| /* |
| * QEMU WAV audio driver |
| * |
| * Copyright (c) 2007 The Android Open Source Project |
| * 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 "hw/hw.h" |
| #include "qemu/timer.h" |
| #include "audio.h" |
| |
| #define AUDIO_CAP "wav" |
| #include "audio_int.h" |
| |
| #define WAV_AUDIO_IN 1 |
| |
| /** VOICE OUT (Saving to a .WAV file) |
| **/ |
| typedef struct WAVVoiceOut { |
| HWVoiceOut hw; |
| FILE *f; |
| int64_t old_ticks; |
| void *pcm_buf; |
| int total_samples; |
| } WAVVoiceOut; |
| |
| static struct { |
| struct audsettings settings; |
| const char *wav_path; |
| } conf_out = { |
| { |
| 44100, |
| 2, |
| AUD_FMT_S16, |
| 0 |
| }, |
| "qemu.wav" |
| }; |
| |
| static int wav_out_run (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, get_ticks_per_sec ()); |
| |
| 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_out_write (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_out_init (HWVoiceOut *hw, struct audsettings *as) |
| { |
| 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 |
| }; |
| struct audsettings wav_as = conf_out.settings; |
| |
| (void) as; |
| |
| stereo = wav_as.nchannels == 2; |
| switch (wav_as.fmt) { |
| case AUD_FMT_S8: |
| case AUD_FMT_U8: |
| bits16 = 0; |
| break; |
| |
| case AUD_FMT_S16: |
| case AUD_FMT_U16: |
| bits16 = 1; |
| break; |
| |
| case AUD_FMT_S32: |
| case AUD_FMT_U32: |
| dolog ("WAVE files can not handle 32bit formats\n"); |
| return -1; |
| } |
| |
| 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 (AUDIO_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 (conf_out.wav_path, "wb"); |
| if (!wav->f) { |
| dolog ("Failed to open wave file `%s'\nReason: %s\n", |
| conf_out.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_out_fini (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); |
| |
| fseek (wav->f, 4, SEEK_SET); |
| fwrite(rlen, 4, 1, wav->f); |
| |
| fseek (wav->f, 32, SEEK_CUR); |
| fwrite(dlen, 4, 1, wav->f); |
| |
| fclose (wav->f); |
| wav->f = NULL; |
| |
| g_free (wav->pcm_buf); |
| wav->pcm_buf = NULL; |
| } |
| |
| static int wav_out_ctl (HWVoiceOut *hw, int cmd, ...) |
| { |
| (void) hw; |
| (void) cmd; |
| return 0; |
| } |
| |
| |
| #if WAV_AUDIO_IN |
| |
| /** WAV IN (Reading from a .WAV file) |
| **/ |
| |
| static struct { |
| const char *wav_path; |
| } conf_in = { |
| "qemu.wav" |
| }; |
| |
| typedef struct WAVVoiceIn { |
| HWVoiceIn hw; |
| FILE* f; |
| int64_t old_ticks; |
| void* pcm_buf; |
| int total_samples; |
| int total_size; |
| } WAVVoiceIn; |
| |
| |
| static int |
| le_read( const uint8_t* p, int size ) { |
| int shift = 0; |
| int result = 0; |
| for ( ; size > 0; size-- ) { |
| result = result | (p[0] << shift); |
| p += 1; |
| shift += 8; |
| } |
| return result; |
| } |
| |
| static int |
| wav_in_init (HWVoiceIn *hw, struct audsettings *as) |
| { |
| WAVVoiceIn* wav = (WAVVoiceIn *) hw; |
| const char* path = conf_in.wav_path; |
| uint8_t hdr[44]; |
| struct audsettings wav_as = *as; |
| int nchannels, freq, format, bits; |
| |
| wav->f = fopen (path, "rb"); |
| if (wav->f == NULL) { |
| dolog("Failed to open wave file '%s'\nReason: %s\n", path, |
| strerror(errno)); |
| return -1; |
| } |
| |
| if (fread(hdr, sizeof(hdr), 1, wav->f) != 1) { |
| dolog("File '%s' doesn't seem to be a .wav file\n", path); |
| goto Fail; |
| } |
| |
| /* check that this is a wave file */ |
| if ( hdr[0] != 'R' || hdr[1] != 'I' || hdr[2] != 'F' || hdr[3] != 'F' || |
| hdr[8] != 'W' || hdr[9] != 'A' || hdr[10]!= 'V' || hdr[11]!= 'E' || |
| hdr[12]!= 'f' || hdr[13]!= 'm' || hdr[14]!= 't' || hdr[15]!= ' ' || |
| hdr[40]!= 'd' || hdr[41]!= 'a' || hdr[42]!= 't' || hdr[43]!= 'a') { |
| dolog("File '%s' is not a valid .wav file\n", path); |
| goto Fail; |
| } |
| |
| nchannels = le_read( hdr+22, 2 ); |
| freq = le_read( hdr+24, 4 ); |
| format = le_read( hdr+32, 2 ); |
| bits = le_read( hdr+34, 2 ); |
| |
| wav->total_size = le_read( hdr+40, 4 ); |
| |
| /* perform some sainty checks */ |
| switch (nchannels) { |
| case 1: |
| case 2: break; |
| default: |
| dolog("unsupported number of channels (%d) in '%s'\n", |
| nchannels, path); |
| goto Fail; |
| } |
| |
| switch (format) { |
| case 1: |
| case 2: |
| case 4: break; |
| default: |
| dolog("unsupported bytes per sample (%d) in '%s'\n", |
| format, path); |
| goto Fail; |
| } |
| |
| if (format*8/nchannels != bits) { |
| dolog("invalid bits per sample (%d, expected %d) in '%s'\n", |
| bits, format*8/nchannels, path); |
| goto Fail; |
| } |
| |
| wav_as.nchannels = nchannels; |
| wav_as.fmt = (bits == 8) ? AUD_FMT_U8 : AUD_FMT_S16; |
| wav_as.freq = freq; |
| wav_as.endianness = 0; /* always little endian */ |
| |
| audio_pcm_init_info (&hw->info, &wav_as); |
| |
| hw->samples = 1024; |
| wav->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); |
| if (!wav->pcm_buf) { |
| goto Fail; |
| } |
| return 0; |
| |
| Fail: |
| fclose (wav->f); |
| wav->f = NULL; |
| return -1; |
| } |
| |
| |
| static void wav_in_fini (HWVoiceIn *hw) |
| { |
| WAVVoiceIn *wav = (WAVVoiceIn *) hw; |
| |
| if (!wav->f) { |
| return; |
| } |
| |
| fclose (wav->f); |
| wav->f = NULL; |
| |
| g_free (wav->pcm_buf); |
| wav->pcm_buf = NULL; |
| } |
| |
| static int wav_in_run (HWVoiceIn *hw) |
| { |
| WAVVoiceIn* wav = (WAVVoiceIn *) hw; |
| int wpos, live, decr, samples; |
| uint8_t* src; |
| struct st_sample* dst; |
| |
| 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, get_ticks_per_sec()); |
| |
| if (bytes > INT_MAX) { |
| samples = INT_MAX >> hw->info.shift; |
| } |
| else { |
| samples = bytes >> hw->info.shift; |
| } |
| |
| live = audio_pcm_hw_get_live_in (hw); |
| if (!live) { |
| return 0; |
| } |
| |
| wav->old_ticks = now; |
| |
| decr = audio_MIN (live, samples); |
| samples = decr; |
| wpos = hw->wpos; |
| while (samples) { |
| int left_till_end_samples = hw->samples - wpos; |
| int convert_samples = audio_MIN (samples, left_till_end_samples); |
| |
| dst = hw->conv_buf + wpos; |
| src = advance (wav->pcm_buf, wpos << hw->info.shift); |
| |
| clearerr(wav->f); |
| size_t read_bytes = fread(src, 1, convert_samples << hw->info.shift, wav->f); |
| if (read_bytes == 0 && ferror(wav->f) != EINTR) |
| return 0; |
| |
| size_t read_samples = read_bytes >> hw->info.shift; |
| memcpy (dst, src, read_bytes); |
| |
| wpos = (wpos + read_samples) % hw->samples; |
| samples -= read_samples; |
| wav->total_samples += read_samples; |
| } |
| |
| hw->wpos = wpos; |
| return decr; |
| } |
| |
| static int wav_in_read (SWVoiceIn *sw, void *buf, int len) |
| { |
| return audio_pcm_sw_read (sw, buf, len); |
| } |
| |
| static int wav_in_ctl (HWVoiceIn *hw, int cmd, ...) |
| { |
| (void) hw; |
| (void) cmd; |
| return 0; |
| } |
| |
| #endif /* WAV_AUDIO_IN */ |
| |
| /** COMMON CODE |
| **/ |
| static void *wav_audio_init (void) |
| { |
| return &conf_out; |
| } |
| |
| static void wav_audio_fini (void *opaque) |
| { |
| (void) opaque; |
| ldebug ("wav_fini"); |
| } |
| |
| static struct audio_option wav_options[] = { |
| {"FREQUENCY", AUD_OPT_INT, &conf_out.settings.freq, |
| "Frequency", NULL, 0}, |
| |
| {"FORMAT", AUD_OPT_FMT, &conf_out.settings.fmt, |
| "Format", NULL, 0}, |
| |
| {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf_out.settings.nchannels, |
| "Number of channels (1 - mono, 2 - stereo)", NULL, 0}, |
| |
| {"PATH", AUD_OPT_STR, &conf_out.wav_path, |
| "Path to output .wav file", NULL, 0}, |
| |
| #if WAV_AUDIO_IN |
| {"IN_PATH", AUD_OPT_STR, &conf_in.wav_path, |
| "Path to input .wav file", NULL, 0}, |
| #endif |
| {NULL, 0, NULL, NULL, NULL, 0} |
| }; |
| |
| struct audio_pcm_ops wav_pcm_ops = { |
| wav_out_init, |
| wav_out_fini, |
| wav_out_run, |
| wav_out_write, |
| wav_out_ctl, |
| |
| #if WAV_AUDIO_IN |
| wav_in_init, |
| wav_in_fini, |
| wav_in_run, |
| wav_in_read, |
| wav_in_ctl |
| #else |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL |
| #endif |
| }; |
| |
| struct audio_driver wav_audio_driver = { |
| INIT_FIELD (name = ) "wav", |
| INIT_FIELD (descr = ) |
| "WAV file read/write (www.wikipedia.org/wiki/WAV)", |
| INIT_FIELD (options = ) wav_options, |
| INIT_FIELD (init = ) wav_audio_init, |
| INIT_FIELD (fini = ) wav_audio_fini, |
| INIT_FIELD (pcm_ops = ) &wav_pcm_ops, |
| INIT_FIELD (can_be_default = ) 0, |
| #if WAV_AUDIO_IN |
| INIT_FIELD (max_voices_in = ) 1, |
| INIT_FIELD (max_voices_out = ) 1, |
| INIT_FIELD (voice_size_out = ) sizeof (WAVVoiceOut), |
| INIT_FIELD (voice_size_in = ) sizeof (WAVVoiceIn) |
| #else |
| INIT_FIELD (max_voices_out = ) 1, |
| INIT_FIELD (max_voices_in = ) 0, |
| INIT_FIELD (voice_size_out = ) sizeof (WAVVoiceOut), |
| INIT_FIELD (voice_size_in = ) 0 |
| #endif |
| }; |
