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Simplify nuv: factor out LZO decompression 

Originally committed as revision 10440 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2007-09-09 08:22:07 +00:00
parent dd6ca72186
commit c612b00d7e
1 changed files with 9 additions and 14 deletions
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23
libavcodec/nuv.c
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@ -114,11 +114,19 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
// skip rest of the frameheader.
buf = &buf[12];
buf_size -= 12;
if (comptype == NUV_RTJPEG_IN_LZO || comptype == NUV_LZO) {
int outlen = c->decomp_size, inlen = buf_size;
if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
buf = c->decomp_buf;
buf_size = c->decomp_size;
}
c->pic.pict_type = FF_I_TYPE;
c->pic.key_frame = 1;
// decompress/copy/whatever data
switch (comptype) {
case NUV_LZO:
case NUV_UNCOMPRESSED: {
int height = c->height;
if (buf_size < c->width * height * 3 / 2) {
@ -128,24 +136,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
copy_frame(&c->pic, buf, c->width, height);
break;
}
case NUV_RTJPEG_IN_LZO:
case NUV_RTJPEG: {
rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, buf, buf_size);
break;
}
case NUV_RTJPEG_IN_LZO: {
int outlen = c->decomp_size, inlen = buf_size;
if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, c->decomp_buf, c->decomp_size);
break;
}
case NUV_LZO: {
int outlen = c->decomp_size, inlen = buf_size;
if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
copy_frame(&c->pic, c->decomp_buf, c->width, c->height);
break;
}
case NUV_BLACK: {
memset(c->pic.data[0], 0, c->width * c->height);
memset(c->pic.data[1], 128, c->width * c->height / 4);