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Code Issues Releases Activity

avcodec/libgsmenc: 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.

Reviewed-by: James Almer <jamrial@gmail.com>
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 398822a70e
commit 91567c28fc
1 changed files with 4 additions and 1 deletions
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5
libavcodec/libgsmenc.c
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@ -37,6 +37,7 @@
#include "libavutil/common.h"
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
#include "gsm.h"
@ -98,7 +99,7 @@ static int libgsm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
gsm_signal *samples = (gsm_signal *)frame->data[0];
struct gsm_state *state = avctx->priv_data;
if ((ret = ff_alloc_packet2(avctx, avpkt, avctx->block_align, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, avpkt, avctx->block_align, 0)) < 0)
return ret;
switch(avctx->codec_id) {
@ -125,6 +126,7 @@ const AVCodec ff_libgsm_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_GSM,
.capabilities = AV_CODEC_CAP_DR1,
.init = libgsm_encode_init,
.encode2 = libgsm_encode_frame,
.close = libgsm_encode_close,
@ -141,6 +143,7 @@ const AVCodec ff_libgsm_ms_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("libgsm GSM Microsoft variant"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_GSM_MS,
.capabilities = AV_CODEC_CAP_DR1,
.init = libgsm_encode_init,
.encode2 = libgsm_encode_frame,
.close = libgsm_encode_close,