Audio: Added Audio RIL Interface, updated TinyALSA configuration

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

1 files changed, 159 insertions, 0 deletions

diff --git a/audio-ril-interface/audio-ril-interface.cpp b/audio-ril-interface/audio-ril-interface.cpp
new file mode 100644
index 0000000..dba1832
--- /dev/null
+++ b/audio-ril-interface/audio-ril-interface.cpp
@@ -0,0 +1,159 @@
+/**
+ * Audio RIL Interface for GTA04
+ *
+ * Copyright (C) 2012 Paul Kocialkowski <contact@paulk.fr>
+ *
+ * Audio RIL Interface 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Audio RIL Interface 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 Audio RIL Interface.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define LOG_TAG "AudioRILInterface"
+#include <cutils/log.h>
+#include <media/AudioSystem.h>
+#include <tinyalsa/asoundlib.h>
+
+#include <audio_ril_interface.h>
+
+#define DEVICE	"Goldelico GTA04"
+
+/*
+ * Structures
+ */
+
+struct gta04_pdata {
+	struct pcm *voice_pcm;
+	int mode;
+};
+
+/*
+ * Functions
+ */
+
+void *gta04_pdata_create(void)
+{
+	struct gta04_pdata *pdata = NULL;
+
+	pdata = (struct gta04_pdata *) calloc(1, sizeof(struct gta04_pdata));
+	return (void *) pdata;
+}
+
+void gta04_pdata_destroy(void *pdata)
+{
+	if(pdata != NULL)
+		free(pdata);
+}
+
+int gta04_mode(void *pdata, int mode)
+{
+	struct pcm_config config;
+	struct gta04_pdata *gta04_pdata = NULL;
+	void *buffer = NULL;
+	int size = 0;
+
+	if(pdata == NULL)
+		return -1;
+
+	gta04_pdata = (struct gta04_pdata *) pdata;
+
+	if(mode == android::AudioSystem::MODE_IN_CALL && gta04_pdata->mode != android::AudioSystem::MODE_IN_CALL) {
+		LOGD("Starting call, activating voice!");
+
+		/*
+		 * It seems that on GTA04 A4, microphone voice routing to
+		 * the modem only works when a capture channel is active.
+		 * Note that Android will close any existing capture channel.
+		 */
+		memset(&config, 0, sizeof(config));
+
+		config.channels = 2;
+		config.rate = 44100;
+		config.period_size = 1056;
+		config.period_count = 2;
+		config.format = PCM_FORMAT_S16_LE;
+
+		gta04_pdata->voice_pcm = pcm_open(0, 0, PCM_IN, &config);
+		if(!gta04_pdata->voice_pcm || !pcm_is_ready(gta04_pdata->voice_pcm)) {
+			LOGE("Failed to open capture channel!");
+		}
+
+		size = pcm_get_buffer_size(gta04_pdata->voice_pcm);
+		buffer = malloc(size);
+
+		LOGD("Reading one sample");
+
+		pcm_read(gta04_pdata->voice_pcm, buffer, size);
+
+		free(buffer);
+	} else if(mode != android::AudioSystem::MODE_IN_CALL && gta04_pdata->mode == android::AudioSystem::MODE_IN_CALL) {
+		LOGD("Ending call, deactivating voice!");
+
+		if(gta04_pdata->voice_pcm != NULL)
+			pcm_close(gta04_pdata->voice_pcm);
+
+		gta04_pdata->voice_pcm = NULL;
+	}
+
+	gta04_pdata->mode = mode;
+
+	return 0;
+}
+
+int gta04_mic_mute(void *pdata, int mute)
+{
+	return 0;
+}
+
+int gta04_voice_volume(void *pdata, float volume)
+{
+	return 0;
+}
+
+int gta04_routing(void *pdata, int route)
+{
+	return 0;
+}
+
+/*
+ * Interface
+ */
+
+extern "C" {
+
+struct audio_ril_interface gta04_interface = {
+	NULL,
+	gta04_mode,
+	gta04_mic_mute,
+	gta04_voice_volume,
+	gta04_routing
+};
+
+struct audio_ril_interface *audio_ril_interface_open(void)
+{
+	LOGE("%s (%s)", __func__, DEVICE);
+
+	gta04_interface.pdata = gta04_pdata_create();
+
+	return &gta04_interface;
+}
+
+void audio_ril_interface_close(struct audio_ril_interface *interface_p)
+{
+	LOGE("%s (%s)", __func__, DEVICE);
+
+	gta04_pdata_destroy(interface_p->pdata);
+}
+
+}