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fix uninitialized memory in dnxhd encoder

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Originally committed as revision 19912 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2009-09-18 19:03:05 +00:00
parent e9b0681610
commit 301a24de52
1 changed files with 5 additions and 0 deletions
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5
libavcodec/dnxhdenc.c
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@ -237,6 +237,8 @@ static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf)
DNXHDEncContext *ctx = avctx->priv_data;
const uint8_t header_prefix[5] = { 0x00,0x00,0x02,0x80,0x01 };
memset(buf, 0, 640);
memcpy(buf, header_prefix, 5);
buf[5] = ctx->interlaced ? ctx->cur_field+2 : 0x01;
buf[6] = 0x80; // crc flag off
@ -753,6 +755,9 @@ static int dnxhd_encode_picture(AVCodecContext *avctx, unsigned char *buf, int b
avctx->execute(avctx, dnxhd_encode_thread, (void**)&ctx->thread[0], NULL, avctx->thread_count, sizeof(void*));
assert(640 + offset + 4 <= ctx->cid_table->coding_unit_size);
memset(buf + 640 + offset, 0, ctx->cid_table->coding_unit_size - 4 - offset - 640);
AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF
if (ctx->interlaced && first_field) {