31 #define MAX_EXTRADATA_SIZE 1024 44 {
"smc-interval",
"StreamMuxConfig interval.",
106 int words = length >> 4;
107 int bits = length & 15;
109 for (i = 0; i < words; i++)
168 uint8_t loas_header[] =
"\x56\xe0\x00";
174 if(pkt->
size > 2 && pkt->
data[0] == 0x56 && (pkt->
data[1] >> 4) == 0xe &&
179 int side_data_size,
ret;
183 if (side_data_size) {
189 memcpy(par->
extradata, side_data, side_data_size);
195 if (pkt->
size > 0x1fff)
203 for (i = 0; i <= pkt->
size-255; i+=255)
211 if (pkt->
size && (pkt->
data[0] & 0xe1) == 0x81) {
232 loas_header[1] |= (len >> 8) & 0x1f;
233 loas_header[2] |= len & 0xff;
261 .mime_type =
"audio/MP4A-LATM",
262 .extensions =
"latm,loas",
268 .priv_class = &latm_muxer_class,
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static const AVOption options[]
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
#define LIBAVUTIL_VERSION_INT
static void skip_bits_long(GetBitContext *s, int n)
Skips the specified number of bits.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
const char * av_default_item_name(void *ptr)
Return the context name.
static const AVClass latm_muxer_class
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_RB16
This struct describes the properties of an encoded stream.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
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. ...
AVStream ** streams
A list of all streams in the file.
bitstream reader API header.
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static int put_bits_count(PutBitContext *s)
int extradata_size
Size of the extradata content in bytes.
static int latm_decode_extradata(AVFormatContext *s, uint8_t *buf, int size)
static int latm_write_packet(AVFormatContext *s, AVPacket *pkt)
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Libavcodec external API header.
AVIOContext * pb
I/O context.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
#define MAX_EXTRADATA_SIZE
static int latm_write_header(AVFormatContext *s)
Describe the class of an AVClass context structure.
static int ff_copy_pce_data(PutBitContext *pb, GetBitContext *gb)
#define flags(name, subs,...)
Y Spectral Band Replication.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static void copy_bits(PutBitContext *pb, const uint8_t *src, int length)
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
AVOutputFormat ff_latm_muxer
static void latm_write_frame_header(AVFormatContext *s, PutBitContext *bs)
void * priv_data
Format private data.
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
static void write_header(FFV1Context *f)
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
uint8_t buffer[0x1fff+MAX_EXTRADATA_SIZE+1024]
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.
static int latm_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)