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/*
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* Copyright (C) 2010 Red Hat, Inc.
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*
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* maintained by Gerd Hoffmann <kraxel@redhat.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw/hw.h" |
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#include "qemu/timer.h" |
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#include "ui/qemu-spice.h" |
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#define AUDIO_CAP "spice" |
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#include "audio.h" |
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#include "audio_int.h" |
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#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 |
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#define LINE_OUT_SAMPLES (480 * 4) |
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#else
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#define LINE_OUT_SAMPLES (256 * 4) |
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#endif
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#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 |
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#define LINE_IN_SAMPLES (480 * 4) |
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#else
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#define LINE_IN_SAMPLES (256 * 4) |
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#endif
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typedef struct SpiceRateCtl { |
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int64_t start_ticks; |
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int64_t bytes_sent; |
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} SpiceRateCtl; |
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typedef struct SpiceVoiceOut { |
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HWVoiceOut hw; |
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SpicePlaybackInstance sin; |
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SpiceRateCtl rate; |
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int active;
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uint32_t *frame; |
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uint32_t *fpos; |
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uint32_t fsize; |
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} SpiceVoiceOut; |
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typedef struct SpiceVoiceIn { |
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HWVoiceIn hw; |
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SpiceRecordInstance sin; |
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SpiceRateCtl rate; |
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int active;
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uint32_t samples[LINE_IN_SAMPLES]; |
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} SpiceVoiceIn; |
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static const SpicePlaybackInterface playback_sif = { |
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.base.type = SPICE_INTERFACE_PLAYBACK, |
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.base.description = "playback",
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.base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR, |
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.base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR, |
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}; |
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static const SpiceRecordInterface record_sif = { |
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.base.type = SPICE_INTERFACE_RECORD, |
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.base.description = "record",
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.base.major_version = SPICE_INTERFACE_RECORD_MAJOR, |
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.base.minor_version = SPICE_INTERFACE_RECORD_MINOR, |
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}; |
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static void *spice_audio_init (void) |
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{ |
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if (!using_spice) {
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return NULL; |
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} |
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return &spice_audio_init;
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} |
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static void spice_audio_fini (void *opaque) |
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{ |
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/* nothing */
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} |
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static void rate_start (SpiceRateCtl *rate) |
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{ |
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memset (rate, 0, sizeof (*rate)); |
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rate->start_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
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} |
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static int rate_get_samples (struct audio_pcm_info *info, SpiceRateCtl *rate) |
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{ |
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int64_t now; |
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int64_t ticks; |
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int64_t bytes; |
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int64_t samples; |
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now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
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ticks = now - rate->start_ticks; |
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bytes = muldiv64 (ticks, info->bytes_per_second, get_ticks_per_sec ()); |
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samples = (bytes - rate->bytes_sent) >> info->shift; |
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if (samples < 0 || samples > 65536) { |
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fprintf (stderr, "Resetting rate control (%" PRId64 " samples)\n", samples); |
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rate_start (rate); |
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samples = 0;
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} |
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rate->bytes_sent += samples << info->shift; |
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return samples;
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} |
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/* playback */
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static int line_out_init (HWVoiceOut *hw, struct audsettings *as) |
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{ |
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
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struct audsettings settings;
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#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 |
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settings.freq = spice_server_get_best_playback_rate(NULL);
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#else
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settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ; |
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#endif
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settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN; |
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settings.fmt = AUD_FMT_S16; |
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settings.endianness = AUDIO_HOST_ENDIANNESS; |
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audio_pcm_init_info (&hw->info, &settings); |
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hw->samples = LINE_OUT_SAMPLES; |
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out->active = 0;
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out->sin.base.sif = &playback_sif.base; |
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qemu_spice_add_interface (&out->sin.base); |
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#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 |
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spice_server_set_playback_rate(&out->sin, settings.freq); |
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#endif
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return 0; |
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} |
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static void line_out_fini (HWVoiceOut *hw) |
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{ |
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
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spice_server_remove_interface (&out->sin.base); |
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} |
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static int line_out_run (HWVoiceOut *hw, int live) |
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{ |
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
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int rpos, decr;
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int samples;
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if (!live) {
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return 0; |
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} |
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decr = rate_get_samples (&hw->info, &out->rate); |
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decr = audio_MIN (live, decr); |
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samples = decr; |
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rpos = hw->rpos; |
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while (samples) {
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int left_till_end_samples = hw->samples - rpos;
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int len = audio_MIN (samples, left_till_end_samples);
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if (!out->frame) {
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spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize); |
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out->fpos = out->frame; |
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} |
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if (out->frame) {
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len = audio_MIN (len, out->fsize); |
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hw->clip (out->fpos, hw->mix_buf + rpos, len); |
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out->fsize -= len; |
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out->fpos += len; |
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if (out->fsize == 0) { |
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spice_server_playback_put_samples (&out->sin, out->frame); |
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out->frame = out->fpos = NULL;
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} |
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} |
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rpos = (rpos + len) % hw->samples; |
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samples -= len; |
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} |
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hw->rpos = rpos; |
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return decr;
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} |
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static int line_out_write (SWVoiceOut *sw, void *buf, int len) |
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{ |
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return audio_pcm_sw_write (sw, buf, len);
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} |
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static int line_out_ctl (HWVoiceOut *hw, int cmd, ...) |
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{ |
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
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switch (cmd) {
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case VOICE_ENABLE:
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if (out->active) {
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break;
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} |
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out->active = 1;
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rate_start (&out->rate); |
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spice_server_playback_start (&out->sin); |
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break;
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case VOICE_DISABLE:
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if (!out->active) {
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break;
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} |
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out->active = 0;
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if (out->frame) {
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memset (out->fpos, 0, out->fsize << 2); |
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spice_server_playback_put_samples (&out->sin, out->frame); |
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out->frame = out->fpos = NULL;
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} |
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spice_server_playback_stop (&out->sin); |
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break;
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case VOICE_VOLUME:
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{ |
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#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) |
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SWVoiceOut *sw; |
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va_list ap; |
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uint16_t vol[2];
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va_start (ap, cmd); |
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sw = va_arg (ap, SWVoiceOut *); |
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va_end (ap); |
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vol[0] = sw->vol.l / ((1ULL << 16) + 1); |
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vol[1] = sw->vol.r / ((1ULL << 16) + 1); |
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spice_server_playback_set_volume (&out->sin, 2, vol);
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spice_server_playback_set_mute (&out->sin, sw->vol.mute); |
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#endif
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break;
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} |
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} |
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return 0; |
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} |
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/* record */
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static int line_in_init (HWVoiceIn *hw, struct audsettings *as) |
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{ |
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
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struct audsettings settings;
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#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 |
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settings.freq = spice_server_get_best_record_rate(NULL);
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#else
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settings.freq = SPICE_INTERFACE_RECORD_FREQ; |
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#endif
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settings.nchannels = SPICE_INTERFACE_RECORD_CHAN; |
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settings.fmt = AUD_FMT_S16; |
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settings.endianness = AUDIO_HOST_ENDIANNESS; |
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audio_pcm_init_info (&hw->info, &settings); |
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hw->samples = LINE_IN_SAMPLES; |
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in->active = 0;
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in->sin.base.sif = &record_sif.base; |
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qemu_spice_add_interface (&in->sin.base); |
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#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 |
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spice_server_set_record_rate(&in->sin, settings.freq); |
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#endif
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return 0; |
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} |
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static void line_in_fini (HWVoiceIn *hw) |
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{ |
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
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spice_server_remove_interface (&in->sin.base); |
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} |
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static int line_in_run (HWVoiceIn *hw) |
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{ |
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
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int num_samples;
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int ready;
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int len[2]; |
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uint64_t delta_samp; |
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const uint32_t *samples;
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if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) {
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return 0; |
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} |
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delta_samp = rate_get_samples (&hw->info, &in->rate); |
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num_samples = audio_MIN (num_samples, delta_samp); |
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ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples); |
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samples = in->samples; |
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if (ready == 0) { |
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static const uint32_t silence[LINE_IN_SAMPLES]; |
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samples = silence; |
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ready = LINE_IN_SAMPLES; |
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} |
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num_samples = audio_MIN (ready, num_samples); |
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if (hw->wpos + num_samples > hw->samples) {
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len[0] = hw->samples - hw->wpos;
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len[1] = num_samples - len[0]; |
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} else {
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len[0] = num_samples;
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len[1] = 0; |
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} |
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hw->conv (hw->conv_buf + hw->wpos, samples, len[0]);
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if (len[1]) { |
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hw->conv (hw->conv_buf, samples + len[0], len[1]); |
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} |
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hw->wpos = (hw->wpos + num_samples) % hw->samples; |
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return num_samples;
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} |
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static int line_in_read (SWVoiceIn *sw, void *buf, int size) |
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{ |
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return audio_pcm_sw_read (sw, buf, size);
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} |
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static int line_in_ctl (HWVoiceIn *hw, int cmd, ...) |
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{ |
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
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switch (cmd) {
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case VOICE_ENABLE:
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if (in->active) {
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break;
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} |
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in->active = 1;
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rate_start (&in->rate); |
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spice_server_record_start (&in->sin); |
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break;
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case VOICE_DISABLE:
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if (!in->active) {
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break;
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} |
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in->active = 0;
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spice_server_record_stop (&in->sin); |
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break;
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case VOICE_VOLUME:
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{ |
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#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) |
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SWVoiceIn *sw; |
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va_list ap; |
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uint16_t vol[2];
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va_start (ap, cmd); |
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sw = va_arg (ap, SWVoiceIn *); |
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va_end (ap); |
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vol[0] = sw->vol.l / ((1ULL << 16) + 1); |
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vol[1] = sw->vol.r / ((1ULL << 16) + 1); |
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spice_server_record_set_volume (&in->sin, 2, vol);
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spice_server_record_set_mute (&in->sin, sw->vol.mute); |
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#endif
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break;
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} |
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} |
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return 0; |
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} |
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static struct audio_option audio_options[] = { |
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{ /* end of list */ },
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}; |
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static struct audio_pcm_ops audio_callbacks = { |
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.init_out = line_out_init, |
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.fini_out = line_out_fini, |
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.run_out = line_out_run, |
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.write = line_out_write, |
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.ctl_out = line_out_ctl, |
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.init_in = line_in_init, |
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.fini_in = line_in_fini, |
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.run_in = line_in_run, |
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.read = line_in_read, |
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.ctl_in = line_in_ctl, |
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}; |
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struct audio_driver spice_audio_driver = {
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.name = "spice",
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.descr = "spice audio driver",
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.options = audio_options, |
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.init = spice_audio_init, |
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.fini = spice_audio_fini, |
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.pcm_ops = &audio_callbacks, |
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.max_voices_out = 1,
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.max_voices_in = 1,
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.voice_size_out = sizeof (SpiceVoiceOut),
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.voice_size_in = sizeof (SpiceVoiceIn),
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#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) |
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.ctl_caps = VOICE_VOLUME_CAP |
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#endif
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}; |
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void qemu_spice_audio_init (void) |
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{ |
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spice_audio_driver.can_be_default = 1;
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} |