}
}
-static int rle_uncompress(const uint8_t *src, int ssize, uint8_t *dst, int dsize)
+static int zip_uncompress(const uint8_t *src, int compressed_size,
+ int uncompressed_size, EXRThreadData *td)
{
- int8_t *d = (int8_t *)dst;
+ unsigned long dest_len = uncompressed_size;
+
+ if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
+ dest_len != uncompressed_size)
+ return AVERROR(EINVAL);
+
+ predictor(td->tmp, uncompressed_size);
+ reorder_pixels(td->tmp, td->uncompressed_data, uncompressed_size);
+
+ return 0;
+}
+
+static int rle_uncompress(const uint8_t *src, int compressed_size,
+ int uncompressed_size, EXRThreadData *td)
+{
+ int8_t *d = (int8_t *)td->tmp;
const int8_t *s = (const int8_t *)src;
+ int ssize = compressed_size;
+ int dsize = uncompressed_size;
int8_t *dend = d + dsize;
int count;
}
}
- return dend != d;
+ if (dend != d)
+ return AVERROR_INVALIDDATA;
+
+ predictor(td->tmp, uncompressed_size);
+ reorder_pixels(td->tmp, td->uncompressed_data, uncompressed_size);
+
+ return 0;
}
static int decode_block(AVCodecContext *avctx, void *tdata,
const uint8_t *src;
int axmax = (avctx->width - (s->xmax + 1)) * 2 * s->desc->nb_components;
int bxmin = s->xmin * 2 * s->desc->nb_components;
- int i, x, buf_size = s->buf_size;
+ int ret, i, x, buf_size = s->buf_size;
line_offset = AV_RL64(s->table + jobnr * 8);
// Check if the buffer has the required bytes needed from the offset
av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
if (!td->uncompressed_data || !td->tmp)
return AVERROR(ENOMEM);
- }
- if ((s->compr == EXR_ZIP1 || s->compr == EXR_ZIP16) && data_size < uncompressed_size) {
- unsigned long dest_len = uncompressed_size;
- if (uncompress(td->tmp, &dest_len, src, data_size) != Z_OK ||
- dest_len != uncompressed_size) {
- av_log(avctx, AV_LOG_ERROR, "error during zlib decompression\n");
- return AVERROR(EINVAL);
- }
- } else if (s->compr == EXR_RLE && data_size < uncompressed_size) {
- if (rle_uncompress(src, data_size, td->tmp, uncompressed_size)) {
- av_log(avctx, AV_LOG_ERROR, "error during rle decompression\n");
- return AVERROR(EINVAL);
+ switch (s->compr) {
+ case EXR_ZIP1:
+ case EXR_ZIP16:
+ ret = zip_uncompress(src, data_size, uncompressed_size, td);
+ break;
+ case EXR_RLE:
+ ret = rle_uncompress(src, data_size, uncompressed_size, td);
}
- }
- if (data_size < uncompressed_size) {
- predictor(td->tmp, uncompressed_size);
- reorder_pixels(td->tmp, td->uncompressed_data, uncompressed_size);
src = td->uncompressed_data;
}