26 typedef struct voc_enc_context {
34 const int header_size = 26;
101 .mime_type =
"audio/x-voc",
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
void avio_wl16(AVIOContext *s, unsigned int val)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
static int voc_write_packet(AVFormatContext *s, AVPacket *pkt)
This struct describes the properties of an encoded stream.
void avio_wl32(AVIOContext *s, unsigned int val)
AVStream ** streams
A list of all streams in the file.
AVOutputFormat ff_voc_muxer
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
enum AVMediaType codec_type
General type of the encoded data.
static int voc_write_trailer(AVFormatContext *s)
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
static int write_trailer(AVFormatContext *s1)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
const AVCodecTag ff_voc_codec_tags[]
AVIOContext * pb
I/O context.
void avio_w8(AVIOContext *s, int b)
void avio_wl24(AVIOContext *s, unsigned int val)
const unsigned char ff_voc_magic[21]
int sample_rate
Audio only.
void * priv_data
Format private data.
static void write_header(FFV1Context *f)
int bits_per_coded_sample
The number of bits per sample in the codedwords.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
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
static int voc_write_header(AVFormatContext *s)
This structure stores compressed data.