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qcelp: check output buffer size before decoding

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This commit is contained in:
Justin Ruggles 2011-09-14 13:38:07 -04:00
parent bde2570013
commit e43dd3d2a8
1 changed files with 8 additions and 2 deletions
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10
libavcodec/qcelpdec.c
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@ -738,11 +738,17 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
int buf_size = avpkt->size; int buf_size = avpkt->size;
QCELPContext *q = avctx->priv_data; QCELPContext *q = avctx->priv_data;
float *outbuffer = data; float *outbuffer = data;
int i; int i, out_size;
float quantized_lspf[10], lpc[10]; float quantized_lspf[10], lpc[10];
float gain[16]; float gain[16];
float *formant_mem; float *formant_mem;
out_size = 160 * av_get_bytes_per_sample(avctx->sample_fmt);
if (*data_size < out_size) {
av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
return AVERROR(EINVAL);
}
if((q->bitrate = determine_bitrate(avctx, buf_size, &buf)) == I_F_Q) if((q->bitrate = determine_bitrate(avctx, buf_size, &buf)) == I_F_Q)
{ {
warn_insufficient_frame_quality(avctx, "bitrate cannot be determined."); warn_insufficient_frame_quality(avctx, "bitrate cannot be determined.");
@ -837,7 +843,7 @@ erasure:
memcpy(q->prev_lspf, quantized_lspf, sizeof(q->prev_lspf)); memcpy(q->prev_lspf, quantized_lspf, sizeof(q->prev_lspf));
q->prev_bitrate = q->bitrate; q->prev_bitrate = q->bitrate;
*data_size = 160 * sizeof(*outbuffer); *data_size = out_size;
return buf_size; return buf_size;
} }