21 #ifndef AVCODEC_H2645_PARSE_H 22 #define AVCODEC_H2645_PARSE_H 30 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes 105 void *logctx,
int is_nalff,
int nal_length_size,
114 int buf_size,
int *buf_index,
void *logctx)
118 if (*buf_index >= buf_size - nal_length_size) {
123 for (i = 0; i < nal_length_size; i++)
124 nalsize = ((
unsigned)nalsize << 8) | buf[(*buf_index)++];
125 if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
127 "Invalid NAL unit size (%d > %d).\n", nalsize, buf_size - *buf_index);
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int size_bits
Size, in bits, of just the data, excluding the stop bit and any trailing padding. ...
int ff_h2645_extract_rbsp(const uint8_t *src, int length, H2645RBSP *rbsp, H2645NAL *nal, int small_padding)
Extract the raw (unescaped) bitstream.
int skipped_bytes_pos_size
bitstream reader API header.
#define i(width, name, range_min, range_max)
AVCodecID
Identify the syntax and semantics of the bitstream.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void ff_h2645_packet_uninit(H2645Packet *pkt)
Free all the allocated memory in the packet.
static int get_nalsize(int nal_length_size, const uint8_t *buf, int buf_size, int *buf_index, void *logctx)
int ref_idc
H.264 only, nal_ref_idc.
Libavcodec external API header.
AVBufferRef * rbsp_buffer_ref
int rbsp_buffer_alloc_size
refcounted data buffer API
A reference to a data buffer.
int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t *buf, int length, void *logctx, int is_nalff, int nal_length_size, enum AVCodecID codec_id, int small_padding, int use_ref)
Split an input packet into NAL units.
int temporal_id
HEVC only, nuh_temporal_id_plus_1 - 1.
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