Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/arch/arm/mach-msm/qdsp6/audiov2/aac_in.c b/arch/arm/mach-msm/qdsp6/audiov2/aac_in.c
new file mode 100644
index 0000000..fe6c049
--- /dev/null
+++ b/arch/arm/mach-msm/qdsp6/audiov2/aac_in.c
@@ -0,0 +1,266 @@
+/*
+ * Copyright (C) 2009 Google, Inc.
+ * Copyright (C) 2009 HTC Corporation
+ * Copyright (c) 2009, Code Aurora Forum. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/miscdevice.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/uaccess.h>
+
+#include <linux/msm_audio_aac.h>
+
+#include <mach/msm_qdsp6_audiov2.h>
+#include "dal_audio.h"
+#include "dal_audio_format.h"
+
+struct aac {
+ struct mutex lock;
+ struct msm_audio_aac_enc_config cfg;
+ struct msm_audio_stream_config str_cfg;
+ struct audio_client *audio_client;
+};
+
+static long q6_aac_in_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct aac *aac = file->private_data;
+ struct adsp_open_command rpc;
+
+ int sample_rate;
+ int audio_object_type;
+ int index = sizeof(u32);
+ int rc = 0;
+ u32 *aac_type = NULL;
+
+
+ mutex_lock(&aac->lock);
+ switch (cmd) {
+
+ case AUDIO_START:
+ if (aac->audio_client) {
+ rc = -EBUSY;
+ break;
+ } else {
+ tx_clk_freq = 48000;
+ aac->audio_client = q6audio_open(AUDIO_FLAG_READ,
+ aac->str_cfg.buffer_size);
+
+ if (aac->audio_client < 0) {
+
+ tx_clk_freq = 8000;
+ rc = -ENOMEM;
+ break;
+ }
+ }
+ memset(&rpc, 0, sizeof(rpc));
+
+ rpc.format_block.binary.format = ADSP_AUDIO_FORMAT_MPEG4_AAC;
+ /* only 48k sample rate is supported */
+ sample_rate = 3;
+
+ /* AAC OBJECT LC */
+ audio_object_type = 2;
+
+ aac_type = (u32 *)rpc.format_block.binary.data;
+ switch (aac->cfg.stream_format) {
+
+ case AUDIO_AAC_FORMAT_ADTS:
+ /* AAC Encoder expect MPEG4_ADTS media type */
+ *aac_type = ADSP_AUDIO_AAC_MPEG4_ADTS;
+ break;
+ case AUDIO_AAC_FORMAT_RAW:
+ /* for ADIF recording */
+ *aac_type = ADSP_AUDIO_AAC_RAW;
+ break;
+ }
+
+ rpc.format_block.binary.data[index++] = (u8)(
+ ((audio_object_type & 0x1F) << 3) |
+ ((sample_rate >> 1) & 0x7));
+ rpc.format_block.binary.data[index] = (u8)(
+ ((sample_rate & 0x1) << 7) |
+ ((aac->cfg.channels & 0x7) << 3));
+
+ rpc.format_block.binary.num_bytes = index + 1;
+ rpc.hdr.opcode = ADSP_AUDIO_IOCTL_CMD_OPEN_READ;
+ rpc.device = ADSP_AUDIO_DEVICE_ID_DEFAULT;
+ rpc.stream_context = ADSP_AUDIO_DEVICE_CONTEXT_RECORD;
+ rpc.buf_max_size = aac->str_cfg.buffer_size;
+ rpc.config.aac.bit_rate = aac->cfg.bit_rate;
+ rpc.config.aac.encoder_mode = ADSP_AUDIO_ENC_AAC_LC_ONLY_MODE;
+ q6audio_start(aac->audio_client, &rpc, sizeof(rpc));
+ break;
+ case AUDIO_STOP:
+ break;
+ case AUDIO_FLUSH:
+ break;
+ case AUDIO_SET_VOLUME:
+ break;
+ case AUDIO_GET_STREAM_CONFIG:
+ if (copy_to_user((void *)arg, &aac->str_cfg,
+ sizeof(struct msm_audio_stream_config)))
+ rc = -EFAULT;
+ break;
+ case AUDIO_SET_STREAM_CONFIG:
+ if (copy_from_user(&aac->str_cfg, (void *)arg,
+ sizeof(struct msm_audio_stream_config))) {
+ rc = -EFAULT;
+ break;
+ }
+ if (aac->str_cfg.buffer_size < 519) {
+ pr_err("Buffer size too small\n");
+ rc = -EINVAL;
+ break;
+ }
+ if (aac->str_cfg.buffer_count != 2)
+ pr_info("Buffer count set to 2\n");
+
+ break;
+ case AUDIO_SET_AAC_ENC_CONFIG:
+ if (copy_from_user(&aac->cfg, (void *) arg,
+ sizeof(struct msm_audio_aac_enc_config))) {
+ rc = -EFAULT;
+ }
+ if (aac->cfg.channels != 1) {
+ pr_err("only mono is supported\n");
+ rc = -EINVAL;
+ }
+ if (aac->cfg.sample_rate != 48000) {
+ pr_err("only 48KHz is supported\n");
+ rc = -EINVAL;
+ }
+ if (aac->cfg.stream_format != AUDIO_AAC_FORMAT_RAW &&
+ aac->cfg.stream_format != AUDIO_AAC_FORMAT_ADTS) {
+ pr_err("unsupported AAC format\n");
+ rc = -EINVAL;
+ }
+ break;
+ case AUDIO_GET_AAC_ENC_CONFIG:
+ if (copy_to_user((void *) arg, &aac->cfg,
+ sizeof(struct msm_audio_aac_enc_config))) {
+ rc = -EFAULT;
+ }
+ break;
+ default:
+ rc = -EINVAL;
+ }
+
+ mutex_unlock(&aac->lock);
+ return rc;
+}
+
+static int q6_aac_in_open(struct inode *inode, struct file *file)
+{
+
+ struct aac *aac;
+ aac = kmalloc(sizeof(struct aac), GFP_KERNEL);
+ if (aac == NULL) {
+ pr_err("Could not allocate memory for aac driver\n");
+ return -ENOMEM;
+ }
+
+ mutex_init(&aac->lock);
+ file->private_data = aac;
+ aac->audio_client = NULL;
+ aac->str_cfg.buffer_size = 519;
+ aac->str_cfg.buffer_count = 2;
+ aac->cfg.channels = 1;
+ aac->cfg.bit_rate = 192000;
+ aac->cfg.stream_format = AUDIO_AAC_FORMAT_ADTS;
+ aac->cfg.sample_rate = 48000;
+
+ return 0;
+}
+
+static ssize_t q6_aac_in_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct audio_client *ac;
+ struct audio_buffer *ab;
+ const char __user *start = buf;
+ struct aac *aac = file->private_data;
+ int xfer = 0;
+ int res;
+
+ mutex_lock(&aac->lock);
+ ac = aac->audio_client;
+ if (!ac) {
+ res = -ENODEV;
+ goto fail;
+ }
+ while (count > xfer) {
+ ab = ac->buf + ac->cpu_buf;
+
+ if (ab->used)
+ wait_event(ac->wait, (ab->used == 0));
+
+ xfer = ab->actual_size;
+
+ if (copy_to_user(buf, ab->data, xfer)) {
+ res = -EFAULT;
+ goto fail;
+ }
+
+ buf += xfer;
+ count -= xfer;
+
+ ab->used = 1;
+ q6audio_read(ac, ab);
+ ac->cpu_buf ^= 1;
+ }
+ res = buf - start;
+fail:
+ mutex_unlock(&aac->lock);
+
+ return res;
+}
+
+static int q6_aac_in_release(struct inode *inode, struct file *file)
+{
+ int rc = 0;
+ struct aac *aac = file->private_data;
+
+ mutex_lock(&aac->lock);
+ if (aac->audio_client)
+ rc = q6audio_close(aac->audio_client);
+ mutex_unlock(&aac->lock);
+ kfree(aac);
+ tx_clk_freq = 8000;
+ return rc;
+}
+
+static const struct file_operations q6_aac_in_fops = {
+ .owner = THIS_MODULE,
+ .open = q6_aac_in_open,
+ .read = q6_aac_in_read,
+ .release = q6_aac_in_release,
+ .unlocked_ioctl = q6_aac_in_ioctl,
+};
+
+struct miscdevice q6_aac_in_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "msm_aac_in",
+ .fops = &q6_aac_in_fops,
+};
+
+static int __init q6_aac_in_init(void)
+{
+ return misc_register(&q6_aac_in_misc);
+}
+
+device_initcall(q6_aac_in_init);