mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: James Almer <jamrial@gmail.com>pull/113/head
James Almer
11 years ago
committed by
Paul B Mahol
parent
9ffa705edd
commit
d1c49bcae9
5 changed files with 0 additions and 205 deletions
@ -1,196 +0,0 @@ |
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/*
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* Copyright (c) 2010 S.N. Hemanth Meenakshisundaram <smeenaks@ucsd.edu> |
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* Copyright (c) 2011 Stefano Sabatini |
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* Copyright (c) 2011 Mina Nagy Zaki |
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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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/**
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* @file |
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* sample format and channel layout conversion audio filter |
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*/ |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/opt.h" |
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#include "libswresample/swresample.h" |
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#include "avfilter.h" |
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#include "audio.h" |
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#include "internal.h" |
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typedef struct { |
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const AVClass *class; |
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enum AVSampleFormat out_sample_fmt; |
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int64_t out_chlayout; |
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struct SwrContext *swr; |
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char *format_str; |
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char *channel_layout_str; |
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} AConvertContext; |
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#define OFFSET(x) offsetof(AConvertContext, x) |
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#define A AV_OPT_FLAG_AUDIO_PARAM |
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#define F AV_OPT_FLAG_FILTERING_PARAM |
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static const AVOption aconvert_options[] = { |
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{ "sample_fmt", "", OFFSET(format_str), AV_OPT_TYPE_STRING, .flags = A|F }, |
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{ "channel_layout", "", OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A|F }, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(aconvert); |
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static av_cold int init(AVFilterContext *ctx) |
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{ |
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AConvertContext *aconvert = ctx->priv; |
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int ret = 0; |
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av_log(ctx, AV_LOG_WARNING, "This filter is deprecated, use aformat instead\n"); |
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aconvert->out_sample_fmt = AV_SAMPLE_FMT_NONE; |
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aconvert->out_chlayout = 0; |
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if (aconvert->format_str && strcmp(aconvert->format_str, "auto") && |
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(ret = ff_parse_sample_format(&aconvert->out_sample_fmt, aconvert->format_str, ctx)) < 0) |
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return ret; |
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if (aconvert->channel_layout_str && strcmp(aconvert->channel_layout_str, "auto")) |
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return ff_parse_channel_layout(&aconvert->out_chlayout, NULL, aconvert->channel_layout_str, ctx); |
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return ret; |
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} |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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AConvertContext *aconvert = ctx->priv; |
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swr_free(&aconvert->swr); |
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} |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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AVFilterFormats *formats = NULL; |
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AConvertContext *aconvert = ctx->priv; |
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AVFilterLink *inlink = ctx->inputs[0]; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFilterChannelLayouts *layouts; |
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ff_formats_ref(ff_all_formats(AVMEDIA_TYPE_AUDIO), |
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&inlink->out_formats); |
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if (aconvert->out_sample_fmt != AV_SAMPLE_FMT_NONE) { |
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formats = NULL; |
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ff_add_format(&formats, aconvert->out_sample_fmt); |
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ff_formats_ref(formats, &outlink->in_formats); |
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} else |
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ff_formats_ref(ff_all_formats(AVMEDIA_TYPE_AUDIO), |
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&outlink->in_formats); |
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ff_channel_layouts_ref(ff_all_channel_layouts(), |
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&inlink->out_channel_layouts); |
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if (aconvert->out_chlayout != 0) { |
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layouts = NULL; |
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ff_add_channel_layout(&layouts, aconvert->out_chlayout); |
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ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts); |
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} else |
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ff_channel_layouts_ref(ff_all_channel_layouts(), |
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&outlink->in_channel_layouts); |
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return 0; |
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} |
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static int config_output(AVFilterLink *outlink) |
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{ |
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int ret; |
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AVFilterContext *ctx = outlink->src; |
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AVFilterLink *inlink = ctx->inputs[0]; |
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AConvertContext *aconvert = ctx->priv; |
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char buf1[64], buf2[64]; |
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/* if not specified in args, use the format and layout of the output */ |
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if (aconvert->out_sample_fmt == AV_SAMPLE_FMT_NONE) |
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aconvert->out_sample_fmt = outlink->format; |
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if (aconvert->out_chlayout == 0) |
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aconvert->out_chlayout = outlink->channel_layout; |
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aconvert->swr = swr_alloc_set_opts(aconvert->swr, |
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aconvert->out_chlayout, aconvert->out_sample_fmt, inlink->sample_rate, |
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inlink->channel_layout, inlink->format, inlink->sample_rate, |
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0, ctx); |
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if (!aconvert->swr) |
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return AVERROR(ENOMEM); |
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ret = swr_init(aconvert->swr); |
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if (ret < 0) |
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return ret; |
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av_get_channel_layout_string(buf1, sizeof(buf1), |
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-1, inlink ->channel_layout); |
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av_get_channel_layout_string(buf2, sizeof(buf2), |
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-1, outlink->channel_layout); |
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av_log(ctx, AV_LOG_VERBOSE, |
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"fmt:%s cl:%s -> fmt:%s cl:%s\n", |
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av_get_sample_fmt_name(inlink ->format), buf1, |
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av_get_sample_fmt_name(outlink->format), buf2); |
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return 0; |
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} |
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static int filter_frame(AVFilterLink *inlink, AVFrame *insamplesref) |
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{ |
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AConvertContext *aconvert = inlink->dst->priv; |
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const int n = insamplesref->nb_samples; |
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AVFilterLink *const outlink = inlink->dst->outputs[0]; |
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AVFrame *outsamplesref = ff_get_audio_buffer(outlink, n); |
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int ret; |
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if (!outsamplesref) |
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return AVERROR(ENOMEM); |
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swr_convert(aconvert->swr, outsamplesref->extended_data, n, |
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(void *)insamplesref->extended_data, n); |
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av_frame_copy_props(outsamplesref, insamplesref); |
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av_frame_set_channels(outsamplesref, outlink->channels); |
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outsamplesref->channel_layout = outlink->channel_layout; |
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ret = ff_filter_frame(outlink, outsamplesref); |
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av_frame_free(&insamplesref); |
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return ret; |
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} |
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static const AVFilterPad aconvert_inputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_AUDIO, |
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.filter_frame = filter_frame, |
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}, |
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{ NULL } |
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}; |
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static const AVFilterPad aconvert_outputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_AUDIO, |
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.config_props = config_output, |
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}, |
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{ NULL } |
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}; |
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AVFilter ff_af_aconvert = { |
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.name = "aconvert", |
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.description = NULL_IF_CONFIG_SMALL("Convert the input audio to sample_fmt:channel_layout."), |
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.priv_size = sizeof(AConvertContext), |
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.priv_class = &aconvert_class, |
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.init = init, |
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.uninit = uninit, |
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.query_formats = query_formats, |
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.inputs = aconvert_inputs, |
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.outputs = aconvert_outputs, |
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}; |
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