1 files changed, 344 insertions, 0 deletions
diff --git a/src/output/mvp_output_plugin.c b/src/output/mvp_output_plugin.c
new file mode 100644
index 000000000..aec09248f
--- /dev/null
+++ b/src/output/mvp_output_plugin.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2003-2011 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.
+ */
+
+/*
+ * Media MVP audio output based on code from MVPMC project:
+ * http://mvpmc.sourceforge.net/
+ */
+
+#include "config.h"
+#include "mvp_output_plugin.h"
+#include "output_api.h"
+#include "fd_util.h"
+
+#include <glib.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "mvp"
+
+typedef struct {
+	unsigned long dsp_status;
+	unsigned long stream_decode_type;
+	unsigned long sample_rate;
+	unsigned long bit_rate;
+	unsigned long raw[64 / sizeof(unsigned long)];
+} aud_status_t;
+
+#define MVP_SET_AUD_STOP		_IOW('a',1,int)
+#define MVP_SET_AUD_PLAY		_IOW('a',2,int)
+#define MVP_SET_AUD_PAUSE	_IOW('a',3,int)
+#define MVP_SET_AUD_UNPAUSE	_IOW('a',4,int)
+#define MVP_SET_AUD_SRC		_IOW('a',5,int)
+#define MVP_SET_AUD_MUTE		_IOW('a',6,int)
+#define MVP_SET_AUD_BYPASS	_IOW('a',8,int)
+#define MVP_SET_AUD_CHANNEL	_IOW('a',9,int)
+#define MVP_GET_AUD_STATUS	_IOR('a',10,aud_status_t)
+#define MVP_SET_AUD_VOLUME	_IOW('a',13,int)
+#define MVP_GET_AUD_VOLUME	_IOR('a',14,int)
+#define MVP_SET_AUD_STREAMTYPE	_IOW('a',15,int)
+#define MVP_SET_AUD_FORMAT	_IOW('a',16,int)
+#define MVP_GET_AUD_SYNC		_IOR('a',21,pts_sync_data_t*)
+#define MVP_SET_AUD_STC		_IOW('a',22,long long int *)
+#define MVP_SET_AUD_SYNC		_IOW('a',23,int)
+#define MVP_SET_AUD_END_STREAM	_IOW('a',25,int)
+#define MVP_SET_AUD_RESET	_IOW('a',26,int)
+#define MVP_SET_AUD_DAC_CLK	_IOW('a',27,int)
+#define MVP_GET_AUD_REGS		_IOW('a',28,aud_ctl_regs_t*)
+
+struct mvp_data {
+	struct audio_output base;
+
+	struct audio_format audio_format;
+	int fd;
+};
+
+static const unsigned mvp_sample_rates[][3] = {
+	{9, 8000, 32000},
+	{10, 11025, 44100},
+	{11, 12000, 48000},
+	{1, 16000, 32000},
+	{2, 22050, 44100},
+	{3, 24000, 48000},
+	{5, 32000, 32000},
+	{0, 44100, 44100},
+	{7, 48000, 48000},
+	{13, 64000, 32000},
+	{14, 88200, 44100},
+	{15, 96000, 48000}
+};
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+mvp_output_quark(void)
+{
+	return g_quark_from_static_string("mvp_output");
+}
+
+/**
+ * Translate a sample rate to a MVP sample rate.
+ *
+ * @param sample_rate the sample rate in Hz
+ */
+static unsigned
+mvp_find_sample_rate(unsigned sample_rate)
+{
+	for (unsigned i = 0; i < G_N_ELEMENTS(mvp_sample_rates); ++i)
+		if (mvp_sample_rates[i][1] == sample_rate)
+			return mvp_sample_rates[i][0];
+
+	return (unsigned)-1;
+}
+
+static bool
+mvp_output_test_default_device(void)
+{
+	int fd;
+
+	fd = open_cloexec("/dev/adec_pcm", O_WRONLY, 0);
+
+	if (fd >= 0) {
+		close(fd);
+		return true;
+	}
+
+	g_warning("Error opening PCM device \"/dev/adec_pcm\": %s\n",
+		  strerror(errno));
+
+	return false;
+}
+
+static struct audio_output *
+mvp_output_init(G_GNUC_UNUSED const struct config_param *param, GError **error)
+{
+	struct mvp_data *md = g_new(struct mvp_data, 1);
+
+	if (!ao_base_init(&md->base, &mvp_output_plugin, param, error)) {
+		g_free(md);
+		return NULL;
+	}
+
+	md->fd = -1;
+
+	return &md->base;
+}
+
+static void
+mvp_output_finish(struct audio_output *ao)
+{
+	struct mvp_data *md = (struct mvp_data *)ao;
+	ao_base_finish(&md->base);
+	g_free(md);
+}
+
+static bool
+mvp_set_pcm_params(struct mvp_data *md, struct audio_format *audio_format,
+		   GError **error)
+{
+	unsigned mix[5];
+
+	switch (audio_format->channels) {
+	case 1:
+		mix[0] = 1;
+		break;
+
+	case 2:
+		mix[0] = 0;
+		break;
+
+	default:
+		g_debug("unsupported channel count %u - falling back to stereo",
+			audio_format->channels);
+		audio_format->channels = 2;
+		mix[0] = 0;
+		break;
+	}
+
+	/* 0,1=24bit(24) , 2,3=16bit */
+	switch (audio_format->format) {
+	case SAMPLE_FORMAT_S16:
+		mix[1] = 2;
+		break;
+
+	case SAMPLE_FORMAT_S24_P32:
+		mix[1] = 0;
+		break;
+
+	default:
+		g_debug("unsupported sample format %s - falling back to 16 bit",
+			sample_format_to_string(audio_format->format));
+		audio_format->format = SAMPLE_FORMAT_S16;
+		mix[1] = 2;
+		break;
+	}
+
+	mix[3] = 0;	/* stream type? */
+	mix[4] = G_BYTE_ORDER == G_LITTLE_ENDIAN;
+
+	/*
+	 * if there is an exact match for the frequency, use it.
+	 */
+	mix[2] = mvp_find_sample_rate(audio_format->sample_rate);
+	if (mix[2] == (unsigned)-1) {
+		g_set_error(error, mvp_output_quark(), 0,
+			    "Can not find suitable output frequency for %u",
+			    audio_format->sample_rate);
+		return false;
+	}
+
+	if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Can not set audio format");
+		return false;
+	}
+
+	if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Can not set audio sync");
+		return false;
+	}
+
+	if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Can not set audio play mode");
+		return false;
+	}
+
+	return true;
+}
+
+static bool
+mvp_output_open(struct audio_output *ao, struct audio_format *audio_format,
+		GError **error)
+{
+	struct mvp_data *md = (struct mvp_data *)ao;
+	long long int stc = 0;
+	int mix[5] = { 0, 2, 7, 1, 0 };
+	bool success;
+
+	md->fd = open_cloexec("/dev/adec_pcm", O_RDWR | O_NONBLOCK, 0);
+	if (md->fd < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Error opening /dev/adec_pcm: %s",
+			    strerror(errno));
+		return false;
+	}
+	if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Error setting audio source: %s",
+			    strerror(errno));
+		return false;
+	}
+	if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Error setting audio streamtype: %s",
+			    strerror(errno));
+		return false;
+	}
+	if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Error setting audio format: %s",
+			    strerror(errno));
+		return false;
+	}
+	ioctl(md->fd, MVP_SET_AUD_STC, &stc);
+	if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0) {
+		g_set_error(error, mvp_output_quark(), errno,
+			    "Error setting audio streamtype: %s",
+			    strerror(errno));
+		return false;
+	}
+
+	success = mvp_set_pcm_params(md, audio_format, error);
+	if (!success)
+		return false;
+
+	md->audio_format = *audio_format;
+	return true;
+}
+
+static void mvp_output_close(struct audio_output *ao)
+{
+	struct mvp_data *md = (struct mvp_data *)ao;
+	if (md->fd >= 0)
+		close(md->fd);
+	md->fd = -1;
+}
+
+static void mvp_output_cancel(struct audio_output *ao)
+{
+	struct mvp_data *md = (struct mvp_data *)ao;
+	if (md->fd >= 0) {
+		ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
+		close(md->fd);
+		md->fd = -1;
+	}
+}
+
+static size_t
+mvp_output_play(struct audio_output *ao, const void *chunk, size_t size,
+		GError **error)
+{
+	struct mvp_data *md = (struct mvp_data *)ao;
+	ssize_t ret;
+
+	/* reopen the device since it was closed by dropBufferedAudio */
+	if (md->fd < 0) {
+		bool success;
+
+		success = mvp_output_open(ao, &md->audio_format, error);
+		if (!success)
+			return 0;
+	}
+
+	while (true) {
+		ret = write(md->fd, chunk, size);
+		if (ret > 0)
+			return (size_t)ret;
+
+		if (ret < 0) {
+			if (errno == EINTR)
+				continue;
+
+			g_set_error(error, mvp_output_quark(), errno,
+				    "Failed to write: %s", strerror(errno));
+			return 0;
+		}
+	}
+}
+
+const struct audio_output_plugin mvp_output_plugin = {
+	.name = "mvp",
+	.test_default_device = mvp_output_test_default_device,
+	.init = mvp_output_init,
+	.finish = mvp_output_finish,
+	.open = mvp_output_open,
+	.close = mvp_output_close,
+	.play = mvp_output_play,
+	.cancel = mvp_output_cancel,
+};