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Diffstat (limited to 'ffmpeg1/libavcodec/libilbc.c')
-rw-r--r--ffmpeg1/libavcodec/libilbc.c197
1 files changed, 0 insertions, 197 deletions
diff --git a/ffmpeg1/libavcodec/libilbc.c b/ffmpeg1/libavcodec/libilbc.c
deleted file mode 100644
index b4163c6..0000000
--- a/ffmpeg1/libavcodec/libilbc.c
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * iLBC decoder/encoder stub
- * Copyright (c) 2012 Martin Storsjo
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <ilbc.h>
-
-#include "libavutil/channel_layout.h"
-#include "libavutil/common.h"
-#include "libavutil/opt.h"
-#include "avcodec.h"
-#include "internal.h"
-
-static int get_mode(AVCodecContext *avctx)
-{
- if (avctx->block_align == 38)
- return 20;
- else if (avctx->block_align == 50)
- return 30;
- else if (avctx->bit_rate > 0)
- return avctx->bit_rate <= 14000 ? 30 : 20;
- else
- return -1;
-}
-
-typedef struct ILBCDecContext {
- const AVClass *class;
- iLBC_Dec_Inst_t decoder;
- int enhance;
-} ILBCDecContext;
-
-static const AVOption ilbc_dec_options[] = {
- { "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 },
- { NULL }
-};
-
-static const AVClass ilbc_dec_class = {
- .class_name = "libilbc",
- .item_name = av_default_item_name,
- .option = ilbc_dec_options,
- .version = LIBAVUTIL_VERSION_INT,
-};
-
-static av_cold int ilbc_decode_init(AVCodecContext *avctx)
-{
- ILBCDecContext *s = avctx->priv_data;
- int mode;
-
- if ((mode = get_mode(avctx)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "iLBC frame mode not indicated\n");
- return AVERROR(EINVAL);
- }
-
- WebRtcIlbcfix_InitDecode(&s->decoder, mode, s->enhance);
-
- avctx->channels = 1;
- avctx->channel_layout = AV_CH_LAYOUT_MONO;
- avctx->sample_rate = 8000;
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
-
- return 0;
-}
-
-static int ilbc_decode_frame(AVCodecContext *avctx, void *data,
- int *got_frame_ptr, AVPacket *avpkt)
-{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- ILBCDecContext *s = avctx->priv_data;
- AVFrame *frame = data;
- int ret;
-
- if (s->decoder.no_of_bytes > buf_size) {
- av_log(avctx, AV_LOG_ERROR, "iLBC frame too short (%u, should be %u)\n",
- buf_size, s->decoder.no_of_bytes);
- return AVERROR_INVALIDDATA;
- }
-
- frame->nb_samples = s->decoder.blockl;
- if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
- return ret;
-
- WebRtcIlbcfix_DecodeImpl((WebRtc_Word16*) frame->data[0],
- (const WebRtc_UWord16*) buf, &s->decoder, 1);
-
- *got_frame_ptr = 1;
-
- return s->decoder.no_of_bytes;
-}
-
-AVCodec ff_libilbc_decoder = {
- .name = "libilbc",
- .type = AVMEDIA_TYPE_AUDIO,
- .id = AV_CODEC_ID_ILBC,
- .priv_data_size = sizeof(ILBCDecContext),
- .init = ilbc_decode_init,
- .decode = ilbc_decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("iLBC (Internet Low Bitrate Codec)"),
- .priv_class = &ilbc_dec_class,
-};
-
-typedef struct ILBCEncContext {
- const AVClass *class;
- iLBC_Enc_Inst_t encoder;
- int mode;
-} ILBCEncContext;
-
-static const AVOption ilbc_enc_options[] = {
- { "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 },
- { NULL }
-};
-
-static const AVClass ilbc_enc_class = {
- .class_name = "libilbc",
- .item_name = av_default_item_name,
- .option = ilbc_enc_options,
- .version = LIBAVUTIL_VERSION_INT,
-};
-
-static av_cold int ilbc_encode_init(AVCodecContext *avctx)
-{
- ILBCEncContext *s = avctx->priv_data;
- int mode;
-
- if (avctx->sample_rate != 8000) {
- av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n");
- return AVERROR(EINVAL);
- }
-
- if (avctx->channels != 1) {
- av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
- return AVERROR(EINVAL);
- }
-
- if ((mode = get_mode(avctx)) > 0)
- s->mode = mode;
- else
- s->mode = s->mode != 30 ? 20 : 30;
- WebRtcIlbcfix_InitEncode(&s->encoder, s->mode);
-
- avctx->block_align = s->encoder.no_of_bytes;
- avctx->frame_size = s->encoder.blockl;
-
- return 0;
-}
-
-static int ilbc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
- const AVFrame *frame, int *got_packet_ptr)
-{
- ILBCEncContext *s = avctx->priv_data;
- int ret;
-
- if ((ret = ff_alloc_packet2(avctx, avpkt, 50)) < 0)
- return ret;
-
- WebRtcIlbcfix_EncodeImpl((WebRtc_UWord16*) avpkt->data, (const WebRtc_Word16*) frame->data[0], &s->encoder);
-
- avpkt->size = s->encoder.no_of_bytes;
- *got_packet_ptr = 1;
- return 0;
-}
-
-static const AVCodecDefault ilbc_encode_defaults[] = {
- { "b", "0" },
- { NULL }
-};
-
-AVCodec ff_libilbc_encoder = {
- .name = "libilbc",
- .type = AVMEDIA_TYPE_AUDIO,
- .id = AV_CODEC_ID_ILBC,
- .priv_data_size = sizeof(ILBCEncContext),
- .init = ilbc_encode_init,
- .encode2 = ilbc_encode_frame,
- .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
- AV_SAMPLE_FMT_NONE },
- .long_name = NULL_IF_CONFIG_SMALL("iLBC (Internet Low Bitrate Codec)"),
- .defaults = ilbc_encode_defaults,
- .priv_class = &ilbc_enc_class,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 21:10:53 +0000