402 lines
11 KiB
C
402 lines
11 KiB
C
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/*
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* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/fs.h>
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#include <linux/miscdevice.h>
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#include <linux/uaccess.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <linux/msm_audio_aac.h>
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#include <asm/atomic.h>
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#include <asm/ioctls.h>
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#include "audio_utils.h"
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/* Buffer with meta*/
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#define PCM_BUF_SIZE (4096 + sizeof(struct meta_in))
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/* Maximum 5 frames in buffer with meta */
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#define FRAME_SIZE (1 + ((1536+sizeof(struct meta_out_dsp)) * 5))
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#define AAC_FORMAT_ADTS 65535
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/* ------------------- device --------------------- */
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static long aac_in_ioctl(struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct q6audio_in *audio = file->private_data;
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int rc = 0;
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int cnt = 0;
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switch (cmd) {
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case AUDIO_START: {
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struct msm_audio_aac_enc_config *enc_cfg;
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struct msm_audio_aac_config *aac_config;
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uint32_t aac_mode = AAC_ENC_MODE_AAC_LC;
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enc_cfg = audio->enc_cfg;
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aac_config = audio->codec_cfg;
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/* ENCODE CFG (after new set of API's are published )bharath*/
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pr_debug("%s:session id %d: default buf alloc[%d]\n", __func__,
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audio->ac->session, audio->buf_alloc);
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if (audio->enabled == 1) {
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pr_info("%s:AUDIO_START already over\n", __func__);
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rc = 0;
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break;
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}
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rc = audio_in_buf_alloc(audio);
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if (rc < 0) {
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pr_err("%s:session id %d: buffer allocation failed\n",
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__func__, audio->ac->session);
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break;
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}
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pr_debug("%s:sbr_ps_flag = %d, sbr_flag = %d\n", __func__,
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aac_config->sbr_ps_on_flag, aac_config->sbr_on_flag);
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if (aac_config->sbr_ps_on_flag)
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aac_mode = AAC_ENC_MODE_EAAC_P;
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else if (aac_config->sbr_on_flag)
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aac_mode = AAC_ENC_MODE_AAC_P;
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else
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aac_mode = AAC_ENC_MODE_AAC_LC;
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rc = q6asm_enc_cfg_blk_aac(audio->ac,
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audio->buf_cfg.frames_per_buf,
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enc_cfg->sample_rate,
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enc_cfg->channels,
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enc_cfg->bit_rate,
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aac_mode,
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enc_cfg->stream_format);
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if (rc < 0) {
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pr_err("%s:session id %d: cmd media format block"
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"failed\n", __func__, audio->ac->session);
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break;
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}
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if (audio->feedback == NON_TUNNEL_MODE) {
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rc = q6asm_media_format_block_pcm(audio->ac,
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audio->pcm_cfg.sample_rate,
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audio->pcm_cfg.channel_count);
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if (rc < 0) {
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pr_err("%s:session id %d: media format block"
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"failed\n", __func__, audio->ac->session);
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break;
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}
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}
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rc = audio_in_enable(audio);
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if (!rc) {
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audio->enabled = 1;
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} else {
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audio->enabled = 0;
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pr_err("%s:session id %d: Audio Start procedure"
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"failed rc=%d\n", __func__, audio->ac->session, rc);
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break;
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}
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while (cnt++ < audio->str_cfg.buffer_count)
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q6asm_read(audio->ac);
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pr_debug("%s:session id %d: AUDIO_START success enable[%d]\n",
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__func__, audio->ac->session, audio->enabled);
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break;
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}
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case AUDIO_STOP: {
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pr_debug("%s:session id %d: Rxed AUDIO_STOP\n", __func__,
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audio->ac->session);
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rc = audio_in_disable(audio);
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if (rc < 0) {
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pr_err("%s:session id %d: Audio Stop procedure failed"
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"rc=%d\n", __func__, audio->ac->session, rc);
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break;
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}
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break;
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}
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case AUDIO_GET_AAC_ENC_CONFIG: {
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struct msm_audio_aac_enc_config cfg;
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struct msm_audio_aac_enc_config *enc_cfg;
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memset(&cfg, 0, sizeof(cfg));
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enc_cfg = audio->enc_cfg;
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if (enc_cfg->channels == CH_MODE_MONO)
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cfg.channels = 1;
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else
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cfg.channels = 2;
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cfg.sample_rate = enc_cfg->sample_rate;
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cfg.bit_rate = enc_cfg->bit_rate;
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/* ADTS(-1) to ADTS(0x00), RAW(0x00) to RAW(0x03) */
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cfg.stream_format = ((enc_cfg->stream_format == \
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0x00) ? AUDIO_AAC_FORMAT_ADTS : AUDIO_AAC_FORMAT_RAW);
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pr_debug("%s:session id %d: Get-aac-cfg: format=%d sr=%d"
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"bitrate=%d\n", __func__, audio->ac->session,
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cfg.stream_format, cfg.sample_rate, cfg.bit_rate);
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if (copy_to_user((void *)arg, &cfg, sizeof(cfg)))
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rc = -EFAULT;
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break;
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}
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case AUDIO_SET_AAC_ENC_CONFIG: {
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struct msm_audio_aac_enc_config cfg;
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struct msm_audio_aac_enc_config *enc_cfg;
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enc_cfg = audio->enc_cfg;
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if (copy_from_user(&cfg, (void *)arg, sizeof(cfg))) {
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rc = -EFAULT;
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break;
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}
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pr_debug("%s:session id %d: Set-aac-cfg: stream=%d\n", __func__,
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audio->ac->session, cfg.stream_format);
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if ((cfg.stream_format != AUDIO_AAC_FORMAT_RAW) &&
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(cfg.stream_format != AAC_FORMAT_ADTS)) {
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pr_err("%s:session id %d: unsupported AAC format\n",
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__func__, audio->ac->session);
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rc = -EINVAL;
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break;
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}
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if (cfg.channels == 1) {
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cfg.channels = CH_MODE_MONO;
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} else if (cfg.channels == 2) {
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cfg.channels = CH_MODE_STEREO;
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} else {
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rc = -EINVAL;
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break;
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}
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if ((cfg.sample_rate < 8000) && (cfg.sample_rate > 48000)) {
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pr_err("%s: ERROR in setting samplerate = %d\n",
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__func__, cfg.sample_rate);
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rc = -EINVAL;
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break;
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}
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/* For aac-lc, min_bit_rate = min(24Kbps, 0.5*SR*num_chan);
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max_bi_rate = min(192Kbps, 6*SR*num_chan);
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min_sample_rate = 8000Hz, max_rate=48000 */
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if ((cfg.bit_rate < 4000) || (cfg.bit_rate > 192000)) {
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pr_err("%s: ERROR in setting bitrate = %d\n",
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__func__, cfg.bit_rate);
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rc = -EINVAL;
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break;
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}
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enc_cfg->sample_rate = cfg.sample_rate;
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enc_cfg->channels = cfg.channels;
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enc_cfg->bit_rate = cfg.bit_rate;
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enc_cfg->stream_format =
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((cfg.stream_format == AUDIO_AAC_FORMAT_RAW) ? \
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0x03 : 0x00);
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pr_debug("%s:session id %d: Set-aac-cfg:SR= 0x%x ch=0x%x"
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"bitrate=0x%x, format(adts/raw) = %d\n",
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__func__, audio->ac->session, enc_cfg->sample_rate,
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enc_cfg->channels, enc_cfg->bit_rate,
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enc_cfg->stream_format);
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break;
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}
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case AUDIO_GET_AAC_CONFIG: {
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if (copy_to_user((void *)arg, &audio->codec_cfg,
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sizeof(struct msm_audio_aac_config))) {
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rc = -EFAULT;
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break;
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}
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break;
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}
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case AUDIO_SET_AAC_CONFIG: {
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struct msm_audio_aac_config aac_cfg;
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struct msm_audio_aac_config *audio_aac_cfg;
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struct msm_audio_aac_enc_config *enc_cfg;
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enc_cfg = audio->enc_cfg;
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audio_aac_cfg = audio->codec_cfg;
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if (copy_from_user(&aac_cfg, (void *)arg,
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sizeof(struct msm_audio_aac_config))) {
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rc = -EFAULT;
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break;
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}
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pr_debug("%s:session id %d: AUDIO_SET_AAC_CONFIG: sbr_flag = %d"
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" sbr_ps_flag = %d\n", __func__,
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audio->ac->session, aac_cfg.sbr_on_flag,
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aac_cfg.sbr_ps_on_flag);
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audio_aac_cfg->sbr_on_flag = aac_cfg.sbr_on_flag;
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audio_aac_cfg->sbr_ps_on_flag = aac_cfg.sbr_ps_on_flag;
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if ((audio_aac_cfg->sbr_on_flag == 1) ||
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(audio_aac_cfg->sbr_ps_on_flag == 1)) {
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if (enc_cfg->sample_rate < 24000) {
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pr_err("%s: ERROR in setting samplerate = %d"
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"\n", __func__, enc_cfg->sample_rate);
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rc = -EINVAL;
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break;
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}
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}
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break;
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}
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default:
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rc = -EINVAL;
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}
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return rc;
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}
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static int aac_in_open(struct inode *inode, struct file *file)
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{
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struct q6audio_in *audio = NULL;
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struct msm_audio_aac_enc_config *enc_cfg;
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struct msm_audio_aac_config *aac_config;
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int rc = 0;
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audio = kzalloc(sizeof(struct q6audio_in), GFP_KERNEL);
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if (audio == NULL) {
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pr_err("%s: Could not allocate memory for aac"
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"driver\n", __func__);
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return -ENOMEM;
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}
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/* Allocate memory for encoder config param */
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audio->enc_cfg = kzalloc(sizeof(struct msm_audio_aac_enc_config),
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GFP_KERNEL);
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if (audio->enc_cfg == NULL) {
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pr_err("%s:session id %d: Could not allocate memory for aac"
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"config param\n", __func__, audio->ac->session);
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kfree(audio);
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return -ENOMEM;
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}
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enc_cfg = audio->enc_cfg;
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audio->codec_cfg = kzalloc(sizeof(struct msm_audio_aac_config),
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GFP_KERNEL);
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if (audio->codec_cfg == NULL) {
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pr_err("%s:session id %d: Could not allocate memory for aac"
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"config\n", __func__, audio->ac->session);
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kfree(audio->enc_cfg);
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kfree(audio);
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return -ENOMEM;
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}
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aac_config = audio->codec_cfg;
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mutex_init(&audio->lock);
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mutex_init(&audio->read_lock);
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mutex_init(&audio->write_lock);
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spin_lock_init(&audio->dsp_lock);
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init_waitqueue_head(&audio->read_wait);
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init_waitqueue_head(&audio->write_wait);
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/* Settings will be re-config at AUDIO_SET_CONFIG,
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* but at least we need to have initial config
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*/
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audio->str_cfg.buffer_size = FRAME_SIZE;
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audio->str_cfg.buffer_count = FRAME_NUM;
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audio->min_frame_size = 1536;
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audio->max_frames_per_buf = 5;
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enc_cfg->sample_rate = 8000;
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enc_cfg->channels = 1;
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enc_cfg->bit_rate = 16000;
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enc_cfg->stream_format = 0x00;/* 0:ADTS, 3:RAW */
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audio->buf_cfg.meta_info_enable = 0x01;
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audio->buf_cfg.frames_per_buf = 0x01;
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audio->pcm_cfg.buffer_count = PCM_BUF_COUNT;
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audio->pcm_cfg.buffer_size = PCM_BUF_SIZE;
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aac_config->format = AUDIO_AAC_FORMAT_ADTS;
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aac_config->audio_object = AUDIO_AAC_OBJECT_LC;
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aac_config->sbr_on_flag = 0;
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aac_config->sbr_ps_on_flag = 0;
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aac_config->channel_configuration = 1;
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audio->ac = q6asm_audio_client_alloc((app_cb)q6asm_in_cb,
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(void *)audio);
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if (!audio->ac) {
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pr_err("%s: Could not allocate memory for"
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"audio client\n", __func__);
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kfree(audio->enc_cfg);
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kfree(audio->codec_cfg);
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kfree(audio);
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return -ENOMEM;
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}
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/* open aac encoder in tunnel mode */
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audio->buf_cfg.frames_per_buf = 0x01;
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if ((file->f_mode & FMODE_WRITE) &&
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(file->f_mode & FMODE_READ)) {
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audio->feedback = NON_TUNNEL_MODE;
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rc = q6asm_open_read_write(audio->ac, FORMAT_MPEG4_AAC,
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FORMAT_LINEAR_PCM);
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if (rc < 0) {
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pr_err("%s:session id %d: NT Open failed rc=%d\n",
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__func__, audio->ac->session, rc);
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rc = -ENODEV;
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goto fail;
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}
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audio->buf_cfg.meta_info_enable = 0x01;
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pr_info("%s:session id %d: NT mode encoder success\n", __func__,
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audio->ac->session);
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} else if (!(file->f_mode & FMODE_WRITE) &&
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(file->f_mode & FMODE_READ)) {
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audio->feedback = TUNNEL_MODE;
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|
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rc = q6asm_open_read(audio->ac, FORMAT_MPEG4_AAC);
|
||
|
|
|
||
|
|
if (rc < 0) {
|
||
|
|
pr_err("%s:session id %d: Tunnel Open failed rc=%d\n",
|
||
|
|
__func__, audio->ac->session, rc);
|
||
|
|
rc = -ENODEV;
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
/* register for tx overflow (valid for tunnel mode only) */
|
||
|
|
rc = q6asm_reg_tx_overflow(audio->ac, 0x01);
|
||
|
|
if (rc < 0) {
|
||
|
|
pr_err("%s:session id %d: TX Overflow registration"
|
||
|
|
"failed rc=%d\n", __func__,
|
||
|
|
audio->ac->session, rc);
|
||
|
|
rc = -ENODEV;
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
audio->buf_cfg.meta_info_enable = 0x00;
|
||
|
|
pr_info("%s:session id %d: T mode encoder success\n", __func__,
|
||
|
|
audio->ac->session);
|
||
|
|
} else {
|
||
|
|
pr_err("%s:session id %d: Unexpected mode\n", __func__,
|
||
|
|
audio->ac->session);
|
||
|
|
rc = -EACCES;
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
audio->opened = 1;
|
||
|
|
atomic_set(&audio->in_count, PCM_BUF_COUNT);
|
||
|
|
atomic_set(&audio->out_count, 0x00);
|
||
|
|
audio->enc_ioctl = aac_in_ioctl;
|
||
|
|
file->private_data = audio;
|
||
|
|
|
||
|
|
pr_info("%s:session id %d: success\n", __func__, audio->ac->session);
|
||
|
|
return 0;
|
||
|
|
fail:
|
||
|
|
q6asm_audio_client_free(audio->ac);
|
||
|
|
kfree(audio->enc_cfg);
|
||
|
|
kfree(audio->codec_cfg);
|
||
|
|
kfree(audio);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations audio_in_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = aac_in_open,
|
||
|
|
.release = audio_in_release,
|
||
|
|
.read = audio_in_read,
|
||
|
|
.write = audio_in_write,
|
||
|
|
.unlocked_ioctl = audio_in_ioctl,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct miscdevice audio_aac_in_misc = {
|
||
|
|
.minor = MISC_DYNAMIC_MINOR,
|
||
|
|
.name = "msm_aac_in",
|
||
|
|
.fops = &audio_in_fops,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init aac_in_init(void)
|
||
|
|
{
|
||
|
|
return misc_register(&audio_aac_in_misc);
|
||
|
|
}
|
||
|
|
device_initcall(aac_in_init);
|