diff options
Diffstat (limited to 'ffmpeg/libavcodec/h264_sei.c')
| -rw-r--r-- | ffmpeg/libavcodec/h264_sei.c | 277 |
1 files changed, 203 insertions, 74 deletions
diff --git a/ffmpeg/libavcodec/h264_sei.c b/ffmpeg/libavcodec/h264_sei.c index be6cb58..12d709b 100644 --- a/ffmpeg/libavcodec/h264_sei.c +++ b/ffmpeg/libavcodec/h264_sei.c @@ -30,71 +30,87 @@ #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 +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) { +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; + h->sei_frame_packing_present = 0; } -static int decode_picture_timing(H264Context *h){ - if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){ - h->sei_cpb_removal_delay = get_bits_long(&h->gb, h->sps.cpb_removal_delay_length); - h->sei_dpb_output_delay = get_bits_long(&h->gb, h->sps.dpb_output_delay_length); +static int decode_picture_timing(H264Context *h) +{ + SPS *sps = &h->sps; + int i; + + for (i = 0; i<MAX_SPS_COUNT; i++) + if (!sps->log2_max_frame_num && h->sps_buffers[i]) + sps = h->sps_buffers[i]; + + if (sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag) { + h->sei_cpb_removal_delay = get_bits_long(&h->gb, + sps->cpb_removal_delay_length); + h->sei_dpb_output_delay = get_bits_long(&h->gb, + sps->dpb_output_delay_length); } - if(h->sps.pic_struct_present_flag){ + if (sps->pic_struct_present_flag) { unsigned int i, num_clock_ts; + h->sei_pic_struct = get_bits(&h->gb, 4); h->sei_ct_type = 0; if (h->sei_pic_struct > SEI_PIC_STRUCT_FRAME_TRIPLING) - return -1; + return AVERROR_INVALIDDATA; num_clock_ts = sei_num_clock_ts_table[h->sei_pic_struct]; - for (i = 0 ; i < num_clock_ts ; i++){ - if(get_bits(&h->gb, 1)){ /* clock_timestamp_flag */ + for (i = 0; i < num_clock_ts; i++) { + if (get_bits(&h->gb, 1)) { /* clock_timestamp_flag */ unsigned int full_timestamp_flag; - h->sei_ct_type |= 1<<get_bits(&h->gb, 2); + + h->sei_ct_type |= 1 << get_bits(&h->gb, 2); skip_bits(&h->gb, 1); /* nuit_field_based_flag */ skip_bits(&h->gb, 5); /* counting_type */ full_timestamp_flag = get_bits(&h->gb, 1); skip_bits(&h->gb, 1); /* discontinuity_flag */ skip_bits(&h->gb, 1); /* cnt_dropped_flag */ skip_bits(&h->gb, 8); /* n_frames */ - if(full_timestamp_flag){ + if (full_timestamp_flag) { skip_bits(&h->gb, 6); /* seconds_value 0..59 */ skip_bits(&h->gb, 6); /* minutes_value 0..59 */ skip_bits(&h->gb, 5); /* hours_value 0..23 */ - }else{ - if(get_bits(&h->gb, 1)){ /* seconds_flag */ + } else { + if (get_bits(&h->gb, 1)) { /* seconds_flag */ skip_bits(&h->gb, 6); /* seconds_value range 0..59 */ - if(get_bits(&h->gb, 1)){ /* minutes_flag */ + if (get_bits(&h->gb, 1)) { /* minutes_flag */ skip_bits(&h->gb, 6); /* minutes_value 0..59 */ - if(get_bits(&h->gb, 1)) /* hours_flag */ + if (get_bits(&h->gb, 1)) /* hours_flag */ skip_bits(&h->gb, 5); /* hours_value 0..23 */ } } } - if(h->sps.time_offset_length > 0) - skip_bits(&h->gb, h->sps.time_offset_length); /* time_offset */ + if (sps->time_offset_length > 0) + skip_bits(&h->gb, + sps->time_offset_length); /* time_offset */ } } - if(h->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(h->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n", h->sei_ct_type, h->sei_pic_struct); + if (h->avctx->debug & FF_DEBUG_PICT_INFO) + av_log(h->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n", + h->sei_ct_type, h->sei_pic_struct); } return 0; } -static int decode_user_data_itu_t_t35(H264Context *h, int size) { +static int decode_user_data_itu_t_t35(H264Context *h, int size) +{ uint32_t user_identifier; int dtg_active_format; @@ -130,66 +146,77 @@ static int decode_user_data_itu_t_t35(H264Context *h, int size) { return 0; } -static int decode_unregistered_user_data(H264Context *h, int size){ - uint8_t user_data[16+256]; +static int decode_unregistered_user_data(H264Context *h, int size) +{ + uint8_t user_data[16 + 256]; int e, build, i; - if(size<16) - return -1; + if (size < 16) + return AVERROR_INVALIDDATA; - for(i=0; i<sizeof(user_data)-1 && i<size; i++){ - user_data[i]= get_bits(&h->gb, 8); - } + for (i = 0; i < sizeof(user_data) - 1 && i < size; i++) + user_data[i] = get_bits(&h->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(e==1 && build==1 && !strncmp(user_data+16, "x264 - core 0000", 16)) + user_data[i] = 0; + e = sscanf(user_data + 16, "x264 - core %d", &build); + if (e == 1 && build > 0) + h->x264_build = build; + if (e == 1 && build == 1 && !strncmp(user_data+16, "x264 - core 0000", 16)) h->x264_build = 67; - if(h->avctx->debug & FF_DEBUG_BUGS) - av_log(h->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data+16); + if (h->avctx->debug & FF_DEBUG_BUGS) + av_log(h->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data + 16); - for(; i<size; i++) + for (; i < size; i++) skip_bits(&h->gb, 8); return 0; } -static int decode_recovery_point(H264Context *h){ +static int decode_recovery_point(H264Context *h) +{ h->sei_recovery_frame_cnt = get_ue_golomb(&h->gb); - skip_bits(&h->gb, 4); /* 1b exact_match_flag, 1b broken_link_flag, 2b changing_slice_group_idc */ - if(h->avctx->debug & FF_DEBUG_PICT_INFO) + /* 1b exact_match_flag, + * 1b broken_link_flag, + * 2b changing_slice_group_idc */ + skip_bits(&h->gb, 4); + + if (h->avctx->debug & FF_DEBUG_PICT_INFO) av_log(h->avctx, AV_LOG_DEBUG, "sei_recovery_frame_cnt: %d\n", h->sei_recovery_frame_cnt); return 0; } -static int decode_buffering_period(H264Context *h){ +static int decode_buffering_period(H264Context *h) +{ unsigned int sps_id; int sched_sel_idx; SPS *sps; sps_id = get_ue_golomb_31(&h->gb); - if(sps_id > 31 || !h->sps_buffers[sps_id]) { - av_log(h->avctx, AV_LOG_ERROR, "non-existing SPS %d referenced in buffering period\n", sps_id); - return -1; + if (sps_id > 31 || !h->sps_buffers[sps_id]) { + av_log(h->avctx, AV_LOG_ERROR, + "non-existing SPS %d referenced in buffering period\n", sps_id); + return AVERROR_INVALIDDATA; } 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_long(&h->gb, sps->initial_cpb_removal_delay_length); - skip_bits(&h->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset + h->initial_cpb_removal_delay[sched_sel_idx] = + get_bits_long(&h->gb, sps->initial_cpb_removal_delay_length); + // initial_cpb_removal_delay_offset + skip_bits(&h->gb, sps->initial_cpb_removal_delay_length); } } 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_long(&h->gb, sps->initial_cpb_removal_delay_length); - skip_bits(&h->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset + h->initial_cpb_removal_delay[sched_sel_idx] = + get_bits_long(&h->gb, sps->initial_cpb_removal_delay_length); + // initial_cpb_removal_delay_offset + skip_bits(&h->gb, sps->initial_cpb_removal_delay_length); } } @@ -197,55 +224,157 @@ static int decode_buffering_period(H264Context *h){ return 0; } -int ff_h264_decode_sei(H264Context *h){ +static int decode_frame_packing_arrangement(H264Context *h) +{ + h->sei_fpa.frame_packing_arrangement_id = get_ue_golomb(&h->gb); + h->sei_fpa.frame_packing_arrangement_cancel_flag = get_bits1(&h->gb); + h->sei_frame_packing_present = !h->sei_fpa.frame_packing_arrangement_cancel_flag; + + if (h->sei_frame_packing_present) { + h->sei_fpa.frame_packing_arrangement_type = + h->frame_packing_arrangement_type = get_bits(&h->gb, 7); + h->sei_fpa.quincunx_sampling_flag = + h->quincunx_subsampling = get_bits1(&h->gb); + h->sei_fpa.content_interpretation_type = + h->content_interpretation_type = get_bits(&h->gb, 6); + + // the following skips: spatial_flipping_flag, frame0_flipped_flag, + // field_views_flag, current_frame_is_frame0_flag, + // frame0_self_contained_flag, frame1_self_contained_flag + skip_bits(&h->gb, 6); + + if (!h->quincunx_subsampling && h->frame_packing_arrangement_type != 5) + skip_bits(&h->gb, 16); // frame[01]_grid_position_[xy] + skip_bits(&h->gb, 8); // frame_packing_arrangement_reserved_byte + h->sei_fpa.frame_packing_arrangement_repetition_period = get_ue_golomb(&h->gb) /* frame_packing_arrangement_repetition_period */; + } + skip_bits1(&h->gb); // frame_packing_arrangement_extension_flag + + if (h->avctx->debug & FF_DEBUG_PICT_INFO) + av_log(h->avctx, AV_LOG_DEBUG, "SEI FPA %d %d %d %d %d %d\n", + h->sei_fpa.frame_packing_arrangement_id, + h->sei_fpa.frame_packing_arrangement_cancel_flag, + h->sei_fpa.frame_packing_arrangement_type, + h->sei_fpa.quincunx_sampling_flag, + h->sei_fpa.content_interpretation_type, + h->sei_fpa.frame_packing_arrangement_repetition_period); + + return 0; +} + +int ff_h264_decode_sei(H264Context *h) +{ while (get_bits_left(&h->gb) > 16) { - int size, type; + int type = 0; + unsigned size = 0; + unsigned next; + int ret = 0; - type=0; - do{ + do { if (get_bits_left(&h->gb) < 8) - return -1; - type+= show_bits(&h->gb, 8); - }while(get_bits(&h->gb, 8) == 255); + return AVERROR_INVALIDDATA; + type += show_bits(&h->gb, 8); + } while (get_bits(&h->gb, 8) == 255); - size=0; - do{ + do { if (get_bits_left(&h->gb) < 8) - return -1; - size+= show_bits(&h->gb, 8); - }while(get_bits(&h->gb, 8) == 255); + return AVERROR_INVALIDDATA; + size += show_bits(&h->gb, 8); + } while (get_bits(&h->gb, 8) == 255); - if(h->avctx->debug&FF_DEBUG_STARTCODE) + if (h->avctx->debug&FF_DEBUG_STARTCODE) av_log(h->avctx, AV_LOG_DEBUG, "SEI %d len:%d\n", type, size); - switch(type){ + if (size > get_bits_left(&h->gb) / 8) { + av_log(h->avctx, AV_LOG_ERROR, "SEI type %d size %d truncated at %d\n", + type, 8*size, get_bits_left(&h->gb)); + return AVERROR_INVALIDDATA; + } + next = get_bits_count(&h->gb) + 8 * size; + + switch (type) { case SEI_TYPE_PIC_TIMING: // Picture timing SEI - if(decode_picture_timing(h) < 0) - return -1; + ret = decode_picture_timing(h); + if (ret < 0) + return ret; break; case SEI_TYPE_USER_DATA_ITU_T_T35: - if(decode_user_data_itu_t_t35(h, size) < 0) + if (decode_user_data_itu_t_t35(h, size) < 0) return -1; break; case SEI_TYPE_USER_DATA_UNREGISTERED: - if(decode_unregistered_user_data(h, size) < 0) - return -1; + ret = decode_unregistered_user_data(h, size); + if (ret < 0) + return ret; break; case SEI_TYPE_RECOVERY_POINT: - if(decode_recovery_point(h) < 0) - return -1; + ret = decode_recovery_point(h); + if (ret < 0) + return ret; break; case SEI_BUFFERING_PERIOD: - if(decode_buffering_period(h) < 0) - return -1; + ret = decode_buffering_period(h); + if (ret < 0) + return ret; + break; + case SEI_TYPE_FRAME_PACKING: + ret = decode_frame_packing_arrangement(h); + if (ret < 0) + return ret; break; default: - skip_bits(&h->gb, 8*size); + av_log(h->avctx, AV_LOG_DEBUG, "unknown SEI type %d\n", type); } + skip_bits_long(&h->gb, next - get_bits_count(&h->gb)); - //FIXME check bits here + // FIXME check bits here align_get_bits(&h->gb); } return 0; } + +const char* ff_h264_sei_stereo_mode(H264Context *h) +{ + if (h->sei_fpa.frame_packing_arrangement_cancel_flag == 0) { + switch (h->sei_fpa.frame_packing_arrangement_type) { + case SEI_FPA_TYPE_CHECKERBOARD: + if (h->sei_fpa.content_interpretation_type == 2) + return "checkerboard_rl"; + else + return "checkerboard_lr"; + case SEI_FPA_TYPE_INTERLEAVE_COLUMN: + if (h->sei_fpa.content_interpretation_type == 2) + return "col_interleaved_rl"; + else + return "col_interleaved_lr"; + case SEI_FPA_TYPE_INTERLEAVE_ROW: + if (h->sei_fpa.content_interpretation_type == 2) + return "row_interleaved_rl"; + else + return "row_interleaved_lr"; + case SEI_FPA_TYPE_SIDE_BY_SIDE: + if (h->sei_fpa.content_interpretation_type == 2) + return "right_left"; + else + return "left_right"; + case SEI_FPA_TYPE_TOP_BOTTOM: + if (h->sei_fpa.content_interpretation_type == 2) + return "bottom_top"; + else + return "top_bottom"; + case SEI_FPA_TYPE_INTERLEAVE_TEMPORAL: + if (h->sei_fpa.content_interpretation_type == 2) + return "block_rl"; + else + return "block_lr"; + case SEI_FPA_TYPE_2D: + default: + return "mono"; + } + } else if (h->sei_fpa.frame_packing_arrangement_cancel_flag == 1) { + return "mono"; + } else { + return NULL; + } +} |