diff options
Diffstat (limited to 'libao/src/src/ao_wav.c')
| -rw-r--r-- | libao/src/src/ao_wav.c | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/libao/src/src/ao_wav.c b/libao/src/src/ao_wav.c deleted file mode 100644 index 297a8ac..0000000 --- a/libao/src/src/ao_wav.c +++ /dev/null @@ -1,291 +0,0 @@ -/* - * - * ao_wav.c - * - * Original Copyright (C) Aaron Holtzman - May 1999 - * Modifications Copyright (C) Stan Seibert - July 2000, July 2001 - * Copyright (C) Monty - January 2010 - * - * This file is part of libao, a cross-platform audio output library. See - * README for a history of this source code. - * - * libao 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, or (at your option) - * any later version. - * - * libao 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 GNU Make; see the file COPYING. If not, write to - * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - * - ******************************************************************** - - last mod: $Id: ao_wav.c 17718 2010-12-06 20:09:29Z xiphmont $ - - ********************************************************************/ - - -#include <stdio.h> -#include <errno.h> -#include <string.h> -#include <signal.h> -#include <ao/ao.h> - -#define WAVE_FORMAT_PCM 0x0001 -#define FORMAT_MULAW 0x0101 -#define IBM_FORMAT_ALAW 0x0102 -#define IBM_FORMAT_ADPCM 0x0103 -#define WAVE_FORMAT_EXTENSIBLE 0xfffe - -#define WAV_HEADER_LEN 68 - -#define WRITE_U32(buf, x) *(buf) = (unsigned char)(x&0xff);\ - *((buf)+1) = (unsigned char)((x>>8)&0xff);\ - *((buf)+2) = (unsigned char)((x>>16)&0xff);\ - *((buf)+3) = (unsigned char)((x>>24)&0xff); - -#define WRITE_U16(buf, x) *(buf) = (unsigned char)(x&0xff);\ - *((buf)+1) = (unsigned char)((x>>8)&0xff); - -#define DEFAULT_SWAP_BUFFER_SIZE 2048 - -struct riff_struct { - unsigned char id[4]; /* RIFF */ - unsigned int len; - unsigned char wave_id[4]; /* WAVE */ -}; - - -struct chunk_struct -{ - unsigned char id[4]; - unsigned int len; -}; - -struct common_struct -{ - unsigned short wFormatTag; - unsigned short wChannels; - unsigned int dwSamplesPerSec; - unsigned int dwAvgBytesPerSec; - unsigned short wBlockAlign; - unsigned short wBitsPerSample; - unsigned short cbSize; - unsigned short wValidBitsPerSample; - unsigned int dwChannelMask; - unsigned short subFormat; -}; - -struct wave_header -{ - struct riff_struct riff; - struct chunk_struct format; - struct common_struct common; - struct chunk_struct data; -}; - - -static char *ao_wav_options[] = {"matrix","verbose","quiet","debug"}; -static ao_info ao_wav_info = -{ - AO_TYPE_FILE, - "WAV file output", - "wav", - "Aaron Holtzman <aholtzma@ess.engr.uvic.ca>", - "Sends output to a .wav file", - AO_FMT_LITTLE, - 0, - ao_wav_options, - sizeof(ao_wav_options)/sizeof(*ao_wav_options) -}; - -typedef struct ao_wav_internal -{ - struct wave_header wave; -} ao_wav_internal; - - -static int ao_wav_test(void) -{ - return 1; /* File driver always works */ -} - - -static ao_info *ao_wav_driver_info(void) -{ - return &ao_wav_info; -} - - -static int ao_wav_device_init(ao_device *device) -{ - ao_wav_internal *internal; - - internal = (ao_wav_internal *) malloc(sizeof(ao_wav_internal)); - - if (internal == NULL) - return 0; /* Could not initialize device memory */ - - memset(&(internal->wave), 0, sizeof(internal->wave)); - - device->internal = internal; - device->output_matrix = strdup("L,R,C,LFE,BL,BR,CL,CR,BC,SL,SR"); - device->output_matrix_order = AO_OUTPUT_MATRIX_COLLAPSIBLE; - - return 1; /* Memory alloc successful */ -} - - -static int ao_wav_set_option(ao_device *device, const char *key, - const char *value) -{ - return 1; /* No options! */ -} - -static int ao_wav_open(ao_device *device, ao_sample_format *format) -{ - ao_wav_internal *internal = (ao_wav_internal *) device->internal; - unsigned char buf[WAV_HEADER_LEN]; - int size = 0x7fffffff; /* Use a bogus size initially */ - - /* Store information */ - internal->wave.common.wChannels = device->output_channels; - internal->wave.common.wBitsPerSample = ((format->bits+7)>>3)<<3; - internal->wave.common.wValidBitsPerSample = format->bits; - internal->wave.common.dwSamplesPerSec = format->rate; - - memset(buf, 0, WAV_HEADER_LEN); - - /* Fill out our wav-header with some information. */ - strncpy(internal->wave.riff.id, "RIFF",4); - internal->wave.riff.len = size - 8; - strncpy(internal->wave.riff.wave_id, "WAVE",4); - - strncpy(internal->wave.format.id, "fmt ",4); - internal->wave.format.len = 40; - - internal->wave.common.wFormatTag = WAVE_FORMAT_EXTENSIBLE; - internal->wave.common.dwAvgBytesPerSec = - internal->wave.common.wChannels * - internal->wave.common.dwSamplesPerSec * - (internal->wave.common.wBitsPerSample >> 3); - - internal->wave.common.wBlockAlign = - internal->wave.common.wChannels * - (internal->wave.common.wBitsPerSample >> 3); - internal->wave.common.cbSize = 22; - internal->wave.common.subFormat = WAVE_FORMAT_PCM; - internal->wave.common.dwChannelMask=device->output_mask; - - strncpy(internal->wave.data.id, "data",4); - - internal->wave.data.len = size - WAV_HEADER_LEN; - - strncpy(buf, internal->wave.riff.id, 4); - WRITE_U32(buf+4, internal->wave.riff.len); - strncpy(buf+8, internal->wave.riff.wave_id, 4); - strncpy(buf+12, internal->wave.format.id,4); - WRITE_U32(buf+16, internal->wave.format.len); - WRITE_U16(buf+20, internal->wave.common.wFormatTag); - WRITE_U16(buf+22, internal->wave.common.wChannels); - WRITE_U32(buf+24, internal->wave.common.dwSamplesPerSec); - WRITE_U32(buf+28, internal->wave.common.dwAvgBytesPerSec); - WRITE_U16(buf+32, internal->wave.common.wBlockAlign); - WRITE_U16(buf+34, internal->wave.common.wBitsPerSample); - WRITE_U16(buf+36, internal->wave.common.cbSize); - WRITE_U16(buf+38, internal->wave.common.wValidBitsPerSample); - WRITE_U32(buf+40, internal->wave.common.dwChannelMask); - WRITE_U16(buf+44, internal->wave.common.subFormat); - memcpy(buf+46,"\x00\x00\x00\x00\x10\x00\x80\x00\x00\xAA\x00\x38\x9B\x71",14); - strncpy(buf+60, internal->wave.data.id, 4); - WRITE_U32(buf+64, internal->wave.data.len); - - if (fwrite(buf, sizeof(char), WAV_HEADER_LEN, device->file) - != WAV_HEADER_LEN) { - return 0; /* Could not write wav header */ - } - - device->driver_byte_format = AO_FMT_LITTLE; - - return 1; -} - - -/* - * play the sample to the already opened file descriptor - */ -static int ao_wav_play(ao_device *device, const char *output_samples, - uint_32 num_bytes) -{ - if (fwrite(output_samples, sizeof(char), num_bytes, - device->file) < num_bytes) - return 0; - else - return 1; - -} - -static int ao_wav_close(ao_device *device) -{ - ao_wav_internal *internal = (ao_wav_internal *) device->internal; - unsigned char buf[4]; /* For holding length values */ - - long size; - - /* Find how long our file is in total, including header */ - size = ftell(device->file); - - if (size < 0) { - return 0; /* Wav header corrupt */ - } - - /* Go back and set correct length info */ - - internal->wave.riff.len = size - 8; - internal->wave.data.len = size - WAV_HEADER_LEN; - - /* Rewind to riff len and write it */ - if (fseek(device->file, 4, SEEK_SET) < 0) - return 0; /* Wav header corrupt */ - - WRITE_U32(buf, internal->wave.riff.len); - if (fwrite(buf, sizeof(char), 4, device->file) < 4) - return 0; /* Wav header corrupt */ - - - /* Rewind to data len and write it */ - if (fseek(device->file, 64, SEEK_SET) < 0) - return 0; /* Wav header corrupt */ - - WRITE_U32(buf, internal->wave.data.len); - if (fwrite(buf, sizeof(char), 4, device->file) < 4) - return 0; /* Wav header corrupt */ - - - return 1; /* Wav header correct */ -} - -static void ao_wav_device_clear(ao_device *device) -{ - ao_wav_internal *internal = (ao_wav_internal *) device->internal; - - free(internal); - device->internal=NULL; -} - - -ao_functions ao_wav = { - ao_wav_test, - ao_wav_driver_info, - ao_wav_device_init, - ao_wav_set_option, - ao_wav_open, - ao_wav_play, - ao_wav_close, - ao_wav_device_clear -}; |