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avcodec/aac_adtstoasc: move the reference in the bsf internal buffer

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There's no need to allocate a new packet for it.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2018-03-16 20:06:40 -03:00
parent 0f3d1c69b5
commit a094e7f16a
1 changed files with 14 additions and 19 deletions
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33
libavcodec/aac_adtstoasc_bsf.c
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@ -36,27 +36,26 @@ typedef struct AACBSFContext {
* This filter creates an MPEG-4 AudioSpecificConfig from an MPEG-2/4
* ADTS header and removes the ADTS header.
*/
static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *pkt)
{
AACBSFContext *ctx = bsfc->priv_data;
GetBitContext gb;
PutBitContext pb;
AACADTSHeaderInfo hdr;
AVPacket *in;
int ret;
ret = ff_bsf_get_packet(bsfc, &in);
ret = ff_bsf_get_packet_ref(bsfc, pkt);
if (ret < 0)
return ret;
if (bsfc->par_in->extradata && in->size >= 2 && (AV_RB16(in->data) >> 4) != 0xfff)
goto finish;
if (bsfc->par_in->extradata && pkt->size >= 2 && (AV_RB16(pkt->data) >> 4) != 0xfff)
return 0;
if (in->size < AV_AAC_ADTS_HEADER_SIZE)
if (pkt->size < AV_AAC_ADTS_HEADER_SIZE)
goto packet_too_small;
init_get_bits(&gb, in->data, AV_AAC_ADTS_HEADER_SIZE * 8);
init_get_bits(&gb, pkt->data, AV_AAC_ADTS_HEADER_SIZE * 8);
if (ff_adts_header_parse(&gb, &hdr) < 0) {
av_log(bsfc, AV_LOG_ERROR, "Error parsing ADTS frame header!\n");
@ -71,10 +70,10 @@ static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
goto fail;
}
in->size -= AV_AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
if (in->size <= 0)
pkt->size -= AV_AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
if (pkt->size <= 0)
goto packet_too_small;
in->data += AV_AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
pkt->data += AV_AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
if (!ctx->first_frame_done) {
int pce_size = 0;
@ -82,7 +81,7 @@ static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
uint8_t *extradata;
if (!hdr.chan_config) {
init_get_bits(&gb, in->data, in->size * 8);
init_get_bits(&gb, pkt->data, pkt->size * 8);
if (get_bits(&gb, 3) != 5) {
avpriv_report_missing_feature(bsfc,
"PCE-based channel configuration "
@ -94,11 +93,11 @@ static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
init_put_bits(&pb, pce_data, MAX_PCE_SIZE);
pce_size = ff_copy_pce_data(&pb, &gb) / 8;
flush_put_bits(&pb);
in->size -= get_bits_count(&gb)/8;
in->data += get_bits_count(&gb)/8;
pkt->size -= get_bits_count(&gb)/8;
pkt->data += get_bits_count(&gb)/8;
}
extradata = av_packet_new_side_data(in, AV_PKT_DATA_NEW_EXTRADATA,
extradata = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
2 + pce_size);
if (!extradata) {
ret = AVERROR(ENOMEM);
@ -120,17 +119,13 @@ static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
ctx->first_frame_done = 1;
}
finish:
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
packet_too_small:
av_log(bsfc, AV_LOG_ERROR, "Input packet too small\n");
ret = AVERROR_INVALIDDATA;
fail:
av_packet_free(&in);
av_packet_unref(pkt);
return ret;
}