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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:35 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:35 -0800 |
commit | f721e3ac031f892af46f255a47d7f54a91317b30 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /audio/wavaudio.c | |
parent | bae1bc39312d5019bd9a5b8d840a529213a69a17 (diff) | |
download | external_qemu-f721e3ac031f892af46f255a47d7f54a91317b30.zip external_qemu-f721e3ac031f892af46f255a47d7f54a91317b30.tar.gz external_qemu-f721e3ac031f892af46f255a47d7f54a91317b30.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'audio/wavaudio.c')
-rw-r--r-- | audio/wavaudio.c | 482 |
1 files changed, 0 insertions, 482 deletions
diff --git a/audio/wavaudio.c b/audio/wavaudio.c deleted file mode 100644 index 8a500b9..0000000 --- a/audio/wavaudio.c +++ /dev/null @@ -1,482 +0,0 @@ -/* - * 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. - */ -#define AUDIO_CAP "wav" -#include "qemu-timer.h" -#include "audio_int.h" -#include "qemu_file.h" - -#define WAV_AUDIO_IN 1 - -/** VOICE OUT (Saving to a .WAV file) - **/ -typedef struct WAVVoiceOut { - HWVoiceOut hw; - QEMUFile *f; - int64_t old_ticks; - void *pcm_buf; - int total_samples; -} WAVVoiceOut; - -static struct { - audsettings_t settings; - const char *wav_path; -} conf_out = { - { - 44100, - 2, - AUD_FMT_S16, - 0 - }, - "qemu.wav" -}; - -static int wav_out_run (HWVoiceOut *hw) -{ - WAVVoiceOut *wav = (WAVVoiceOut *) hw; - int rpos, live, decr, samples; - uint8_t *dst; - st_sample_t *src; - int64_t now = qemu_get_clock (vm_clock); - int64_t ticks = now - wav->old_ticks; - int64_t bytes = (ticks * hw->info.bytes_per_second) / 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_out (hw); - if (!live) { - return 0; - } - - 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); - qemu_put_buffer (wav->f, dst, convert_samples << hw->info.shift); - - 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, audsettings_t *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 - }; - audsettings_t 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 = qemu_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)); - qemu_free (wav->pcm_buf); - wav->pcm_buf = NULL; - return -1; - } - - qemu_put_buffer (wav->f, hdr, sizeof (hdr)); - 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); - - qemu_fseek (wav->f, 4, SEEK_SET); - qemu_put_buffer (wav->f, rlen, 4); - - qemu_fseek (wav->f, 32, SEEK_CUR); - qemu_put_buffer (wav->f, dlen, 4); - - qemu_fclose (wav->f); - wav->f = NULL; - - qemu_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; - QEMUFile* 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, audsettings_t *as) -{ - WAVVoiceIn* wav = (WAVVoiceIn *) hw; - const char* path = conf_in.wav_path; - uint8_t hdr[44]; - audsettings_t wav_as = *as; - int nchannels, freq, format, bits; - - wav->f = qemu_fopen (path, "rb"); - if (wav->f == NULL) { - dolog("Failed to open wave file '%s'\nReason: %s\n", path, - strerror(errno)); - return -1; - } - - if (qemu_get_buffer (wav->f, hdr, sizeof(hdr)) != (int)sizeof(hdr)) { - dolog("File '%s' 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: - qemu_fclose (wav->f); - wav->f = NULL; - return -1; -} - - -static void wav_in_fini (HWVoiceIn *hw) -{ - WAVVoiceIn *wav = (WAVVoiceIn *) hw; - - if (!wav->f) { - return; - } - - qemu_fclose (wav->f); - wav->f = NULL; - - qemu_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; - st_sample_t* dst; - - int64_t now = qemu_get_clock (vm_clock); - int64_t ticks = now - wav->old_ticks; - int64_t bytes = (ticks * hw->info.bytes_per_second) / 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); - - qemu_get_buffer (wav->f, src, convert_samples << hw->info.shift); - memcpy (dst, src, convert_samples << hw->info.shift); - - wpos = (wpos + convert_samples) % hw->samples; - samples -= convert_samples; - wav->total_samples += convert_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"); -} - -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 -}; |