41 #define SCREEN_WIDE 640
42 #define SCREEN_HIGH 429
53 #define NEXT_BYTE(v) v = forward ? v + 1 : v - 1;
57 unsigned val, saved_val = 0;
59 const uint8_t *src, *source_end = source + src_len;
63 int forward = (frame_off <= -
SCREEN_WIDE) || (frame_off >= 0);
64 int read_two_nibbles, flag;
77 src = source + src_len - 1;
92 if (!mode || (tmplen == 4)) {
93 if (src < source || src >= source_end)
103 if (!read_two_nibbles) {
104 if (src < source || src >= source_end)
107 val |= *src << shift;
113 read_two_nibbles = 0;
115 mask = (1 << shift) - 1;
116 val = ((val >> 2) & ~mask) | (val &
mask);
118 if ((val & (0xC << shift))) {
129 saved_val = val >> (4 + shift);
131 val &= (1 << (shift + 4)) - 1;
134 advance_mode = val & 1;
135 len = (val >> 1) - 1;
136 mode += 1 + advance_mode;
139 if (len <= 0 ||
FFABS(dst_end - dst) <
len)
146 frame_end - dst < frame_off + len ||
147 frame_end - dst < len)
149 for (i = 0; i <
len; i++)
150 dst[i] = dst[frame_off + i];
156 frame_end - dst < frame_off + len ||
157 frame_end - dst < len)
159 for (i = len - 1; i >= 0; i--)
160 dst[i] = dst[frame_off + i];
165 if (source + src_len - src < len)
167 memcpy(dst, src, len);
171 if (src - source < len)
175 memcpy(dst, src, len);
179 val = forward ? dst[-1] : dst[1];
181 memset(dst, val, len);
185 memset(dst, val, len);
206 type = bytestream_get_byte(&c->
stream);
208 int blobs = bytestream_get_byte(&c->
stream);
209 if (pkt->
size < blobs * 65 + 2) {
216 int command_size = (type &
BMV_PRINT) ? 8 : 10;
221 c->
stream += command_size;
228 for (i = 0; i < 256; i++)
229 c->
pal[i] = bytestream_get_be24(&c->
stream);
236 scr_off = (int16_t)bytestream_get_le16(&c->
stream);
263 for (i = 0; i < avctx->
height; i++) {
264 memcpy(outptr, srcptr, avctx->
width);
265 srcptr += avctx->
width;
303 16512, 8256, 4128, 2064, 1032, 516, 258, 192, 129, 88, 64, 56, 48, 40, 36, 32
321 int *got_frame_ptr,
AVPacket *avpkt)
325 int buf_size = avpkt->
size;
326 int blocks = 0, total_blocks, i;
328 int16_t *output_samples;
331 total_blocks = *buf++;
332 if (buf_size < total_blocks * 65 + 1) {
334 total_blocks * 65 + 1, buf_size);
344 output_samples = (int16_t *)c->
frame.
data[0];
346 for (blocks = 0; blocks < total_blocks; blocks++) {
348 code = (code >> 1) | (code << 7);
351 for (i = 0; i < 32; i++) {
352 *output_samples++ = av_clip_int16((scale[0] * (int8_t)*buf++) >> 5);
353 *output_samples++ = av_clip_int16((scale[1] * (int8_t)*buf++) >> 5);