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Diffstat (limited to 'ffmpeg/libavcodec/libtwolame.c')
-rw-r--r--ffmpeg/libavcodec/libtwolame.c198
1 files changed, 0 insertions, 198 deletions
diff --git a/ffmpeg/libavcodec/libtwolame.c b/ffmpeg/libavcodec/libtwolame.c
deleted file mode 100644
index dc4efe5..0000000
--- a/ffmpeg/libavcodec/libtwolame.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Interface to libtwolame for mp2 encoding
- * Copyright (c) 2012 Paul B Mahol
- *
- * 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
- */
-
-/**
- * @file
- * Interface to libtwolame for mp2 encoding.
- */
-
-#include <twolame.h>
-
-#include "libavutil/opt.h"
-#include "avcodec.h"
-#include "internal.h"
-#include "mpegaudio.h"
-
-typedef struct TWOLAMEContext {
- AVClass *class;
- int mode;
- int psymodel;
- int energy;
- int error_protection;
- int copyright;
- int original;
-
- twolame_options *glopts;
- int64_t next_pts;
-} TWOLAMEContext;
-
-static av_cold int twolame_encode_close(AVCodecContext *avctx)
-{
- TWOLAMEContext *s = avctx->priv_data;
- twolame_close(&s->glopts);
- return 0;
-}
-
-static av_cold int twolame_encode_init(AVCodecContext *avctx)
-{
- TWOLAMEContext *s = avctx->priv_data;
- int ret;
-
- avctx->frame_size = TWOLAME_SAMPLES_PER_FRAME;
-
- s->glopts = twolame_init();
- if (!s->glopts)
- return AVERROR(ENOMEM);
-
- twolame_set_verbosity(s->glopts, 0);
- twolame_set_mode(s->glopts, s->mode);
- twolame_set_psymodel(s->glopts, s->psymodel);
- twolame_set_energy_levels(s->glopts, s->energy);
- twolame_set_error_protection(s->glopts, s->error_protection);
- twolame_set_copyright(s->glopts, s->copyright);
- twolame_set_original(s->glopts, s->original);
-
- twolame_set_num_channels(s->glopts, avctx->channels);
- twolame_set_in_samplerate(s->glopts, avctx->sample_rate);
- twolame_set_out_samplerate(s->glopts, avctx->sample_rate);
- if (avctx->flags & CODEC_FLAG_QSCALE || !avctx->bit_rate) {
- twolame_set_VBR(s->glopts, TRUE);
- twolame_set_VBR_level(s->glopts, avctx->global_quality);
- av_log(avctx, AV_LOG_WARNING, "VBR mode is experimental!\n");
- } else {
- twolame_set_bitrate(s->glopts, avctx->bit_rate / 1000);
- }
-
- if ((ret = twolame_init_params(s->glopts)))
- goto error;
-
- return 0;
-error:
- twolame_encode_close(avctx);
- return ret;
-}
-
-static int twolame_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
- const AVFrame *frame, int *got_packet_ptr)
-{
- TWOLAMEContext *s = avctx->priv_data;
- int ret;
-
- if ((ret = ff_alloc_packet2(avctx, avpkt, MPA_MAX_CODED_FRAME_SIZE)) < 0)
- return ret;
-
- if (frame) {
- switch (avctx->sample_fmt) {
- case AV_SAMPLE_FMT_FLT:
- ret = twolame_encode_buffer_float32_interleaved(s->glopts,
- frame->data[0],
- frame->nb_samples,
- avpkt->data, avpkt->size);
- break;
- case AV_SAMPLE_FMT_FLTP:
- ret = twolame_encode_buffer_float32(s->glopts,
- frame->data[0], frame->data[1],
- frame->nb_samples,
- avpkt->data, avpkt->size);
- break;
- case AV_SAMPLE_FMT_S16:
- ret = twolame_encode_buffer_interleaved(s->glopts,
- frame->data[0],
- frame->nb_samples,
- avpkt->data, avpkt->size);
- break;
- case AV_SAMPLE_FMT_S16P:
- ret = twolame_encode_buffer(s->glopts,
- frame->data[0], frame->data[1],
- frame->nb_samples,
- avpkt->data, avpkt->size);
- break;
- default:
- return AVERROR_BUG;
- }
- } else {
- ret = twolame_encode_flush(s->glopts, avpkt->data, avpkt->size);
- }
-
- if (ret > 0) {
- avpkt->duration = ff_samples_to_time_base(avctx, avctx->frame_size);
- if (frame) {
- if (frame->pts != AV_NOPTS_VALUE)
- avpkt->pts = frame->pts;
- } else {
- avpkt->pts = s->next_pts;
- }
- if (avpkt->pts != AV_NOPTS_VALUE)
- s->next_pts = avpkt->pts + avpkt->duration;
-
- avpkt->size = ret;
- *got_packet_ptr = 1;
- return 0;
- }
-
- return ret;
-}
-
-#define OFFSET(x) offsetof(TWOLAMEContext, x)
-#define AE AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
-static const AVOption options[] = {
- { "mode", "Mpeg Mode", OFFSET(mode), AV_OPT_TYPE_INT, { .i64 = TWOLAME_AUTO_MODE }, TWOLAME_AUTO_MODE, TWOLAME_MONO, AE, "mode"},
- { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TWOLAME_AUTO_MODE }, 0, 0, AE, "mode" },
- { "stereo", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TWOLAME_STEREO }, 0, 0, AE, "mode" },
- { "joint_stereo", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TWOLAME_JOINT_STEREO }, 0, 0, AE, "mode" },
- { "dual_channel", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TWOLAME_DUAL_CHANNEL }, 0, 0, AE, "mode" },
- { "mono", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = TWOLAME_MONO }, 0, 0, AE, "mode" },
- { "psymodel", "Psychoacoustic Model", OFFSET(psymodel), AV_OPT_TYPE_INT, { .i64 = 3 }, -1, 4, AE},
- { "energy_levels","enable energy levels", OFFSET(energy), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AE},
- { "error_protection","enable CRC error protection", OFFSET(error_protection), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AE},
- { "copyright", "set MPEG Audio Copyright flag", OFFSET(copyright), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AE},
- { "original", "set MPEG Audio Original flag", OFFSET(original), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AE},
- { NULL },
-};
-
-static const AVClass libtwolame_class = {
- .class_name = "libtwolame encoder",
- .item_name = av_default_item_name,
- .option = options,
- .version = LIBAVUTIL_VERSION_INT,
-};
-
-AVCodec ff_libtwolame_encoder = {
- .name = "libtwolame",
- .long_name = NULL_IF_CONFIG_SMALL("libtwolame MP2 (MPEG audio layer 2)"),
- .type = AVMEDIA_TYPE_AUDIO,
- .id = AV_CODEC_ID_MP2,
- .priv_data_size = sizeof(TWOLAMEContext),
- .init = twolame_encode_init,
- .encode2 = twolame_encode_frame,
- .close = twolame_encode_close,
- .capabilities = CODEC_CAP_DELAY,
- .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLT,
- AV_SAMPLE_FMT_FLTP,
- AV_SAMPLE_FMT_S16,
- AV_SAMPLE_FMT_S16P,
- AV_SAMPLE_FMT_NONE },
- .channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_MONO,
- AV_CH_LAYOUT_STEREO,
- 0 },
- .supported_samplerates = (const int[]){ 16000, 22050, 24000, 32000, 44100, 48000, 0 },
- .priv_class = &libtwolame_class,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 10:11:52 +0000