1 files changed, 583 insertions, 0 deletions

diff --git a/src/modules/module-waveout.c b/src/modules/module-waveout.c
new file mode 100644
index 000000000..8809c31d3
--- /dev/null
+++ b/src/modules/module-waveout.c
@@ -0,0 +1,583 @@
+/* $Id$ */
+
+/***
+  This file is part of polypaudio.
+ 
+  polypaudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+ 
+  polypaudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public License
+  along with polypaudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <windows.h>
+#include <mmsystem.h>
+#include <assert.h>
+
+#include <polyp/mainloop-api.h>
+
+#include <polypcore/sink.h>
+#include <polypcore/source.h>
+#include <polypcore/module.h>
+#include <polypcore/modargs.h>
+#include <polypcore/sample-util.h>
+#include <polypcore/util.h>
+#include <polypcore/log.h>
+#include <polypcore/xmalloc.h>
+
+#include "module-waveout-symdef.h"
+
+PA_MODULE_AUTHOR("Pierre Ossman")
+PA_MODULE_DESCRIPTION("Windows waveOut Sink/Source")
+PA_MODULE_VERSION(PACKAGE_VERSION)
+PA_MODULE_USAGE("sink_name=<name for the sink> source_name=<name for the source> record=<enable source?> playback=<enable sink?> format=<sample format> channels=<number of channels> rate=<sample rate> fragments=<number of fragments> fragment_size=<fragment size>")
+
+#define DEFAULT_SINK_NAME "wave_output"
+#define DEFAULT_SOURCE_NAME "wave_input"
+
+struct userdata {
+    pa_sink *sink;
+    pa_source *source;
+    pa_core *core;
+    pa_time_event *event;
+    pa_defer_event *defer;
+    pa_usec_t poll_timeout;
+
+    uint32_t fragments, fragment_size;
+
+    uint32_t free_ofrags, free_ifrags;
+
+    DWORD written_bytes;
+
+    int cur_ohdr, cur_ihdr;
+    unsigned int oremain;
+    WAVEHDR *ohdrs, *ihdrs;
+    pa_memchunk silence;
+
+    HWAVEOUT hwo;
+    HWAVEIN hwi;
+    pa_module *module;
+
+    CRITICAL_SECTION crit;
+};
+
+static const char* const valid_modargs[] = {
+    "sink_name",
+    "source_name",
+    "record",
+    "playback",
+    "fragments",
+    "fragment_size",
+    "format",
+    "rate",
+    "channels",
+    NULL
+};
+
+static void update_usage(struct userdata *u) {
+   pa_module_set_used(u->module,
+                      (u->sink ? pa_idxset_size(u->sink->inputs) : 0) +
+                      (u->sink ? pa_idxset_size(u->sink->monitor_source->outputs) : 0) +
+                      (u->source ? pa_idxset_size(u->source->outputs) : 0));
+}
+
+static void do_write(struct userdata *u)
+{
+    uint32_t free_frags, remain;
+    pa_memchunk memchunk, *cur_chunk;
+    WAVEHDR *hdr;
+    MMRESULT res;
+
+    if (!u->sink)
+        return;
+
+    EnterCriticalSection(&u->crit);
+
+    free_frags = u->free_ofrags;
+    u->free_ofrags = 0;
+
+    LeaveCriticalSection(&u->crit);
+
+    while (free_frags) {
+        hdr = &u->ohdrs[u->cur_ohdr];
+        if (hdr->dwFlags & WHDR_PREPARED)
+            waveOutUnprepareHeader(u->hwo, hdr, sizeof(WAVEHDR));
+
+        remain = u->oremain;
+        while (remain) {
+            cur_chunk = &memchunk;
+
+            if (pa_sink_render(u->sink, remain, cur_chunk) < 0) {
+                /*
+                 * Don't fill with silence unless we're getting close to
+                 * underflowing.
+                 */
+                if (free_frags > u->fragments/2)
+                    cur_chunk = &u->silence;
+                else {
+                    EnterCriticalSection(&u->crit);
+
+                    u->free_ofrags += free_frags;
+
+                    LeaveCriticalSection(&u->crit);
+
+                    u->oremain = remain;
+                    return;
+                }
+            }
+
+            assert(cur_chunk->memblock);
+            assert(cur_chunk->memblock->data);
+            assert(cur_chunk->length);
+
+            memcpy(hdr->lpData + u->fragment_size - remain,
+                (char*)cur_chunk->memblock->data + cur_chunk->index,
+                (cur_chunk->length < remain)?cur_chunk->length:remain);
+
+            remain -= (cur_chunk->length < remain)?cur_chunk->length:remain;
+
+            if (cur_chunk != &u->silence) {
+                pa_memblock_unref(cur_chunk->memblock);
+                cur_chunk->memblock = NULL;
+            }
+        }
+
+        res = waveOutPrepareHeader(u->hwo, hdr, sizeof(WAVEHDR));
+        if (res != MMSYSERR_NOERROR) {
+            pa_log_error(__FILE__ ": ERROR: Unable to prepare waveOut block: %d\n",
+                res);
+        }
+        res = waveOutWrite(u->hwo, hdr, sizeof(WAVEHDR));
+        if (res != MMSYSERR_NOERROR) {
+            pa_log_error(__FILE__ ": ERROR: Unable to write waveOut block: %d\n",
+                res);
+        }
+        
+        u->written_bytes += u->fragment_size;
+
+        free_frags--;
+        u->cur_ohdr++;
+        u->cur_ohdr %= u->fragments;
+        u->oremain = u->fragment_size;
+    }
+}
+
+static void do_read(struct userdata *u)
+{
+    uint32_t free_frags;
+    pa_memchunk memchunk;
+    WAVEHDR *hdr;
+    MMRESULT res;
+
+    if (!u->source)
+        return;
+
+    EnterCriticalSection(&u->crit);
+
+    free_frags = u->free_ifrags;
+    u->free_ifrags = 0;
+
+    LeaveCriticalSection(&u->crit);
+
+    while (free_frags) {
+        hdr = &u->ihdrs[u->cur_ihdr];
+        if (hdr->dwFlags & WHDR_PREPARED)
+            waveInUnprepareHeader(u->hwi, hdr, sizeof(WAVEHDR));
+
+        if (hdr->dwBytesRecorded) {
+            memchunk.memblock = pa_memblock_new(hdr->dwBytesRecorded, u->core->memblock_stat);
+            assert(memchunk.memblock);
+
+            memcpy((char*)memchunk.memblock->data, hdr->lpData, hdr->dwBytesRecorded);
+
+            memchunk.length = memchunk.memblock->length = hdr->dwBytesRecorded;
+            memchunk.index = 0;
+
+            pa_source_post(u->source, &memchunk);
+            pa_memblock_unref(memchunk.memblock);
+        }
+
+        res = waveInPrepareHeader(u->hwi, hdr, sizeof(WAVEHDR));
+        if (res != MMSYSERR_NOERROR) {
+            pa_log_error(__FILE__ ": ERROR: Unable to prepare waveIn block: %d\n",
+                res);
+        }
+        res = waveInAddBuffer(u->hwi, hdr, sizeof(WAVEHDR));
+        if (res != MMSYSERR_NOERROR) {
+            pa_log_error(__FILE__ ": ERROR: Unable to add waveIn block: %d\n",
+                res);
+        }
+        
+        free_frags--;
+        u->cur_ihdr++;
+        u->cur_ihdr %= u->fragments;
+    }
+}
+
+static void poll_cb(pa_mainloop_api*a, pa_time_event *e, const struct timeval *tv, void *userdata) {
+    struct userdata *u = userdata;
+    struct timeval ntv;
+
+    assert(u);
+
+    update_usage(u);
+
+    do_write(u);
+    do_read(u);
+
+    pa_gettimeofday(&ntv);
+    pa_timeval_add(&ntv, u->poll_timeout);
+
+    a->time_restart(e, &ntv);
+}
+
+static void defer_cb(pa_mainloop_api*a, pa_defer_event *e, void *userdata) {
+    struct userdata *u = userdata;
+
+    assert(u);
+
+    a->defer_enable(e, 0);
+
+    do_write(u);
+    do_read(u);
+}
+
+static void CALLBACK chunk_done_cb(HWAVEOUT hwo, UINT msg, DWORD_PTR inst, DWORD param1, DWORD param2) {
+    struct userdata *u = (struct userdata *)inst;
+
+    if (msg != WOM_DONE)
+        return;
+
+    EnterCriticalSection(&u->crit);
+
+    u->free_ofrags++;
+    assert(u->free_ofrags <= u->fragments);
+
+    LeaveCriticalSection(&u->crit);
+}
+
+static void CALLBACK chunk_ready_cb(HWAVEIN hwi, UINT msg, DWORD_PTR inst, DWORD param1, DWORD param2) {
+    struct userdata *u = (struct userdata *)inst;
+
+    if (msg != WIM_DATA)
+        return;
+
+    EnterCriticalSection(&u->crit);
+
+    u->free_ifrags++;
+    assert(u->free_ifrags <= u->fragments);
+
+    LeaveCriticalSection(&u->crit);
+}
+
+static pa_usec_t sink_get_latency_cb(pa_sink *s) {
+    struct userdata *u = s->userdata;
+    uint32_t free_frags;
+    MMTIME mmt;
+    assert(s && u && u->sink);
+
+    memset(&mmt, 0, sizeof(mmt));
+    mmt.wType = TIME_BYTES;
+    if (waveOutGetPosition(u->hwo, &mmt, sizeof(mmt)) == MMSYSERR_NOERROR)
+        return pa_bytes_to_usec(u->written_bytes - mmt.u.cb, &s->sample_spec);
+    else {
+        EnterCriticalSection(&u->crit);
+
+        free_frags = u->free_ofrags;
+
+        LeaveCriticalSection(&u->crit);
+
+        return pa_bytes_to_usec((u->fragments - free_frags) * u->fragment_size,
+                              &s->sample_spec);
+    }
+}
+
+static pa_usec_t source_get_latency_cb(pa_source *s) {
+    pa_usec_t r = 0;
+    struct userdata *u = s->userdata;
+    uint32_t free_frags;
+    assert(s && u && u->sink);
+
+    EnterCriticalSection(&u->crit);
+
+    free_frags = u->free_ifrags;
+
+    LeaveCriticalSection(&u->crit);
+
+    r += pa_bytes_to_usec((free_frags + 1) * u->fragment_size, &s->sample_spec);
+
+    fprintf(stderr, "Latency: %d us\n", (int)r);
+
+    return r;
+}
+
+static void notify_sink_cb(pa_sink *s) {
+    struct userdata *u = s->userdata;
+    assert(u);
+
+    u->core->mainloop->defer_enable(u->defer, 1);
+}
+
+static void notify_source_cb(pa_source *s) {
+    struct userdata *u = s->userdata;
+    assert(u);
+
+    u->core->mainloop->defer_enable(u->defer, 1);
+}
+
+static int ss_to_waveformat(pa_sample_spec *ss, LPWAVEFORMATEX wf) {
+    wf->wFormatTag = WAVE_FORMAT_PCM;
+
+    if (ss->channels > 2) {
+        pa_log_error(__FILE__": ERROR: More than two channels not supported.\n");
+        return -1;
+    }
+
+    wf->nChannels = ss->channels;
+
+    switch (ss->rate) {
+    case 8000:
+    case 11025:
+    case 22005:
+    case 44100:
+        break;
+    default:
+        pa_log_error(__FILE__": ERROR: Unsupported sample rate.\n");
+        return -1;
+    }
+
+    wf->nSamplesPerSec = ss->rate;
+
+    if (ss->format == PA_SAMPLE_U8)
+        wf->wBitsPerSample = 8;
+    else if (ss->format == PA_SAMPLE_S16NE)
+        wf->wBitsPerSample = 16;
+    else {
+        pa_log_error(__FILE__": ERROR: Unsupported sample format.\n");
+        return -1;
+    }
+
+    wf->nBlockAlign = wf->nChannels * wf->wBitsPerSample/8;
+    wf->nAvgBytesPerSec = wf->nSamplesPerSec * wf->nBlockAlign;
+
+    wf->cbSize = 0;
+
+    return 0;
+}
+
+int pa__init(pa_core *c, pa_module*m) {
+    struct userdata *u = NULL;
+    HWAVEOUT hwo = INVALID_HANDLE_VALUE;
+    HWAVEIN hwi = INVALID_HANDLE_VALUE;
+    WAVEFORMATEX wf;
+    int nfrags, frag_size;
+    int record = 1, playback = 1;
+    pa_sample_spec ss;
+    pa_modargs *ma = NULL;
+    unsigned int i;
+    struct timeval tv;
+
+    assert(c && m);
+
+    if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+        pa_log(__FILE__": failed to parse module arguments.\n");
+        goto fail;
+    }
+
+    if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
+        pa_log(__FILE__": record= and playback= expect boolean argument.\n");
+        goto fail;
+    }
+
+    if (!playback && !record) {
+        pa_log(__FILE__": neither playback nor record enabled for device.\n");
+        goto fail;
+    }
+
+    nfrags = 20;
+    frag_size = 1024;
+    if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
+        pa_log(__FILE__": failed to parse fragments arguments\n");
+        goto fail;
+    }
+
+    ss = c->default_sample_spec;
+    if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
+        pa_log(__FILE__": failed to parse sample specification\n");
+        goto fail;
+    }
+
+    if (ss_to_waveformat(&ss, &wf) < 0)
+        goto fail;
+
+    u = pa_xmalloc(sizeof(struct userdata));
+
+    if (record) {
+        if (waveInOpen(&hwi, WAVE_MAPPER, &wf, (DWORD_PTR)chunk_ready_cb, (DWORD_PTR)u, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
+            goto fail;
+        if (waveInStart(hwi) != MMSYSERR_NOERROR)
+            goto fail;
+        pa_log_debug(__FILE__": Opened waveIn subsystem.\n");
+    }
+
+    if (playback) {
+        if (waveOutOpen(&hwo, WAVE_MAPPER, &wf, (DWORD_PTR)chunk_done_cb, (DWORD_PTR)u, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
+            goto fail;
+        pa_log_debug(__FILE__": Opened waveOut subsystem.\n");
+    }
+
+    InitializeCriticalSection(&u->crit);
+
+    if (hwi != INVALID_HANDLE_VALUE) {
+        u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL);
+        assert(u->source);
+        u->source->userdata = u;
+        u->source->notify = notify_source_cb;
+        u->source->get_latency = source_get_latency_cb;
+        pa_source_set_owner(u->source, m);
+        u->source->description = pa_sprintf_malloc("Windows waveIn PCM");
+    } else
+        u->source = NULL;
+
+    if (hwo != INVALID_HANDLE_VALUE) {
+        u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, NULL);
+        assert(u->sink);
+        u->sink->notify = notify_sink_cb;
+        u->sink->get_latency = sink_get_latency_cb;
+        u->sink->userdata = u;
+        pa_sink_set_owner(u->sink, m);
+        u->sink->description = pa_sprintf_malloc("Windows waveOut PCM");
+    } else
+        u->sink = NULL;
+
+    assert(u->source || u->sink);
+
+    u->core = c;
+    u->hwi = hwi;
+    u->hwo = hwo;
+
+    u->fragments = nfrags;
+    u->free_ifrags = u->fragments;
+    u->free_ofrags = u->fragments;
+    u->fragment_size = frag_size - (frag_size % pa_frame_size(&ss));
+
+    u->written_bytes = 0;
+
+    u->oremain = u->fragment_size;
+
+    u->poll_timeout = pa_bytes_to_usec(u->fragments * u->fragment_size / 3, &ss);
+
+    pa_gettimeofday(&tv);
+    pa_timeval_add(&tv, u->poll_timeout);
+
+    u->event = c->mainloop->time_new(c->mainloop, &tv, poll_cb, u);
+    assert(u->event);
+
+    u->defer = c->mainloop->defer_new(c->mainloop, defer_cb, u);
+    assert(u->defer);
+    c->mainloop->defer_enable(u->defer, 0);
+
+    u->cur_ihdr = 0;
+    u->cur_ohdr = 0;
+    u->ihdrs = pa_xmalloc0(sizeof(WAVEHDR) * u->fragments);
+    assert(u->ihdrs);
+    u->ohdrs = pa_xmalloc0(sizeof(WAVEHDR) * u->fragments);
+    assert(u->ohdrs);
+    for (i = 0;i < u->fragments;i++) {
+        u->ihdrs[i].dwBufferLength = u->fragment_size;
+        u->ohdrs[i].dwBufferLength = u->fragment_size;
+        u->ihdrs[i].lpData = pa_xmalloc(u->fragment_size);
+        assert(u->ihdrs);
+        u->ohdrs[i].lpData = pa_xmalloc(u->fragment_size);
+        assert(u->ohdrs);
+    }
+    
+    u->silence.length = u->fragment_size;
+    u->silence.memblock = pa_memblock_new(u->silence.length, u->core->memblock_stat);
+    assert(u->silence.memblock);
+    pa_silence_memblock(u->silence.memblock, &ss);
+    u->silence.index = 0;
+
+    u->module = m;
+    m->userdata = u;
+
+    pa_modargs_free(ma);
+
+    return 0;
+
+fail:
+   if (hwi != INVALID_HANDLE_VALUE)
+        waveInClose(hwi);
+
+   if (hwo != INVALID_HANDLE_VALUE)
+        waveOutClose(hwo);
+
+    if (u)
+        pa_xfree(u);
+
+    if (ma)
+        pa_modargs_free(ma);
+    
+    return -1;
+}
+
+void pa__done(pa_core *c, pa_module*m) {
+    struct userdata *u;
+    unsigned int i;
+
+    assert(c && m);
+
+    if (!(u = m->userdata))
+        return;
+    
+    if (u->event)
+        c->mainloop->time_free(u->event);
+
+    if (u->defer)
+        c->mainloop->defer_free(u->defer);
+
+    if (u->sink) {
+        pa_sink_disconnect(u->sink);
+        pa_sink_unref(u->sink);
+    }
+    
+    if (u->source) {
+        pa_source_disconnect(u->source);
+        pa_source_unref(u->source);
+    }
+    
+    if (u->hwi != INVALID_HANDLE_VALUE) {
+        waveInReset(u->hwi);
+        waveInClose(u->hwi);
+    }
+
+    if (u->hwo != INVALID_HANDLE_VALUE) {
+        waveOutReset(u->hwo);
+        waveOutClose(u->hwo);
+    }
+
+    for (i = 0;i < u->fragments;i++) {
+        pa_xfree(u->ihdrs[i].lpData);
+        pa_xfree(u->ohdrs[i].lpData);
+    }
+
+    pa_xfree(u->ihdrs);
+    pa_xfree(u->ohdrs);
+
+    DeleteCriticalSection(&u->crit);
+    
+    pa_xfree(u);
+}