ee6bfaa4c4
sendwavepacket() directly calls the conversion method and output(). In all other cases it puts the unmodified data into a buffer and the conversion thread is doing the main job and puts the data into the output buffer chain. TODO: resampling could also be done by the new thread.
387 lines
10 KiB
C++
387 lines
10 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001-2015 The Bochs Project
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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/////////////////////////////////////////////////////////////////////////
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// Support for sound output to files (based on SB16 code)
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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#include "soundlow.h"
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#include "soundfile.h"
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#if BX_SUPPORT_SOUNDLOW
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#define BX_SOUNDFILE_RAW 0
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#define BX_SOUNDFILE_VOC 1
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#define BX_SOUNDFILE_WAV 2
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#define BX_SOUNDFILE_MID 3
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#define LOG_THIS
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// bx_soundlow_waveout_file_c class implemenzation
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bx_soundlow_waveout_file_c::bx_soundlow_waveout_file_c()
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:bx_soundlow_waveout_c()
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{
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wavefile = NULL;
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type = BX_SOUNDFILE_RAW;
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}
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bx_soundlow_waveout_file_c::~bx_soundlow_waveout_file_c()
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{
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closewaveoutput();
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}
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void bx_soundlow_waveout_file_c::initwavfile()
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{
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Bit8u waveheader[44] =
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{0x52, 0x49, 0x46, 0x46, 0, 0, 0, 0, 0x57, 0x41, 0x56, 0x45, 0x66, 0x6d,
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0x74, 0x20, 0x10, 0, 0, 0, 0x1, 0, 0x2, 0, 0x44, 0xac, 0, 0, 0x10, 0xb1,
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0x2, 0, 0x4, 0, 0x10, 0, 0x64, 0x61, 0x74, 0x61, 0, 0, 0, 0};
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fwrite(waveheader, 1, 44, wavefile);
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}
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void bx_soundlow_waveout_file_c::write_32bit(Bit32u pos, Bit32u value)
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{
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Bit8u size[4] = {(Bit8u)(value & 0xff), (Bit8u)(value >> 8),
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(Bit8u)(value >> 16), (Bit8u)(value >> 24)};
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fseek(wavefile, pos, SEEK_SET);
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fwrite(size, 1, 4, wavefile);
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}
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int bx_soundlow_waveout_file_c::openwaveoutput(const char *wavedev)
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{
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size_t len = strlen(wavedev);
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char ext[4];
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if ((wavefile == NULL) && (len > 0)) {
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if (len > 4) {
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if (wavedev[len-4] == '.') {
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strcpy(ext, wavedev+len-3);
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if (!stricmp(ext, "voc")) {
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type = BX_SOUNDFILE_VOC;
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} else if (!stricmp(ext, "wav")) {
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type = BX_SOUNDFILE_WAV;
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}
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}
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}
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wavefile = fopen(wavedev, "wb");
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if (wavefile == NULL) {
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BX_ERROR(("Failed to open WAVE output file %s.", wavedev));
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} else if (type == BX_SOUNDFILE_VOC) {
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VOC_init_file();
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} else if (type == BX_SOUNDFILE_WAV) {
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initwavfile();
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}
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set_pcm_params(&real_pcm_param);
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if (conversion_control != 1) {
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start_conversion_thread();
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}
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if (mixer_control != 1) {
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pcm_callback_id = register_wave_callback(this, pcm_callback);
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start_mixer_thread();
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}
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return BX_SOUNDLOW_OK;
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} else {
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return BX_SOUNDLOW_ERR;
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}
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}
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int bx_soundlow_waveout_file_c::set_pcm_params(bx_pcm_param_t *param)
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{
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return BX_SOUNDLOW_OK;
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}
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int bx_soundlow_waveout_file_c::output(int length, Bit8u data[])
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{
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Bit8u temparray[12] =
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{ (Bit8u)(real_pcm_param.samplerate & 0xff), (Bit8u)(real_pcm_param.samplerate >> 8), 0, 0,
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(Bit8u)real_pcm_param.bits, real_pcm_param.channels, 0, 0, 0, 0, 0, 0 };
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if (wavefile != NULL) {
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if (type == BX_SOUNDFILE_VOC) {
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switch ((real_pcm_param.format >> 1) & 7) {
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case 2:
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temparray[6] = 3;
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break;
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case 3:
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temparray[6] = 2;
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break;
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case 4:
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temparray[6] = 1;
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break;
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}
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if (real_pcm_param.bits == 16)
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temparray[6] = 4;
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VOC_write_block(9, 12, temparray, length, data);
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} else {
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fwrite(data, 1, length, wavefile);
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}
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if (pcm_callback_id >= 0) {
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BX_MSLEEP(100);
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}
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}
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return BX_SOUNDLOW_OK;
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}
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int bx_soundlow_waveout_file_c::closewaveoutput()
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{
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if (wavefile != NULL) {
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if (type == BX_SOUNDFILE_VOC) {
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fputc(0, wavefile);
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} else if (type == BX_SOUNDFILE_WAV) {
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Bit32u tracklen = ftell(wavefile);
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write_32bit(4, tracklen - 8);
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write_32bit(24, real_pcm_param.samplerate);
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write_32bit(28, (Bit32u)real_pcm_param.samplerate * 4);
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write_32bit(40, tracklen - 44);
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}
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fclose(wavefile);
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wavefile = NULL;
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}
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return BX_SOUNDLOW_OK;
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}
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/* Handlers for the VOC file output */
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// Write the header of the VOC file.
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void bx_soundlow_waveout_file_c::VOC_init_file()
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{
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struct {
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char id[20];
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Bit16u headerlen; // All in LITTLE Endian!
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Bit16u version;
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Bit16u chksum;
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} vocheader =
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{ "Creative Voice File",
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#ifdef BX_LITTLE_ENDIAN
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0x1a, 0x0114, 0x111f };
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#else
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0x1a00, 0x1401, 0x1f11 };
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#endif
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vocheader.id[19] = 26; // Replace string end with 26
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fwrite(&vocheader, 1, sizeof vocheader, wavefile);
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}
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// write one block to the VOC file
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void bx_soundlow_waveout_file_c::VOC_write_block(int block, Bit32u headerlen,
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Bit8u header[], Bit32u datalen, Bit8u data[])
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{
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Bit32u i;
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if (block > 9) {
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BX_ERROR(("VOC Block %d not recognized, ignored.", block));
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return;
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}
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fputc(block, wavefile);
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i = headerlen + datalen;
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#ifdef BX_LITTLE_ENDIAN
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fwrite(&i, 1, 3, wavefile); // write the length in 24-bit little endian
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#else
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Bit8u lengthbytes[3];
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lengthbytes[0] = i & 0xff; i >>= 8;
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lengthbytes[1] = i & 0xff; i >>= 8;
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lengthbytes[2] = i & 0xff;
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fwrite(lengthbytes, 1, 3, wavefile);
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#endif
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BX_DEBUG(("Voc block %d; Headerlen %d; Datalen %d",
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block, headerlen, datalen));
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if (headerlen > 0)
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fwrite(header, 1, headerlen, wavefile);
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if (datalen > 0)
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fwrite(data, 1, datalen, wavefile);
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}
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// bx_soundlow_midiout_file_c class implemenzation
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bx_soundlow_midiout_file_c::bx_soundlow_midiout_file_c()
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:bx_soundlow_midiout_c()
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{
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midifile = NULL;
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type = BX_SOUNDFILE_RAW;
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}
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bx_soundlow_midiout_file_c::~bx_soundlow_midiout_file_c()
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{
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closemidioutput();
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}
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int bx_soundlow_midiout_file_c::openmidioutput(const char *mididev)
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{
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struct {
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Bit8u chunk[4];
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Bit32u chunklen; // all values in BIG Endian!
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Bit16u smftype;
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Bit16u tracknum;
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Bit16u timecode; // 0x80 + deltatimesperquarter << 8
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} midiheader =
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#ifdef BX_LITTLE_ENDIAN
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{ "MTh", 0x06000000, 0, 0x0100, 0x8001 };
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#else
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{ "MTh", 6, 0, 1, 0x180 };
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#endif
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midiheader.chunk[3] = 'd';
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struct {
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Bit8u chunk[4];
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Bit32u chunklen;
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Bit8u data[15];
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} trackheader =
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#ifdef BX_LITTLE_ENDIAN
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{ "MTr", 0xffffff7f,
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#else
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{ "MTr", 0x7fffffff,
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#endif
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{ 0x00,0xff,0x51,3,0x07,0xa1,0x20, // set tempo 120 (0x7a120 us per quarter)
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0x00,0xff,0x58,4,4,2,0x18,0x08 }}; // time sig 4/4
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trackheader.chunk[3] = 'k';
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size_t len = strlen(mididev);
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char ext[4];
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if ((midifile == NULL) && (len > 0)) {
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if (len > 4) {
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if (mididev[len-4] == '.') {
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strcpy(ext, mididev+len-3);
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if (!stricmp(ext, "mid")) {
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type = BX_SOUNDFILE_MID;
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}
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}
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}
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midifile = fopen(mididev, "wb");
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if (midifile == NULL) {
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BX_ERROR(("Failed to open MIDI output file %s.", mididev));
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return BX_SOUNDLOW_ERR;
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} else if (type == BX_SOUNDFILE_MID) {
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fwrite(&midiheader, 1, 14, midifile);
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fwrite(&trackheader, 1, 23, midifile);
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}
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return BX_SOUNDLOW_OK;
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} else {
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return BX_SOUNDLOW_ERR;
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}
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}
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int bx_soundlow_midiout_file_c::sendmidicommand(int delta, int command, int length, Bit8u data[])
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{
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if (midifile != NULL) {
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if (type == BX_SOUNDFILE_MID) {
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writedeltatime(delta);
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}
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fputc(command, midifile);
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if ((command == 0xf0) ||
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(command == 0xf7)) // write event length for sysex/meta events
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writedeltatime(length);
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fwrite(data, 1, length, midifile);
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}
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return BX_SOUNDLOW_OK;
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}
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int bx_soundlow_midiout_file_c::closemidioutput()
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{
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struct {
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Bit8u delta, statusbyte, metaevent, length;
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} metatrackend = { 0, 0xff, 0x2f, 0 };
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if (midifile != NULL) {
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if (type == BX_SOUNDFILE_MID) {
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// Meta event track end (0xff 0x2f 0x00) plus leading delta time
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fwrite(&metatrackend, 1, sizeof(metatrackend), midifile);
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int trlen = ftell(midifile);
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if (trlen < 0)
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BX_PANIC (("ftell failed in closemidioutput()"));
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Bit32u tracklen = (Bit32u)trlen;
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if (tracklen < 22)
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BX_PANIC (("MIDI track length too short"));
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tracklen -= 22; // subtract the midi file and track header
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fseek(midifile, 22 - 4, SEEK_SET);
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// value has to be in big endian
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#ifdef BX_LITTLE_ENDIAN
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tracklen = bx_bswap32(tracklen);
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#endif
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fwrite(&tracklen, 4, 1, midifile);
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}
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fclose(midifile);
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midifile = NULL;
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}
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return BX_SOUNDLOW_OK;
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}
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void bx_soundlow_midiout_file_c::writedeltatime(Bit32u deltatime)
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{
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int i, count = 0;
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Bit8u outbytes[4], value[4];
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if (deltatime == 0) {
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count = 1;
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value[0] = 0;
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} else {
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while ((deltatime > 0) && (count < 4)) { // split into parts of seven bits
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outbytes[count++] = deltatime & 0x7f;
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deltatime >>= 7;
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}
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for (i=0; i<count; i++) // reverse order and
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value[i] = outbytes[count - i - 1] | 0x80; // set eighth bit on
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value[count - 1] &= 0x7f; // all but last byte
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}
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for (int i=0; i<count; i++)
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fputc(value[i], midifile);
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}
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// bx_sound_oss_c class implemenzation
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bx_sound_file_c::bx_sound_file_c()
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:bx_sound_lowlevel_c()
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{
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BX_INFO(("Sound lowlevel module 'file' initialized"));
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}
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bx_soundlow_waveout_c* bx_sound_file_c::get_waveout()
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{
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if (waveout == NULL) {
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waveout = new bx_soundlow_waveout_file_c();
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}
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return waveout;
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}
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bx_soundlow_midiout_c* bx_sound_file_c::get_midiout()
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{
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if (midiout == NULL) {
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midiout = new bx_soundlow_midiout_file_c();
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}
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return midiout;
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}
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#endif
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