23 #include "libavutil/avassert.h"
24 #include "libavutil/channel_layout.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/intreadwrite.h"
59 if ((p->
buf[0] ==
'F' || p->
buf[0] ==
'C') && p->
buf[1] ==
'W' &&
67 static int zlib_refill(
void *opaque,
uint8_t *buf,
int buf_size)
71 z_stream *z = &swf->zstream;
79 z->next_in = swf->zbuf_in;
84 z->avail_out = buf_size;
86 ret = inflate(z, Z_NO_FLUSH);
89 if (ret == Z_STREAM_END)
92 if (buf_size - z->avail_out == 0)
95 return buf_size - z->avail_out;
108 if (tag ==
MKBETAG(
'C',
'W',
'S', 0)) {
115 if (!swf->zbuf_in || !swf->zbuf_out || !swf->zpb)
117 swf->zpb->seekable = 0;
118 if (inflateInit(&swf->zstream) != Z_OK) {
127 }
else if (tag !=
MKBETAG(
'F',
'W',
'S', 0))
131 len = (4 * nbits - 3 + 7) / 8;
143 int sample_rate_code, sample_size_code;
158 sample_rate_code = info>>2 & 3;
159 sample_size_code = info>>1 & 1;
245 if (((v>>4) & 15) == 2) {
279 const int colormapbpp = 3 + alpha_bmp;
280 int linesize, colormapsize = 0;
283 const int bmp_fmt =
avio_r8(pb);
293 colormapsize =
avio_r8(pb) + 1;
297 linesize = width * 2;
300 linesize = width * 4;
304 goto bitmap_end_skip;
307 linesize =
FFALIGN(linesize, 4);
310 linesize >= INT_MAX / height ||
311 linesize * height >= INT_MAX - colormapsize * colormapbpp) {
313 goto bitmap_end_skip;
316 out_len = colormapsize * colormapbpp + linesize *
height;
318 av_dlog(s,
"bitmap: ch=%d fmt=%d %dx%d (linesize=%d) len=%d->%ld pal=%d\n",
319 ch_id, bmp_fmt, width, height, linesize, len, out_len, colormapsize);
329 if (len < 0 || (res = uncompress(buf, &out_len, zbuf, len)) != Z_OK) {
331 goto bitmap_end_skip;
352 if ((res =
av_new_packet(pkt, out_len - colormapsize * colormapbpp)) < 0)
354 if (!st->codec->width && !st->codec->height) {
356 st->codec->height =
height;
366 for (i = 0; i < colormapsize; i++)
367 if (alpha_bmp) colormap[i] = buf[3]<<24 |
AV_RB24(buf + 4*i);
368 else colormap[i] = 0xff
U <<24 |
AV_RB24(buf + 3*i);
385 if (st->codec->pix_fmt !=
AV_PIX_FMT_NONE && st->codec->pix_fmt != pix_fmt) {
392 if (linesize * height > pkt->
size) {
396 memcpy(pkt->
data, buf + colormapsize*colormapbpp, linesize * height);
482 inflateEnd(&s->zstream);