38 unsigned int chunk_id = 0, chunk_arg = 0;
39 unsigned long chunk_size = 0;
40 int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
41 int vqid, xpos, ypos, xp, yp, x, y, mx, my;
42 int frame_stats[2][4] = {{0},{0}};
47 chunk_id = bytestream2_get_le16(&ri->
gb);
48 chunk_size = bytestream2_get_le32(&ri->
gb);
49 chunk_arg = bytestream2_get_le16(&ri->
gb);
54 if((nv1 = chunk_arg >> 8) == 0)
56 if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
58 for(i = 0; i < nv1; i++) {
59 ri->
cb2x2[i].
y[0] = bytestream2_get_byte(&ri->
gb);
60 ri->
cb2x2[i].
y[1] = bytestream2_get_byte(&ri->
gb);
61 ri->
cb2x2[i].
y[2] = bytestream2_get_byte(&ri->
gb);
62 ri->
cb2x2[i].
y[3] = bytestream2_get_byte(&ri->
gb);
63 ri->
cb2x2[i].
u = bytestream2_get_byte(&ri->
gb);
64 ri->
cb2x2[i].
v = bytestream2_get_byte(&ri->
gb);
66 for(i = 0; i < nv2; i++)
67 for(j = 0; j < 4; j++)
68 ri->
cb4x4[i].
idx[j] = bytestream2_get_byte(&ri->
gb);
75 for (yp = ypos; yp < ypos + 16; yp += 8)
76 for (xp = xpos; xp < xpos + 16; xp += 8) {
78 vqflg = bytestream2_get_le16(&ri->
gb);
81 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
82 frame_stats[0][vqid]++;
89 int byte = bytestream2_get_byte(&ri->
gb);
90 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
91 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
96 qcell = ri->
cb4x4 + bytestream2_get_byte(&ri->
gb);
103 for (k = 0; k < 4; k++) {
109 vqflg = bytestream2_get_le16(&ri->
gb);
112 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
113 frame_stats[1][vqid]++;
119 int byte = bytestream2_get_byte(&ri->
gb);
120 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
121 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
126 qcell = ri->
cb4x4 + bytestream2_get_byte(&ri->
gb);
147 if (xpos >= ri->
width) {
165 "Dimensions must be a multiple of 16\n");
179 void *
data,
int *data_size,
182 const uint8_t *buf = avpkt->
data;
183 int buf_size = avpkt->
size;