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[FFmpeg-devel,14/46] avcodec/dcaenc: Avoid copying packet data, allow user-supplied buffers

Message ID HE1PR0301MB215428DB2466C079223DD6B38F5F9@HE1PR0301MB2154.eurprd03.prod.outlook.com
State Accepted
Commit 4569c70f140f01447d1de385a2dd490976d95f89
Headers show
Series [FFmpeg-devel,01/46] avcodec/a64multienc: Avoid intermediate buffer | expand

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Commit Message

Andreas Rheinhardt April 29, 2021, 11:56 p.m. UTC 
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>
---
 libavcodec/dcaenc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/libavcodec/dcaenc.c b/libavcodec/dcaenc.c
index 76f1f141d1..71a76bc356 100644
--- a/libavcodec/dcaenc.c
+++ b/libavcodec/dcaenc.c
@@ -37,6 +37,7 @@ 
 #include "dca_core.h"
 #include "dcadata.h"
 #include "dcaenc.h"
+#include "encode.h"
 #include "fft.h"
 #include "internal.h"
 #include "mathops.h"
@@ -1182,7 +1183,7 @@  static int encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     const int32_t *samples;
     int ret, i;
 
-    if ((ret = ff_alloc_packet2(avctx, avpkt, c->frame_size, 0)) < 0)
+    if ((ret = ff_get_encode_buffer(avctx, avpkt, c->frame_size, 0)) < 0)
         return ret;
 
     samples = (const int32_t *)frame->data[0];
@@ -1239,11 +1240,11 @@  const AVCodec ff_dca_encoder = {
     .long_name             = NULL_IF_CONFIG_SMALL("DCA (DTS Coherent Acoustics)"),
     .type                  = AVMEDIA_TYPE_AUDIO,
     .id                    = AV_CODEC_ID_DTS,
+    .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_EXPERIMENTAL,
     .priv_data_size        = sizeof(DCAEncContext),
     .init                  = encode_init,
     .close                 = encode_close,
     .encode2               = encode_frame,
-    .capabilities          = AV_CODEC_CAP_EXPERIMENTAL,
     .caps_internal         = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
     .sample_fmts           = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S32,
                                                             AV_SAMPLE_FMT_NONE },