* http://wiki.multimedia.cx/index.php?title=Electronic_Arts_CMV
*/
+#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
static av_cold int cmv_decode_init(AVCodecContext *avctx){
CmvContext *s = avctx->priv_data;
s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_PAL8;
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
return 0;
}
unsigned char *dst = s->frame.data[0];
int i;
- for (i=0; i < s->avctx->height && buf+s->avctx->width<=buf_end; i++) {
+ for (i=0; i < s->avctx->height && buf_end - buf >= s->avctx->width; i++) {
memcpy(dst, buf, s->avctx->width);
dst += s->frame.linesize[0];
buf += s->avctx->width;
i = 0;
for(y=0; y<s->avctx->height/4; y++)
- for(x=0; x<s->avctx->width/4 && buf+i<buf_end; x++) {
+ for(x=0; x<s->avctx->width/4 && buf_end - buf > i; x++) {
if (buf[i]==0xFF) {
unsigned char *dst = s->frame.data[0] + (y*4)*s->frame.linesize[0] + x*4;
if (raw+16<buf_end && *raw==0xFF) { /* intra */
{
int pal_start, pal_count, i;
- if(buf+16>=buf_end) {
+ if(buf_end - buf < 16) {
av_log(s->avctx, AV_LOG_WARNING, "truncated header\n");
return;
}
pal_count = AV_RL16(&buf[14]);
buf += 16;
- for (i=pal_start; i<pal_start+pal_count && i<AVPALETTE_COUNT && buf+2<buf_end; i++) {
+ for (i=pal_start; i<pal_start+pal_count && i<AVPALETTE_COUNT && buf_end - buf >= 3; i++) {
s->palette[i] = AV_RB24(buf);
buf += 3;
}
CmvContext *s = avctx->priv_data;
const uint8_t *buf_end = buf + buf_size;
+ if (buf_end - buf < EA_PREAMBLE_SIZE)
+ return AVERROR_INVALIDDATA;
+
if (AV_RL32(buf)==MVIh_TAG||AV_RB32(buf)==MVIh_TAG) {
cmv_process_header(s, buf+EA_PREAMBLE_SIZE, buf_end);
return buf_size;
AVCodec ff_eacmv_decoder = {
.name = "eacmv",
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_CMV,
+ .id = AV_CODEC_ID_CMV,
.priv_data_size = sizeof(CmvContext),
.init = cmv_decode_init,
.close = cmv_decode_end,
.decode = cmv_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts CMV video"),
+ .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts CMV video"),
};