(&s->gb, 1)){ /* seconds_flag */
+ skip_bits(&s->gb, 6); /* seconds_value range 0..59 */
+ if(get_bits(&s->gb, 1)){ /* minutes_flag */
+ skip_bits(&s->gb, 6); /* minutes_value 0..59 */
+ if(get_bits(&s->gb, 1)) /* hours_flag */
+ skip_bits(&s->gb, 5); /* hours_value 0..23 */
+ }
+ }
+ }
+ if(h->sps.time_offset_length > 0)
+ skip_bits(&s->gb, h->sps.time_offset_length); /* time_offset */
+ }
+ }
+
+ if(s->avctx->debug & FF_DEBUG_PICT_INFO)
+ av_log(s->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n", h->sei_ct_type, h->sei_pic_struct);
+ }
+ return 0;
+}
+
+static int decode_unregistered_user_data(H264Context *h, int size){
+ MpegEncContext * const s = &h->s;
+ uint8_t user_data[16+256];
+ int e, build, i;
+
+ if(size<16)
+ return -1;
+
+ for(i=0; i<sizeof(user_data)-1 && i<size; i++){
+ user_data[i]= get_bits(&s->gb, 8);
+ }
+
+ user_data[i]= 0;
+ e= sscanf(user_data+16, "x264 - core %d"/*%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html*/, &build);
+ if(e==1 && build>=0)
+ h->x264_build= build;
+
+ if(s->avctx->debug & FF_DEBUG_BUGS)
+ av_log(s->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data+16);
+
+ for(; i<size; i++)
+ skip_bits(&s->gb, 8);
+
+ return 0;
+}
+
+static int decode_recovery_point(H264Context *h){
+ MpegEncContext * const s = &h->s;
+
+ h->sei_recovery_frame_cnt = get_ue_golomb(&s->gb);
+ skip_bits(&s->gb, 4); /* 1b exact_match_flag, 1b broken_link_flag, 2b changing_slice_group_idc */
+
+ return 0;
+}
+
+static int decode_buffering_period(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ unsigned int sps_id;
+ int sched_sel_idx;
+ SPS *sps;
+
+ sps_id = get_ue_golomb_31(&s->gb);
+ if(sps_id > 31 || !h->sps_buffers[sps_id]) {
+ av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %d referenced in buffering period\n", sps_id);
+ return -1;
+ }
+ sps = h->sps_buffers[sps_id];
+
+ // NOTE: This is really so duplicated in the standard... See H.264, D.1.1
+ if (sps->nal_hrd_parameters_present_flag) {
+ for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
+ h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length);
+ skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
+ }
+ }
+ if (sps->vcl_hrd_parameters_present_flag) {
+ for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
+ h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length);
+ skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
+ }
+ }
+
+ h->sei_buffering_period_present = 1;
+ return 0;
+}
+
+int ff_h264_decode_sei(H264Context *h){
+ MpegEncContext * const s = &h->s;
+
+ while(get_bits_count(&s->gb) + 16 < s->gb.size_in_bits){
+ int size, type;
+
+ type=0;
+ do{
+ type+= show_bits(&s->gb, 8);
+ }while(get_bits(&s->gb, 8) == 255);
+
+ size=0;
+ do{
+ size+= show_bits(&s->gb, 8);
+ }while(get_bits(&s->gb, 8) == 255);
+
+ switch(type){
+ case SEI_TYPE_PIC_TIMING: // Picture timing SEI
+ if(decode_picture_timing(h) < 0)
+ return -1;
+ break;
+ case SEI_TYPE_USER_DATA_UNREGISTERED:
+ if(decode_unregistered_user_data(h, size) < 0)
+ return -1;
+ break;
+ case SEI_TYPE_RECOVERY_POINT:
+ if(decode_recovery_point(h) < 0)
+ return -1;
+ break;
+ case SEI_BUFFERING_PERIOD:
+ if(decode_buffering_period(h) < 0)
+ return -1;
+ break;
+ default:
+ skip_bits(&s->gb, 8*size);
+ }
+
+ //FIXME check bits here
+ align_get_bits(&s->gb);
+ }
+
+ return 0;
+}
}
};
-static const uint8_t sei_num_clock_ts_table[9]={
- 1, 1, 1, 2, 2, 3, 3, 2, 3
-};
-
#endif /* AVCODEC_H264DATA_H */