36 -9, -8, -6, -5, -4, -3, -2, -1,
37 0, 1, 2, 3, 4, 5, 6, 8
65 const uint8_t *buf = avpkt->
data;
66 int buf_size = avpkt->
size;
68 int in_size, out_size, ret;
85 if (in_size > buf_size) {
97 samples_end = samples + out_size;
99 if (in_size == out_size) {
100 memcpy(samples, buf, out_size);
106 while (samples < samples_end && buf - avpkt->data < buf_size) {
115 case 0: smp = 4*(count+1);
break;
116 case 1: smp = 2*(count+1);
break;
117 case 2: smp = (count & 0x20) ? 1 : count + 1;
break;
118 default: smp = count + 1;
break;
120 if (samples_end - samples < smp)
124 size = ((code == 2 && (count & 0x20)) || code == 3) ? 0 : count + 1;
125 if ((buf - avpkt->
data) + size > buf_size)
130 for (count++; count > 0; count--) {
132 sample += ( code & 0x3) - 2;
133 sample = av_clip_uint8(sample);
135 sample += ((code >> 2) & 0x3) - 2;
136 sample = av_clip_uint8(sample);
138 sample += ((code >> 4) & 0x3) - 2;
139 sample = av_clip_uint8(sample);
141 sample += (code >> 6) - 2;
142 sample = av_clip_uint8(sample);
147 for (count++; count > 0; count--) {
150 sample = av_clip_uint8(sample);
153 sample = av_clip_uint8(sample);
163 sample = av_clip_uint8(sample);
166 memcpy(samples, buf, smp);
173 memset(samples, sample, smp);