mirror of https://github.com/mpv-player/mpv
692 lines
20 KiB
C
692 lines
20 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "af.h"
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// Static list of filters
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extern struct af_info af_info_dummy;
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extern struct af_info af_info_delay;
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extern struct af_info af_info_channels;
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extern struct af_info af_info_format;
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extern struct af_info af_info_volume;
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extern struct af_info af_info_equalizer;
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extern struct af_info af_info_pan;
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extern struct af_info af_info_surround;
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extern struct af_info af_info_sub;
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extern struct af_info af_info_export;
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extern struct af_info af_info_drc;
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extern struct af_info af_info_extrastereo;
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extern struct af_info af_info_lavcac3enc;
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extern struct af_info af_info_lavrresample;
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extern struct af_info af_info_sweep;
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extern struct af_info af_info_hrtf;
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extern struct af_info af_info_ladspa;
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extern struct af_info af_info_center;
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extern struct af_info af_info_sinesuppress;
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extern struct af_info af_info_karaoke;
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extern struct af_info af_info_scaletempo;
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extern struct af_info af_info_bs2b;
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static struct af_info* filter_list[]={
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&af_info_dummy,
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&af_info_delay,
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&af_info_channels,
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&af_info_format,
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&af_info_volume,
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&af_info_equalizer,
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&af_info_pan,
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&af_info_surround,
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&af_info_sub,
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#ifdef HAVE_SYS_MMAN_H
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&af_info_export,
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#endif
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&af_info_drc,
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&af_info_extrastereo,
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&af_info_lavcac3enc,
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&af_info_lavrresample,
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&af_info_sweep,
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&af_info_hrtf,
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#ifdef CONFIG_LADSPA
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&af_info_ladspa,
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#endif
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&af_info_center,
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&af_info_sinesuppress,
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&af_info_karaoke,
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&af_info_scaletempo,
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#ifdef CONFIG_LIBBS2B
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&af_info_bs2b,
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#endif
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NULL
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};
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// CPU speed
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int* af_cpu_speed = NULL;
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/* Find a filter in the static list of filters using it's name. This
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function is used internally */
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static struct af_info* af_find(char*name)
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{
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int i=0;
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while(filter_list[i]){
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if(!strcmp(filter_list[i]->name,name))
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return filter_list[i];
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i++;
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}
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mp_msg(MSGT_AFILTER, MSGL_ERR, "Couldn't find audio filter '%s'\n",name);
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return NULL;
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}
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/* Find filter in the dynamic filter list using it's name This
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function is used for finding already initialized filters */
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struct af_instance* af_get(struct af_stream* s, char* name)
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{
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struct af_instance* af=s->first;
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// Find the filter
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while(af != NULL){
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if(!strcmp(af->info->name,name))
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return af;
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af=af->next;
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}
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return NULL;
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}
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/*/ Function for creating a new filter of type name. The name may
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contain the commandline parameters for the filter */
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static struct af_instance* af_create(struct af_stream* s, const char* name_with_cmd)
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{
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char* name = strdup(name_with_cmd);
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char* cmdline = name;
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// Allocate space for the new filter and reset all pointers
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struct af_instance* new=malloc(sizeof(struct af_instance));
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if (!name || !new) {
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mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Could not allocate memory\n");
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goto err_out;
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}
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memset(new,0,sizeof(struct af_instance));
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// Check for commandline parameters
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char *skip = strstr(cmdline, "=");
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if (skip) {
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*skip = '\0'; // for name
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cmdline = skip + 1;
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} else {
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cmdline = NULL;
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}
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// Find filter from name
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if(NULL == (new->info=af_find(name)))
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goto err_out;
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/* Make sure that the filter is not already in the list if it is
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non-reentrant */
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if(new->info->flags & AF_FLAGS_NOT_REENTRANT){
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if(af_get(s,name)){
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mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] There can only be one instance of"
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" the filter '%s' in each stream\n",name);
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goto err_out;
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}
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}
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mp_msg(MSGT_AFILTER, MSGL_V, "[libaf] Adding filter %s \n",name);
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// Initialize the new filter
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if(AF_OK == new->info->open(new) &&
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AF_ERROR < new->control(new,AF_CONTROL_POST_CREATE,&s->cfg)){
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if(cmdline){
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if(AF_ERROR>=new->control(new,AF_CONTROL_COMMAND_LINE,cmdline))
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goto err_out;
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}
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free(name);
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return new;
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}
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err_out:
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free(new);
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mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Couldn't create or open audio filter '%s'\n",
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name);
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free(name);
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return NULL;
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}
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/* Create and insert a new filter of type name before the filter in the
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argument. This function can be called during runtime, the return
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value is the new filter */
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static struct af_instance* af_prepend(struct af_stream* s, struct af_instance* af, const char* name)
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{
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// Create the new filter and make sure it is OK
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struct af_instance* new=af_create(s,name);
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if(!new)
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return NULL;
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// Update pointers
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new->next=af;
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if(af){
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new->prev=af->prev;
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af->prev=new;
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}
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else
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s->last=new;
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if(new->prev)
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new->prev->next=new;
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else
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s->first=new;
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return new;
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}
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/* Create and insert a new filter of type name after the filter in the
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argument. This function can be called during runtime, the return
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value is the new filter */
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static struct af_instance* af_append(struct af_stream* s, struct af_instance* af, const char* name)
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{
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// Create the new filter and make sure it is OK
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struct af_instance* new=af_create(s,name);
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if(!new)
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return NULL;
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// Update pointers
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new->prev=af;
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if(af){
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new->next=af->next;
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af->next=new;
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}
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else
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s->first=new;
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if(new->next)
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new->next->prev=new;
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else
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s->last=new;
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return new;
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}
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// Uninit and remove the filter "af"
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void af_remove(struct af_stream* s, struct af_instance* af)
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{
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if(!af) return;
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// Print friendly message
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mp_msg(MSGT_AFILTER, MSGL_V, "[libaf] Removing filter %s \n",af->info->name);
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// Notify filter before changing anything
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af->control(af,AF_CONTROL_PRE_DESTROY,0);
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// Detach pointers
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if(af->prev)
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af->prev->next=af->next;
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else
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s->first=af->next;
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if(af->next)
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af->next->prev=af->prev;
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else
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s->last=af->prev;
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// Uninitialize af and free memory
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af->uninit(af);
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free(af);
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}
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static void print_fmt(struct mp_audio *d)
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{
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if (d) {
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mp_msg(MSGT_AFILTER, MSGL_V, "%dHz/%dch/%s", d->rate, d->nch,
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af_fmt2str_short(d->format));
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} else {
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mp_msg(MSGT_AFILTER, MSGL_V, "(?)");
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}
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}
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static void af_print_filter_chain(struct af_stream* s)
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{
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mp_msg(MSGT_AFILTER, MSGL_V, "Audio filter chain:\n");
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mp_msg(MSGT_AFILTER, MSGL_V, " [in] ");
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print_fmt(&s->input);
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mp_msg(MSGT_AFILTER, MSGL_V, "\n");
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struct af_instance *af = s->first;
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while (af) {
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mp_msg(MSGT_AFILTER, MSGL_V, " [%s] ", af->info->name);
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print_fmt(af->data);
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mp_msg(MSGT_AFILTER, MSGL_V, "\n");
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af = af->next;
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}
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mp_msg(MSGT_AFILTER, MSGL_V, " [out] ");
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print_fmt(&s->output);
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mp_msg(MSGT_AFILTER, MSGL_V, "\n");
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}
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// Warning:
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// A failed af_reinit() leaves the audio chain behind in a useless, broken
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// state (for example, format filters that were tentatively inserted stay
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// inserted).
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// In that case, you should always rebuild the filter chain, or abort.
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int af_reinit(struct af_stream* s, struct af_instance* af)
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{
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do{
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struct mp_audio in; // Format of the input to current filter
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int rv=0; // Return value
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// Check if there are any filters left in the list
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if(NULL == af){
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if(!(af=af_append(s,s->first,"dummy")))
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return AF_UNKNOWN;
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else
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return AF_ERROR;
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}
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// Check if this is the first filter
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if(!af->prev)
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memcpy(&in,&(s->input),sizeof(struct mp_audio));
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else
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memcpy(&in,af->prev->data,sizeof(struct mp_audio));
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// Reset just in case...
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in.audio=NULL;
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in.len=0;
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rv = af->control(af,AF_CONTROL_REINIT,&in);
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switch(rv){
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case AF_OK:
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af = af->next;
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break;
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case AF_FALSE:{ // Configuration filter is needed
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// Do auto insertion only if force is not specified
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if((AF_INIT_TYPE_MASK & s->cfg.force) != AF_INIT_FORCE){
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struct af_instance* new = NULL;
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// Insert channels filter
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if((af->prev?af->prev->data->nch:s->input.nch) != in.nch){
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// Create channels filter
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if(NULL == (new = af_prepend(s,af,"channels")))
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return AF_ERROR;
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// Set number of output channels
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if(AF_OK != (rv = new->control(new,AF_CONTROL_CHANNELS,&in.nch)))
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return rv;
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// Initialize channels filter
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if(!new->prev)
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memcpy(&in,&(s->input),sizeof(struct mp_audio));
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else
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memcpy(&in,new->prev->data,sizeof(struct mp_audio));
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if(AF_OK != (rv = new->control(new,AF_CONTROL_REINIT,&in)))
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return rv;
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}
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// Insert format filter
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if((af->prev?af->prev->data->format:s->input.format) != in.format){
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// Create format filter
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if(NULL == (new = af_prepend(s,af,"format")))
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return AF_ERROR;
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// Set output bits per sample
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in.format |= af_bits2fmt(in.bps*8);
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if(AF_OK != (rv = new->control(new,AF_CONTROL_FORMAT_FMT,&in.format)))
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return rv;
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// Initialize format filter
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if(!new->prev)
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memcpy(&in,&(s->input),sizeof(struct mp_audio));
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else
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memcpy(&in,new->prev->data,sizeof(struct mp_audio));
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if(AF_OK != (rv = new->control(new,AF_CONTROL_REINIT,&in)))
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return rv;
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}
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if(!new){ // Should _never_ happen
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mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Unable to correct audio format. "
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"This error should never occur, please send a bug report.\n");
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return AF_ERROR;
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}
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af=new->next;
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}
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else {
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mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Automatic filter insertion disabled "
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"but formats do not match. Giving up.\n");
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return AF_ERROR;
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}
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break;
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}
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case AF_DETACH:{ // Filter is redundant and wants to be unloaded
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// Do auto remove only if force is not specified
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if((AF_INIT_TYPE_MASK & s->cfg.force) != AF_INIT_FORCE){
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struct af_instance* aft=af->prev;
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af_remove(s,af);
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if(aft)
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af=aft->next;
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else
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af=s->first; // Restart configuration
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}
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break;
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}
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default:
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mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Reinitialization did not work, audio"
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" filter '%s' returned error code %i\n",af->info->name,rv);
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return AF_ERROR;
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}
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}while(af);
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af_print_filter_chain(s);
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return AF_OK;
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}
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// Uninit and remove all filters
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void af_uninit(struct af_stream* s)
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{
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while(s->first)
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af_remove(s,s->first);
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}
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/**
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* Extend the filter chain so we get the required output format at the end.
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* \return AF_ERROR on error, AF_OK if successful.
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*/
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static int fixup_output_format(struct af_stream* s)
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{
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struct af_instance* af = NULL;
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// Check number of output channels fix if not OK
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// If needed always inserted last -> easy to screw up other filters
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if(s->output.nch && s->last->data->nch!=s->output.nch){
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if(!strcmp(s->last->info->name,"format"))
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af = af_prepend(s,s->last,"channels");
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else
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af = af_append(s,s->last,"channels");
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// Init the new filter
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if(!af || (AF_OK != af->control(af,AF_CONTROL_CHANNELS,&(s->output.nch))))
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return AF_ERROR;
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if(AF_OK != af_reinit(s,af))
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return AF_ERROR;
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}
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// Check output format fix if not OK
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if(s->output.format != AF_FORMAT_UNKNOWN &&
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s->last->data->format != s->output.format){
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if(strcmp(s->last->info->name,"format"))
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af = af_append(s,s->last,"format");
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else
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af = s->last;
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// Init the new filter
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s->output.format |= af_bits2fmt(s->output.bps*8);
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if(!af || (AF_OK != af->control(af,AF_CONTROL_FORMAT_FMT,&(s->output.format))))
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return AF_ERROR;
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if(AF_OK != af_reinit(s,af))
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return AF_ERROR;
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}
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// Re init again just in case
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if(AF_OK != af_reinit(s,s->first))
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return AF_ERROR;
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if (s->output.format == AF_FORMAT_UNKNOWN)
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s->output.format = s->last->data->format;
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if (!s->output.nch) s->output.nch = s->last->data->nch;
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if (!s->output.rate) s->output.rate = s->last->data->rate;
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if((s->last->data->format != s->output.format) ||
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(s->last->data->nch != s->output.nch) ||
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(s->last->data->rate != s->output.rate)) {
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return AF_ERROR;
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}
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return AF_OK;
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}
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/**
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* Automatic downmix to stereo in case the codec does not implement it.
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*/
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static void af_downmix(struct af_stream* s)
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{
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static const char * const downmix_strs[AF_NCH + 1] = {
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/* FL FR RL RR FC LF AL AR */
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[3] = "pan=2:" "0.6:0:" "0:0.6:" "0.4:0.4",
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[4] = "pan=2:" "0.6:0:" "0:0.6:" "0.4:0:" "0:0.4",
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[5] = "pan=2:" "0.5:0:" "0:0.5:" "0.2:0:" "0:0.2:" "0.3:0.3",
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[6] = "pan=2:" "0.4:0:" "0:0.4:" "0.2:0:" "0:0.2:" "0.3:0.3:" "0.1:0.1",
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[7] = "pan=2:" "0.4:0:" "0:0.4:" "0.2:0:" "0:0.2:" "0.3:0.3:" "0.1:0:" "0:0.1",
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[8] = "pan=2:" "0.4:0:" "0:0.4:" "0.15:0:" "0:0.15:" "0.25:0.25:" "0.1:0.1:" "0.1:0:" "0:0.1",
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};
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const char *af_pan_str = downmix_strs[s->input.nch];
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if (af_pan_str)
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af_append(s, s->first, af_pan_str);
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}
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/* Initialize the stream "s". This function creates a new filter list
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if necessary according to the values set in input and output. Input
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and output should contain the format of the current movie and the
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formate of the preferred output respectively. The function is
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reentrant i.e. if called with an already initialized stream the
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stream will be reinitialized.
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If one of the prefered output parameters is 0 the one that needs
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no conversion is used (i.e. the output format in the last filter).
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The return value is 0 if success and -1 if failure */
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int af_init(struct af_stream* s)
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{
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struct MPOpts *opts = s->opts;
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int i=0;
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// Sanity check
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if(!s) return -1;
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// Precaution in case caller is misbehaving
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s->input.audio = s->output.audio = NULL;
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s->input.len = s->output.len = 0;
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// Figure out how fast the machine is
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if(AF_INIT_AUTO == (AF_INIT_TYPE_MASK & s->cfg.force))
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|
s->cfg.force = (s->cfg.force & ~AF_INIT_TYPE_MASK) | AF_INIT_TYPE;
|
|
|
|
// Check if this is the first call
|
|
if(!s->first){
|
|
// Append a downmix pan filter at the beginning of the chain if needed
|
|
if (s->input.nch != opts->audio_output_channels
|
|
&& opts->audio_output_channels == 2)
|
|
af_downmix(s);
|
|
// Add all filters in the list (if there are any)
|
|
if (s->cfg.list) {
|
|
while(s->cfg.list[i]){
|
|
if(!af_append(s,s->last,s->cfg.list[i++]))
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we do not have any filters otherwise
|
|
// add dummy to make automatic format conversion work
|
|
if (!s->first && !af_append(s, s->first, "dummy"))
|
|
return -1;
|
|
|
|
// Init filters
|
|
if(AF_OK != af_reinit(s,s->first))
|
|
return -1;
|
|
|
|
// make sure the chain is not empty and valid (e.g. because of AF_DETACH)
|
|
if (!s->first)
|
|
if (!af_append(s,s->first,"dummy") || AF_OK != af_reinit(s,s->first))
|
|
return -1;
|
|
|
|
// Check output format
|
|
if((AF_INIT_TYPE_MASK & s->cfg.force) != AF_INIT_FORCE){
|
|
struct af_instance* af = NULL; // New filter
|
|
// Check output frequency if not OK fix with resample
|
|
if(s->output.rate && s->last->data->rate!=s->output.rate){
|
|
// try to find a filter that can change samplrate
|
|
af = af_control_any_rev(s, AF_CONTROL_RESAMPLE_RATE | AF_CONTROL_SET,
|
|
&(s->output.rate));
|
|
if (!af) {
|
|
char *resampler = "lavrresample";
|
|
if((AF_INIT_TYPE_MASK & s->cfg.force) == AF_INIT_SLOW){
|
|
if(!strcmp(s->first->info->name,"format"))
|
|
af = af_append(s,s->first,resampler);
|
|
else
|
|
af = af_prepend(s,s->first,resampler);
|
|
}
|
|
else{
|
|
if(!strcmp(s->last->info->name,"format"))
|
|
af = af_prepend(s,s->last,resampler);
|
|
else
|
|
af = af_append(s,s->last,resampler);
|
|
}
|
|
// Init the new filter
|
|
if(!af || (AF_OK != af->control(af,AF_CONTROL_RESAMPLE_RATE | AF_CONTROL_SET,
|
|
&(s->output.rate))))
|
|
return -1;
|
|
}
|
|
if(AF_OK != af_reinit(s,af))
|
|
return -1;
|
|
}
|
|
if (AF_OK != fixup_output_format(s)) {
|
|
// Something is stuffed audio out will not work
|
|
mp_msg(MSGT_AFILTER, MSGL_ERR, "[libaf] Unable to setup filter system can not"
|
|
" meet sound-card demands, please send a bug report. \n");
|
|
af_uninit(s);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Add filter during execution. This function adds the filter "name"
|
|
to the stream s. The filter will be inserted somewhere nice in the
|
|
list of filters. The return value is a pointer to the new filter,
|
|
If the filter couldn't be added the return value is NULL. */
|
|
struct af_instance* af_add(struct af_stream* s, char* name){
|
|
struct af_instance* new;
|
|
// Sanity check
|
|
if(!s || !s->first || !name)
|
|
return NULL;
|
|
// Insert the filter somewhere nice
|
|
if(!strcmp(s->first->info->name,"format"))
|
|
new = af_append(s, s->first, name);
|
|
else
|
|
new = af_prepend(s, s->first, name);
|
|
if(!new)
|
|
return NULL;
|
|
|
|
// Reinitalize the filter list
|
|
if(AF_OK != af_reinit(s, s->first) ||
|
|
AF_OK != fixup_output_format(s)){
|
|
while (s->first)
|
|
af_remove(s, s->first);
|
|
af_init(s);
|
|
return NULL;
|
|
}
|
|
return new;
|
|
}
|
|
|
|
// Filter data chunk through the filters in the list
|
|
struct mp_audio* af_play(struct af_stream* s, struct mp_audio* data)
|
|
{
|
|
struct af_instance* af=s->first;
|
|
// Iterate through all filters
|
|
do{
|
|
if (data->len <= 0) break;
|
|
data=af->play(af,data);
|
|
af=af->next;
|
|
}while(af && data);
|
|
return data;
|
|
}
|
|
|
|
/* Calculate the minimum output buffer size for given input data d
|
|
* when using the RESIZE_LOCAL_BUFFER macro. The +t+1 part ensures the
|
|
* value is >= len*mul rounded upwards to whole samples even if the
|
|
* double 'mul' is inexact. */
|
|
int af_lencalc(double mul, struct mp_audio* d)
|
|
{
|
|
int t = d->bps * d->nch;
|
|
return d->len * mul + t + 1;
|
|
}
|
|
|
|
// Calculate average ratio of filter output size to input size
|
|
double af_calc_filter_multiplier(struct af_stream* s)
|
|
{
|
|
struct af_instance* af=s->first;
|
|
double mul = 1;
|
|
// Iterate through all filters and calculate total multiplication factor
|
|
do{
|
|
mul *= af->mul;
|
|
af=af->next;
|
|
}while(af);
|
|
|
|
return mul;
|
|
}
|
|
|
|
/* Calculate the total delay [bytes output] caused by the filters */
|
|
double af_calc_delay(struct af_stream* s)
|
|
{
|
|
struct af_instance* af=s->first;
|
|
register double delay = 0.0;
|
|
// Iterate through all filters
|
|
while(af){
|
|
delay += af->delay;
|
|
delay *= af->mul;
|
|
af=af->next;
|
|
}
|
|
return delay;
|
|
}
|
|
|
|
/* Helper function called by the macro with the same name this
|
|
function should not be called directly */
|
|
int af_resize_local_buffer(struct af_instance* af, struct mp_audio* data)
|
|
{
|
|
// Calculate new length
|
|
register int len = af_lencalc(af->mul,data);
|
|
mp_msg(MSGT_AFILTER, MSGL_V, "[libaf] Reallocating memory in module %s, "
|
|
"old len = %i, new len = %i\n",af->info->name,af->data->len,len);
|
|
// If there is a buffer free it
|
|
free(af->data->audio);
|
|
// Create new buffer and check that it is OK
|
|
af->data->audio = malloc(len);
|
|
if(!af->data->audio){
|
|
mp_msg(MSGT_AFILTER, MSGL_FATAL, "[libaf] Could not allocate memory \n");
|
|
return AF_ERROR;
|
|
}
|
|
af->data->len=len;
|
|
return AF_OK;
|
|
}
|
|
|
|
// documentation in af.h
|
|
struct af_instance *af_control_any_rev (struct af_stream* s, int cmd, void* arg) {
|
|
int res = AF_UNKNOWN;
|
|
struct af_instance* filt = s->last;
|
|
while (filt) {
|
|
res = filt->control(filt, cmd, arg);
|
|
if (res == AF_OK)
|
|
return filt;
|
|
filt = filt->prev;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void af_help (void) {
|
|
int i = 0;
|
|
mp_msg(MSGT_AFILTER, MSGL_INFO, "Available audio filters:\n");
|
|
while (filter_list[i]) {
|
|
if (filter_list[i]->comment && filter_list[i]->comment[0])
|
|
mp_msg(MSGT_AFILTER, MSGL_INFO, " %-15s: %s (%s)\n", filter_list[i]->name, filter_list[i]->info, filter_list[i]->comment);
|
|
else
|
|
mp_msg(MSGT_AFILTER, MSGL_INFO, " %-15s: %s\n", filter_list[i]->name, filter_list[i]->info);
|
|
i++;
|
|
}
|
|
}
|
|
|
|
void af_fix_parameters(struct mp_audio *data)
|
|
{
|
|
if (data->nch < 0 || data->nch > AF_NCH) {
|
|
mp_msg(MSGT_AFILTER, MSGL_ERR, "Invalid number of channels %i, assuming 2.\n", data->nch);
|
|
data->nch = 2;
|
|
}
|
|
data->bps = af_fmt2bits(data->format)/8;
|
|
}
|