249 for (i = 0; i < 3; i++) {
266 if (code >= 0x400 && code != 0x7fff) {
267 for (i = 2; i >= 0; i--) {
268 to[
i] = 0x60 + (code & 0x1f);
288 len = (len << 7) | (c & 0x7f);
335 int object_type_id =
avio_r8(pb);
342 #if FF_API_LAVF_AVCTX 345 st->codec->rc_max_rate = v;
360 if (object_type_id == 0x69 || object_type_id == 0x6b)
362 if (!len || (uint64_t)len > (1<<30))
427 for (layouts = mov_channel_layout; layouts->
channel_layout; layouts++)
int ff_mov_iso639_to_lang(const char lang[4], int mp4)
static const AVCodecTag mp4_audio_types[]
#define AV_CH_LAYOUT_7POINT1
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
#define AV_CH_LAYOUT_SURROUND
static const MovChannelLayout mov_channel_layout[]
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
#define AV_CH_LAYOUT_4POINT0
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define FF_ARRAY_ELEMS(a)
#define AV_CH_LAYOUT_STEREO
unsigned int avio_rb16(AVIOContext *s)
#define AV_CH_LAYOUT_5POINT0
mpeg audio layer common tables.
static const char mov_mdhd_language_map[][4]
int avpriv_mpeg4audio_get_config2(MPEG4AudioConfig *c, const uint8_t *buf, int size, int sync_extension, void *logctx)
Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration. ...
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
unsigned int avio_rb32(AVIOContext *s)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
const uint16_t avpriv_mpa_freq_tab[3]
#define AV_CH_LOW_FREQUENCY
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AV_CH_LAYOUT_5POINT1
#define fc(width, name, range_min, range_max)
const AVCodecTag ff_codec_movdata_tags[]
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
AVCodecID
Identify the syntax and semantics of the bitstream.
int ff_mp4_read_descr_len(AVIOContext *pb)
#define MP4DecSpecificDescrTag
preferred ID for decoding MPEG audio layer 1, 2 or 3
#define AV_CH_LAYOUT_QUAD
const AVCodecTag ff_mp4_obj_type[]
const AVCodecTag ff_codec_movsubtitle_tags[]
int extradata_size
Size of the extradata content in bytes.
int avio_r8(AVIOContext *s)
unsigned int avio_rb24(AVIOContext *s)
#define AV_CH_LAYOUT_STEREO_DOWNMIX
#define AV_CH_LAYOUT_5POINT1_BACK
preferred ID for MPEG-1/2 video decoding
int ff_mov_lang_to_iso639(unsigned code, char to[4])
FAKE codec to indicate a MPEG-4 Systems stream (only used by libavformat)
#define AV_CH_LAYOUT_5POINT0_BACK
enum MovChannelLayoutTag * layouts
#define flags(name, subs,...)
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
#define AV_CH_LAYOUT_7POINT1_WIDE
int sample_rate
Audio only.
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
#define FF_DISABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
void avio_wb32(AVIOContext *s, unsigned int val)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)