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avcodec/aptxenc: Avoid copying packet data, allow user-supplied buffers

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When the packet size is known in advance like here, one can avoid
an intermediate buffer for the packet data by using
ff_get_encode_buffer() and also set AV_CODEC_CAP_DR1 at the same time.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-04-25 01:43:26 +02:00
parent ad232c6833
commit 9e9836424b
1 changed files with 4 additions and 3 deletions
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7
libavcodec/aptxenc.c
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@ -21,6 +21,7 @@
*/
#include "aptx.h"
#include "encode.h"
/*
* Half-band QMF analysis filter realized with a polyphase FIR filter.
@ -214,7 +215,7 @@ static int aptx_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
return ret;
output_size = s->block_size * frame->nb_samples/4;
if ((ret = ff_alloc_packet2(avctx, avpkt, output_size, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, avpkt, output_size, 0)) < 0)
return ret;
for (pos = 0, ipos = 0; pos < output_size; pos += s->block_size, ipos += 4) {
@ -245,11 +246,11 @@ const AVCodec ff_aptx_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("aptX (Audio Processing Technology for Bluetooth)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_APTX,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SMALL_LAST_FRAME,
.priv_data_size = sizeof(AptXContext),
.init = ff_aptx_init,
.encode2 = aptx_encode_frame,
.close = aptx_close,
.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_STEREO, 0},
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S32P,
@ -264,11 +265,11 @@ const AVCodec ff_aptx_hd_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("aptX HD (Audio Processing Technology for Bluetooth)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_APTX_HD,
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SMALL_LAST_FRAME,
.priv_data_size = sizeof(AptXContext),
.init = ff_aptx_init,
.encode2 = aptx_encode_frame,
.close = aptx_close,
.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_STEREO, 0},
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S32P,