54 avio_w8(pb, last_block ? 0x81 : 0x01);
61 int last_block,
int bitexact)
69 if (
len >= ((1<<24) - 4))
72 avio_w8(pb, last_block ? 0x84 : 0x04);
86 const char *mimetype =
NULL, *
desc =
"";
88 int i, mimelen, desclen,
type = 0, blocklen;
102 "write an attached picture.\n", st->
index);
105 mimelen = strlen(mimetype);
116 if ((
c->attached_types & (1 <<
type)) & 0x6) {
128 c->attached_types |= (1 <<
type);
133 desclen = strlen(
desc);
135 blocklen = 4 + 4 + mimelen + 4 + desclen + 4 + 4 + 4 + 4 + 4 +
pkt->
size;
136 if (blocklen >= 1<<24) {
167 int i, ret, padding =
s->metadata_header_padding;
174 for (
i = 0;
i <
s->nb_streams;
i++) {
206 c->audio_stream_idx = -1;
207 for (
i = 0;
i <
s->nb_streams;
i++) {
212 "audio stream is required.\n");
215 par =
s->streams[
i]->codecpar;
216 c->audio_stream_idx =
i;
224 }
else if (!
c->write_header) {
234 if (
c->audio_stream_idx < 0) {
248 "already present, this muxer will not overwrite it.\n");
252 av_dict_set(&
s->metadata,
"WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
265 if (!
c->write_header)
273 if (!
c->waiting_pics)
290 c->updated_streaminfo = 1;
323 if (
c->waiting_pics) {
325 "attached pictures.\n");
329 if (!
c->write_header || !
c->updated_streaminfo)
350 for (
unsigned i = 0;
i <
s->nb_streams;
i++)
360 if (
c->waiting_pics) {
376 if (!
c->waiting_pics ||
394 if (!
c->waiting_pics &&
418 .mime_type =
"audio/x-flac",
419 .extensions =
"flac",
#define AV_EF_EXPLODE
abort decoding on minor error detection
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
void avio_w8(AVIOContext *s, int b)
void avio_wb32(AVIOContext *s, unsigned int val)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
void avio_wb24(AVIOContext *s, unsigned int val)
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
void ffio_fill(AVIOContext *s, int b, int count)
void avpriv_packet_list_free(PacketList **pkt_buf, PacketList **pkt_buf_end)
Wipe the list and unref all the packets in it.
int avpriv_packet_list_get(PacketList **pkt_buffer, PacketList **pkt_buffer_end, AVPacket *pkt)
Remove the oldest AVPacket in the list and return it.
int avpriv_packet_list_put(PacketList **packet_buffer, PacketList **plast_pktl, AVPacket *pkt, int(*copy)(AVPacket *dst, const AVPacket *src), int flags)
Append an AVPacket to the list.
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *size)
static av_cold int init(AVCodecContext *avctx)
#define flags(name, subs,...)
audio channel layout utility functions
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
static void write_header(FFV1Context *f)
FLAC (Free Lossless Audio Codec) decoder/demuxer common functions.
#define FLAC_STREAMINFO_SIZE
int ff_flac_write_header(AVIOContext *pb, const uint8_t *extradata, int extradata_size, int last_block)
int ff_flac_is_native_layout(uint64_t channel_layout)
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
AVPacket * av_packet_clone(const AVPacket *src)
Create a new packet that references the same data as src.
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
const char * av_default_item_name(void *ptr)
Return the context name.
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
#define LIBAVUTIL_VERSION_INT
const char *const ff_id3v2_picture_types[21]
const CodecMime ff_id3v2_mime_tags[]
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
#define FF_ARRAY_ELEMS(a)
Describe the class of an AVClass context structure.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
This struct describes the properties of an encoded stream.
int extradata_size
Size of the extradata content in bytes.
uint64_t channel_layout
Audio only.
enum AVMediaType codec_type
General type of the encoded data.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
This structure stores compressed data.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int64_t nb_frames
number of frames in this stream if known or 0
int index
stream index in AVFormatContext
int disposition
AV_DISPOSITION_* bit field.
uint8_t streaminfo[FLAC_STREAMINFO_SIZE]
static int write_trailer(AVFormatContext *s1)