93 int audio_size = c->
packet[1] * 65 + 1;
94 if (audio_size >= c->
size) {
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int bmv_read_close(AVFormatContext *s)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
static int bmv_read_header(AVFormatContext *s)
#define AV_CH_LAYOUT_STEREO
8 bits with AV_PIX_FMT_RGB32 palette
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_EOF
End of file.
static av_cold int read_close(AVFormatContext *ctx)
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
AVInputFormat ff_bmv_demuxer
#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.
int avio_r8(AVIOContext *s)
audio channel layout utility functions
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
AVIOContext * pb
I/O context.
int sample_rate
Audio only.
int eof_reached
true if was unable to read due to error or eof
void * priv_data
Format private data.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
unsigned int avio_rl24(AVIOContext *s)
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 bmv_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...