| /* |
| * QEMU WAV audio driver |
| * |
| * Copyright (c) 2004-2005 Vassili Karpov (malc) |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/host-utils.h" |
| #include "qemu/module.h" |
| #include "qemu/timer.h" |
| #include "qapi/opts-visitor.h" |
| #include "audio.h" |
| |
| #define AUDIO_CAP "wav" |
| #include "audio_int.h" |
| |
| typedef struct WAVVoiceOut { |
| HWVoiceOut hw; |
| FILE *f; |
| int64_t old_ticks; |
| void *pcm_buf; |
| int total_samples; |
| } WAVVoiceOut; |
| |
| static int wav_run_out (HWVoiceOut *hw, int live) |
| { |
| WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
| int rpos, decr, samples; |
| uint8_t *dst; |
| struct st_sample *src; |
| int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| int64_t ticks = now - wav->old_ticks; |
| int64_t bytes = |
| muldiv64(ticks, hw->info.bytes_per_second, NANOSECONDS_PER_SECOND); |
| |
| if (bytes > INT_MAX) { |
| samples = INT_MAX >> hw->info.shift; |
| } |
| else { |
| samples = bytes >> hw->info.shift; |
| } |
| |
| wav->old_ticks = now; |
| decr = audio_MIN (live, samples); |
| samples = decr; |
| rpos = hw->rpos; |
| while (samples) { |
| int left_till_end_samples = hw->samples - rpos; |
| int convert_samples = audio_MIN (samples, left_till_end_samples); |
| |
| src = hw->mix_buf + rpos; |
| dst = advance (wav->pcm_buf, rpos << hw->info.shift); |
| |
| hw->clip (dst, src, convert_samples); |
| if (fwrite (dst, convert_samples << hw->info.shift, 1, wav->f) != 1) { |
| dolog ("wav_run_out: fwrite of %d bytes failed\nReaons: %s\n", |
| convert_samples << hw->info.shift, strerror (errno)); |
| } |
| |
| rpos = (rpos + convert_samples) % hw->samples; |
| samples -= convert_samples; |
| wav->total_samples += convert_samples; |
| } |
| |
| hw->rpos = rpos; |
| return decr; |
| } |
| |
| static int wav_write_out (SWVoiceOut *sw, void *buf, int len) |
| { |
| return audio_pcm_sw_write (sw, buf, len); |
| } |
| |
| /* VICE code: Store number as little endian. */ |
| static void le_store (uint8_t *buf, uint32_t val, int len) |
| { |
| int i; |
| for (i = 0; i < len; i++) { |
| buf[i] = (uint8_t) (val & 0xff); |
| val >>= 8; |
| } |
| } |
| |
| static int wav_init_out(HWVoiceOut *hw, struct audsettings *as, |
| void *drv_opaque) |
| { |
| WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
| int bits16 = 0, stereo = 0; |
| uint8_t hdr[] = { |
| 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56, |
| 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00, |
| 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04, |
| 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00 |
| }; |
| Audiodev *dev = drv_opaque; |
| AudiodevWavOptions *wopts = &dev->u.wav; |
| struct audsettings wav_as = audiodev_to_audsettings(dev->u.wav.out); |
| const char *wav_path = wopts->has_path ? wopts->path : "qemu.wav"; |
| |
| stereo = wav_as.nchannels == 2; |
| switch (wav_as.fmt) { |
| case AUDIO_FORMAT_S8: |
| case AUDIO_FORMAT_U8: |
| bits16 = 0; |
| break; |
| |
| case AUDIO_FORMAT_S16: |
| case AUDIO_FORMAT_U16: |
| bits16 = 1; |
| break; |
| |
| case AUDIO_FORMAT_S32: |
| case AUDIO_FORMAT_U32: |
| dolog ("WAVE files can not handle 32bit formats\n"); |
| return -1; |
| |
| default: |
| abort(); |
| } |
| |
| hdr[34] = bits16 ? 0x10 : 0x08; |
| |
| wav_as.endianness = 0; |
| audio_pcm_init_info (&hw->info, &wav_as); |
| |
| hw->samples = 1024; |
| wav->pcm_buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift); |
| if (!wav->pcm_buf) { |
| dolog ("Could not allocate buffer (%d bytes)\n", |
| hw->samples << hw->info.shift); |
| return -1; |
| } |
| |
| le_store (hdr + 22, hw->info.nchannels, 2); |
| le_store (hdr + 24, hw->info.freq, 4); |
| le_store (hdr + 28, hw->info.freq << (bits16 + stereo), 4); |
| le_store (hdr + 32, 1 << (bits16 + stereo), 2); |
| |
| wav->f = fopen(wav_path, "wb"); |
| if (!wav->f) { |
| dolog ("Failed to open wave file `%s'\nReason: %s\n", |
| wav_path, strerror(errno)); |
| g_free (wav->pcm_buf); |
| wav->pcm_buf = NULL; |
| return -1; |
| } |
| |
| if (fwrite (hdr, sizeof (hdr), 1, wav->f) != 1) { |
| dolog ("wav_init_out: failed to write header\nReason: %s\n", |
| strerror(errno)); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static void wav_fini_out (HWVoiceOut *hw) |
| { |
| WAVVoiceOut *wav = (WAVVoiceOut *) hw; |
| uint8_t rlen[4]; |
| uint8_t dlen[4]; |
| uint32_t datalen = wav->total_samples << hw->info.shift; |
| uint32_t rifflen = datalen + 36; |
| |
| if (!wav->f) { |
| return; |
| } |
| |
| le_store (rlen, rifflen, 4); |
| le_store (dlen, datalen, 4); |
| |
| if (fseek (wav->f, 4, SEEK_SET)) { |
| dolog ("wav_fini_out: fseek to rlen failed\nReason: %s\n", |
| strerror(errno)); |
| goto doclose; |
| } |
| if (fwrite (rlen, 4, 1, wav->f) != 1) { |
| dolog ("wav_fini_out: failed to write rlen\nReason: %s\n", |
| strerror (errno)); |
| goto doclose; |
| } |
| if (fseek (wav->f, 32, SEEK_CUR)) { |
| dolog ("wav_fini_out: fseek to dlen failed\nReason: %s\n", |
| strerror (errno)); |
| goto doclose; |
| } |
| if (fwrite (dlen, 4, 1, wav->f) != 1) { |
| dolog ("wav_fini_out: failed to write dlen\nReaons: %s\n", |
| strerror (errno)); |
| goto doclose; |
| } |
| |
| doclose: |
| if (fclose (wav->f)) { |
| dolog ("wav_fini_out: fclose %p failed\nReason: %s\n", |
| wav->f, strerror (errno)); |
| } |
| wav->f = NULL; |
| |
| g_free (wav->pcm_buf); |
| wav->pcm_buf = NULL; |
| } |
| |
| static int wav_ctl_out (HWVoiceOut *hw, int cmd, ...) |
| { |
| (void) hw; |
| (void) cmd; |
| return 0; |
| } |
| |
| static void *wav_audio_init(Audiodev *dev) |
| { |
| assert(dev->driver == AUDIODEV_DRIVER_WAV); |
| return dev; |
| } |
| |
| static void wav_audio_fini (void *opaque) |
| { |
| ldebug ("wav_fini"); |
| } |
| |
| static struct audio_pcm_ops wav_pcm_ops = { |
| .init_out = wav_init_out, |
| .fini_out = wav_fini_out, |
| .run_out = wav_run_out, |
| .write = wav_write_out, |
| .ctl_out = wav_ctl_out, |
| }; |
| |
| static struct audio_driver wav_audio_driver = { |
| .name = "wav", |
| .descr = "WAV renderer http://wikipedia.org/wiki/WAV", |
| .init = wav_audio_init, |
| .fini = wav_audio_fini, |
| .pcm_ops = &wav_pcm_ops, |
| .can_be_default = 0, |
| .max_voices_out = 1, |
| .max_voices_in = 0, |
| .voice_size_out = sizeof (WAVVoiceOut), |
| .voice_size_in = 0 |
| }; |
| |
| static void register_audio_wav(void) |
| { |
| audio_driver_register(&wav_audio_driver); |
| } |
| type_init(register_audio_wav); |