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avcodec/[e]ac3enc: Allow user-supplied buffers

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The size of the output buffer is always known in advance and
the code has no alignment requirement (it uses mostly the PutBits API),
so allowing user-supplied buffers is trivial.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-04-27 15:57:34 +02:00
parent 32b20a274a
commit 39bb36d723
4 changed files with 5 additions and 1 deletions
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3
libavcodec/ac3enc.c
View File

@ -38,6 +38,7 @@
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
#include "me_cmp.h"
#include "put_bits.h"
@ -1760,7 +1761,7 @@ int ff_ac3_encode_frame_common_end(AVCodecContext *avctx, AVPacket *avpkt,
ac3_quantize_mantissas(s);
ret = ff_alloc_packet2(avctx, avpkt, s->frame_size, s->frame_size);
ret = ff_get_encode_buffer(avctx, avpkt, s->frame_size, 0);
if (ret < 0)
return ret;
ac3_output_frame(s, avpkt->data);

1
libavcodec/ac3enc_fixed.c
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@ -132,6 +132,7 @@ const AVCodec ff_ac3_fixed_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_AC3,
.capabilities = AV_CODEC_CAP_DR1,
.priv_data_size = sizeof(AC3EncodeContext),
.init = ac3_fixed_encode_init,
.encode2 = ff_ac3_fixed_encode_frame,

1
libavcodec/ac3enc_float.c
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@ -136,6 +136,7 @@ const AVCodec ff_ac3_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("ATSC A/52A (AC-3)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_AC3,
.capabilities = AV_CODEC_CAP_DR1,
.priv_data_size = sizeof(AC3EncodeContext),
.init = ff_ac3_float_encode_init,
.encode2 = ff_ac3_float_encode_frame,

1
libavcodec/eac3enc.c
View File

@ -253,6 +253,7 @@ const AVCodec ff_eac3_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("ATSC A/52 E-AC-3"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_EAC3,
.capabilities = AV_CODEC_CAP_DR1,
.priv_data_size = sizeof(AC3EncodeContext),
.init = ff_ac3_float_encode_init,
.encode2 = ff_ac3_float_encode_frame,