36 #define MAX_PAGE_SIZE 65025 77 #define OFFSET(x) offsetof(OGGContext, x) 78 #define PARAM AV_OPT_FLAG_ENCODING_PARAM 81 {
"serial_offset",
"serial number offset",
83 {
"pagesize",
"preferred page size in bytes (deprecated)",
85 {
"page_duration",
"preferred page duration, in microseconds",
90 #define OGG_CLASS(flavor)\ 91 static const AVClass flavor ## _muxer_class = {\ 92 .class_name = #flavor " muxer",\ 93 .item_name = av_default_item_name,\ 95 .version = LIBAVUTIL_VERSION_INT,\ 148 return (granule>>oggstream->
kfgshift) +
149 (granule & ((1<<oggstream->
kfgshift)-1));
158 int64_t next_granule, cur_granule;
167 return next_granule > cur_granule;
210 int total_segments = size / 255 + 1;
224 if (!header && oggstream->
page.
size > 0 &&
229 for (i = 0; i < total_segments; ) {
240 len =
FFMIN(size, segments*255);
242 memcpy(page->
data+page->
size, p, len);
248 if (i == total_segments)
291 bytestream_put_byte(&p, 1);
312 bytestream_put_byte(&p, 0x7F);
314 bytestream_put_byte(&p, 1);
315 bytestream_put_byte(&p, 0);
316 bytestream_put_be16(&p, 1);
318 bytestream_put_byte(&p, 0x00);
319 bytestream_put_be24(&p, 34);
327 bytestream_put_byte(&p, 0x84);
328 bytestream_put_be24(&p, oggstream->
header_len[1] - 4);
333 #define SPEEX_HEADER_SIZE 80 362 #define OPUS_HEADER_SIZE 19 405 flush == 1 && oggstream->
page_count == 1 ? 4 : 0);
454 for (j = 0; j < i; j++) {
511 bytestream_put_byte(&p, header_type);
535 for (i = 1; i < 3; i++) {
564 if (pframe_count >= (1<<oggstream->
kfgshift)) {
641 .mime_type =
"application/ogg",
642 .extensions =
"ogg,ogv",
651 .priv_class = &ogg_muxer_class,
660 .mime_type =
"audio/ogg",
669 .priv_class = &oga_muxer_class,
678 .mime_type =
"audio/ogg",
686 .priv_class = &spx_muxer_class,
690 #if CONFIG_OPUS_MUXER 695 .mime_type =
"audio/ogg",
696 .extensions =
"opus",
703 .priv_class = &opus_muxer_class,
static int ogg_write_header(AVFormatContext *s)
int64_t last_granule
last packet granule
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
#define AV_LOG_WARNING
Something somehow does not look correct.
unsigned page_count
number of page buffered
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
uint8_t data[MAX_PAGE_SIZE]
#define OGG_CLASS(flavor)
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
This struct describes the properties of an encoded stream.
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
void avio_wl32(AVIOContext *s, unsigned int val)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
AVStream ** streams
A list of all streams in the file.
static int ogg_build_speex_headers(AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
int initial_padding
Audio only.
int flags
Flags modifying the (de)muxer behaviour.
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)
static const AVOption options[]
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static int ogg_build_flac_headers(AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
void avio_wl64(AVIOContext *s, uint64_t val)
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVDictionary * metadata
Metadata that applies to the whole file.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
static int ogg_buffer_data(AVFormatContext *s, AVStream *st, uint8_t *data, unsigned size, int64_t granule, int header)
static int ogg_build_opus_headers(AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
FLAC (Free Lossless Audio Codec) decoder/demuxer common functions.
struct OGGPageList * next
int pref_size
preferred page size (0 => fill all segments)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
enum AVMediaType codec_type
General type of the encoded data.
static int ogg_reset_cur_page(OGGStreamContext *oggstream)
static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
int flags
A combination of AV_PKT_FLAG values.
int extradata_size
Size of the extradata content in bytes.
static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
static int ogg_write_trailer(AVFormatContext *s)
void ffio_init_checksum(AVIOContext *s, unsigned long(*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum)
int void avio_flush(AVIOContext *s)
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len)
static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
#define FLAC_STREAMINFO_SIZE
#define CONFIG_LIBVORBIS_ENCODER
static volatile int checksum
#define SPEEX_HEADER_SIZE
static uint8_t * ogg_write_vorbiscomment(int offset, int bitexact, int *header_len, AVDictionary **m, int framing_bit)
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
AVIOContext * pb
I/O context.
void avio_w8(AVIOContext *s, int b)
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
Describe the class of an AVClass context structure.
rational number numerator/denominator
unsigned long ffio_get_checksum(AVIOContext *s)
int avpriv_split_xiph_headers(uint8_t *extradata, int extradata_size, int first_header_size, uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
unsigned serial_num
serial number
static int64_t pts
Global timestamp for the audio frames.
int sample_rate
Audio only.
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
int kfgshift
for theora granule
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
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)
uint32_t av_get_random_seed(void)
Get random data.
AVCodecParameters * codecpar
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
int64_t pref_duration
preferred page duration (0 => fill all segments)
static void ogg_write_pages(AVFormatContext *s, int flush)
This structure stores compressed data.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define AV_NOPTS_VALUE
Undefined timestamp value.