Go to the documentation of this file.
37 hash_type = bytestream2_get_byte(gb);
39 for (cIdx = 0; cIdx < 3; cIdx++) {
43 }
else if (hash_type == 1) {
45 }
else if (hash_type == 2) {
61 if (
sps->vui.frame_field_info_present_flag) {
64 if (pic_struct == 2 || pic_struct == 10 || pic_struct == 12) {
67 }
else if (pic_struct == 1 || pic_struct == 9 || pic_struct == 11) {
70 }
else if (pic_struct == 7) {
73 }
else if (pic_struct == 8) {
84 int num_sps_ids_minus1;
85 unsigned active_seq_parameter_set_id;
92 if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
99 av_log(logctx,
AV_LOG_ERROR,
"active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
102 s->active_seq_parameter_set_id = active_seq_parameter_set_id;
111 for (
int i = 0;
i <
s->num_clock_ts;
i++) {
114 if (
s->clock_timestamp_flag[
i]) {
115 s->units_field_based_flag[
i] =
get_bits(gb, 1);
123 if (
s->full_timestamp_flag[
i]) {
129 if (
s->seconds_flag[
i]) {
132 if (
s->minutes_flag[
i]) {
135 if (
s->hours_flag[
i]) {
143 if (
s->time_offset_length[
i] > 0) {
193 int payload_type = 0;
194 int payload_size = 0;
199 while (
byte == 0xFF) {
202 byte = bytestream2_get_byteu(gb);
203 payload_type +=
byte;
206 while (
byte == 0xFF) {
209 byte = bytestream2_get_byteu(gb);
210 payload_size +=
byte;
220 logctx,
s, ps, payload_type);
223 logctx,
s, payload_type);
static int get_bits_left(GetBitContext *gb)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
@ AV_PICTURE_STRUCTURE_UNKNOWN
unknown
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static av_always_inline void bytestream2_skipu(GetByteContext *g, unsigned int size)
static int decode_nal_sei_suffix(GetBitContext *gb, GetByteContext *gbyte, void *logctx, HEVCSEI *s, int type)
static int get_bits_count(const GetBitContext *s)
int ff_h2645_sei_message_decode(H2645SEI *h, enum SEIType type, enum AVCodecID codec_id, GetBitContext *gb, GetByteContext *gbyte, void *logctx)
Decode a single SEI message.
static int decode_nal_sei_message(GetByteContext *gb, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, int nal_unit_type)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
@ HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING
static int decode_nal_sei_timecode(HEVCSEITimeCode *s, GetBitContext *gb)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
const HEVCSPS * sps_list[HEVC_MAX_SPS_COUNT]
RefStruct references.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
HEVCNALUnitType
Table 7-1 – NAL unit type codes and NAL unit type classes in T-REC-H.265-201802.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static int decode_nal_sei_active_parameter_sets(HEVCSEI *s, GetBitContext *gb, void *logctx)
@ FF_H2645_SEI_MESSAGE_UNHANDLED
@ AV_PICTURE_STRUCTURE_BOTTOM_FIELD
coded as bottom field
@ AV_PICTURE_STRUCTURE_TOP_FIELD
coded as top field
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
static int decode_nal_sei_pic_timing(HEVCSEI *s, GetBitContext *gb, const HEVCParamSets *ps, void *logctx)
#define i(width, name, range_min, range_max)
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
@ HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetByteContext *gb)
@ SEI_TYPE_DECODED_PICTURE_HASH
static unsigned get_ue_golomb_long(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
static int decode_nal_sei_prefix(GetBitContext *gb, GetByteContext *gbyte, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, int type)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
@ SEI_TYPE_ACTIVE_PARAMETER_SETS
int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s, const HEVCParamSets *ps, enum HEVCNALUnitType type)