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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];