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-rw-r--r--libaf/af_export.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/libaf/af_export.c b/libaf/af_export.c
deleted file mode 100644
index 441ec31ac3..0000000000
--- a/libaf/af_export.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * This audio filter exports the incoming signal to other processes
- * using memory mapping. The memory mapped area contains a header:
- * int nch,
- * int size,
- * unsigned long long counter (updated every time the contents of
- * the area changes),
- * the rest is payload (non-interleaved).
- *
- * This file is part of MPlayer.
- *
- * MPlayer 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.
- *
- * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include "config.h"
-
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#include "af.h"
-#include "path.h"
-
-#define DEF_SZ 512 // default buffer size (in samples)
-#define SHARED_FILE "mpv-af_export" /* default file name
- (relative to ~/.mpv/ */
-
-#define SIZE_HEADER (2 * sizeof(int) + sizeof(unsigned long long))
-
-// Data for specific instances of this filter
-typedef struct af_export_s
-{
- unsigned long long count; // Used for sync
- void* buf[AF_NCH]; // Buffers for storing the data before it is exported
- int sz; // Size of buffer in samples
- int wi; // Write index
- int fd; // File descriptor to shared memory area
- char* filename; // File to export data
- uint8_t *mmap_area; // MMap shared area
-} af_export_t;
-
-
-/* Initialization and runtime control
- af audio filter instance
- cmd control command
- arg argument
-*/
-static int control(struct af_instance* af, int cmd, void* arg)
-{
- af_export_t* s = af->setup;
- switch (cmd){
- case AF_CONTROL_REINIT:{
- int i=0;
- int mapsize;
-
- // Free previous buffers
- if (s->buf)
- free(s->buf[0]);
-
- // unmap previous area
- if(s->mmap_area)
- munmap(s->mmap_area, SIZE_HEADER + (af->data->bps*s->sz*af->data->nch));
- // close previous file descriptor
- if(s->fd)
- close(s->fd);
-
- // Accept only int16_t as input format (which sucks)
- af->data->rate = ((struct mp_audio*)arg)->rate;
- af->data->nch = ((struct mp_audio*)arg)->nch;
- af->data->format = AF_FORMAT_S16_NE;
- af->data->bps = 2;
-
- // If buffer length isn't set, set it to the default value
- if(s->sz == 0)
- s->sz = DEF_SZ;
-
- // Allocate new buffers (as one continuous block)
- s->buf[0] = calloc(s->sz*af->data->nch, af->data->bps);
- if(NULL == s->buf[0])
- mp_msg(MSGT_AFILTER, MSGL_FATAL, "[export] Out of memory\n");
- for(i = 1; i < af->data->nch; i++)
- s->buf[i] = (uint8_t *)s->buf[0] + i*s->sz*af->data->bps;
-
- // Init memory mapping
- s->fd = open(s->filename, O_RDWR | O_CREAT | O_TRUNC, 0640);
- mp_msg(MSGT_AFILTER, MSGL_INFO, "[export] Exporting to file: %s\n", s->filename);
- if(s->fd < 0)
- mp_msg(MSGT_AFILTER, MSGL_FATAL, "[export] Could not open/create file: %s\n",
- s->filename);
-
- // header + buffer
- mapsize = (SIZE_HEADER + (af->data->bps * s->sz * af->data->nch));
-
- // grow file to needed size
- for(i = 0; i < mapsize; i++){
- char null = 0;
- write(s->fd, (void*) &null, 1);
- }
-
- // mmap size
- s->mmap_area = mmap(0, mapsize, PROT_READ|PROT_WRITE,MAP_SHARED, s->fd, 0);
- if(s->mmap_area == NULL)
- mp_msg(MSGT_AFILTER, MSGL_FATAL, "[export] Could not mmap file %s\n", s->filename);
- mp_msg(MSGT_AFILTER, MSGL_INFO, "[export] Memory mapped to file: %s (%p)\n",
- s->filename, s->mmap_area);
-
- // Initialize header
- *((int*)s->mmap_area) = af->data->nch;
- *((int*)s->mmap_area + 1) = s->sz * af->data->bps * af->data->nch;
- msync(s->mmap_area, mapsize, MS_ASYNC);
-
- // Use test_output to return FALSE if necessary
- return af_test_output(af, (struct mp_audio*)arg);
- }
- case AF_CONTROL_COMMAND_LINE:{
- int i=0;
- char *str = arg;
-
- if (!str){
- free(s->filename);
-
- s->filename = get_path(SHARED_FILE);
- return AF_OK;
- }
-
- while((str[i]) && (str[i] != ':'))
- i++;
-
- free(s->filename);
-
- s->filename = calloc(i + 1, 1);
- memcpy(s->filename, str, i);
- s->filename[i] = 0;
-
- sscanf(str + i + 1, "%d", &(s->sz));
-
- return af->control(af, AF_CONTROL_EXPORT_SZ | AF_CONTROL_SET, &s->sz);
- }
- case AF_CONTROL_EXPORT_SZ | AF_CONTROL_SET:
- s->sz = * (int *) arg;
- if((s->sz <= 0) || (s->sz > 2048))
- mp_msg(MSGT_AFILTER, MSGL_ERR, "[export] Buffer size must be between"
- " 1 and 2048\n" );
-
- return AF_OK;
- case AF_CONTROL_EXPORT_SZ | AF_CONTROL_GET:
- *(int*) arg = s->sz;
- return AF_OK;
-
- }
- return AF_UNKNOWN;
-}
-
-/* Free allocated memory and clean up other stuff too.
- af audio filter instance
-*/
-static void uninit( struct af_instance* af )
-{
- free(af->data);
- af->data = NULL;
-
- if(af->setup){
- af_export_t* s = af->setup;
- if (s->buf)
- free(s->buf[0]);
-
- // Free mmaped area
- if(s->mmap_area)
- munmap(s->mmap_area, sizeof(af_export_t));
-
- if(s->fd > -1)
- close(s->fd);
-
- free(s->filename);
-
- free(af->setup);
- af->setup = NULL;
- }
-}
-
-/* Filter data through filter
- af audio filter instance
- data audio data
-*/
-static struct mp_audio* play( struct af_instance* af, struct mp_audio* data )
-{
- struct mp_audio* c = data; // Current working data
- af_export_t* s = af->setup; // Setup for this instance
- int16_t* a = c->audio; // Incomming sound
- int nch = c->nch; // Number of channels
- int len = c->len/c->bps; // Number of sample in data chunk
- int sz = s->sz; // buffer size (in samples)
- int flag = 0; // Set to 1 if buffer is filled
-
- int ch, i;
-
- // Fill all buffers
- for(ch = 0; ch < nch; ch++){
- int wi = s->wi; // Reset write index
- int16_t* b = s->buf[ch]; // Current buffer
-
- // Copy data to export buffers
- for(i = ch; i < len; i += nch){
- b[wi++] = a[i];
- if(wi >= sz){ // Don't write outside the end of the buffer
- flag = 1;
- break;
- }
- }
- s->wi = wi % s->sz;
- }
-
- // Export buffer to mmaped area
- if(flag){
- // update buffer in mapped area
- memcpy(s->mmap_area + SIZE_HEADER, s->buf[0], sz * c->bps * nch);
- s->count++; // increment counter (to sync)
- memcpy(s->mmap_area + SIZE_HEADER - sizeof(s->count),
- &(s->count), sizeof(s->count));
- }
-
- // We don't modify data, just export it
- return data;
-}
-
-/* Allocate memory and set function pointers
- af audio filter instance
- returns AF_OK or AF_ERROR
-*/
-static int af_open( struct af_instance* af )
-{
- af->control = control;
- af->uninit = uninit;
- af->play = play;
- af->mul=1;
- af->data = calloc(1, sizeof(struct mp_audio));
- af->setup = calloc(1, sizeof(af_export_t));
- if((af->data == NULL) || (af->setup == NULL))
- return AF_ERROR;
-
- ((af_export_t *)af->setup)->filename = get_path(SHARED_FILE);
-
- return AF_OK;
-}
-
-// Description of this filter
-struct af_info af_info_export = {
- "Sound export filter",
- "export",
- "Anders; Gustavo Sverzut Barbieri <gustavo.barbieri@ic.unicamp.br>",
- "",
- AF_FLAGS_REENTRANT,
- af_open
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 17:08:09 +0000