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ee77140afa
* commit 'b2bed9325dbd6be0da1d91ffed3f513c40274fd2': cosmetics: Group .name and .long_name together in codec/format declarations Conflicts: libavcodec/8svx.c libavcodec/alac.c libavcodec/cljr.c libavcodec/dnxhddec.c libavcodec/dnxhdenc.c libavcodec/dpxenc.c libavcodec/dvdec.c libavcodec/dvdsubdec.c libavcodec/dvdsubenc.c libavcodec/ffv1dec.c libavcodec/flacdec.c libavcodec/flvdec.c libavcodec/fraps.c libavcodec/frwu.c libavcodec/g726.c libavcodec/gif.c libavcodec/gifdec.c libavcodec/h261dec.c libavcodec/h263dec.c libavcodec/iff.c libavcodec/imc.c libavcodec/libopencore-amr.c libavcodec/libopenjpegdec.c libavcodec/libopenjpegenc.c libavcodec/libspeexenc.c libavcodec/libvo-amrwbenc.c libavcodec/libvorbisenc.c libavcodec/libvpxenc.c libavcodec/libx264.c libavcodec/libxavs.c libavcodec/libxvid.c libavcodec/ljpegenc.c libavcodec/mjpegbdec.c libavcodec/mjpegdec.c libavcodec/mpeg12dec.c libavcodec/mpeg4videodec.c libavcodec/msmpeg4dec.c libavcodec/pgssubdec.c libavcodec/pngdec.c libavcodec/pngenc.c libavcodec/proresdec_lgpl.c libavcodec/proresenc_kostya.c libavcodec/ra144enc.c libavcodec/rawdec.c libavcodec/rv10.c libavcodec/sp5xdec.c libavcodec/takdec.c libavcodec/tta.c libavcodec/v210dec.c libavcodec/vp6.c libavcodec/wavpack.c libavcodec/xbmenc.c libavcodec/yop.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
198 lines
5.8 KiB
C
198 lines
5.8 KiB
C
/*
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* iLBC decoder/encoder stub
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* Copyright (c) 2012 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 <ilbc.h>
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#include "libavutil/channel_layout.h"
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "internal.h"
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static int get_mode(AVCodecContext *avctx)
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{
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if (avctx->block_align == 38)
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return 20;
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else if (avctx->block_align == 50)
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return 30;
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else if (avctx->bit_rate > 0)
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return avctx->bit_rate <= 14000 ? 30 : 20;
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else
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return -1;
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}
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typedef struct ILBCDecContext {
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const AVClass *class;
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iLBC_Dec_Inst_t decoder;
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int enhance;
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} ILBCDecContext;
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static const AVOption ilbc_dec_options[] = {
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{ "enhance", "Enhance the decoded audio (adds delay)", offsetof(ILBCDecContext, enhance), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM },
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{ NULL }
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};
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static const AVClass ilbc_dec_class = {
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.class_name = "libilbc",
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.item_name = av_default_item_name,
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.option = ilbc_dec_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static av_cold int ilbc_decode_init(AVCodecContext *avctx)
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{
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ILBCDecContext *s = avctx->priv_data;
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int mode;
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if ((mode = get_mode(avctx)) < 0) {
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av_log(avctx, AV_LOG_ERROR, "iLBC frame mode not indicated\n");
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return AVERROR(EINVAL);
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}
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WebRtcIlbcfix_InitDecode(&s->decoder, mode, s->enhance);
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avctx->channels = 1;
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avctx->channel_layout = AV_CH_LAYOUT_MONO;
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avctx->sample_rate = 8000;
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avctx->sample_fmt = AV_SAMPLE_FMT_S16;
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return 0;
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}
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static int ilbc_decode_frame(AVCodecContext *avctx, void *data,
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int *got_frame_ptr, AVPacket *avpkt)
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{
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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ILBCDecContext *s = avctx->priv_data;
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AVFrame *frame = data;
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int ret;
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if (s->decoder.no_of_bytes > buf_size) {
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av_log(avctx, AV_LOG_ERROR, "iLBC frame too short (%u, should be %u)\n",
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buf_size, s->decoder.no_of_bytes);
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return AVERROR_INVALIDDATA;
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}
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frame->nb_samples = s->decoder.blockl;
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if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
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return ret;
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WebRtcIlbcfix_DecodeImpl((WebRtc_Word16*) frame->data[0],
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(const WebRtc_UWord16*) buf, &s->decoder, 1);
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*got_frame_ptr = 1;
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return s->decoder.no_of_bytes;
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}
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AVCodec ff_libilbc_decoder = {
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.name = "libilbc",
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.long_name = NULL_IF_CONFIG_SMALL("iLBC (Internet Low Bitrate Codec)"),
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.type = AVMEDIA_TYPE_AUDIO,
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.id = AV_CODEC_ID_ILBC,
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.priv_data_size = sizeof(ILBCDecContext),
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.init = ilbc_decode_init,
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.decode = ilbc_decode_frame,
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.capabilities = CODEC_CAP_DR1,
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.priv_class = &ilbc_dec_class,
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};
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typedef struct ILBCEncContext {
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const AVClass *class;
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iLBC_Enc_Inst_t encoder;
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int mode;
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} ILBCEncContext;
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static const AVOption ilbc_enc_options[] = {
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{ "mode", "iLBC mode (20 or 30 ms frames)", offsetof(ILBCEncContext, mode), AV_OPT_TYPE_INT, { .i64 = 20 }, 20, 30, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
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{ NULL }
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};
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static const AVClass ilbc_enc_class = {
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.class_name = "libilbc",
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.item_name = av_default_item_name,
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.option = ilbc_enc_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static av_cold int ilbc_encode_init(AVCodecContext *avctx)
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{
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ILBCEncContext *s = avctx->priv_data;
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int mode;
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if (avctx->sample_rate != 8000) {
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av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
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return AVERROR(EINVAL);
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}
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if (avctx->channels != 1) {
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av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
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return AVERROR(EINVAL);
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}
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if ((mode = get_mode(avctx)) > 0)
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s->mode = mode;
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else
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s->mode = s->mode != 30 ? 20 : 30;
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WebRtcIlbcfix_InitEncode(&s->encoder, s->mode);
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avctx->block_align = s->encoder.no_of_bytes;
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avctx->frame_size = s->encoder.blockl;
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return 0;
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}
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static int ilbc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
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const AVFrame *frame, int *got_packet_ptr)
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{
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ILBCEncContext *s = avctx->priv_data;
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int ret;
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if ((ret = ff_alloc_packet2(avctx, avpkt, 50)) < 0)
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return ret;
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WebRtcIlbcfix_EncodeImpl((WebRtc_UWord16*) avpkt->data, (const WebRtc_Word16*) frame->data[0], &s->encoder);
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avpkt->size = s->encoder.no_of_bytes;
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*got_packet_ptr = 1;
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return 0;
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}
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static const AVCodecDefault ilbc_encode_defaults[] = {
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{ "b", "0" },
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{ NULL }
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};
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AVCodec ff_libilbc_encoder = {
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.name = "libilbc",
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.long_name = NULL_IF_CONFIG_SMALL("iLBC (Internet Low Bitrate Codec)"),
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.type = AVMEDIA_TYPE_AUDIO,
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.id = AV_CODEC_ID_ILBC,
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.priv_data_size = sizeof(ILBCEncContext),
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.init = ilbc_encode_init,
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.encode2 = ilbc_encode_frame,
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.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
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AV_SAMPLE_FMT_NONE },
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.defaults = ilbc_encode_defaults,
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.priv_class = &ilbc_enc_class,
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};
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