af: remove deprecated audio filters

These couldn't be relicensed, and won't survive the LGPL transition. The
other existing filters are mostly LGPL (except libaf glue code).

This remove the deprecated pan option. I guess it could be restored by
inserting a libavfilter filter (if there's one), but for now let it be
gone.

This temporarily breaks volume control (and things related to it, like
replaygain).

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}
-    },
-};