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lavc: limit realloc() on encoding to the libav compatibility API. 

Neither the old nor new need it.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-03-22 19:12:11 +01:00
parent 0f95270afe
commit 532f1c7aa7
1 changed files with 6 additions and 2 deletions
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8
libavcodec/utils.c
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@ -987,6 +987,7 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
int ret;
AVPacket user_pkt = *avpkt;
int nb_samples;
int needs_realloc = !user_pkt.data;
*got_packet_ptr = 0;
@ -1090,6 +1091,7 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
avctx->frame_size = fs_tmp;
}
if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
needs_realloc = 0;
if (user_pkt.data) {
if (user_pkt.size >= avpkt->size) {
memcpy(user_pkt.data, avpkt->data, avpkt->size);
@ -1108,7 +1110,7 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
}
if (!ret) {
if (!user_pkt.data && avpkt->data) {
if (needs_realloc && avpkt->data) {
uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
if (new_data)
avpkt->data = new_data;
@ -1246,6 +1248,7 @@ int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
{
int ret;
AVPacket user_pkt = *avpkt;
int needs_realloc = !user_pkt.data;
*got_packet_ptr = 0;
@ -1265,6 +1268,7 @@ int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
av_assert0(ret <= 0);
if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
needs_realloc = 0;
if (user_pkt.data) {
if (user_pkt.size >= avpkt->size) {
memcpy(user_pkt.data, avpkt->data, avpkt->size);
@ -1288,7 +1292,7 @@ int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
avpkt->pts = avpkt->dts = frame->pts;
if (!user_pkt.data && avpkt->data &&
if (needs_realloc && avpkt->data &&
avpkt->destruct == av_destruct_packet) {
uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
if (new_data)