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avcodec/adpcmenc: Avoid copying packet data, allow direct rendering 

When the packet size is known in advance like here, one can avoid
an intermediate buffer for the packet data; and one can also use
user-supplied buffers.

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 259a762729
commit 32b20a274a
1 changed files with 3 additions and 3 deletions
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6
libavcodec/adpcmenc.c
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@ -29,6 +29,7 @@
#include "bytestream.h"
#include "adpcm.h"
#include "adpcm_data.h"
#include "encode.h"
#include "internal.h"
/**
@ -605,7 +606,7 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
pkt_size = (frame->nb_samples * avctx->channels) / 2;
else
pkt_size = avctx->block_align;
if ((ret = ff_alloc_packet2(avctx, avpkt, pkt_size, 0)) < 0)
if ((ret = ff_get_encode_buffer(avctx, avpkt, pkt_size, 0)) < 0)
return ret;
dst = avpkt->data;
@ -960,7 +961,6 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
return AVERROR(EINVAL);
}
avpkt->size = pkt_size;
*got_packet_ptr = 1;
return 0;
}
@ -1005,7 +1005,7 @@ const AVCodec ff_ ## name_ ## _encoder = { \
.encode2 = adpcm_encode_frame, \
.close = adpcm_encode_close, \
.sample_fmts = sample_fmts_, \
.capabilities = capabilities_, \
.capabilities = capabilities_ | AV_CODEC_CAP_DR1, \
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_INIT_THREADSAFE, \
.priv_class = &name_ ## _encoder_class, \
}