/* make sure the extradata made it */
if (s->avctx->extradata_size != VQA_HEADER_SIZE) {
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: expected extradata size of %d\n", VQA_HEADER_SIZE);
+ av_log(s->avctx, AV_LOG_ERROR, "expected extradata size of %d\n", VQA_HEADER_SIZE);
return -1;
}
/* load up the VQA parameters from the header */
s->vqa_version = s->avctx->extradata[0];
if (s->vqa_version < 1 || s->vqa_version > 3) {
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: unsupported version %d\n", s->vqa_version);
+ av_log(s->avctx, AV_LOG_ERROR, "unsupported version %d\n", s->vqa_version);
return -1;
}
s->width = AV_RL16(&s->avctx->extradata[6]);
return -1;
}
+ if (s->width % s->vector_width || s->height % s->vector_height) {
+ av_log(avctx, AV_LOG_ERROR, "Image size not multiple of block size\n");
+ return AVERROR_INVALIDDATA;
+ }
+
/* allocate codebooks */
s->codebook_size = MAX_CODEBOOK_SIZE;
s->codebook = av_malloc(s->codebook_size);
break;
default:
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: Found unknown chunk type: %c%c%c%c (%08X)\n",
+ av_log(s->avctx, AV_LOG_ERROR, "Found unknown chunk type: %c%c%c%c (%08X)\n",
(chunk_type >> 24) & 0xFF,
(chunk_type >> 16) & 0xFF,
(chunk_type >> 8) & 0xFF,
if ((cpl0_chunk != -1) && (cplz_chunk != -1)) {
/* a chunk should not have both chunk types */
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found both CPL0 and CPLZ chunks\n");
+ av_log(s->avctx, AV_LOG_ERROR, "problem: found both CPL0 and CPLZ chunks\n");
return AVERROR_INVALIDDATA;
}
bytestream2_seek(&s->gb, cpl0_chunk, SEEK_SET);
chunk_size = bytestream2_get_be32(&s->gb);
/* sanity check the palette size */
- if (chunk_size / 3 > 256) {
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found a palette chunk with %d colors\n",
+ if (chunk_size / 3 > 256 || chunk_size > bytestream2_get_bytes_left(&s->gb)) {
+ av_log(s->avctx, AV_LOG_ERROR, "problem: found a palette chunk with %d colors\n",
chunk_size / 3);
return AVERROR_INVALIDDATA;
}
if ((cbf0_chunk != -1) && (cbfz_chunk != -1)) {
/* a chunk should not have both chunk types */
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found both CBF0 and CBFZ chunks\n");
+ av_log(s->avctx, AV_LOG_ERROR, "problem: found both CBF0 and CBFZ chunks\n");
return AVERROR_INVALIDDATA;
}
chunk_size = bytestream2_get_be32(&s->gb);
/* sanity check the full codebook size */
if (chunk_size > MAX_CODEBOOK_SIZE) {
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: CBF0 chunk too large (0x%X bytes)\n",
+ av_log(s->avctx, AV_LOG_ERROR, "problem: CBF0 chunk too large (0x%X bytes)\n",
chunk_size);
return AVERROR_INVALIDDATA;
}
if (vptz_chunk == -1) {
/* something is wrong if there is no VPTZ chunk */
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: no VPTZ chunk found\n");
+ av_log(s->avctx, AV_LOG_ERROR, "problem: no VPTZ chunk found\n");
return AVERROR_INVALIDDATA;
}
index_shift = 4;
else
index_shift = 3;
- for (y = 0; y < s->frame.linesize[0] * s->height;
- y += s->frame.linesize[0] * s->vector_height) {
-
- for (x = y; x < y + s->width; x += 4, lobytes++, hibytes++) {
- pixel_ptr = x;
+ for (y = 0; y < s->height; y += s->vector_height) {
+ for (x = 0; x < s->width; x += 4, lobytes++, hibytes++) {
+ pixel_ptr = y * s->frame.linesize[0] + x;
/* get the vector index, the method for which varies according to
* VQA file version */
/* handle partial codebook */
if ((cbp0_chunk != -1) && (cbpz_chunk != -1)) {
/* a chunk should not have both chunk types */
- av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found both CBP0 and CBPZ chunks\n");
+ av_log(s->avctx, AV_LOG_ERROR, "problem: found both CBP0 and CBPZ chunks\n");
return AVERROR_INVALIDDATA;
}
s->next_codebook_buffer_index += chunk_size;
s->partial_countdown--;
- if (s->partial_countdown == 0) {
+ if (s->partial_countdown <= 0) {
/* time to replace codebook */
memcpy(s->codebook, s->next_codebook_buffer,
s->next_codebook_buffer_index += chunk_size;
s->partial_countdown--;
- if (s->partial_countdown == 0) {
+ if (s->partial_countdown <= 0) {
GetByteContext gb;
bytestream2_init(&gb, s->next_codebook_buffer, s->next_codebook_buffer_index);
.close = vqa_decode_end,
.decode = vqa_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Westwood Studios VQA (Vector Quantized Animation) video"),
+ .long_name = NULL_IF_CONFIG_SMALL("Westwood Studios VQA (Vector Quantized Animation) video"),
};