/* XMMS2 - X Music Multiplexer System * Copyright (C) 2003-2007 XMMS2 Team * * PLUGINS ARE NOT CONSIDERED TO BE DERIVED WORK !!! * * This library 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 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. */ #include "xmms/xmms_outputplugin.h" #include "xmms/xmms_log.h" #include #include #include /* * Defines */ #define BLOCK_SIZE 16384 #define NUM_BLOCKS 6 /* * Type definitions */ typedef struct xmms_waveout_data_St { HWAVEOUT waveout; WAVEHDR *blocks; gint current_block; gint free_blocks; GMutex *mutex; GCond *cond; } xmms_waveout_data_t; /* * Function prototypes */ static gboolean xmms_waveout_plugin_setup (xmms_output_plugin_t *plugin); static gboolean xmms_waveout_new (xmms_output_t *output); static void xmms_waveout_destroy (xmms_output_t *output); static gboolean xmms_waveout_open (xmms_output_t *output); static void xmms_waveout_close (xmms_output_t *output); static void xmms_waveout_flush (xmms_output_t *output); static gboolean xmms_waveout_format_set (xmms_output_t *output, const xmms_stream_type_t *format); static void xmms_waveout_write (xmms_output_t *output, gpointer buffer, gint len, xmms_error_t *err); static guint xmms_waveout_buffer_bytes_get (xmms_output_t *output); static void CALLBACK on_block_done (HWAVEOUT hWaveOut, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2); /* * Plugin header */ XMMS_OUTPUT_PLUGIN ("waveout", "WaveOut Output", XMMS_VERSION, "WaveOut Output plugin", xmms_waveout_plugin_setup); static gboolean xmms_waveout_plugin_setup (xmms_output_plugin_t *plugin) { xmms_output_methods_t methods; XMMS_OUTPUT_METHODS_INIT (methods); methods.new = xmms_waveout_new; methods.destroy = xmms_waveout_destroy; methods.open = xmms_waveout_open; methods.close = xmms_waveout_close; methods.flush = xmms_waveout_flush; methods.format_set = xmms_waveout_format_set; methods.write = xmms_waveout_write; methods.latency_get = xmms_waveout_buffer_bytes_get; xmms_output_plugin_methods_set (plugin, &methods); return TRUE; } /* * Member functions */ static gboolean xmms_waveout_new (xmms_output_t *output) { xmms_waveout_data_t *data; guchar *chunks; gint i; g_return_val_if_fail (output, FALSE); data = g_new0 (xmms_waveout_data_t, 1); g_return_val_if_fail (data, FALSE); chunks = g_malloc ((sizeof (WAVEHDR) + BLOCK_SIZE) * NUM_BLOCKS); if (!chunks) { return FALSE; } data->blocks = (WAVEHDR *) chunks; chunks += sizeof (WAVEHDR) * NUM_BLOCKS; for (i = 0; i < NUM_BLOCKS; i++) { data->blocks[i].lpData = chunks; data->blocks[i].dwBufferLength = BLOCK_SIZE; data->blocks[i].dwFlags = WHDR_DONE; data->blocks[i].dwUser = 0; chunks += BLOCK_SIZE; } data->free_blocks = NUM_BLOCKS; data->current_block = 0; data->mutex = g_mutex_new (); data->cond = g_cond_new (); xmms_output_private_data_set (output, data); xmms_output_format_add (output, XMMS_SAMPLE_FORMAT_S16, 2, 44100); return TRUE; } static void xmms_waveout_destroy (xmms_output_t *output) { xmms_waveout_data_t *data; g_return_if_fail (output); data = xmms_output_private_data_get (output); g_return_if_fail (data); if (data->blocks) { g_free (data->blocks); } if (data->mutex) { g_mutex_free (data->mutex); } if (data->cond) { g_cond_free (data->cond); } g_free (data); } static gboolean xmms_waveout_open (xmms_output_t *output) { xmms_waveout_data_t *data; WAVEFORMATEX fmt; MMRESULT res; gchar buf[128]; g_return_val_if_fail (output, FALSE); data = xmms_output_private_data_get (output); g_return_val_if_fail (data, FALSE); fmt.nSamplesPerSec = 44100; fmt.wBitsPerSample = 16; fmt.nChannels = 2; fmt.cbSize = 0; fmt.wFormatTag = WAVE_FORMAT_PCM; fmt.nBlockAlign = fmt.nChannels * (fmt.wBitsPerSample / 8); fmt.nAvgBytesPerSec = fmt.nSamplesPerSec * fmt.nBlockAlign; res = waveOutOpen (&data->waveout, WAVE_MAPPER, &fmt, (DWORD_PTR) on_block_done, (DWORD_PTR) data, CALLBACK_FUNCTION); if (res != MMSYSERR_NOERROR) { waveOutGetErrorText (res, buf, sizeof (buf)); xmms_log_error ("Unable to open audio device. %s", buf); return FALSE; } return TRUE; } static void xmms_waveout_close (xmms_output_t *output) { xmms_waveout_data_t *data; MMRESULT res; gchar buf[128]; gint i; g_return_if_fail (output); data = xmms_output_private_data_get (output); g_return_if_fail (data); if (!data->waveout) { return; } waveOutReset (data->waveout); for (i = 0; i < NUM_BLOCKS; i++) { if (data->blocks[i].dwFlags & WHDR_PREPARED) { res = waveOutUnprepareHeader (data->waveout, &data->blocks[i], sizeof (WAVEHDR)); if (res != MMSYSERR_NOERROR) { waveOutGetErrorText (res, buf, sizeof (buf)); xmms_log_error ("Could not unprepare header. %s", buf); } } } res = waveOutClose (data->waveout); if (res != MMSYSERR_NOERROR) { waveOutGetErrorText (res, buf, sizeof (buf)); xmms_log_error ("Unable to close the audio device. %s", buf); } data->waveout = NULL; } static void xmms_waveout_flush (xmms_output_t *output) { xmms_waveout_data_t *data; g_return_if_fail (output); data = xmms_output_private_data_get (output); g_return_if_fail (data); if (data->waveout) { waveOutReset (data->waveout); } } static gboolean xmms_waveout_format_set (xmms_output_t *output, const xmms_stream_type_t *format) { /* * Format is locked to 44.1kHz, 16bit stereo. * WaveMapper handles the conversion for now. */ return TRUE; } static void xmms_waveout_write (xmms_output_t *output, gpointer buffer, gint len, xmms_error_t *err) { xmms_waveout_data_t *data; g_return_if_fail (buffer); g_return_if_fail (len > 0); g_return_if_fail (output); data = xmms_output_private_data_get (output); g_return_if_fail (data); g_return_if_fail (data->waveout); while (len > 0) { MMRESULT res; gchar buf[128]; gint remain; /* wait for free blocks */ g_mutex_lock (data->mutex); if (!data->free_blocks) { g_cond_wait (data->cond, data->mutex); } g_mutex_unlock (data->mutex); WAVEHDR *block = &data->blocks[data->current_block]; if (block->dwFlags & WHDR_PREPARED) { res = waveOutUnprepareHeader (data->waveout, block, sizeof (WAVEHDR)); if (res != MMSYSERR_NOERROR) { waveOutGetErrorText (res, buf, sizeof (buf)); xmms_log_error ("Could not unprepare header. %s", buf); } } if (len < (BLOCK_SIZE - block->dwUser)) { memcpy (block->lpData + block->dwUser, buffer, len); block->dwUser += len; break; } remain = BLOCK_SIZE - block->dwUser; memcpy (block->lpData + block->dwUser, buffer, remain); len -= remain; buffer += remain; res = waveOutPrepareHeader (data->waveout, block, sizeof (WAVEHDR)); if (res != MMSYSERR_NOERROR) { waveOutGetErrorText (res, buf, sizeof (buf)); xmms_log_error ("Could not prepare header. %s", buf); break; } res = waveOutWrite (data->waveout, block, sizeof (WAVEHDR)); if (res != MMSYSERR_NOERROR) { gchar buf[128]; waveOutGetErrorText (res, buf, sizeof (buf)); xmms_log_error ("Could not write data to audio device. %s", buf); break; } g_mutex_lock (data->mutex); data->free_blocks--; g_mutex_unlock (data->mutex); data->current_block = (data->current_block + 1) % NUM_BLOCKS; data->blocks[data->current_block].dwUser = 0; } } static guint xmms_waveout_buffer_bytes_get (xmms_output_t *output) { xmms_waveout_data_t *data; guint ret; g_return_val_if_fail (output, 0); data = xmms_output_private_data_get (output); g_return_val_if_fail (data, 0); g_mutex_lock (data->mutex); ret = (NUM_BLOCKS - data->free_blocks) * (BLOCK_SIZE); g_mutex_unlock (data->mutex); return ret; } static void CALLBACK on_block_done (HWAVEOUT hWaveOut,UINT uMsg,DWORD dwInstance, DWORD dwParam1,DWORD dwParam2) { xmms_waveout_data_t *data = (xmms_waveout_data_t *) dwInstance; if (uMsg != WOM_DONE) { return; } g_mutex_lock (data->mutex); data->free_blocks++; g_mutex_unlock (data->mutex); g_cond_signal (data->cond); }