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 192 #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 void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static av_cold int cyuv_decode_init(AVCodecContext *avctx)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
#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.
common internal API header
int width
picture width / height.
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Libavcodec external API header.
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.
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.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.