40 #define FPS_TAG MKTAG('F', 'P', 'S', 'x')
77 static int huff_cmp(
const void *va,
const void *vb){
78 const Node *a = va, *
b = vb;
79 return (a->
count - b->count)*256 + a->
sym - b->sym;
86 int h,
const uint8_t *src,
int size,
int Uoff,
94 for(i = 0; i < 256; i++)
95 nodes[i].count = bytestream_get_le32(&src);
106 for(j = 0; j < h; j++){
112 if(j) dst[i] += dst[i -
stride];
113 else if(Uoff) dst[i] += 0x80;
126 void *
data,
int *data_size,
129 const uint8_t *buf = avpkt->
data;
130 int buf_size = avpkt->
size;
135 unsigned int version,header_size;
137 const uint32_t *buf32;
138 uint32_t *luma1,*luma2,*cb,*cr;
140 int i, j, is_chroma, planes;
142 int prev_pic_bit, expected_size;
150 version = header & 0xff;
151 header_size = (header & (1<<30))? 8 : 4;
152 prev_pic_bit = header & (1
U << 31);
156 "This file is encoded with Fraps version %d. " \
157 "This codec can only decode versions <= 5.\n", version);
162 if (header_size == 8)
171 expected_size = header_size;
178 expected_size += avctx->
width * avctx->
height * 3 / 2;
179 if (buf_size != expected_size) {
181 "Invalid frame length %d (should be %d)\n",
182 buf_size, expected_size);
186 if (( (avctx->
width % 8) != 0) || ( (avctx->
height % 2) != 0 )) {
204 buf32=(
const uint32_t*)buf;
205 for(y=0; y<avctx->
height/2; y++){
210 for(x=0; x<avctx->
width; x+=8){
211 *(luma1++) = *(buf32++);
212 *(luma1++) = *(buf32++);
213 *(luma2++) = *(buf32++);
214 *(luma2++) = *(buf32++);
215 *(cr++) = *(buf32++);
216 *(cb++) = *(buf32++);
226 if (buf_size != expected_size) {
228 "Invalid frame length %d (should be %d)\n",
229 buf_size, expected_size);
245 for(y=0; y<avctx->
height; y++)
247 &buf[y*avctx->
width*3],
279 for(i = 0; i < planes; i++) {
280 offs[i] =
AV_RL32(buf + 4 + i * 4);
281 if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) {
286 offs[planes] = buf_size;
287 for(i = 0; i < planes; i++){
291 avctx->
height >> is_chroma, buf + offs[i], offs[i + 1] - offs[i], is_chroma, 1) < 0) {
321 for(i = 0; i < planes; i++) {
322 offs[i] =
AV_RL32(buf + 4 + i * 4);
323 if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) {
328 offs[planes] = buf_size;
329 for(i = 0; i < planes; i++){
332 avctx->
width, avctx->
height, buf + offs[i], offs[i + 1] - offs[i], 0, 3) < 0) {
338 for(j = 0; j < avctx->
height; j++){
339 for(i = 0; i < avctx->
width; i++){