3 * Copyright (c) 2010 Martin Storsjo
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <vo-aacenc/voAAC.h>
23 #include <vo-aacenc/cmnMemory.h>
26 #include "mpeg4audio.h"
28 typedef struct AACContext {
29 VO_AUDIO_CODECAPI codec_api;
31 VO_MEM_OPERATOR mem_operator;
32 VO_CODEC_INIT_USERDATA user_data;
35 static av_cold int aac_encode_init(AVCodecContext *avctx)
37 AACContext *s = avctx->priv_data;
38 AACENC_PARAM params = { 0 };
41 avctx->coded_frame = avcodec_alloc_frame();
42 avctx->frame_size = 1024;
44 voGetAACEncAPI(&s->codec_api);
46 s->mem_operator.Alloc = cmnMemAlloc;
47 s->mem_operator.Copy = cmnMemCopy;
48 s->mem_operator.Free = cmnMemFree;
49 s->mem_operator.Set = cmnMemSet;
50 s->mem_operator.Check = cmnMemCheck;
51 s->user_data.memflag = VO_IMF_USERMEMOPERATOR;
52 s->user_data.memData = &s->mem_operator;
53 s->codec_api.Init(&s->handle, VO_AUDIO_CodingAAC, &s->user_data);
55 params.sampleRate = avctx->sample_rate;
56 params.bitRate = avctx->bit_rate;
57 params.nChannels = avctx->channels;
58 params.adtsUsed = !(avctx->flags & CODEC_FLAG_GLOBAL_HEADER);
59 if (s->codec_api.SetParam(s->handle, VO_PID_AAC_ENCPARAM, ¶ms)
61 av_log(avctx, AV_LOG_ERROR, "Unable to set encoding parameters\n");
62 return AVERROR(EINVAL);
65 for (index = 0; index < 16; index++)
66 if (avctx->sample_rate == ff_mpeg4audio_sample_rates[index])
69 av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate %d\n",
71 return AVERROR(ENOSYS);
73 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
74 avctx->extradata_size = 2;
75 avctx->extradata = av_mallocz(avctx->extradata_size +
76 FF_INPUT_BUFFER_PADDING_SIZE);
77 if (!avctx->extradata)
78 return AVERROR(ENOMEM);
80 avctx->extradata[0] = 0x02 << 3 | index >> 1;
81 avctx->extradata[1] = (index & 0x01) << 7 | avctx->channels << 3;
86 static int aac_encode_close(AVCodecContext *avctx)
88 AACContext *s = avctx->priv_data;
90 s->codec_api.Uninit(s->handle);
91 av_freep(&avctx->coded_frame);
96 static int aac_encode_frame(AVCodecContext *avctx,
97 unsigned char *frame/*out*/,
98 int buf_size, void *data/*in*/)
100 AACContext *s = avctx->priv_data;
101 VO_CODECBUFFER input = { 0 }, output = { 0 };
102 VO_AUDIO_OUTPUTINFO output_info = { { 0 } };
105 input.Length = 2 * avctx->channels * avctx->frame_size;
106 output.Buffer = frame;
107 output.Length = buf_size;
109 s->codec_api.SetInputData(s->handle, &input);
110 if (s->codec_api.GetOutputData(s->handle, &output, &output_info)
112 av_log(avctx, AV_LOG_ERROR, "Unable to encode frame\n");
113 return AVERROR(EINVAL);
115 return output.Length;
118 AVCodec ff_libvo_aacenc_encoder = {
127 .sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE},
128 .long_name = NULL_IF_CONFIG_SMALL("Android VisualOn AAC"),