60 void *
data,
int *got_frame,
64 int buf_size = avpkt->
size;
68 unsigned char *y_plane;
69 unsigned char *u_plane;
70 unsigned char *v_plane;
76 const signed char *y_table = (
const signed char*)buf + 0;
77 const signed char *u_table = (
const signed char*)buf + 16;
78 const signed char *v_table = (
const signed char*)buf + 32;
80 unsigned char y_pred, u_pred, v_pred;
82 unsigned char cur_byte;
95 if (buf_size == 48 + s->
height * (s->
width * 3 / 4)) {
97 }
else if(buf_size == rawsize ) {
111 y_plane = frame->
data[0];
112 u_plane = frame->
data[1];
113 v_plane = frame->
data[2];
115 if (buf_size == rawsize) {
118 for (stream_ptr = 0; stream_ptr < rawsize; stream_ptr += linesize) {
120 memcpy(y_plane, buf+stream_ptr, linesize);
125 for (y_ptr = 0, u_ptr = 0, v_ptr = 0;
132 cur_byte = buf[stream_ptr++];
133 u_plane[u_ptr++] = u_pred = cur_byte & 0xF0;
134 y_plane[y_ptr++] = y_pred = (cur_byte & 0x0F) << 4;
136 cur_byte = buf[stream_ptr++];
137 v_plane[v_ptr++] = v_pred = cur_byte & 0xF0;
138 y_pred += y_table[cur_byte & 0x0F];
139 y_plane[y_ptr++] = y_pred;
141 cur_byte = buf[stream_ptr++];
142 y_pred += y_table[cur_byte & 0x0F];
143 y_plane[y_ptr++] = y_pred;
144 y_pred += y_table[(cur_byte & 0xF0) >> 4];
145 y_plane[y_ptr++] = y_pred;
148 pixel_groups = s->
width / 4 - 1;
149 while (pixel_groups--) {
151 cur_byte = buf[stream_ptr++];
152 u_pred += u_table[(cur_byte & 0xF0) >> 4];
153 u_plane[u_ptr++] = u_pred;
154 y_pred += y_table[cur_byte & 0x0F];
155 y_plane[y_ptr++] = y_pred;
157 cur_byte = buf[stream_ptr++];
158 v_pred += v_table[(cur_byte & 0xF0) >> 4];
159 v_plane[v_ptr++] = v_pred;
160 y_pred += y_table[cur_byte & 0x0F];
161 y_plane[y_ptr++] = y_pred;
163 cur_byte = buf[stream_ptr++];
164 y_pred += y_table[cur_byte & 0x0F];
165 y_plane[y_ptr++] = y_pred;
166 y_pred += y_table[(cur_byte & 0xF0) >> 4];
167 y_plane[y_ptr++] = y_pred;
178 #if CONFIG_AURA_DECODER
191 #if CONFIG_CYUV_DECODER
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
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_cold int cyuv_decode_init(AVCodecContext *avctx)
#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. ...
const char * name
Name of the codec implementation.
Libavcodec external API header.
common internal API header
int width
picture width / height.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
static int cyuv_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
This structure stores compressed data.