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alacenc: fix error handling and potential memleaks in alac_encode_init()

This commit is contained in:
Justin Ruggles 2012-02-01 20:54:34 -05:00
parent 6e63228323
commit 51c2483862
1 changed files with 38 additions and 19 deletions
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57
libavcodec/alacenc.c
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@ -386,11 +386,21 @@ static void write_compressed_frame(AlacEncodeContext *s)
}
}
static av_cold int alac_encode_close(AVCodecContext *avctx)
{
AlacEncodeContext *s = avctx->priv_data;
ff_lpc_end(&s->lpc_ctx);
av_freep(&avctx->extradata);
avctx->extradata_size = 0;
av_freep(&avctx->coded_frame);
return 0;
}
static av_cold int alac_encode_init(AVCodecContext *avctx)
{
AlacEncodeContext *s = avctx->priv_data;
int ret;
uint8_t *alac_extradata = av_mallocz(ALAC_EXTRADATA_SIZE+1);
uint8_t *alac_extradata;
avctx->frame_size = DEFAULT_FRAME_SIZE;
@ -423,6 +433,14 @@ static av_cold int alac_encode_init(AVCodecContext *avctx)
s->write_sample_size = DEFAULT_SAMPLE_SIZE + avctx->channels - 1; // FIXME: consider wasted_bytes
avctx->extradata = av_mallocz(ALAC_EXTRADATA_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata) {
ret = AVERROR(ENOMEM);
goto error;
}
avctx->extradata_size = ALAC_EXTRADATA_SIZE;
alac_extradata = avctx->extradata;
AV_WB32(alac_extradata, ALAC_EXTRADATA_SIZE);
AV_WB32(alac_extradata+4, MKBETAG('a','l','a','c'));
AV_WB32(alac_extradata+12, avctx->frame_size);
@ -446,7 +464,8 @@ static av_cold int alac_encode_init(AVCodecContext *avctx)
avctx->min_prediction_order > ALAC_MAX_LPC_ORDER) {
av_log(avctx, AV_LOG_ERROR, "invalid min prediction order: %d\n",
avctx->min_prediction_order);
return -1;
ret = AVERROR(EINVAL);
goto error;
}
s->min_prediction_order = avctx->min_prediction_order;
@ -458,7 +477,8 @@ static av_cold int alac_encode_init(AVCodecContext *avctx)
avctx->max_prediction_order > ALAC_MAX_LPC_ORDER) {
av_log(avctx, AV_LOG_ERROR, "invalid max prediction order: %d\n",
avctx->max_prediction_order);
return -1;
ret = AVERROR(EINVAL);
goto error;
}
s->max_prediction_order = avctx->max_prediction_order;
@ -468,18 +488,27 @@ static av_cold int alac_encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR,
"invalid prediction orders: min=%d max=%d\n",
s->min_prediction_order, s->max_prediction_order);
return -1;
ret = AVERROR(EINVAL);
goto error;
}
avctx->extradata = alac_extradata;
avctx->extradata_size = ALAC_EXTRADATA_SIZE;
avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame) {
ret = AVERROR(ENOMEM);
goto error;
}
s->avctx = avctx;
ret = ff_lpc_init(&s->lpc_ctx, avctx->frame_size, s->max_prediction_order,
FF_LPC_TYPE_LEVINSON);
if ((ret = ff_lpc_init(&s->lpc_ctx, avctx->frame_size,
s->max_prediction_order,
FF_LPC_TYPE_LEVINSON)) < 0) {
goto error;
}
return 0;
error:
alac_encode_close(avctx);
return ret;
}
@ -529,16 +558,6 @@ verbatim:
return out_bytes;
}
static av_cold int alac_encode_close(AVCodecContext *avctx)
{
AlacEncodeContext *s = avctx->priv_data;
ff_lpc_end(&s->lpc_ctx);
av_freep(&avctx->extradata);
avctx->extradata_size = 0;
av_freep(&avctx->coded_frame);
return 0;
}
AVCodec ff_alac_encoder = {
.name = "alac",
.type = AVMEDIA_TYPE_AUDIO,