48 p->
buf[0] ==
'F' && p->
buf[1] ==
'R' && p->
buf[2] ==
'M' &&
94 for (i = 3; i + 1 <= pkt->
size; i += 4)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int frm_read_header(AVFormatContext *avctx)
packed RGB 8:8:8, 24bpp, RGBRGB...
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
static int frm_read_packet(AVFormatContext *avctx, AVPacket *pkt)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
This struct describes the properties of an encoded stream.
static const PixelFormatTag frm_pix_fmt_tags[]
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
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.
#define AVERROR_EOF
End of file.
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters...
static int frm_read_probe(const AVProbeData *p)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
enum AVMediaType codec_type
General type of the encoded data.
int avio_r8(AVIOContext *s)
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc)
AVIOContext * pb
I/O context.
AVInputFormat ff_frm_demuxer
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
This structure contains the data a format has to probe a file.
unsigned int avio_rl16(AVIOContext *s)
#define AV_PIX_FMT_RGB555
void * priv_data
Format private data.
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
This structure stores compressed data.