diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/output/win32_output_plugin.c | 296 | ||||
| -rw-r--r-- | src/output_list.c | 4 |
2 files changed, 300 insertions, 0 deletions
diff --git a/src/output/win32_output_plugin.c b/src/output/win32_output_plugin.c new file mode 100644 index 000000000..970c62d79 --- /dev/null +++ b/src/output/win32_output_plugin.c @@ -0,0 +1,296 @@ +/* + * Copyright (C) 2003-2010 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "output_api.h" +#include "pcm_buffer.h" + +#include <windows.h> + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "win32_output" + +struct win32_buffer { + struct pcm_buffer buffer; + + WAVEHDR hdr; +}; + +struct win32_output { + HWAVEOUT handle; + + /** + * This event is triggered by Windows when a buffer is + * finished. + */ + HANDLE event; + + struct win32_buffer buffers[8]; + unsigned next_buffer; +}; + +/** + * The quark used for GError.domain. + */ +static inline GQuark +win32_output_quark(void) +{ + return g_quark_from_static_string("win32_output"); +} + +static bool +win32_output_test_default_device(void) +{ + /* we assume that Wave is always available */ + return true; +} + +static void * +win32_output_init(G_GNUC_UNUSED const struct audio_format *audio_format, + G_GNUC_UNUSED const struct config_param *param, + G_GNUC_UNUSED GError **error) +{ + struct win32_output *wo = g_new(struct win32_output, 1); + + return wo; +} + +static void +win32_output_finish(void *data) +{ + struct win32_output *wo = data; + + g_free(wo); +} + +static bool +win32_output_open(void *data, struct audio_format *audio_format, + GError **error_r) +{ + struct win32_output *wo = data; + + wo->event = CreateEvent(NULL, false, false, NULL); + if (wo->event == NULL) { + g_set_error(error_r, win32_output_quark(), 0, + "CreateEvent() failed"); + return false; + } + + switch (audio_format->format) { + case SAMPLE_FORMAT_S8: + case SAMPLE_FORMAT_S16: + break; + + case SAMPLE_FORMAT_S24: + case SAMPLE_FORMAT_S24_P32: + case SAMPLE_FORMAT_S32: + case SAMPLE_FORMAT_UNDEFINED: + /* we havn't tested formats other than S16 */ + audio_format->format = SAMPLE_FORMAT_S16; + break; + } + + if (audio_format->channels > 2) + /* same here: more than stereo was not tested */ + audio_format->channels = 2; + + WAVEFORMATEX format; + format.wFormatTag = WAVE_FORMAT_PCM; + format.nChannels = audio_format->channels; + format.nSamplesPerSec = audio_format->sample_rate; + format.nBlockAlign = audio_format_frame_size(audio_format); + format.nAvgBytesPerSec = format.nSamplesPerSec * format.nBlockAlign; + format.wBitsPerSample = audio_format_sample_size(audio_format) * 8; + format.cbSize = 0; + + MMRESULT result = waveOutOpen(&wo->handle, WAVE_MAPPER, &format, + (DWORD_PTR)wo->event, 0, CALLBACK_EVENT); + if (result != MMSYSERR_NOERROR) { + CloseHandle(wo->event); + g_set_error(error_r, win32_output_quark(), result, + "waveOutOpen() failed"); + return false; + } + + for (unsigned i = 0; i < G_N_ELEMENTS(wo->buffers); ++i) { + pcm_buffer_init(&wo->buffers[i].buffer); + memset(&wo->buffers[i].hdr, 0, sizeof(wo->buffers[i].hdr)); + } + + wo->next_buffer = 0; + + return true; +} + +static void +win32_output_close(void *data) +{ + struct win32_output *wo = data; + + for (unsigned i = 0; i < G_N_ELEMENTS(wo->buffers); ++i) + pcm_buffer_deinit(&wo->buffers[i].buffer); + + waveOutClose(wo->handle); + + CloseHandle(wo->event); +} + +/** + * Copy data into a buffer, and prepare the wave header. + */ +static bool +win32_set_buffer(struct win32_output *wo, struct win32_buffer *buffer, + const void *data, size_t size, + GError **error_r) +{ + void *dest = pcm_buffer_get(&buffer->buffer, size); + if (dest == NULL) { + g_set_error(error_r, win32_output_quark(), 0, + "Out of memory"); + return false; + } + + memcpy(dest, data, size); + + memset(&buffer->hdr, 0, sizeof(buffer->hdr)); + buffer->hdr.lpData = dest; + buffer->hdr.dwBufferLength = size; + + MMRESULT result = waveOutPrepareHeader(wo->handle, &buffer->hdr, + sizeof(buffer->hdr)); + if (result != MMSYSERR_NOERROR) { + g_set_error(error_r, win32_output_quark(), result, + "waveOutPrepareHeader() failed"); + return false; + } + + return true; +} + +/** + * Wait until the buffer is finished. + */ +static bool +win32_drain_buffer(struct win32_output *wo, struct win32_buffer *buffer, + GError **error_r) +{ + if ((buffer->hdr.dwFlags & WHDR_DONE) == WHDR_DONE) + /* already finished */ + return true; + + while (true) { + MMRESULT result = waveOutUnprepareHeader(wo->handle, + &buffer->hdr, + sizeof(buffer->hdr)); + if (result == MMSYSERR_NOERROR) + return true; + else if (result != WAVERR_STILLPLAYING) { + g_set_error(error_r, win32_output_quark(), result, + "waveOutUnprepareHeader() failed"); + return false; + } + + /* wait some more */ + WaitForSingleObject(wo->event, INFINITE); + } +} + +static size_t +win32_output_play(void *data, const void *chunk, size_t size, GError **error_r) +{ + struct win32_output *wo = data; + + /* get the next buffer from the ring and prepare it */ + struct win32_buffer *buffer = &wo->buffers[wo->next_buffer]; + if (!win32_drain_buffer(wo, buffer, error_r) || + !win32_set_buffer(wo, buffer, chunk, size, error_r)) + return 0; + + /* enqueue the buffer */ + MMRESULT result = waveOutWrite(wo->handle, &buffer->hdr, + sizeof(buffer->hdr)); + if (result != MMSYSERR_NOERROR) { + waveOutUnprepareHeader(wo->handle, &buffer->hdr, + sizeof(buffer->hdr)); + g_set_error(error_r, win32_output_quark(), result, + "waveOutWrite() failed"); + return 0; + } + + /* mark our buffer as "used" */ + wo->next_buffer = (wo->next_buffer + 1) % + G_N_ELEMENTS(wo->buffers); + + return size; +} + +static bool +win32_drain_all_buffers(struct win32_output *wo, GError **error_r) +{ + for (unsigned i = wo->next_buffer; i < G_N_ELEMENTS(wo->buffers); ++i) + if (!win32_drain_buffer(wo, &wo->buffers[i], error_r)) + return false; + + for (unsigned i = 0; i < wo->next_buffer; ++i) + if (!win32_drain_buffer(wo, &wo->buffers[i], error_r)) + return false; + + return true; +} + +static void +win32_stop(struct win32_output *wo) +{ + waveOutReset(wo->handle); + + for (unsigned i = 0; i < G_N_ELEMENTS(wo->buffers); ++i) { + struct win32_buffer *buffer = &wo->buffers[i]; + waveOutUnprepareHeader(wo->handle, &buffer->hdr, + sizeof(buffer->hdr)); + } +} + +static void +win32_output_drain(void *data) +{ + struct win32_output *wo = data; + + if (!win32_drain_all_buffers(wo, NULL)) + win32_stop(wo); +} + +static void +win32_output_cancel(void *data) +{ + struct win32_output *wo = data; + + win32_stop(wo); +} + +const struct audio_output_plugin win32_output_plugin = { + .name = "win32", + .test_default_device = win32_output_test_default_device, + .init = win32_output_init, + .finish = win32_output_finish, + .open = win32_output_open, + .close = win32_output_close, + .play = win32_output_play, + .drain = win32_output_drain, + .cancel = win32_output_cancel, +}; diff --git a/src/output_list.c b/src/output_list.c index d94749e86..c5fd05b1d 100644 --- a/src/output_list.c +++ b/src/output_list.c @@ -36,6 +36,7 @@ extern const struct audio_output_plugin mvp_output_plugin; extern const struct audio_output_plugin jack_output_plugin; extern const struct audio_output_plugin httpd_output_plugin; extern const struct audio_output_plugin recorder_output_plugin; +extern const struct audio_output_plugin win32_output_plugin; const struct audio_output_plugin *audio_output_plugins[] = { #ifdef HAVE_SHOUT @@ -81,6 +82,9 @@ const struct audio_output_plugin *audio_output_plugins[] = { #ifdef ENABLE_RECORDER_OUTPUT &recorder_output_plugin, #endif +#ifdef ENABLE_WIN32_OUTPUT + &win32_output_plugin, +#endif NULL }; |