97 return (block_align - 4 * channels) * 8 / (4 *
channels) + 1;
99 return (block_align - 7 * channels) * 2 / channels + 2;
112 int64_t chunk_size = 0;
137 av_log(s,
AV_LOG_ERROR,
"Muxing variable packet size not supported on non seekable output\n");
190 chunk_size += strlen(t->
key) + strlen(t->
value) + 2;
217 if (alloc_size < 0) {
228 for (i = 4; i > 0; i--) {
229 unsigned top = pkt->
size >> i * 7;
269 .mime_type =
"audio/x-caf",
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
void avio_wb64(AVIOContext *s, uint64_t val)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
This struct describes the properties of an encoded stream.
int frame_size
Audio only.
void avio_wl32(AVIOContext *s, unsigned int val)
AVStream ** streams
A list of all streams in the file.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
uint64_t channel_layout
Audio only.
AVCodecID
Identify the syntax and semantics of the bitstream.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVDictionary * metadata
Metadata that applies to the whole file.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
static int caf_write_header(AVFormatContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
preferred ID for decoding MPEG audio layer 1, 2 or 3
int extradata_size
Size of the extradata content in bytes.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int block_align
Audio only.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
AVOutputFormat ff_caf_muxer
static int write_trailer(AVFormatContext *s1)
static uint32_t samples_per_packet(enum AVCodecID codec_id, int channels, int block_align)
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
static uint32_t codec_flags(enum AVCodecID codec_id)
int avio_put_str(AVIOContext *s, const char *str)
Write a NULL-terminated string.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
AVIOContext * pb
I/O context.
void avio_w8(AVIOContext *s, int b)
static int caf_write_packet(AVFormatContext *s, AVPacket *pkt)
void avio_wb16(AVIOContext *s, unsigned int val)
static int caf_write_trailer(AVFormatContext *s)
int sample_rate
Audio only.
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
as in Berlin toast format
void * priv_data
Format private data.
static void write_header(FFV1Context *f)
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
void avio_wb32(AVIOContext *s, unsigned int val)
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
const AVCodecTag ff_codec_caf_tags[]
Known codec tags for CAF.
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
This structure stores compressed data.