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dxa: make code independent of sizeof(AVFrame)

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-07-06 16:30:11 +00:00
parent be25614177
commit 19436308b4
1 changed files with 13 additions and 10 deletions
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23
libavcodec/dxa.c
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@ -39,7 +39,7 @@
* Decoder context * Decoder context
*/ */
typedef struct DxaDecContext { typedef struct DxaDecContext {
AVFrame prev; AVFrame *prev;
int dsize; int dsize;
uint8_t *decomp_buf; uint8_t *decomp_buf;
@ -229,7 +229,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
outptr = frame->data[0]; outptr = frame->data[0];
srcptr = c->decomp_buf; srcptr = c->decomp_buf;
tmpptr = c->prev.data[0]; tmpptr = c->prev->data[0];
stride = frame->linesize[0]; stride = frame->linesize[0];
if (bytestream2_get_le32(&gb) == MKTAG('N','U','L','L')) if (bytestream2_get_le32(&gb) == MKTAG('N','U','L','L'))
@ -250,8 +250,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
case -1: case -1:
frame->key_frame = 0; frame->key_frame = 0;
frame->pict_type = AV_PICTURE_TYPE_P; frame->pict_type = AV_PICTURE_TYPE_P;
if(c->prev.data[0]) if (c->prev->data[0])
memcpy(frame->data[0], c->prev.data[0], frame->linesize[0] * avctx->height); memcpy(frame->data[0], c->prev->data[0], frame->linesize[0] * avctx->height);
else{ // Should happen only when first frame is 'NULL' else{ // Should happen only when first frame is 'NULL'
memset(frame->data[0], 0, frame->linesize[0] * avctx->height); memset(frame->data[0], 0, frame->linesize[0] * avctx->height);
frame->key_frame = 1; frame->key_frame = 1;
@ -279,19 +279,19 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac
case 13: case 13:
frame->key_frame = 0; frame->key_frame = 0;
frame->pict_type = AV_PICTURE_TYPE_P; frame->pict_type = AV_PICTURE_TYPE_P;
if (!c->prev.data[0]) { if (!c->prev->data[0]) {
av_log(avctx, AV_LOG_ERROR, "Missing reference frame\n"); av_log(avctx, AV_LOG_ERROR, "Missing reference frame\n");
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
decode_13(avctx, c, frame->data[0], frame->linesize[0], srcptr, c->prev.data[0]); decode_13(avctx, c, frame->data[0], frame->linesize[0], srcptr, c->prev->data[0]);
break; break;
default: default:
av_log(avctx, AV_LOG_ERROR, "Unknown/unsupported compression type %d\n", compr); av_log(avctx, AV_LOG_ERROR, "Unknown/unsupported compression type %d\n", compr);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
av_frame_unref(&c->prev); av_frame_unref(c->prev);
if ((ret = av_frame_ref(&c->prev, frame)) < 0) if ((ret = av_frame_ref(c->prev, frame)) < 0)
return ret; return ret;
*got_frame = 1; *got_frame = 1;
@ -306,11 +306,14 @@ static av_cold int decode_init(AVCodecContext *avctx)
avctx->pix_fmt = AV_PIX_FMT_PAL8; avctx->pix_fmt = AV_PIX_FMT_PAL8;
avcodec_get_frame_defaults(&c->prev); c->prev = av_frame_alloc();
if (!c->prev)
return AVERROR(ENOMEM);
c->dsize = avctx->width * avctx->height * 2; c->dsize = avctx->width * avctx->height * 2;
c->decomp_buf = av_malloc(c->dsize); c->decomp_buf = av_malloc(c->dsize);
if (!c->decomp_buf) { if (!c->decomp_buf) {
av_frame_free(&c->prev);
av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n"); av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
@ -323,7 +326,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
DxaDecContext * const c = avctx->priv_data; DxaDecContext * const c = avctx->priv_data;
av_freep(&c->decomp_buf); av_freep(&c->decomp_buf);
av_frame_unref(&c->prev); av_frame_free(&c->prev);
return 0; return 0;
} }