47 #define AUDIO_FORMAT_SIGNED 401 62 if (size < 0 || size == INT_MAX)
80 v = strtol(s,
NULL, 10);
124 if (!strcmp(name,
"__NUM_I_TRACKS")) {
126 }
else if (!strcmp(name,
"__NUM_A_TRACKS")) {
128 }
else if (!strcmp(name,
"COMMENT") || !strcmp(name,
"TITLE")) {
130 }
else if (!strcmp(name,
"LOOP_MODE") || !strcmp(name,
"NUM_LOOPS") ||
131 !strcmp(name,
"OPTIMIZED")) {
148 if (!strcmp(name,
"__DIR_COUNT")) {
150 }
else if (!strcmp(name,
"AUDIO_FORMAT")) {
152 }
else if (!strcmp(name,
"COMPRESSION")) {
154 }
else if (!strcmp(name,
"DEFAULT_VOL")) {
156 }
else if (!strcmp(name,
"NUM_CHANNELS")) {
158 }
else if (!strcmp(name,
"SAMPLE_RATE")) {
161 }
else if (!strcmp(name,
"SAMPLE_WIDTH")) {
177 if (!strcmp(name,
"__DIR_COUNT")) {
179 }
else if (!strcmp(name,
"COMPRESSION")) {
183 if (!strcmp(str,
"1")) {
185 }
else if (!strcmp(str,
"2")) {
188 }
else if (!strcmp(str,
"3")) {
190 }
else if (!strcmp(str,
"10")) {
192 }
else if (!strcmp(str,
"MVC2")) {
198 }
else if (!strcmp(name,
"FPS")) {
202 }
else if (!strcmp(name,
"HEIGHT")) {
204 }
else if (!strcmp(name,
"PIXEL_ASPECT")) {
209 }
else if (!strcmp(name,
"WIDTH")) {
211 }
else if (!strcmp(name,
"ORIENTATION")) {
218 }
else if (!strcmp(name,
"Q_SPATIAL") || !strcmp(name,
"Q_TEMPORAL")) {
220 }
else if (!strcmp(name,
"INTERLACING") || !strcmp(name,
"PACKING")) {
239 for (i = 0; i <
count; i++) {
247 name[
sizeof(
name) - 1] = 0;
253 if (
parse(avctx, st, name, size) < 0) {
263 uint64_t timestamp = 0;
305 vst->avg_frame_rate =
av_inv_q(vst->time_base);
320 vst->codecpar->codec_tag = 0;
349 for (i = 0; i < vst->nb_frames; i++) {
360 }
else if (!version &&
avio_rb16(pb) == 3) {
388 "Audio compression %i (format %i, sr %i)",
434 if (frame < st->internal->nb_index_entries) {
437 if (index->
pos > pos)
439 else if (index->
pos < pos) {
473 int64_t timestamp,
int flags)
490 mv->
frame[i] = frame;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int mv_read_header(AVFormatContext *avctx)
static int parse_video_var(AVFormatContext *avctx, AVStream *st, const char *name, int size)
Parse video variable.
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
static char * var_read_string(AVIOContext *pb, int size)
int stream_index
current stream index
#define avpriv_request_sample(...)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
static AVRational var_read_float(AVIOContext *pb, int size)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_CH_LAYOUT_STEREO
unsigned int avio_rb16(AVIOContext *s)
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
static int mv_read_packet(AVFormatContext *avctx, AVPacket *pkt)
static void var_read_metadata(AVFormatContext *avctx, const char *tag, int size)
static int parse(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size)
unsigned int avio_rb32(AVIOContext *s)
GLsizei GLboolean const GLfloat * value
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
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_RB32
AVStream ** streams
A list of all streams in the file.
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
#define AVERROR_EOF
End of file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVDictionary * metadata
Metadata that applies to the whole file.
int eof_count
number of streams that have finished
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
static int mv_read_seek(AVFormatContext *avctx, int stream_index, int64_t timestamp, int flags)
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
#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.
AVRational avg_frame_rate
Average framerate.
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
int flags
A combination of AV_PKT_FLAG values.
int extradata_size
Size of the extradata content in bytes.
static int read_table(AVFormatContext *avctx, AVStream *st, int(*parse)(AVFormatContext *avctx, AVStream *st, const char *name, int size))
static void read_index(AVIOContext *pb, AVStream *st)
int frame[2]
frame nb for current stream
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
audio channel layout utility functions
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
#define AUDIO_FORMAT_SIGNED
static int parse_audio_var(AVFormatContext *avctx, AVStream *st, const char *name, int size)
Parse audio variable.
int acompression
compression level for audio stream
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
double av_strtod(const char *numstr, char **tail)
Parse the string in numstr and return its value as a double.
static const int8_t mv[256][2]
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
char * av_strdup(const char *s)
Duplicate a string.
AVStreamInternal * internal
An opaque field for libavformat internal usage.
AVIOContext * pb
I/O context.
static int mv_probe(const AVProbeData *p)
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Rational number (pair of numerator and denominator).
This structure contains the data a format has to probe a file.
AVInputFormat ff_mv_demuxer
static int var_read_int(AVIOContext *pb, int size)
#define flags(name, subs,...)
static int parse_global_var(AVFormatContext *avctx, AVStream *st, const char *name, int size)
Parse global variable.
AVRational av_d2q(double d, int max)
Convert a double precision floating point number to a rational.
int64_t duration
Decoding: duration of the stream, in stream time base.
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
int sample_rate
Audio only.
Utilties for rational number calculation.
int64_t nb_frames
number of frames in this stream if known or 0
#define MKBETAG(a, b, c, d)
void * priv_data
Format private data.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
static int set_channels(AVFormatContext *avctx, AVStream *st, int channels)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int avio_get_str(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a string from pb into buf.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
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
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
simple arithmetic expression evaluator