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Merge commit 'c697c590fbf296b1679b80c8f4071e4c8a6c884b'

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* commit 'c697c590fbf296b1679b80c8f4071e4c8a6c884b':
  lcl: Disentangle pointers to input data and decompression buffer

Conflicts:
	libavcodec/lcldec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-08-03 18:58:19 +02:00
commit 2212bff9a2
1 changed files with 12 additions and 13 deletions
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25
libavcodec/lcldec.c
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@ -169,10 +169,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
const uint8_t *buf = avpkt->data; const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size; int buf_size = avpkt->size;
LclDecContext * const c = avctx->priv_data; LclDecContext * const c = avctx->priv_data;
unsigned char *encoded = (unsigned char *)buf;
unsigned int pixel_ptr; unsigned int pixel_ptr;
int row, col; int row, col;
unsigned char *outptr; unsigned char *encoded, *outptr;
uint8_t *y_out, *u_out, *v_out; uint8_t *y_out, *u_out, *v_out;
unsigned int width = avctx->width; // Real image width unsigned int width = avctx->width; // Real image width
unsigned int height = avctx->height; // Real image height unsigned int height = avctx->height; // Real image height
@ -195,21 +194,21 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
if (c->imgtype == IMGTYPE_RGB24 && len == width * height * 3) { if (c->imgtype == IMGTYPE_RGB24 && len == width * height * 3) {
; ;
} else if (c->flags & FLAG_MULTITHREAD) { } else if (c->flags & FLAG_MULTITHREAD) {
mthread_inlen = AV_RL32(encoded); mthread_inlen = AV_RL32(buf);
if (len < 8) { if (len < 8) {
av_log(avctx, AV_LOG_ERROR, "len %d is too small\n", len); av_log(avctx, AV_LOG_ERROR, "len %d is too small\n", len);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
mthread_inlen = FFMIN(mthread_inlen, len - 8); mthread_inlen = FFMIN(mthread_inlen, len - 8);
mthread_outlen = AV_RL32(encoded+4); mthread_outlen = AV_RL32(buf + 4);
mthread_outlen = FFMIN(mthread_outlen, c->decomp_size); mthread_outlen = FFMIN(mthread_outlen, c->decomp_size);
mszh_dlen = mszh_decomp(encoded + 8, mthread_inlen, c->decomp_buf, c->decomp_size); mszh_dlen = mszh_decomp(buf + 8, mthread_inlen, c->decomp_buf, c->decomp_size);
if (mthread_outlen != mszh_dlen) { if (mthread_outlen != mszh_dlen) {
av_log(avctx, AV_LOG_ERROR, "Mthread1 decoded size differs (%d != %d)\n", av_log(avctx, AV_LOG_ERROR, "Mthread1 decoded size differs (%d != %d)\n",
mthread_outlen, mszh_dlen); mthread_outlen, mszh_dlen);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
mszh_dlen = mszh_decomp(encoded + 8 + mthread_inlen, len - 8 - mthread_inlen, mszh_dlen = mszh_decomp(buf + 8 + mthread_inlen, len - 8 - mthread_inlen,
c->decomp_buf + mthread_outlen, c->decomp_size - mthread_outlen); c->decomp_buf + mthread_outlen, c->decomp_size - mthread_outlen);
if (mthread_outlen != mszh_dlen) { if (mthread_outlen != mszh_dlen) {
av_log(avctx, AV_LOG_ERROR, "Mthread2 decoded size differs (%d != %d)\n", av_log(avctx, AV_LOG_ERROR, "Mthread2 decoded size differs (%d != %d)\n",
@ -219,7 +218,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
encoded = c->decomp_buf; encoded = c->decomp_buf;
len = c->decomp_size; len = c->decomp_size;
} else { } else {
mszh_dlen = mszh_decomp(encoded, len, c->decomp_buf, c->decomp_size); mszh_dlen = mszh_decomp(buf, len, c->decomp_buf, c->decomp_size);
if (c->decomp_size != mszh_dlen) { if (c->decomp_size != mszh_dlen) {
av_log(avctx, AV_LOG_ERROR, "Decoded size differs (%d != %d)\n", av_log(avctx, AV_LOG_ERROR, "Decoded size differs (%d != %d)\n",
c->decomp_size, mszh_dlen); c->decomp_size, mszh_dlen);
@ -265,23 +264,23 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
if (c->compression == COMP_ZLIB_NORMAL && c->imgtype == IMGTYPE_RGB24 && if (c->compression == COMP_ZLIB_NORMAL && c->imgtype == IMGTYPE_RGB24 &&
len == width * height * 3) { len == width * height * 3) {
if (c->flags & FLAG_PNGFILTER) { if (c->flags & FLAG_PNGFILTER) {
memcpy(c->decomp_buf, encoded, len); memcpy(c->decomp_buf, buf, len);
encoded = c->decomp_buf; encoded = c->decomp_buf;
} else { } else {
break; break;
} }
} else if (c->flags & FLAG_MULTITHREAD) { } else if (c->flags & FLAG_MULTITHREAD) {
mthread_inlen = AV_RL32(encoded); mthread_inlen = AV_RL32(buf);
mthread_inlen = FFMIN(mthread_inlen, len - 8); mthread_inlen = FFMIN(mthread_inlen, len - 8);
mthread_outlen = AV_RL32(encoded+4); mthread_outlen = AV_RL32(buf + 4);
mthread_outlen = FFMIN(mthread_outlen, c->decomp_size); mthread_outlen = FFMIN(mthread_outlen, c->decomp_size);
ret = zlib_decomp(avctx, encoded + 8, mthread_inlen, 0, mthread_outlen); ret = zlib_decomp(avctx, buf + 8, mthread_inlen, 0, mthread_outlen);
if (ret < 0) return ret; if (ret < 0) return ret;
ret = zlib_decomp(avctx, encoded + 8 + mthread_inlen, len - 8 - mthread_inlen, ret = zlib_decomp(avctx, buf + 8 + mthread_inlen, len - 8 - mthread_inlen,
mthread_outlen, mthread_outlen); mthread_outlen, mthread_outlen);
if (ret < 0) return ret; if (ret < 0) return ret;
} else { } else {
int ret = zlib_decomp(avctx, encoded, len, 0, c->decomp_size); int ret = zlib_decomp(avctx, buf, len, 0, c->decomp_size);
if (ret < 0) return ret; if (ret < 0) return ret;
} }
encoded = c->decomp_buf; encoded = c->decomp_buf;