40 if (avctx->
width & 7) {
52 int buf_size = avpkt->
size;
55 const uint8_t *bytestream = buf;
68 for (i = 0; i < 16; i++) {
69 a->
delta[i] = *bytestream++;
74 for (y = 0; y < avctx->
height; y++) {
82 if (buf_size < 4 + avctx->
width)
85 for (i = 0; i < 4; i++)
86 a->
offset[i] = *bytestream++;
89 offset = a->
offset[0] - a->
delta[bytestream[2] & 0xF];
90 for (x = 0; x < avctx->
width; x += 4) {
91 luma[0] = offset += a->
delta[bytestream[2] & 0xF];
92 luma[1] = offset += a->
delta[bytestream[2] >> 4];
93 luma[2] = offset += a->
delta[bytestream[0] & 0xF];
94 luma[3] = offset += a->
delta[bytestream[0] >> 4];
97 *cb++ = bytestream[3];
98 *cr++ = bytestream[1];
104 if (buf_size < avctx->
width / 2)
107 offset = a->
offset[y & 3] - a->
delta[bytestream[2] & 0xF];
109 for (x = 0; x < avctx->
width; x += 8) {
110 luma[0] = offset += a->
delta[bytestream[2] & 0xF];
111 luma[1] = offset += a->
delta[bytestream[2] >> 4];
112 luma[2] = offset += a->
delta[bytestream[3] & 0xF];
113 luma[3] = offset += a->
delta[bytestream[3] >> 4];
114 luma[4] = offset += a->
delta[bytestream[0] & 0xF];
115 luma[5] = offset += a->
delta[bytestream[0] >> 4];
116 luma[6] = offset += a->
delta[bytestream[1] & 0xF];
117 luma[7] = offset += a->
delta[bytestream[1] >> 4];
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static av_cold int vcr1_decode_init(AVCodecContext *avctx)
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
const char * name
Name of the codec implementation.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
#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. ...
Libavcodec external API header.
common internal API header
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
common internal api header.
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
static av_cold int init(AVCodecParserContext *s)
static int vcr1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int key_frame
1 -> keyframe, 0-> not
This structure stores compressed data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.