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avcodec/extract_extradata: don't uninitialize the H2645Packet on every processed packet

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Based on hevc_parser code. This prevents repeated unnecessary allocations
and frees on every packet processed by the bsf.

Reviewed-by: Jun Zhao <mypopydev@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
James Almer 2018-03-10 19:57:35 -03:00 committed by Luca Barbato
parent 6442d8bad6
commit 3365e91b1e
1 changed files with 19 additions and 14 deletions
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33
libavcodec/extract_extradata_bsf.c
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@ -36,6 +36,9 @@ typedef struct ExtractExtradataContext {
int (*extract)(AVBSFContext *ctx, AVPacket *pkt,
uint8_t **data, int *size);
/* H264/HEVC specifc fields */
H2645Packet h2645_pkt;
/* AVOptions */
int remove;
} ExtractExtradataContext;
@ -61,7 +64,6 @@ static int extract_extradata_h2645(AVBSFContext *ctx, AVPacket *pkt,
ExtractExtradataContext *s = ctx->priv_data;
H2645Packet h2645_pkt = { 0 };
int extradata_size = 0, filtered_size = 0;
const int *extradata_nal_types;
int nb_extradata_nal_types;
@ -75,13 +77,13 @@ static int extract_extradata_h2645(AVBSFContext *ctx, AVPacket *pkt,
nb_extradata_nal_types = FF_ARRAY_ELEMS(extradata_nal_types_h264);
}
ret = ff_h2645_packet_split(&h2645_pkt, pkt->data, pkt->size,
ret = ff_h2645_packet_split(&s->h2645_pkt, pkt->data, pkt->size,
ctx, 0, 0, ctx->par_in->codec_id);
if (ret < 0)
goto fail;
return ret;
for (i = 0; i < h2645_pkt.nb_nals; i++) {
H2645NAL *nal = &h2645_pkt.nals[i];
for (i = 0; i < s->h2645_pkt.nb_nals; i++) {
H2645NAL *nal = &s->h2645_pkt.nals[i];
if (val_in_array(extradata_nal_types, nb_extradata_nal_types, nal->type)) {
extradata_size += nal->raw_size + 3;
if (ctx->par_in->codec_id == AV_CODEC_ID_HEVC) {
@ -104,8 +106,7 @@ static int extract_extradata_h2645(AVBSFContext *ctx, AVPacket *pkt,
if (s->remove) {
filtered_buf = av_buffer_alloc(filtered_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!filtered_buf) {
ret = AVERROR(ENOMEM);
goto fail;
return AVERROR(ENOMEM);
}
memset(filtered_buf->data + filtered_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
@ -115,16 +116,15 @@ static int extract_extradata_h2645(AVBSFContext *ctx, AVPacket *pkt,
extradata = av_malloc(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!extradata) {
av_buffer_unref(&filtered_buf);
ret = AVERROR(ENOMEM);
goto fail;
return AVERROR(ENOMEM);
}
memset(extradata + extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
*data = extradata;
*size = extradata_size;
for (i = 0; i < h2645_pkt.nb_nals; i++) {
H2645NAL *nal = &h2645_pkt.nals[i];
for (i = 0; i < s->h2645_pkt.nb_nals; i++) {
H2645NAL *nal = &s->h2645_pkt.nals[i];
if (val_in_array(extradata_nal_types, nb_extradata_nal_types,
nal->type)) {
AV_WB24(extradata, 1); // startcode
@ -145,9 +145,7 @@ static int extract_extradata_h2645(AVBSFContext *ctx, AVPacket *pkt,
}
}
fail:
ff_h2645_packet_uninit(&h2645_pkt);
return ret;
return 0;
}
static int extract_extradata_vc1(AVBSFContext *ctx, AVPacket *pkt,
@ -283,6 +281,12 @@ fail:
return ret;
}
static void extract_extradata_close(AVBSFContext *ctx)
{
ExtractExtradataContext *s = ctx->priv_data;
ff_h2645_packet_uninit(&s->h2645_pkt);
}
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_CAVS,
AV_CODEC_ID_H264,
@ -315,4 +319,5 @@ const AVBitStreamFilter ff_extract_extradata_bsf = {
.priv_class = &extract_extradata_class,
.init = extract_extradata_init,
.filter = extract_extradata_filter,
.close = extract_extradata_close,
};