diff --git a/libavcodec/hevc_sei.c b/libavcodec/hevc_sei.c index 173689198c..a4ec65dc1a 100644 --- a/libavcodec/hevc_sei.c +++ b/libavcodec/hevc_sei.c @@ -306,6 +306,53 @@ static int decode_nal_sei_alternative_transfer(HEVCSEIAlternativeTransfer *s, Ge return 0; } +static int decode_nal_sei_timecode(HEVCSEITimeCode *s, GetBitContext *gb) +{ + s->num_clock_ts = get_bits(gb, 2); + + for (int i = 0; i < s->num_clock_ts; i++) { + s->clock_timestamp_flag[i] = get_bits(gb, 1); + + if (s->clock_timestamp_flag[i]) { + s->units_field_based_flag[i] = get_bits(gb, 1); + s->counting_type[i] = get_bits(gb, 5); + s->full_timestamp_flag[i] = get_bits(gb, 1); + s->discontinuity_flag[i] = get_bits(gb, 1); + s->cnt_dropped_flag[i] = get_bits(gb, 1); + + s->n_frames[i] = get_bits(gb, 9); + + if (s->full_timestamp_flag[i]) { + s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59); + s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59); + s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23); + } else { + s->seconds_flag[i] = get_bits(gb, 1); + if (s->seconds_flag[i]) { + s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59); + s->minutes_flag[i] = get_bits(gb, 1); + if (s->minutes_flag[i]) { + s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59); + s->hours_flag[i] = get_bits(gb, 1); + if (s->hours_flag[i]) { + s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23); + } + } + } + } + + s->time_offset_length[i] = get_bits(gb, 5); + if (s->time_offset_length[i] > 0) { + s->time_offset_value[i] = get_bits(gb, s->time_offset_length[i]); + } + } + } + + s->present = 1; + return 0; +} + + static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, int type, int size) { @@ -330,6 +377,8 @@ static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s, return decode_nal_sei_user_data_unregistered(&s->unregistered, gb, size); case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS: return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb); + case HEVC_SEI_TYPE_TIME_CODE: + return decode_nal_sei_timecode(&s->timecode, gb); default: av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type); skip_bits_long(gb, 8 * size); diff --git a/libavcodec/hevc_sei.h b/libavcodec/hevc_sei.h index 3618d162df..5ee7a4796d 100644 --- a/libavcodec/hevc_sei.h +++ b/libavcodec/hevc_sei.h @@ -115,6 +115,26 @@ typedef struct HEVCSEIAlternativeTransfer { int preferred_transfer_characteristics; } HEVCSEIAlternativeTransfer; +typedef struct HEVCSEITimeCode { + int present; + uint8_t num_clock_ts; + uint8_t clock_timestamp_flag[3]; + uint8_t units_field_based_flag[3]; + uint8_t counting_type[3]; + uint8_t full_timestamp_flag[3]; + uint8_t discontinuity_flag[3]; + uint8_t cnt_dropped_flag[3]; + uint16_t n_frames[3]; + uint8_t seconds_value[3]; + uint8_t minutes_value[3]; + uint8_t hours_value[3]; + uint8_t seconds_flag[3]; + uint8_t minutes_flag[3]; + uint8_t hours_flag[3]; + uint8_t time_offset_length[3]; + int32_t time_offset_value[3]; +} HEVCSEITimeCode; + typedef struct HEVCSEI { HEVCSEIPictureHash picture_hash; HEVCSEIFramePacking frame_packing; @@ -126,6 +146,7 @@ typedef struct HEVCSEI { HEVCSEIContentLight content_light; int active_seq_parameter_set_id; HEVCSEIAlternativeTransfer alternative_transfer; + HEVCSEITimeCode timecode; } HEVCSEI; struct HEVCParamSets;