mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Martin Storsjö <martin@martin.st>oldabi
Martin Storsjö
14 years ago
parent
029f966c3a
commit
d89e738a0c
7 changed files with 140 additions and 3 deletions
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/*
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* AAC encoder wrapper |
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* Copyright (c) 2010 Martin Storsjo |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <vo-aacenc/voAAC.h> |
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#include <vo-aacenc/cmnMemory.h> |
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#include "avcodec.h" |
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#include "mpeg4audio.h" |
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typedef struct AACContext { |
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VO_AUDIO_CODECAPI codec_api; |
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VO_HANDLE handle; |
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VO_MEM_OPERATOR mem_operator; |
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VO_CODEC_INIT_USERDATA user_data; |
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} AACContext; |
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static av_cold int aac_encode_init(AVCodecContext *avctx) |
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{ |
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AACContext *s = avctx->priv_data; |
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AACENC_PARAM params = { 0 }; |
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int index; |
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avctx->coded_frame = avcodec_alloc_frame(); |
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avctx->frame_size = 1024; |
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voGetAACEncAPI(&s->codec_api); |
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s->mem_operator.Alloc = cmnMemAlloc; |
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s->mem_operator.Copy = cmnMemCopy; |
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s->mem_operator.Free = cmnMemFree; |
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s->mem_operator.Set = cmnMemSet; |
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s->mem_operator.Check = cmnMemCheck; |
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s->user_data.memflag = VO_IMF_USERMEMOPERATOR; |
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s->user_data.memData = &s->mem_operator; |
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s->codec_api.Init(&s->handle, VO_AUDIO_CodingAAC, &s->user_data); |
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params.sampleRate = avctx->sample_rate; |
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params.bitRate = avctx->bit_rate; |
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params.nChannels = avctx->channels; |
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params.adtsUsed = !(avctx->flags & CODEC_FLAG_GLOBAL_HEADER); |
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if (s->codec_api.SetParam(s->handle, VO_PID_AAC_ENCPARAM, ¶ms) |
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!= VO_ERR_NONE) { |
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av_log(avctx, AV_LOG_ERROR, "Unable to set encoding parameters\n"); |
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return AVERROR_UNKNOWN; |
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} |
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avctx->extradata_size = 2; |
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avctx->extradata = av_mallocz(avctx->extradata_size + |
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FF_INPUT_BUFFER_PADDING_SIZE); |
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if (!avctx->extradata) |
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return AVERROR(ENOMEM); |
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for (index = 0; index < 16; index++) |
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if (avctx->sample_rate == ff_mpeg4audio_sample_rates[index]) |
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break; |
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if (index == 16) { |
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av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate %d\n", |
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avctx->sample_rate); |
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return AVERROR_NOTSUPP; |
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} |
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avctx->extradata[0] = 0x02 << 3 | index >> 1; |
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avctx->extradata[1] = (index & 0x01) << 7 | avctx->channels << 3; |
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return 0; |
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} |
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static int aac_encode_close(AVCodecContext *avctx) |
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{ |
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AACContext *s = avctx->priv_data; |
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s->codec_api.Uninit(s->handle); |
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av_freep(&avctx->coded_frame); |
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return 0; |
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} |
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static int aac_encode_frame(AVCodecContext *avctx, |
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unsigned char *frame/*out*/, |
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int buf_size, void *data/*in*/) |
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{ |
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AACContext *s = avctx->priv_data; |
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VO_CODECBUFFER input = { 0 }, output = { 0 }; |
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VO_AUDIO_OUTPUTINFO output_info = { { 0 } }; |
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input.Buffer = data; |
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input.Length = 2 * avctx->channels * avctx->frame_size; |
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output.Buffer = frame; |
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output.Length = buf_size; |
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s->codec_api.SetInputData(s->handle, &input); |
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if (s->codec_api.GetOutputData(s->handle, &output, &output_info) |
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!= VO_ERR_NONE) { |
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av_log(avctx, AV_LOG_ERROR, "Unable to encode frame\n"); |
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return AVERROR_UNKNOWN; |
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} |
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return output.Length; |
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} |
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AVCodec ff_libvo_aacenc_encoder = { |
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"libvo_aacenc", |
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CODEC_TYPE_AUDIO, |
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CODEC_ID_AAC, |
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sizeof(AACContext), |
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aac_encode_init, |
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aac_encode_frame, |
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aac_encode_close, |
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NULL, |
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.sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE}, |
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.long_name = NULL_IF_CONFIG_SMALL("libvo-aacenc AAC"), |
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}; |
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