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/*
* Copyright (C) 2000-2003 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <math.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/stat.h>
#include "xine_internal.h"
#include "xineutils.h"
#include "audio_out.h"
#include "bswap.h"
#define AO_OUT_FILE_IFACE_VERSION 8
#define GAP_TOLERANCE INT_MAX
#ifdef WIN32
#ifndef S_IWUSR
#define S_IWUSR 0x0000
#endif
#ifndef S_IRGRP
#define S_IRGRP 0x0000
#endif
#ifndef S_IROTH
#define S_IROTH 0x0000
#endif
#endif
/* Taken (hStudlyCapsAndAll) from sox's wavwritehdr */
struct wavhdr {
unsigned char bRiffMagic[4]; // 'RIFF'
uint32_t wRiffLength ; // length of file minus the 8 byte riff header
unsigned char bWaveMagic[8]; // 'WAVEfmt '
uint32_t wFmtSize; // length of format chunk minus 8 byte header
uint16_t wFormatTag; // identifies PCM, ULAW etc
uint16_t wChannels;
uint32_t dwSamplesPerSecond; // samples per second per channel
uint32_t dwAvgBytesPerSec; // non-trivial for compressed formats
uint16_t wBlockAlign; // basic block size
uint16_t wBitsPerSample; // non-trivial for compressed formats
// PCM formats then go straight to the data chunk:
unsigned char bData[4]; // 'data'
unsigned long dwDataLength; // length of data chunk minus 8 byte header
};
typedef struct file_driver_s {
ao_driver_t ao_driver;
xine_t *xine;
int capabilities;
int mode;
int32_t sample_rate;
uint32_t num_channels;
uint32_t bits_per_sample;
uint32_t bytes_per_frame;
char *fname;
int fd;
size_t bytes_written;
struct timeval endtime;
} file_driver_t;
typedef struct {
audio_driver_class_t driver_class;
config_values_t *config;
xine_t *xine;
} file_class_t;
/*
* open the audio device for writing to
*/
static int ao_file_open(ao_driver_t *this_gen, uint32_t bits, uint32_t rate, int mode)
{
file_driver_t *this = (file_driver_t *) this_gen;
struct wavhdr w;
xprintf (this->xine, XINE_VERBOSITY_LOG,
"audio_file_out: ao_open bits=%d rate=%d, mode=%d\n", bits, rate, mode);
this->mode = mode;
this->sample_rate = rate;
this->bits_per_sample = bits;
switch (mode) {
case AO_CAP_MODE_MONO:
this->num_channels = 1;
break;
case AO_CAP_MODE_STEREO:
this->num_channels = 2;
break;
}
this->bytes_per_frame = (this->bits_per_sample*this->num_channels) / 8;
this->fd = -1;
this->fname = getenv("XINE_WAVE_OUTPUT");
if (!this->fname)
this->fname = "xine-out.wav";
this->fd = xine_create_cloexec(this->fname, O_WRONLY|O_TRUNC, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
if (this->fd == -1) {
xprintf (this->xine, XINE_VERBOSITY_LOG, "audio_file_out: Failed to open file '%s': %s\n",
this->fname, strerror(errno));
return 0;
}
w.bRiffMagic[0] = 'R';
w.bRiffMagic[1] = 'I';
w.bRiffMagic[2] = 'F';
w.bRiffMagic[3] = 'F';
w.wRiffLength = le2me_32(0x7ff00024);
w.bWaveMagic[0] = 'W';
w.bWaveMagic[1] = 'A';
w.bWaveMagic[2] = 'V';
w.bWaveMagic[3] = 'E';
w.bWaveMagic[4] = 'f';
w.bWaveMagic[5] = 'm';
w.bWaveMagic[6] = 't';
w.bWaveMagic[7] = ' ';
w.wFmtSize = le2me_32(0x10);
w.wFormatTag = le2me_16(1); // PCM;
w.wChannels = le2me_16(this->num_channels);
w.dwSamplesPerSecond = le2me_32(this->sample_rate);
w.dwAvgBytesPerSec = le2me_32(this->sample_rate * this->bytes_per_frame);
w.wBlockAlign = le2me_16(this->bytes_per_frame);
w.wBitsPerSample = le2me_16(this->bits_per_sample);
w.bData[0] = 'd';
w.bData[1] = 'a';
w.bData[2] = 't';
w.bData[3] = 'a';
w.dwDataLength = le2me_32(0x7ffff000);
this->bytes_written = 0;
if (write(this->fd, &w, sizeof(w)) != sizeof(w)) {
xprintf (this->xine, XINE_VERBOSITY_LOG, "audio_file_out: Failed to write WAVE header to file '%s': %s\n",
this->fname, strerror(errno));
close(this->fd);
this->fd = -1;
return 0;
}
xine_monotonic_clock(&this->endtime, NULL);
return this->sample_rate;
}
static int ao_file_num_channels(ao_driver_t *this_gen)
{
file_driver_t *this = (file_driver_t *) this_gen;
return this->num_channels;
}
static int ao_file_bytes_per_frame(ao_driver_t *this_gen)
{
file_driver_t *this = (file_driver_t *) this_gen;
return this->bytes_per_frame;
}
static int ao_file_get_gap_tolerance (ao_driver_t *this_gen)
{
return GAP_TOLERANCE;
}
static int ao_file_write(ao_driver_t *this_gen, int16_t *data,
uint32_t num_frames)
{
file_driver_t *this = (file_driver_t *) this_gen;
size_t len = num_frames * this->bytes_per_frame;
unsigned long usecs;
#ifdef WORDS_BIGENDIAN
/* Eep. .WAV format is little-endian. We need to swap.
Remind me why I picked this output format again? */
if (this->bits_per_sample == 16) {
int i;
for (i=0; i<len/2; i++)
data[i] = bswap_16(data[i]);
} else if (this->bits_per_sample == 32) {
int i;
uint32_t *d32 = (void *)data;
for (i=0; i<len/4; i++)
d32[i] = bswap_16(d32[i]);
}
#endif
while(len) {
ssize_t thislen = write(this->fd, data, len);
if (thislen == -1) {
xprintf (this->xine, XINE_VERBOSITY_LOG, "audio_file_out: Failed to write data to file '%s': %s\n",
this->fname, strerror(errno));
return -1;
}
len -= thislen;
this->bytes_written += thislen;
}
/* Delay for an appropriate amount of time to prevent padding */
usecs = ((10000 * num_frames / (this->sample_rate/100)));
this->endtime.tv_usec += usecs;
while (this->endtime.tv_usec > 1000000) {
this->endtime.tv_usec -= 1000000;
this->endtime.tv_sec++;
}
return 1;
}
static int ao_file_delay (ao_driver_t *this_gen)
{
file_driver_t *this = (file_driver_t *) this_gen;
struct timeval now;
unsigned long tosleep;
/* Work out how long we need to sleep for, and how much
time we've already taken */
xine_monotonic_clock(&now, NULL);
if (now.tv_sec > this->endtime.tv_sec) {
/* We slipped. Compensate */
this->endtime = now;
return 0;
}
if (now.tv_sec == this->endtime.tv_sec &&
now.tv_usec >= this->endtime.tv_usec)
return 0;
tosleep = this->endtime.tv_sec - now.tv_sec;
tosleep *= 1000000;
tosleep += this->endtime.tv_usec - now.tv_usec;
xine_usec_sleep(tosleep);
return 0;
}
static void ao_file_close(ao_driver_t *this_gen)
{
file_driver_t *this = (file_driver_t *) this_gen;
uint32_t len;
len = le2me_32(this->bytes_written);
xprintf (this->xine, XINE_VERBOSITY_DEBUG, "audio_file_out: Close file '%s'. %zu KiB written\n",
this->fname, this->bytes_written / 1024);
if (lseek(this->fd, 40, SEEK_SET) != -1) {
if (write(this->fd, &len, 4) != 4) {
xprintf (this->xine, XINE_VERBOSITY_LOG, "audio_file_out: Failed to write header to file '%s': %s\n",
this->fname, strerror(errno));
}
len = le2me_32(this->bytes_written + 0x24);
if (lseek(this->fd, 4, SEEK_SET) != -1) {
if (write(this->fd, &len, 4) != 4) {
xprintf (this->xine, XINE_VERBOSITY_LOG,
"audio_file_out: Failed to write header to file '%s': %s\n",
this->fname, strerror(errno));
}
}
}
close(this->fd);
this->fd = -1;
}
static uint32_t ao_file_get_capabilities (ao_driver_t *this_gen) {
file_driver_t *this = (file_driver_t *) this_gen;
return this->capabilities;
}
static void ao_file_exit(ao_driver_t *this_gen)
{
file_driver_t *this = (file_driver_t *) this_gen;
if (this->fd != -1)
ao_file_close(this_gen);
free (this);
}
static int ao_file_get_property (ao_driver_t *this_gen, int property) {
return 0;
}
static int ao_file_set_property (ao_driver_t *this_gen, int property, int value) {
return ~value;
}
static int ao_file_ctrl(ao_driver_t *this_gen, int cmd, ...) {
/*file_driver_t *this = (file_driver_t *) this_gen;*/
switch (cmd) {
case AO_CTRL_PLAY_PAUSE:
break;
case AO_CTRL_PLAY_RESUME:
break;
case AO_CTRL_FLUSH_BUFFERS:
break;
}
return 0;
}
static ao_driver_t *open_plugin (audio_driver_class_t *class_gen,
const void *data) {
file_class_t *class = (file_class_t *) class_gen;
/* config_values_t *config = class->config; */
file_driver_t *this;
lprintf ("open_plugin called\n");
this = calloc(1, sizeof (file_driver_t));
if (!this)
return NULL;
this->xine = class->xine;
this->capabilities = AO_CAP_MODE_MONO | AO_CAP_MODE_STEREO;
this->sample_rate = 0;
this->ao_driver.get_capabilities = ao_file_get_capabilities;
this->ao_driver.get_property = ao_file_get_property;
this->ao_driver.set_property = ao_file_set_property;
this->ao_driver.open = ao_file_open;
this->ao_driver.num_channels = ao_file_num_channels;
this->ao_driver.bytes_per_frame = ao_file_bytes_per_frame;
this->ao_driver.delay = ao_file_delay;
this->ao_driver.write = ao_file_write;
this->ao_driver.close = ao_file_close;
this->ao_driver.exit = ao_file_exit;
this->ao_driver.get_gap_tolerance = ao_file_get_gap_tolerance;
this->ao_driver.control = ao_file_ctrl;
this->fd = -1;
return &this->ao_driver;
}
/*
* class functions
*/
static char* get_identifier (audio_driver_class_t *this_gen) {
return "file";
}
static char* get_description (audio_driver_class_t *this_gen) {
return _("xine file audio output plugin");
}
static void dispose_class (audio_driver_class_t *this_gen) {
file_class_t *this = (file_class_t *) this_gen;
free (this);
}
static void *init_class (xine_t *xine, void *data) {
file_class_t *this;
lprintf ("init class\n");
this = calloc(1, sizeof (file_class_t));
if (!this)
return NULL;
this->driver_class.open_plugin = open_plugin;
this->driver_class.get_identifier = get_identifier;
this->driver_class.get_description = get_description;
this->driver_class.dispose = dispose_class;
this->config = xine->config;
this->xine = xine;
return this;
}
static const ao_info_t ao_info_file = {
-1 /* do not auto probe this one */
};
/*
* exported plugin catalog entry
*/
const plugin_info_t xine_plugin_info[] EXPORTED = {
/* type, API, "name", version, special_info, init_function */
{ PLUGIN_AUDIO_OUT, AO_OUT_FILE_IFACE_VERSION, "file", XINE_VERSION_CODE, &ao_info_file, init_class },
{ PLUGIN_NONE, 0, "", 0, NULL, NULL }
};