#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
#include "avcodec.h"
#include "dsputil.h"
unsigned int bufsize = luma_pixels * 2 + luma_width * 3 +
(chroma_pixels + chroma_width) * 4;
+ av_freep(&s->buf);
if(!(s->buf = av_malloc(bufsize)))
return AVERROR(ENOMEM);
s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
static av_cold void iv_free_func(Indeo3DecodeContext *s)
{
- av_free(s->buf);
- av_free(s->ModPred);
- av_free(s->corrector_type);
+ av_freep(&s->buf);
+ av_freep(&s->ModPred);
+ av_freep(&s->corrector_type);
}
struct ustr {
if(cmd == 0) {
strip++;
+ if(strip >= strip_tbl + FF_ARRAY_ELEMS(strip_tbl)) {
+ av_log(s->avctx, AV_LOG_WARNING, "out of range strip\n");
+ break;
+ }
memcpy(strip, strip-1, sizeof(*strip));
strip->split_flag = 1;
strip->split_direction = 0;
continue;
} else if(cmd == 1) {
strip++;
+ if(strip >= strip_tbl + FF_ARRAY_ELEMS(strip_tbl)) {
+ av_log(s->avctx, AV_LOG_WARNING, "out of range strip\n");
+ break;
+ }
memcpy(strip, strip-1, sizeof(*strip));
strip->split_flag = 1;
strip->split_direction = 1;
lv1 = ref_lp[0];
lv2 = ref_lp[1];
if(lp2 == 0 && flag1 != 0) {
-#ifdef WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
lv1 = lv1 & 0xFF00FF00;
lv1 = (lv1 >> 8) | lv1;
lv2 = lv2 & 0xFF00FF00;
}
}
- if(strip < strip_tbl)
- return;
-
for( ; strip >= strip_tbl; strip--) {
if(strip->split_flag != 0) {
strip->split_flag = 0;
return ret;
}
-static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
- const uint8_t *buf, int buf_size)
+static int iv_decode_frame(AVCodecContext *avctx,
+ const uint8_t *buf, int buf_size)
{
+ Indeo3DecodeContext *s = avctx->priv_data;
unsigned int image_width, image_height,
chroma_width, chroma_height;
unsigned long flags, cb_offset, data_size,
image_height = bytestream_get_le16(&buf_pos);
image_width = bytestream_get_le16(&buf_pos);
- if(avcodec_check_dimensions(NULL, image_width, image_height))
+ if(avcodec_check_dimensions(avctx, image_width, image_height))
return -1;
+ if (image_width != avctx->width || image_height != avctx->height) {
+ int ret;
+ avcodec_set_dimensions(avctx, image_width, image_height);
+ s->width = avctx->width;
+ s->height = avctx->height;
+ ret = iv_alloc_frames(s);
+ if (ret < 0) {
+ s->width = s->height = 0;
+ return ret;
+ }
+ }
chroma_height = ((image_height >> 2) + 3) & 0x7ffc;
chroma_width = ((image_width >> 2) + 3) & 0x7ffc;
hdr_pos = buf_pos;
if(data_size == 0x80) return 4;
+ if(FFMAX3(y_offset, v_offset, u_offset) >= buf_size-16) {
+ av_log(s->avctx, AV_LOG_ERROR, "y/u/v offset outside buffer\n");
+ return -1;
+ }
+
if(flags & 0x200) {
s->cur_frame = s->iv_frame + 1;
s->ref_frame = s->iv_frame;
buf_pos = buf + 16 + y_offset;
mc_vector_count = bytestream_get_le32(&buf_pos);
+ if(2LL*mc_vector_count >= buf_size-16-y_offset) {
+ av_log(s->avctx, AV_LOG_ERROR, "mc_vector_count too large\n");
+ return -1;
+ }
iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, image_width,
image_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
buf_pos = buf + 16 + v_offset;
mc_vector_count = bytestream_get_le32(&buf_pos);
+ if(2LL*mc_vector_count >= buf_size-16-v_offset) {
+ av_log(s->avctx, AV_LOG_ERROR, "mc_vector_count too large\n");
+ return -1;
+ }
iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
chroma_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
buf_pos = buf + 16 + u_offset;
mc_vector_count = bytestream_get_le32(&buf_pos);
+ if(2LL*mc_vector_count >= buf_size-16-u_offset) {
+ av_log(s->avctx, AV_LOG_ERROR, "mc_vector_count too large\n");
+ return -1;
+ }
iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
chroma_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
static int indeo3_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
Indeo3DecodeContext *s=avctx->priv_data;
uint8_t *src, *dest;
int y;
- iv_decode_frame(s, buf, buf_size);
+ if (iv_decode_frame(avctx, buf, buf_size) < 0)
+ return -1;
if(s->frame.data[0])
avctx->release_buffer(avctx, &s->frame);
NULL,
indeo3_decode_end,
indeo3_decode_frame,
- 0,
+ CODEC_CAP_DR1,
NULL,
.long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),
};