post_proc: Add support for non-tunnel DSP audio effects
Add hw accelerator module to send PCM data to DSP and get
back the effects processed data.
Expose a wrapper library for AudioFlinger to be able use the new
module to apply the DSP audio effects.
Change-Id: I6ee30c11f04a97b35f12201fb61b8cd901921e68
Signed-off-by: Alexy Joseph <alexyj@codeaurora.org>
diff --git a/post_proc/hw_accelerator.c b/post_proc/hw_accelerator.c
new file mode 100644
index 0000000..b49337a
--- /dev/null
+++ b/post_proc/hw_accelerator.c
@@ -0,0 +1,321 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define LOG_TAG "hw_accelerator_effect"
+/*#define LOG_NDEBUG 0*/
+
+#include <cutils/list.h>
+#include <cutils/log.h>
+#include <fcntl.h>
+#include <tinyalsa/asoundlib.h>
+#include <sound/audio_effects.h>
+#include <audio_effects/effect_hwaccelerator.h>
+
+#include "effect_api.h"
+#include "hw_accelerator.h"
+
+
+/* hw_accelerator UUID: 7d1580bd-297f-4683-9239-e475b6d1d69f */
+const effect_descriptor_t hw_accelerator_descriptor = {
+ EFFECT_UIID_HWACCELERATOR__,
+ {0x7d1580bd, 0x297f, 0x4683, 0x9239, {0xe4, 0x75, 0xb6, 0xd1, 0xd6, 0x9f}}, // uuid
+ EFFECT_CONTROL_API_VERSION,
+ (EFFECT_FLAG_TYPE_INSERT | EFFECT_FLAG_DEVICE_IND),
+ 0, /* TODO */
+ 1,
+ "HwAccelerated Library",
+ "QTI",
+};
+
+int hw_accelerator_get_parameter(effect_context_t *context,
+ effect_param_t *p, uint32_t *size)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+ int voffset = ((p->psize - 1) / sizeof(int32_t) + 1) * sizeof(int32_t);
+ int32_t *param_tmp = (int32_t *)p->data;
+ int32_t param = *param_tmp++;
+ void *value = p->data + voffset;
+ int i;
+
+ ALOGV("%s: ctxt %p, param %d", __func__, hw_acc_ctxt, param);
+
+ p->status = 0;
+
+ switch (param) {
+ case HW_ACCELERATOR_FD:
+ if (p->vsize < sizeof(int32_t))
+ p->status = -EINVAL;
+ p->vsize = sizeof(int32_t);
+ break;
+ default:
+ p->status = -EINVAL;
+ }
+
+ *size = sizeof(effect_param_t) + voffset + p->vsize;
+
+ if (p->status != 0)
+ return 0;
+
+ switch (param) {
+ case HW_ACCELERATOR_FD:
+ ALOGV("%s: HW_ACCELERATOR_FD", __func__);
+ *(int32_t *)value = hw_acc_ctxt->fd;
+ break;
+
+ default:
+ p->status = -EINVAL;
+ break;
+ }
+
+ return 0;
+}
+
+int hw_accelerator_set_parameter(effect_context_t *context, effect_param_t *p,
+ uint32_t size)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+ int voffset = ((p->psize - 1) / sizeof(int32_t) + 1) * sizeof(int32_t);
+ void *value = p->data + voffset;
+ int32_t *param_tmp = (int32_t *)p->data;
+ int32_t param = *param_tmp++;
+
+ ALOGV("%s: ctxt %p, param %d", __func__, hw_acc_ctxt, param);
+
+ p->status = 0;
+
+ switch (param) {
+ /* Placeholder for effects to use set param */
+ default:
+ p->status = -EINVAL;
+ break;
+ }
+
+ return 0;
+}
+
+int hw_accelerator_set_device(effect_context_t *context, uint32_t device)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ hw_acc_ctxt->device = device;
+ return 0;
+}
+
+int hw_accelerator_init(effect_context_t *context)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ context->config.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ;
+ context->config.inputCfg.channels = AUDIO_CHANNEL_OUT_7POINT1;
+ context->config.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
+ context->config.inputCfg.samplingRate = 44100;
+ context->config.inputCfg.bufferProvider.getBuffer = NULL;
+ context->config.inputCfg.bufferProvider.releaseBuffer = NULL;
+ context->config.inputCfg.bufferProvider.cookie = NULL;
+ context->config.inputCfg.mask = EFFECT_CONFIG_ALL;
+
+ context->config.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE;
+ context->config.outputCfg.channels = AUDIO_CHANNEL_OUT_STEREO;
+ context->config.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
+ context->config.outputCfg.samplingRate = 44100;
+ context->config.outputCfg.bufferProvider.getBuffer = NULL;
+ context->config.outputCfg.bufferProvider.releaseBuffer = NULL;
+ context->config.outputCfg.bufferProvider.cookie = NULL;
+ context->config.outputCfg.mask = EFFECT_CONFIG_ALL;
+
+ set_config(context, &context->config);
+
+ hw_acc_ctxt->fd = -1;
+ memset(&(hw_acc_ctxt->cfg), 0, sizeof(struct msm_hwacc_effects_config));
+
+ return 0;
+}
+
+int hw_accelerator_reset(effect_context_t *context)
+{
+ ALOGV("%s", __func__);
+ return 0;
+}
+
+int hw_accelerator_set_mode(effect_context_t *context, int32_t frame_count)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ hw_acc_ctxt->cfg.output.sample_rate = context->config.inputCfg.samplingRate;
+ hw_acc_ctxt->cfg.input.sample_rate = context->config.outputCfg.samplingRate;
+
+ hw_acc_ctxt->cfg.output.num_channels = popcount(context->config.inputCfg.channels);
+ hw_acc_ctxt->cfg.input.num_channels = popcount(context->config.outputCfg.channels);
+
+ hw_acc_ctxt->cfg.output.bits_per_sample = 8 *
+ audio_bytes_per_sample(context->config.inputCfg.format);
+ hw_acc_ctxt->cfg.input.bits_per_sample = 8 *
+ audio_bytes_per_sample(context->config.outputCfg.format);
+
+ ALOGV("write: sample_rate: %d, channel: %d, bit_width: %d",
+ hw_acc_ctxt->cfg.output.sample_rate, hw_acc_ctxt->cfg.output.num_channels,
+ hw_acc_ctxt->cfg.output.bits_per_sample);
+ ALOGV("read: sample_rate: %d, channel: %d, bit_width: %d",
+ hw_acc_ctxt->cfg.input.sample_rate, hw_acc_ctxt->cfg.input.num_channels,
+ hw_acc_ctxt->cfg.input.bits_per_sample);
+
+ hw_acc_ctxt->cfg.output.num_buf = 4;
+ hw_acc_ctxt->cfg.input.num_buf = 2;
+
+ hw_acc_ctxt->cfg.output.buf_size = frame_count *
+ hw_acc_ctxt->cfg.output.num_channels *
+ audio_bytes_per_sample(context->config.inputCfg.format) *
+ ((hw_acc_ctxt->cfg.output.sample_rate/hw_acc_ctxt->cfg.input.sample_rate) +
+ (hw_acc_ctxt->cfg.output.sample_rate%hw_acc_ctxt->cfg.input.sample_rate ? 1 : 0));
+ hw_acc_ctxt->cfg.input.buf_size = frame_count *
+ hw_acc_ctxt->cfg.input.num_channels *
+ audio_bytes_per_sample(context->config.outputCfg.format);
+
+ hw_acc_ctxt->cfg.meta_mode_enabled = 0;
+ /* TODO: overwrite this for effects using custom topology*/
+ hw_acc_ctxt->cfg.overwrite_topology = 0;
+ hw_acc_ctxt->cfg.topology = 0;
+
+ return 0;
+}
+
+int hw_accelerator_enable(effect_context_t *context)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ hw_acc_ctxt->fd = open("/dev/msm_hweffects", O_RDWR | O_NONBLOCK);
+ /* open driver */
+ if (hw_acc_ctxt->fd < 0) {
+ ALOGE("Audio Effects driver open failed");
+ return -EFAULT;
+ }
+ /* set config */
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_SET_EFFECTS_CONFIG, &hw_acc_ctxt->cfg) < 0) {
+ ALOGE("setting audio effects drivers config failed");
+ if (close(hw_acc_ctxt->fd) < 0)
+ ALOGE("releasing hardware accelerated effects driver failed");
+ hw_acc_ctxt->fd = -1;
+ return -EFAULT;
+ }
+ /* start */
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_START, 0) < 0) {
+ ALOGE("audio effects drivers prepare failed");
+ if (close(hw_acc_ctxt->fd) < 0)
+ ALOGE("releasing hardware accelerated effects driver failed");
+ hw_acc_ctxt->fd = -1;
+ return -EFAULT;
+ }
+ return 0;
+}
+
+int hw_accelerator_disable(effect_context_t *context)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ if (hw_acc_ctxt->fd > 0)
+ if (close(hw_acc_ctxt->fd) < 0)
+ ALOGE("releasing hardware accelerated effects driver failed");
+ hw_acc_ctxt->fd = -1;
+ return 0;
+}
+
+int hw_accelerator_release(effect_context_t *context)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ if (hw_acc_ctxt->fd > 0)
+ if (close(hw_acc_ctxt->fd) < 0)
+ ALOGE("releasing hardware accelerated effects driver failed");
+ hw_acc_ctxt->fd = -1;
+ return 0;
+}
+
+int hw_accelerator_process(effect_context_t *context, audio_buffer_t *in_buf,
+ audio_buffer_t *out_buf)
+{
+ hw_accelerator_context_t *hw_acc_ctxt = (hw_accelerator_context_t *)context;
+ struct msm_hwacc_buf_cfg buf_cfg;
+ struct msm_hwacc_buf_avail buf_avail;
+ int ret = 0;
+
+ ALOGV("%s: ctxt %p", __func__, hw_acc_ctxt);
+ if (in_buf == NULL || in_buf->raw == NULL ||
+ out_buf == NULL || out_buf->raw == NULL)
+ return -EINVAL;
+
+ buf_cfg.output_len = in_buf->frameCount *
+ audio_bytes_per_sample(context->config.inputCfg.format) *
+ hw_acc_ctxt->cfg.output.num_channels;
+ buf_cfg.input_len = out_buf->frameCount *
+ audio_bytes_per_sample(context->config.outputCfg.format) *
+ hw_acc_ctxt->cfg.input.num_channels;
+
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_EFFECTS_GET_BUF_AVAIL, &buf_avail) < 0) {
+ ALOGE("AUDIO_EFFECTS_GET_BUF_AVAIL failed");
+ return -ENOMEM;
+ }
+
+ if (!hw_acc_ctxt->intial_buffer_done) {
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_EFFECTS_SET_BUF_LEN, &buf_cfg) < 0) {
+ ALOGE("AUDIO_EFFECTS_BUF_CFG failed");
+ return -EFAULT;
+ }
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_EFFECTS_WRITE, (char *)in_buf->raw) < 0) {
+ ALOGE("AUDIO_EFFECTS_WRITE failed");
+ return -EFAULT;
+ }
+ ALOGV("Request for more data");
+ hw_acc_ctxt->intial_buffer_done = true;
+ return -ENODATA;
+ }
+ if (buf_avail.output_num_avail > 1) {
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_EFFECTS_SET_BUF_LEN, &buf_cfg) < 0) {
+ ALOGE("AUDIO_EFFECTS_BUF_CFG failed");
+ return -EFAULT;
+ }
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_EFFECTS_WRITE, (char *)in_buf->raw) < 0) {
+ ALOGE("AUDIO_EFFECTS_WRITE failed");
+ return -EFAULT;
+ }
+ ret = in_buf->frameCount;
+ }
+ if (ioctl(hw_acc_ctxt->fd, AUDIO_EFFECTS_READ, (char *)out_buf->raw) < 0) {
+ ALOGE("AUDIO_EFFECTS_READ failed");
+ return -EFAULT;
+ }
+
+ return ret;
+}