diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2014-02-26 16:13:50 +0400 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2014-02-26 16:21:29 +0400 |
commit | 8f946ac8ea108b8865cc5bd16af3ab063f8003ba (patch) | |
tree | 09755c60bab62bae703191f7876a30f550be7d8d /libavfilter | |
parent | c62d83a5e7ddd8664cb26b3f1b7b5cafaa62f463 (diff) |
avfilter: remove af_compand_fork
All relevant changes except the float/double one have been merged
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavfilter')
-rw-r--r-- | libavfilter/Makefile | 1 | ||||
-rw-r--r-- | libavfilter/af_compand_fork.c | 586 | ||||
-rw-r--r-- | libavfilter/allfilters.c | 1 |
3 files changed, 0 insertions, 588 deletions
diff --git a/libavfilter/Makefile b/libavfilter/Makefile index b3bc27c0d0..c36b67ec5a 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -88,7 +88,6 @@ OBJS-$(CONFIG_BIQUAD_FILTER) += af_biquads.o OBJS-$(CONFIG_CHANNELMAP_FILTER) += af_channelmap.o OBJS-$(CONFIG_CHANNELSPLIT_FILTER) += af_channelsplit.o OBJS-$(CONFIG_COMPAND_FILTER) += af_compand.o -OBJS-$(CONFIG_COMPAND_FORK_FILTER) += af_compand_fork.o OBJS-$(CONFIG_EARWAX_FILTER) += af_earwax.o OBJS-$(CONFIG_EBUR128_FILTER) += f_ebur128.o OBJS-$(CONFIG_EQUALIZER_FILTER) += af_biquads.o diff --git a/libavfilter/af_compand_fork.c b/libavfilter/af_compand_fork.c deleted file mode 100644 index ae366e6f41..0000000000 --- a/libavfilter/af_compand_fork.c +++ /dev/null @@ -1,586 +0,0 @@ -/* - * Copyright (c) 1999 Chris Bagwell - * Copyright (c) 1999 Nick Bailey - * Copyright (c) 2007 Rob Sykes <robs@users.sourceforge.net> - * Copyright (c) 2013 Paul B Mahol - * Copyright (c) 2014 Andrew Kelley - * - * 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 - * audio compand filter - */ - -#include "libavutil/avstring.h" -#include "libavutil/channel_layout.h" -#include "libavutil/common.h" -#include "libavutil/mathematics.h" -#include "libavutil/mem.h" -#include "libavutil/opt.h" -#include "audio.h" -#include "avfilter.h" -#include "formats.h" -#include "internal.h" - -typedef struct ChanParam { - float attack; - float decay; - float volume; -} ChanParam; - -typedef struct CompandSegment { - float x, y; - float a, b; -} CompandSegment; - -typedef struct CompandContext { - const AVClass *class; - int nb_channels; - int nb_segments; - char *attacks, *decays, *points; - CompandSegment *segments; - ChanParam *channels; - float in_min_lin; - float out_min_lin; - double curve_dB; - double gain_dB; - double initial_volume; - double delay; - AVFrame *delay_frame; - int delay_samples; - int delay_count; - int delay_index; - int64_t pts; - - int (*compand)(AVFilterContext *ctx, AVFrame *frame); -} CompandContext; - -#define OFFSET(x) offsetof(CompandContext, x) -#define A AV_OPT_FLAG_AUDIO_PARAM - -static const AVOption compand_options[] = { - { "attacks", "set time over which increase of volume is determined", OFFSET(attacks), AV_OPT_TYPE_STRING, { .str = "0.3" }, 0, 0, A }, - { "decays", "set time over which decrease of volume is determined", OFFSET(decays), AV_OPT_TYPE_STRING, { .str = "0.8" }, 0, 0, A }, - { "points", "set points of transfer function", OFFSET(points), AV_OPT_TYPE_STRING, { .str = "-70/-70|-60/-20" }, 0, 0, A }, - { "soft-knee", "set soft-knee", OFFSET(curve_dB), AV_OPT_TYPE_DOUBLE, { .dbl = 0.01 }, 0.01, 900, A }, - { "gain", "set output gain", OFFSET(gain_dB), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, -900, 900, A }, - { "volume", "set initial volume", OFFSET(initial_volume), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, -900, 0, A }, - { "delay", "set delay for samples before sending them to volume adjuster", OFFSET(delay), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0, 20, A }, - { NULL } -}; - -static const AVClass compand_class = { - .class_name = "compand filter", - .item_name = av_default_item_name, - .option = compand_options, - .version = LIBAVUTIL_VERSION_INT, -}; - -static av_cold int init(AVFilterContext *ctx) -{ - CompandContext *s = ctx->priv; - s->pts = AV_NOPTS_VALUE; - return 0; -} - -static av_cold void uninit(AVFilterContext *ctx) -{ - CompandContext *s = ctx->priv; - - av_freep(&s->channels); - av_freep(&s->segments); - av_frame_free(&s->delay_frame); -} - -static int query_formats(AVFilterContext *ctx) -{ - AVFilterChannelLayouts *layouts; - AVFilterFormats *formats; - static const enum AVSampleFormat sample_fmts[] = { - AV_SAMPLE_FMT_FLTP, - AV_SAMPLE_FMT_NONE - }; - - layouts = ff_all_channel_layouts(); - if (!layouts) - return AVERROR(ENOMEM); - ff_set_common_channel_layouts(ctx, layouts); - - formats = ff_make_format_list(sample_fmts); - if (!formats) - return AVERROR(ENOMEM); - ff_set_common_formats(ctx, formats); - - formats = ff_all_samplerates(); - if (!formats) - return AVERROR(ENOMEM); - ff_set_common_samplerates(ctx, formats); - - return 0; -} - -static void count_items(char *item_str, int *nb_items) -{ - char *p; - - *nb_items = 1; - for (p = item_str; *p; p++) { - if (*p == '|') - (*nb_items)++; - } -} - -static void update_volume(ChanParam *cp, float in) -{ - float delta = in - cp->volume; - - if (delta > 0.0) - cp->volume += delta * cp->attack; - else - cp->volume += delta * cp->decay; -} - -static float get_volume(CompandContext *s, float in_lin) -{ - CompandSegment *cs; - float in_log, out_log; - int i; - - if (in_lin < s->in_min_lin) - return s->out_min_lin; - - in_log = logf(in_lin); - - for (i = 1; i < s->nb_segments; i++) - if (in_log <= s->segments[i].x) - break; - cs = &s->segments[i - 1]; - in_log -= cs->x; - out_log = cs->y + in_log * (cs->a * in_log + cs->b); - - return expf(out_log); -} - -static int compand_nodelay(AVFilterContext *ctx, AVFrame *frame) -{ - CompandContext *s = ctx->priv; - AVFilterLink *inlink = ctx->inputs[0]; - const int channels = s->nb_channels; - const int nb_samples = frame->nb_samples; - AVFrame *out_frame; - int chan, i; - int err; - - if (av_frame_is_writable(frame)) { - out_frame = frame; - } else { - out_frame = ff_get_audio_buffer(inlink, nb_samples); - if (!out_frame) { - av_frame_free(&frame); - return AVERROR(ENOMEM); - } - err = av_frame_copy_props(out_frame, frame); - if (err < 0) { - av_frame_free(&out_frame); - av_frame_free(&frame); - return err; - } - } - - for (chan = 0; chan < channels; chan++) { - const float *src = (float *)frame->extended_data[chan]; - float *dst = (float *)out_frame->extended_data[chan]; - ChanParam *cp = &s->channels[chan]; - - for (i = 0; i < nb_samples; i++) { - update_volume(cp, fabs(src[i])); - - dst[i] = av_clipf(src[i] * get_volume(s, cp->volume), -1.0f, 1.0f); - } - } - - if (frame != out_frame) - av_frame_free(&frame); - - return ff_filter_frame(ctx->outputs[0], out_frame); -} - -#define MOD(a, b) (((a) >= (b)) ? (a) - (b) : (a)) - -static int compand_delay(AVFilterContext *ctx, AVFrame *frame) -{ - CompandContext *s = ctx->priv; - AVFilterLink *inlink = ctx->inputs[0]; - const int channels = s->nb_channels; - const int nb_samples = frame->nb_samples; - int chan, i, dindex = 0, oindex, count = 0; - AVFrame *out_frame = NULL; - int err; - - if (s->pts == AV_NOPTS_VALUE) { - s->pts = (frame->pts == AV_NOPTS_VALUE) ? 0 : frame->pts; - } - - for (chan = 0; chan < channels; chan++) { - AVFrame *delay_frame = s->delay_frame; - const float *src = (float *)frame->extended_data[chan]; - float *dbuf = (float *)delay_frame->extended_data[chan]; - ChanParam *cp = &s->channels[chan]; - float *dst; - - count = s->delay_count; - dindex = s->delay_index; - for (i = 0, oindex = 0; i < nb_samples; i++) { - const float in = src[i]; - update_volume(cp, fabs(in)); - - if (count >= s->delay_samples) { - if (!out_frame) { - out_frame = ff_get_audio_buffer(inlink, nb_samples - i); - if (!out_frame) { - av_frame_free(&frame); - return AVERROR(ENOMEM); - } - err = av_frame_copy_props(out_frame, frame); - if (err < 0) { - av_frame_free(&out_frame); - av_frame_free(&frame); - return err; - } - out_frame->pts = s->pts; - s->pts += av_rescale_q(nb_samples - i, - (AVRational){ 1, inlink->sample_rate }, - inlink->time_base); - } - - dst = (float *)out_frame->extended_data[chan]; - dst[oindex++] = av_clipf(dbuf[dindex] * - get_volume(s, cp->volume), -1.0f, 1.0f); - } else { - count++; - } - - dbuf[dindex] = in; - dindex = MOD(dindex + 1, s->delay_samples); - } - } - - s->delay_count = count; - s->delay_index = dindex; - - av_frame_free(&frame); - return out_frame ? ff_filter_frame(ctx->outputs[0], out_frame) : 0; -} - -static int compand_drain(AVFilterLink *outlink) -{ - AVFilterContext *ctx = outlink->src; - CompandContext *s = ctx->priv; - const int channels = s->nb_channels; - AVFrame *frame = NULL; - int chan, i, dindex; - - /* 2048 is to limit output frame size during drain */ - frame = ff_get_audio_buffer(outlink, FFMIN(2048, s->delay_count)); - if (!frame) - return AVERROR(ENOMEM); - frame->pts = s->pts; - s->pts += av_rescale_q(frame->nb_samples, - (AVRational){ 1, outlink->sample_rate }, outlink->time_base); - - for (chan = 0; chan < channels; chan++) { - AVFrame *delay_frame = s->delay_frame; - float *dbuf = (float *)delay_frame->extended_data[chan]; - float *dst = (float *)frame->extended_data[chan]; - ChanParam *cp = &s->channels[chan]; - - dindex = s->delay_index; - for (i = 0; i < frame->nb_samples; i++) { - dst[i] = av_clipf(dbuf[dindex] * get_volume(s, cp->volume), - -1.0f, 1.0f); - dindex = MOD(dindex + 1, s->delay_samples); - } - } - s->delay_count -= frame->nb_samples; - s->delay_index = dindex; - - return ff_filter_frame(outlink, frame); -} - -static int config_output(AVFilterLink *outlink) -{ - AVFilterContext *ctx = outlink->src; - CompandContext *s = ctx->priv; - const int sample_rate = outlink->sample_rate; - double radius = s->curve_dB * M_LN10 / 20.0; - char *p, *saveptr = NULL; - const int channels = - av_get_channel_layout_nb_channels(outlink->channel_layout); - int nb_attacks, nb_decays, nb_points; - int new_nb_items, num; - int i; - int err; - - - count_items(s->attacks, &nb_attacks); - count_items(s->decays, &nb_decays); - count_items(s->points, &nb_points); - - if (channels <= 0) { - av_log(ctx, AV_LOG_ERROR, "Invalid number of channels: %d\n", channels); - return AVERROR(EINVAL); - } - - if (nb_attacks > channels || nb_decays > channels) { - av_log(ctx, AV_LOG_ERROR, - "Number of attacks/decays bigger than number of channels.\n"); - return AVERROR(EINVAL); - } - - uninit(ctx); - - s->nb_channels = channels; - s->channels = av_mallocz_array(channels, sizeof(*s->channels)); - s->nb_segments = (nb_points + 4) * 2; - s->segments = av_mallocz_array(s->nb_segments, sizeof(*s->segments)); - - if (!s->channels || !s->segments) { - uninit(ctx); - return AVERROR(ENOMEM); - } - - p = s->attacks; - for (i = 0, new_nb_items = 0; i < nb_attacks; i++) { - char *tstr = av_strtok(p, "|", &saveptr); - p = NULL; - new_nb_items += sscanf(tstr, "%f", &s->channels[i].attack) == 1; - if (s->channels[i].attack < 0) { - uninit(ctx); - return AVERROR(EINVAL); - } - } - nb_attacks = new_nb_items; - - p = s->decays; - for (i = 0, new_nb_items = 0; i < nb_decays; i++) { - char *tstr = av_strtok(p, "|", &saveptr); - p = NULL; - new_nb_items += sscanf(tstr, "%f", &s->channels[i].decay) == 1; - if (s->channels[i].decay < 0) { - uninit(ctx); - return AVERROR(EINVAL); - } - } - nb_decays = new_nb_items; - - if (nb_attacks != nb_decays) { - av_log(ctx, AV_LOG_ERROR, - "Number of attacks %d differs from number of decays %d.\n", - nb_attacks, nb_decays); - uninit(ctx); - return AVERROR(EINVAL); - } - -#define S(x) s->segments[2 * ((x) + 1)] - p = s->points; - for (i = 0, new_nb_items = 0; i < nb_points; i++) { - char *tstr = av_strtok(p, "|", &saveptr); - p = NULL; - if (sscanf(tstr, "%f/%f", &S(i).x, &S(i).y) != 2) { - av_log(ctx, AV_LOG_ERROR, - "Invalid and/or missing input/output value.\n"); - uninit(ctx); - return AVERROR(EINVAL); - } - if (i && S(i - 1).x > S(i).x) { - av_log(ctx, AV_LOG_ERROR, - "Transfer function input values must be increasing.\n"); - uninit(ctx); - return AVERROR(EINVAL); - } - S(i).y -= S(i).x; - av_log(ctx, AV_LOG_DEBUG, "%d: x=%f y=%f\n", i, S(i).x, S(i).y); - new_nb_items++; - } - num = new_nb_items; - - /* Add 0,0 if necessary */ - if (num == 0 || S(num - 1).x) - num++; - -#undef S -#define S(x) s->segments[2 * (x)] - /* Add a tail off segment at the start */ - S(0).x = S(1).x - 2 * s->curve_dB; - S(0).y = S(1).y; - num++; - - /* Join adjacent colinear segments */ - for (i = 2; i < num; i++) { - double g1 = (S(i - 1).y - S(i - 2).y) * (S(i - 0).x - S(i - 1).x); - double g2 = (S(i - 0).y - S(i - 1).y) * (S(i - 1).x - S(i - 2).x); - int j; - - /* here we purposefully lose precision so that we can compare floats */ - if (fabs(g1 - g2)) - continue; - num--; - for (j = --i; j < num; j++) - S(j) = S(j + 1); - } - - for (i = 0; !i || s->segments[i - 2].x; i += 2) { - s->segments[i].y += s->gain_dB; - s->segments[i].x *= M_LN10 / 20; - s->segments[i].y *= M_LN10 / 20; - } - -#define L(x) s->segments[i - (x)] - for (i = 4; s->segments[i - 2].x; i += 2) { - double x, y, cx, cy, in1, in2, out1, out2, theta, len, r; - - L(4).a = 0; - L(4).b = (L(2).y - L(4).y) / (L(2).x - L(4).x); - - L(2).a = 0; - L(2).b = (L(0).y - L(2).y) / (L(0).x - L(2).x); - - theta = atan2(L(2).y - L(4).y, L(2).x - L(4).x); - len = sqrt(pow(L(2).x - L(4).x, 2.) + pow(L(2).y - L(4).y, 2.)); - r = FFMIN(radius, len); - L(3).x = L(2).x - r * cos(theta); - L(3).y = L(2).y - r * sin(theta); - - theta = atan2(L(0).y - L(2).y, L(0).x - L(2).x); - len = sqrt(pow(L(0).x - L(2).x, 2.) + pow(L(0).y - L(2).y, 2.)); - r = FFMIN(radius, len / 2); - x = L(2).x + r * cos(theta); - y = L(2).y + r * sin(theta); - - cx = (L(3).x + L(2).x + x) / 3; - cy = (L(3).y + L(2).y + y) / 3; - - L(2).x = x; - L(2).y = y; - - in1 = cx - L(3).x; - out1 = cy - L(3).y; - in2 = L(2).x - L(3).x; - out2 = L(2).y - L(3).y; - L(3).a = (out2 / in2 - out1 / in1) / (in2 - in1); - L(3).b = out1 / in1 - L(3).a * in1; - } - L(3).x = 0; - L(3).y = L(2).y; - - s->in_min_lin = exp(s->segments[1].x); - s->out_min_lin = exp(s->segments[1].y); - - for (i = 0; i < channels; i++) { - ChanParam *cp = &s->channels[i]; - - if (cp->attack > 1.0 / sample_rate) - cp->attack = 1.0 - exp(-1.0 / (sample_rate * cp->attack)); - else - cp->attack = 1.0; - if (cp->decay > 1.0 / sample_rate) - cp->decay = 1.0 - exp(-1.0 / (sample_rate * cp->decay)); - else - cp->decay = 1.0; - cp->volume = pow(10.0, s->initial_volume / 20); - } - - s->delay_samples = s->delay * sample_rate; - if (s->delay_samples <= 0) { - s->compand = compand_nodelay; - return 0; - } - - s->delay_frame = av_frame_alloc(); - if (!s->delay_frame) { - uninit(ctx); - return AVERROR(ENOMEM); - } - - s->delay_frame->format = outlink->format; - s->delay_frame->nb_samples = s->delay_samples; - s->delay_frame->channel_layout = outlink->channel_layout; - - err = av_frame_get_buffer(s->delay_frame, 32); - if (err) - return err; - - s->compand = compand_delay; - return 0; -} - -static int filter_frame(AVFilterLink *inlink, AVFrame *frame) -{ - AVFilterContext *ctx = inlink->dst; - CompandContext *s = ctx->priv; - - return s->compand(ctx, frame); -} - -static int request_frame(AVFilterLink *outlink) -{ - AVFilterContext *ctx = outlink->src; - CompandContext *s = ctx->priv; - int ret; - - ret = ff_request_frame(ctx->inputs[0]); - - if (ret == AVERROR_EOF && s->delay_count) - ret = compand_drain(outlink); - - return ret; -} - -static const AVFilterPad compand_inputs[] = { - { - .name = "default", - .type = AVMEDIA_TYPE_AUDIO, - .filter_frame = filter_frame, - }, - { NULL } -}; - -static const AVFilterPad compand_outputs[] = { - { - .name = "default", - .request_frame = request_frame, - .config_props = config_output, - .type = AVMEDIA_TYPE_AUDIO, - }, - { NULL } -}; - - -AVFilter ff_af_compand_fork = { - .name = "compand_fork", - .description = NULL_IF_CONFIG_SMALL( - "Compress or expand audio dynamic range."), - .query_formats = query_formats, - .priv_size = sizeof(CompandContext), - .priv_class = &compand_class, - .init = init, - .uninit = uninit, - .inputs = compand_inputs, - .outputs = compand_outputs, -}; diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index d9a9975323..d042b64ce3 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -83,7 +83,6 @@ void avfilter_register_all(void) REGISTER_FILTER(CHANNELMAP, channelmap, af); REGISTER_FILTER(CHANNELSPLIT, channelsplit, af); REGISTER_FILTER(COMPAND, compand, af); - REGISTER_FILTER(COMPAND_FORK, compand_fork, af); REGISTER_FILTER(EARWAX, earwax, af); REGISTER_FILTER(EBUR128, ebur128, af); REGISTER_FILTER(EQUALIZER, equalizer, af); |