diff options
Diffstat (limited to 'ffmpeg/libavcodec/libvo-amrwbenc.c')
| -rw-r--r-- | ffmpeg/libavcodec/libvo-amrwbenc.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/ffmpeg/libavcodec/libvo-amrwbenc.c b/ffmpeg/libavcodec/libvo-amrwbenc.c deleted file mode 100644 index 4216a41..0000000 --- a/ffmpeg/libavcodec/libvo-amrwbenc.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * AMR Audio encoder stub - * Copyright (c) 2003 the ffmpeg project - * - * 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 <vo-amrwbenc/enc_if.h> -#include <stdio.h> -#include <stdlib.h> - -#include "libavutil/avstring.h" -#include "libavutil/internal.h" -#include "libavutil/mem.h" -#include "libavutil/opt.h" -#include "avcodec.h" -#include "internal.h" - -#define MAX_PACKET_SIZE (1 + (477 + 7) / 8) - -typedef struct AMRWBContext { - AVClass *av_class; - void *state; - int mode; - int last_bitrate; - int allow_dtx; -} AMRWBContext; - -static const AVOption options[] = { - { "dtx", "Allow DTX (generate comfort noise)", offsetof(AMRWBContext, allow_dtx), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, - { NULL } -}; - -static const AVClass amrwb_class = { - "libvo_amrwbenc", av_default_item_name, options, LIBAVUTIL_VERSION_INT -}; - -static int get_wb_bitrate_mode(int bitrate, void *log_ctx) -{ - /* make the correspondance between bitrate and mode */ - static const int rates[] = { 6600, 8850, 12650, 14250, 15850, 18250, - 19850, 23050, 23850 }; - int i, best = -1, min_diff = 0; - char log_buf[200]; - - for (i = 0; i < 9; i++) { - if (rates[i] == bitrate) - return i; - if (best < 0 || abs(rates[i] - bitrate) < min_diff) { - best = i; - min_diff = abs(rates[i] - bitrate); - } - } - /* no bitrate matching exactly, log a warning */ - snprintf(log_buf, sizeof(log_buf), "bitrate not supported: use one of "); - for (i = 0; i < 9; i++) - av_strlcatf(log_buf, sizeof(log_buf), "%.2fk, ", rates[i] / 1000.f); - av_strlcatf(log_buf, sizeof(log_buf), "using %.2fk", rates[best] / 1000.f); - av_log(log_ctx, AV_LOG_WARNING, "%s\n", log_buf); - - return best; -} - -static av_cold int amr_wb_encode_init(AVCodecContext *avctx) -{ - AMRWBContext *s = avctx->priv_data; - - if (avctx->sample_rate != 16000 && avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) { - av_log(avctx, AV_LOG_ERROR, "Only 16000Hz sample rate supported\n"); - return AVERROR(ENOSYS); - } - - if (avctx->channels != 1) { - av_log(avctx, AV_LOG_ERROR, "Only mono supported\n"); - return AVERROR(ENOSYS); - } - - s->mode = get_wb_bitrate_mode(avctx->bit_rate, avctx); - s->last_bitrate = avctx->bit_rate; - - avctx->frame_size = 320; - avctx->delay = 80; - - s->state = E_IF_init(); - - return 0; -} - -static int amr_wb_encode_close(AVCodecContext *avctx) -{ - AMRWBContext *s = avctx->priv_data; - - E_IF_exit(s->state); - return 0; -} - -static int amr_wb_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr) -{ - AMRWBContext *s = avctx->priv_data; - const int16_t *samples = (const int16_t *)frame->data[0]; - int size, ret; - - if ((ret = ff_alloc_packet2(avctx, avpkt, MAX_PACKET_SIZE)) < 0) - return ret; - - if (s->last_bitrate != avctx->bit_rate) { - s->mode = get_wb_bitrate_mode(avctx->bit_rate, avctx); - s->last_bitrate = avctx->bit_rate; - } - size = E_IF_encode(s->state, s->mode, samples, avpkt->data, s->allow_dtx); - if (size <= 0 || size > MAX_PACKET_SIZE) { - av_log(avctx, AV_LOG_ERROR, "Error encoding frame\n"); - return AVERROR(EINVAL); - } - - if (frame->pts != AV_NOPTS_VALUE) - avpkt->pts = frame->pts - ff_samples_to_time_base(avctx, avctx->delay); - - avpkt->size = size; - *got_packet_ptr = 1; - return 0; -} - -AVCodec ff_libvo_amrwbenc_encoder = { - .name = "libvo_amrwbenc", - .long_name = NULL_IF_CONFIG_SMALL("Android VisualOn AMR-WB " - "(Adaptive Multi-Rate Wide-Band)"), - .type = AVMEDIA_TYPE_AUDIO, - .id = AV_CODEC_ID_AMR_WB, - .priv_data_size = sizeof(AMRWBContext), - .init = amr_wb_encode_init, - .encode2 = amr_wb_encode_frame, - .close = amr_wb_encode_close, - .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, - AV_SAMPLE_FMT_NONE }, - .priv_class = &amrwb_class, -}; |