52 if (!memcmp(p->
buf,
"NuppelVideo", 12))
54 if (!memcmp(p->
buf,
"MythTVVideo", 12))
60 #define PKTSIZE(s) (s & 0xffffff) 85 if (vst && subtype ==
'R') {
162 is_mythtv = !memcmp(id_string,
"MythTVVideo", 12);
172 if (aspect > 0.9999 && aspect < 1.0001)
209 #if FF_API_R_FRAME_RATE 221 ctx->
a_id = ast->index;
225 ast->codecpar->channels = 2;
227 ast->codecpar->sample_rate = 44100;
228 ast->codecpar->bit_rate = 2 * 2 * 44100 * 8;
229 ast->codecpar->block_align = 2 * 2;
230 ast->codecpar->bits_per_coded_sample = 16;
259 return ret < 0 ? ret :
AVERROR(EIO);
284 memcpy(pkt->
data, hdr, copyhdrsize);
326 tag = (tag << 8) |
avio_r8(pb);
327 if (tag ==
MKBETAG(
'R',
'T',
'j',
'j') &&
340 int64_t *ppos, int64_t pos_limit)
372 if (stream_index == idx) {
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
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.
#define AV_LOG_WARNING
Something somehow does not look correct.
int64_t pos
byte position in stream, -1 if unknown
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
int index
stream index in AVFormatContext
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_CH_LAYOUT_STEREO
static av_always_inline double av_int2double(uint64_t i)
Reinterpret a 64-bit integer as a double.
unsigned int avio_rb32(AVIOContext *s)
enum AVStreamParseType need_parsing
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVStream ** streams
A list of all streams in the file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
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.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
unsigned int avio_rl32(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
preferred ID for decoding MPEG audio layer 1, 2 or 3
enum AVMediaType codec_type
General type of the encoded data.
AVRational avg_frame_rate
Average framerate.
int flags
A combination of AV_PKT_FLAG values.
int avio_r8(AVIOContext *s)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
audio channel layout utility functions
const AVCodecTag ff_codec_bmp_tags[]
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
#define AV_EF_EXPLODE
abort decoding on minor error detection
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
AVIOContext * pb
I/O context.
This structure contains the data a format has to probe a file.
#define flags(name, subs,...)
AVRational av_d2q(double d, int max)
Convert a double precision floating point number to a rational.
int sample_rate
Audio only.
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
int error_recognition
Error recognition; higher values will detect more errors but may misdetect some more or less valid pa...
#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.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
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
#define MKTAG(a, b, c, d)
AVRational r_frame_rate
Real base framerate of the stream.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
uint64_t avio_rl64(AVIOContext *s)
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.