| /* aac audio output device |
| * |
| * Copyright (C) 2008 Google, Inc. |
| * Copyright (C) 2008 HTC Corporation |
| * Copyright (c) 2010-2014, The Linux Foundation. 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/msm_audio_aac.h> |
| #include "audio_utils_aio.h" |
| |
| #define AUDIO_AAC_DUAL_MONO_INVALID -1 |
| #define PCM_BUFSZ_MIN_AAC ((8*1024) + sizeof(struct dec_meta_out)) |
| |
| #ifdef CONFIG_DEBUG_FS |
| static const struct file_operations audio_aac_debug_fops = { |
| .read = audio_aio_debug_read, |
| .open = audio_aio_debug_open, |
| }; |
| #endif |
| |
| static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| struct q6audio_aio *audio = file->private_data; |
| int rc = 0; |
| switch (cmd) { |
| case AUDIO_START: { |
| struct asm_aac_cfg aac_cfg; |
| struct msm_audio_aac_config *aac_config; |
| uint32_t sbr_ps = 0x00; |
| pr_debug("%s: AUDIO_START session_id[%d]\n", __func__, |
| audio->ac->session); |
| if (audio->feedback == NON_TUNNEL_MODE) { |
| /* Configure PCM output block */ |
| rc = q6asm_enc_cfg_blk_pcm(audio->ac, 0, 0); |
| if (rc < 0) { |
| pr_err("pcm output block config failed\n"); |
| break; |
| } |
| } |
| /* turn on both sbr and ps */ |
| rc = q6asm_enable_sbrps(audio->ac, sbr_ps); |
| if (rc < 0) |
| pr_err("sbr-ps enable failed\n"); |
| aac_config = (struct msm_audio_aac_config *)audio->codec_cfg; |
| if (aac_config->sbr_ps_on_flag) |
| aac_cfg.aot = AAC_ENC_MODE_EAAC_P; |
| else if (aac_config->sbr_on_flag) |
| aac_cfg.aot = AAC_ENC_MODE_AAC_P; |
| else |
| aac_cfg.aot = AAC_ENC_MODE_AAC_LC; |
| |
| switch (aac_config->format) { |
| case AUDIO_AAC_FORMAT_ADTS: |
| aac_cfg.format = 0x00; |
| break; |
| case AUDIO_AAC_FORMAT_LOAS: |
| aac_cfg.format = 0x01; |
| break; |
| case AUDIO_AAC_FORMAT_ADIF: |
| aac_cfg.format = 0x02; |
| break; |
| default: |
| case AUDIO_AAC_FORMAT_RAW: |
| aac_cfg.format = 0x03; |
| } |
| aac_cfg.ep_config = aac_config->ep_config; |
| aac_cfg.section_data_resilience = |
| aac_config->aac_section_data_resilience_flag; |
| aac_cfg.scalefactor_data_resilience = |
| aac_config->aac_scalefactor_data_resilience_flag; |
| aac_cfg.spectral_data_resilience = |
| aac_config->aac_spectral_data_resilience_flag; |
| aac_cfg.ch_cfg = audio->pcm_cfg.channel_count; |
| if (audio->feedback == TUNNEL_MODE) { |
| aac_cfg.sample_rate = aac_config->sample_rate; |
| aac_cfg.ch_cfg = aac_config->channel_configuration; |
| } else { |
| aac_cfg.sample_rate = audio->pcm_cfg.sample_rate; |
| aac_cfg.ch_cfg = audio->pcm_cfg.channel_count; |
| } |
| |
| pr_debug("%s:format=%x aot=%d ch=%d sr=%d\n", |
| __func__, aac_cfg.format, |
| aac_cfg.aot, aac_cfg.ch_cfg, |
| aac_cfg.sample_rate); |
| |
| /* Configure Media format block */ |
| rc = q6asm_media_format_block_aac(audio->ac, &aac_cfg); |
| if (rc < 0) { |
| pr_err("cmd media format block failed\n"); |
| break; |
| } |
| rc = audio_aio_enable(audio); |
| audio->eos_rsp = 0; |
| audio->eos_flag = 0; |
| if (!rc) { |
| rc = enable_volume_ramp(audio); |
| if (rc < 0) { |
| pr_err("%s: Failed to enable volume ramp\n", |
| __func__); |
| } |
| audio->enabled = 1; |
| } else { |
| audio->enabled = 0; |
| pr_err("Audio Start procedure failed rc=%d\n", rc); |
| break; |
| } |
| pr_info("%s: AUDIO_START sessionid[%d]enable[%d]\n", __func__, |
| audio->ac->session, |
| audio->enabled); |
| if (audio->stopped == 1) |
| audio->stopped = 0; |
| break; |
| } |
| case AUDIO_GET_AAC_CONFIG: { |
| if (copy_to_user((void *)arg, audio->codec_cfg, |
| sizeof(struct msm_audio_aac_config))) { |
| rc = -EFAULT; |
| break; |
| } |
| break; |
| } |
| case AUDIO_SET_AAC_CONFIG: { |
| struct msm_audio_aac_config *aac_config; |
| pr_debug("%s: AUDIO_SET_AAC_CONFIG\n", __func__); |
| if (copy_from_user(audio->codec_cfg, (void *)arg, |
| sizeof(struct msm_audio_aac_config))) { |
| rc = -EFAULT; |
| break; |
| } else { |
| uint16_t sce_left = 1, sce_right = 2; |
| aac_config = audio->codec_cfg; |
| /* PL_PR is 0 only need to check PL_SR */ |
| if (aac_config->dual_mono_mode > |
| AUDIO_AAC_DUAL_MONO_PL_SR) { |
| pr_err("%s:AUDIO_SET_AAC_CONFIG: Invalid" |
| "dual_mono mode =%d\n", __func__, |
| aac_config->dual_mono_mode); |
| } else { |
| /* convert the data from user into sce_left |
| * and sce_right based on the definitions |
| */ |
| pr_debug("%s: AUDIO_SET_AAC_CONFIG: modify" |
| "dual_mono mode =%d\n", __func__, |
| aac_config->dual_mono_mode); |
| switch (aac_config->dual_mono_mode) { |
| case AUDIO_AAC_DUAL_MONO_PL_PR: |
| sce_left = 1; |
| sce_right = 1; |
| break; |
| case AUDIO_AAC_DUAL_MONO_SL_SR: |
| sce_left = 2; |
| sce_right = 2; |
| break; |
| case AUDIO_AAC_DUAL_MONO_SL_PR: |
| sce_left = 2; |
| sce_right = 1; |
| break; |
| case AUDIO_AAC_DUAL_MONO_PL_SR: |
| default: |
| sce_left = 1; |
| sce_right = 2; |
| break; |
| } |
| rc = q6asm_cfg_dual_mono_aac(audio->ac, |
| sce_left, sce_right); |
| if (rc < 0) |
| pr_err("%s: asm cmd dualmono failed" |
| " rc=%d\n", __func__, rc); |
| } |
| } |
| break; |
| } |
| default: |
| pr_debug("%s[%p]: Calling utils ioctl\n", __func__, audio); |
| rc = audio->codec_ioctl(file, cmd, arg); |
| if (rc) |
| pr_err("%s[%p]:Failed in utils_ioctl: %d\n", |
| __func__, audio, rc); |
| } |
| return rc; |
| } |
| |
| static int audio_open(struct inode *inode, struct file *file) |
| { |
| struct q6audio_aio *audio = NULL; |
| int rc = 0; |
| struct msm_audio_aac_config *aac_config = NULL; |
| |
| #ifdef CONFIG_DEBUG_FS |
| /* 4 bytes represents decoder number, 1 byte for terminate string */ |
| char name[sizeof "msm_aac_" + 5]; |
| #endif |
| audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL); |
| |
| if (audio == NULL) { |
| pr_err("Could not allocate memory for aac decode driver\n"); |
| return -ENOMEM; |
| } |
| audio->codec_cfg = kzalloc(sizeof(struct msm_audio_aac_config), |
| GFP_KERNEL); |
| if (audio->codec_cfg == NULL) { |
| pr_err("%s:Could not allocate memory for aac" |
| "config\n", __func__); |
| kfree(audio); |
| return -ENOMEM; |
| } |
| aac_config = audio->codec_cfg; |
| |
| /* Settings will be re-config at AUDIO_SET_CONFIG, |
| * but at least we need to have initial config |
| */ |
| audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN_AAC; |
| aac_config->dual_mono_mode = AUDIO_AAC_DUAL_MONO_INVALID; |
| |
| audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb, |
| (void *)audio); |
| |
| if (!audio->ac) { |
| pr_err("Could not allocate memory for audio client\n"); |
| kfree(audio->codec_cfg); |
| kfree(audio); |
| return -ENOMEM; |
| } |
| rc = audio_aio_open(audio, file); |
| if (rc < 0) { |
| pr_err("%s: audio_aio_open rc=%d\n", |
| __func__, rc); |
| goto fail; |
| } |
| /* open in T/NT mode */ |
| if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) { |
| rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM, |
| FORMAT_MPEG4_AAC); |
| if (rc < 0) { |
| pr_err("NT mode Open failed rc=%d\n", rc); |
| rc = -ENODEV; |
| goto fail; |
| } |
| audio->feedback = NON_TUNNEL_MODE; |
| /* open AAC decoder, expected frames is always 1 |
| audio->buf_cfg.frames_per_buf = 0x01;*/ |
| audio->buf_cfg.meta_info_enable = 0x01; |
| } else if ((file->f_mode & FMODE_WRITE) && |
| !(file->f_mode & FMODE_READ)) { |
| rc = q6asm_open_write(audio->ac, FORMAT_MPEG4_AAC); |
| if (rc < 0) { |
| pr_err("T mode Open failed rc=%d\n", rc); |
| rc = -ENODEV; |
| goto fail; |
| } |
| audio->feedback = TUNNEL_MODE; |
| audio->buf_cfg.meta_info_enable = 0x00; |
| } else { |
| pr_err("Not supported mode\n"); |
| rc = -EACCES; |
| goto fail; |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| snprintf(name, sizeof name, "msm_aac_%04x", audio->ac->session); |
| audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, |
| NULL, (void *)audio, |
| &audio_aac_debug_fops); |
| |
| if (IS_ERR(audio->dentry)) |
| pr_debug("debugfs_create_file failed\n"); |
| #endif |
| pr_info("%s:aacdec success mode[%d]session[%d]\n", __func__, |
| audio->feedback, |
| audio->ac->session); |
| return rc; |
| fail: |
| q6asm_audio_client_free(audio->ac); |
| kfree(audio->codec_cfg); |
| kfree(audio); |
| return rc; |
| } |
| |
| static const struct file_operations audio_aac_fops = { |
| .owner = THIS_MODULE, |
| .open = audio_open, |
| .release = audio_aio_release, |
| .unlocked_ioctl = audio_ioctl, |
| .fsync = audio_aio_fsync, |
| }; |
| |
| struct miscdevice audio_aac_misc = { |
| .minor = MISC_DYNAMIC_MINOR, |
| .name = "msm_aac", |
| .fops = &audio_aac_fops, |
| }; |
| |
| static int __init audio_aac_init(void) |
| { |
| return misc_register(&audio_aac_misc); |
| } |
| |
| device_initcall(audio_aac_init); |