35 if (avctx->
width & 1) {
57 if (bytestream_get_le32(&buf) !=
MKTAG(
'F',
'R',
'W',
'1')) {
68 for (field = 0; field < 2; field++) {
71 int field_size, min_field_size = avctx->
width * 2 * field_h;
73 if (buf_end - buf < 8)
76 field_size = bytestream_get_le32(&buf);
77 if (field_size < min_field_size) {
78 av_log(avctx,
AV_LOG_ERROR,
"Field size %i is too small (required %i)\n", field_size, min_field_size);
81 if (buf_end - buf < field_size) {
82 av_log(avctx,
AV_LOG_ERROR,
"Packet is too small, need %i, have %i\n", field_size, (
int)(buf_end - buf));
90 for (i = 0; i < field_h; i++) {
93 memcpy(dst, buf, avctx->
width * 2);
94 buf += avctx->
width * 2;
97 buf += field_size - min_field_size;
127 .priv_class = &frwu_class,
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
#define LIBAVUTIL_VERSION_INT
static av_cold int init(AVCodecContext *avctx)
const char * av_default_item_name(void *ptr)
Return the context name.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static const AVClass frwu_class
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this field
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
const char * name
Name of the codec implementation.
static av_cold int decode_init(AVCodecContext *avctx)
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
static const AVOption frwu_options[]
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
#define AV_OPT_FLAG_VIDEO_PARAM
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Describe the class of an AVClass context structure.
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
int key_frame
1 -> keyframe, 0-> not
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)
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.