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-rw-r--r--audio/filter/af_pan.c206
1 files changed, 0 insertions, 206 deletions
diff --git a/audio/filter/af_pan.c b/audio/filter/af_pan.c
deleted file mode 100644
index b2233a7191..0000000000
--- a/audio/filter/af_pan.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * Copyright (C) 2002 Anders Johansson ajh@atri.curtin.edu.au
- *
- * This file is part of mpv.
- *
- * mpv is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * mpv 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with mpv. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <inttypes.h>
-#include <math.h>
-#include <limits.h>
-
-#include "common/common.h"
-#include "af.h"
-
-// Data for specific instances of this filter
-typedef struct af_pan_s {
- int nch; // Number of output channels; zero means same as input
- float level[AF_NCH][AF_NCH]; // Gain level for each channel
- char *matrixstr;
-} af_pan_t;
-
-static void set_channels(struct mp_audio *mpa, int num)
-{
- struct mp_chmap map;
- // "unknown" channel layouts make it easier to pass through audio data,
- // without triggering remixing.
- mp_chmap_set_unknown(&map, num);
- mp_audio_set_channels(mpa, &map);
-}
-
-static void parse_matrix(struct af_instance *af, const char *cp)
-{
- af_pan_t *s = af->priv;
- int j = 0, k = 0, n;
- while (*cp && k < AF_NCH) {
- sscanf(cp, "%f%n" , &s->level[j][k], &n);
- MP_VERBOSE(af, "Pan level from channel %i to"
- " channel %i = %f\n", k, j, s->level[j][k]);
- cp = &cp[n];
- j++;
- if (j >= s->nch) {
- j = 0;
- k++;
- }
- if (*cp != ',')
- break;
- cp++;
- }
-
-}
-
-// Initialization and runtime control
-static int control(struct af_instance *af, int cmd, void *arg)
-{
- af_pan_t* s = af->priv;
-
- switch(cmd){
- case AF_CONTROL_REINIT:
- // Sanity check
- if (!arg)
- return AF_ERROR;
-
- af->data->rate = ((struct mp_audio*)arg)->rate;
- mp_audio_set_format(af->data, AF_FORMAT_FLOAT);
- set_channels(af->data, s->nch ? s->nch : ((struct mp_audio*)arg)->nch);
-
- if ((af->data->format != ((struct mp_audio*)arg)->format) ||
- (af->data->bps != ((struct mp_audio*)arg)->bps)) {
- mp_audio_set_format((struct mp_audio*)arg, af->data->format);
- return AF_FALSE;
- }
- return AF_OK;
- case AF_CONTROL_SET_PAN_LEVEL: {
- int i;
- int ch = ((af_control_ext_t*)arg)->ch;
- float *level = ((af_control_ext_t*)arg)->arg;
- if (ch >= AF_NCH)
- return AF_FALSE;
- for (i = 0; i < AF_NCH; i++)
- s->level[ch][i] = level[i];
- return AF_OK;
- }
- case AF_CONTROL_SET_PAN_NOUT:
- // Reinit must be called after this function has been called
- // Sanity check
- if (((int*)arg)[0] <= 0 || ((int*)arg)[0] > AF_NCH) {
- MP_ERR(af, "The number of output channels must be"
- " between 1 and %i. Current value is %i\n",
- AF_NCH, ((int*)arg)[0]);
- return AF_ERROR;
- }
- s->nch = ((int*)arg)[0];
- return AF_OK;
- case AF_CONTROL_SET_PAN_BALANCE: {
- float val = *(float*)arg;
- if (s->nch)
- return AF_ERROR;
- if (af->data->nch >= 2) {
- s->level[0][0] = MPMIN(1.f, 1.f - val);
- s->level[0][1] = MPMAX(0.f, val);
- s->level[1][0] = MPMAX(0.f, -val);
- s->level[1][1] = MPMIN(1.f, 1.f + val);
- }
- return AF_OK;
- }
- case AF_CONTROL_GET_PAN_BALANCE:
- if (s->nch)
- return AF_ERROR;
- *(float*)arg = s->level[0][1] - s->level[1][0];
- return AF_OK;
- case AF_CONTROL_COMMAND: {
- char **args = arg;
- if (!strcmp(args[0], "set-matrix")) {
- parse_matrix(af, args[1]);
- return CONTROL_OK;
- } else {
- return CONTROL_ERROR;
- }
- }
- }
- return AF_UNKNOWN;
-}
-
-static int filter_frame(struct af_instance *af, struct mp_audio *c)
-{
- if (!c)
- return 0;
- struct mp_audio *l = mp_audio_pool_get(af->out_pool, &af->fmt_out, c->samples);
- if (!l) {
- talloc_free(c);
- return -1;
- }
- mp_audio_copy_attributes(l, c);
-
- af_pan_t* s = af->priv; // Setup for this instance
- float *in = c->planes[0]; // Input audio data
- float *out = NULL; // Output audio data
- float *end = in+c->samples * c->nch; // End of loop
- int nchi = c->nch; // Number of input channels
- int ncho = l->nch; // Number of output channels
- register int j, k;
-
- out = l->planes[0];
- // Execute panning
- // FIXME: Too slow
- while (in < end) {
- for (j = 0; j < ncho; j++) {
- register float x = 0.0;
- register float *tin = in;
- for (k = 0; k < nchi; k++)
- x += tin[k] * s->level[j][k];
- out[j] = x;
- }
- out += ncho;
- in += nchi;
- }
-
- talloc_free(c);
- af_add_output_frame(af, l);
- return 0;
-}
-
-// Allocate memory and set function pointers
-static int af_open(struct af_instance *af)
-{
- af->control = control;
- af->filter_frame = filter_frame;
- MP_WARN(af, "This filter is deprecated. Use lavfi pan instead.\n");
- af_pan_t *s = af->priv;
- int nch = s->nch;
- if (nch && AF_OK != control(af, AF_CONTROL_SET_PAN_NOUT, &nch))
- return AF_ERROR;
-
- // Read pan values
- if (s->matrixstr)
- parse_matrix(af, s->matrixstr);
- return AF_OK;
-}
-
-#define OPT_BASE_STRUCT af_pan_t
-const struct af_info af_info_pan = {
- .info = "Panning audio filter",
- .name = "pan",
- .open = af_open,
- .priv_size = sizeof(af_pan_t),
- .options = (const struct m_option[]) {
- OPT_INTRANGE("channels", nch, 0, 0, AF_NCH),
- OPT_STRING("matrix", matrixstr, 0),
- {0}
- },
-};
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