35 if (avctx->
width & 1) {
57 if (bytestream_get_le32(&buf) !=
MKTAG(
'F',
'R',
'W',
'1')) {
68 for (field = 0; field < 2; field++) {
70 int field_h = (avctx->
height + !field) >> 1;
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));
85 if (field ^
s->change_field_order) {
87 }
else if (
s->change_field_order) {
90 for (
i = 0;
i < field_h;
i++) {
91 if (
s->change_field_order && field &&
i == field_h - 1)
93 memcpy(dst, buf, avctx->
width * 2);
94 buf += avctx->
width * 2;
97 buf += field_size - min_field_size;
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
#define MKTAG(a, b, c, d)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static av_cold int decode_init(AVCodecContext *avctx)
static const AVClass frwu_class
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static const AVOption frwu_options[]
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
const char * av_default_item_name(void *ptr)
Return the context name.
@ AV_PICTURE_TYPE_I
Intra.
#define LIBAVUTIL_VERSION_INT
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
#define AV_OPT_FLAG_VIDEO_PARAM
@ AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Describe the class of an AVClass context structure.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int key_frame
1 -> keyframe, 0-> not
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
enum AVPictureType pict_type
Picture type of the frame.
This structure stores compressed data.