| /* |
| * Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| * Not a Contribution. |
| * |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "audio_hw_ssr" |
| /*#define LOG_NDEBUG 0*/ |
| #define LOG_NDDEBUG 0 |
| |
| #include <errno.h> |
| #include <cutils/properties.h> |
| #include <stdlib.h> |
| #include <dlfcn.h> |
| #include <cutils/str_parms.h> |
| #include <cutils/log.h> |
| |
| #include "audio_hw.h" |
| #include "platform.h" |
| #include "platform_api.h" |
| #include "surround_filters_interface.h" |
| |
| #ifdef SSR_ENABLED |
| #define COEFF_ARRAY_SIZE 4 |
| #define FILT_SIZE ((512+1)* 6) /* # ((FFT bins)/2+1)*numOutputs */ |
| #define SSR_FRAME_SIZE 512 |
| #define SSR_INPUT_FRAME_SIZE (SSR_FRAME_SIZE * 4) |
| #define SSR_OUTPUT_FRAME_SIZE (SSR_FRAME_SIZE * 6) |
| #define SSR_CHANNEL_COUNT 4 |
| #define SSR_PERIOD_SIZE 256 |
| #define SSR_PERIOD_COUNT 8 |
| |
| #define SURROUND_FILE_1R "/system/etc/surround_sound/filter1r.pcm" |
| #define SURROUND_FILE_2R "/system/etc/surround_sound/filter2r.pcm" |
| #define SURROUND_FILE_3R "/system/etc/surround_sound/filter3r.pcm" |
| #define SURROUND_FILE_4R "/system/etc/surround_sound/filter4r.pcm" |
| |
| #define SURROUND_FILE_1I "/system/etc/surround_sound/filter1i.pcm" |
| #define SURROUND_FILE_2I "/system/etc/surround_sound/filter2i.pcm" |
| #define SURROUND_FILE_3I "/system/etc/surround_sound/filter3i.pcm" |
| #define SURROUND_FILE_4I "/system/etc/surround_sound/filter4i.pcm" |
| #define AUDIO_PARAMETER_KEY_SSR "ssr" |
| #define LIB_SURROUND_PROC "libsurround_proc.so" |
| |
| typedef int (*surround_filters_init_t)(void *, int, int, Word16 **, |
| Word16 **, int, int, int, Profiler *); |
| typedef void (*surround_filters_release_t)(void *); |
| typedef int (*surround_filters_set_channel_map_t)(void *, const int *); |
| typedef void (*surround_filters_intl_process_t)(void *, Word16 *, Word16 *); |
| |
| struct ssr_module { |
| FILE *fp_4ch; |
| FILE *fp_6ch; |
| int16_t **real_coeffs; |
| int16_t **imag_coeffs; |
| void *surround_obj; |
| |
| int16_t *surround_input_buffer; |
| int16_t *surround_output_buffer; |
| int surround_input_bufferIdx; |
| int surround_output_bufferIdx; |
| bool is_ssr_enabled; |
| |
| void *surround_filters_handle; |
| surround_filters_init_t surround_filters_init; |
| surround_filters_release_t surround_filters_release; |
| surround_filters_set_channel_map_t surround_filters_set_channel_map; |
| surround_filters_intl_process_t surround_filters_intl_process; |
| }; |
| |
| static int32_t ssr_init_surround_sound_lib(unsigned long buffersize); |
| static int32_t ssr_read_coeffs_from_file(); |
| |
| static struct ssr_module ssrmod = { |
| .fp_4ch = NULL, |
| .fp_6ch= NULL, |
| .real_coeffs = NULL, |
| .imag_coeffs = NULL, |
| .surround_obj = NULL, |
| .surround_output_buffer = NULL, |
| .surround_input_buffer = NULL, |
| .surround_output_bufferIdx = 0, |
| .surround_input_bufferIdx= 0, |
| .is_ssr_enabled = 0, |
| |
| .surround_filters_handle = NULL, |
| .surround_filters_init = NULL, |
| .surround_filters_release = NULL, |
| .surround_filters_set_channel_map = NULL, |
| .surround_filters_intl_process = NULL, |
| }; |
| |
| /* Use AAC/DTS channel mapping as default channel mapping: C,FL,FR,Ls,Rs,LFE */ |
| static const int chan_map[] = { 1, 2, 4, 3, 0, 5}; |
| |
| /* Rotine to read coeffs from File and updates real and imaginary |
| coeff array member variable */ |
| static int32_t ssr_read_coeffs_from_file() |
| { |
| FILE *flt1r; |
| FILE *flt2r; |
| FILE *flt3r; |
| FILE *flt4r; |
| FILE *flt1i; |
| FILE *flt2i; |
| FILE *flt3i; |
| FILE *flt4i; |
| int i; |
| |
| if ( (flt1r = fopen(SURROUND_FILE_1R, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter co-efficient " |
| "file %s", __func__, SURROUND_FILE_1R); |
| return -EINVAL; |
| } |
| |
| if ( (flt2r = fopen(SURROUND_FILE_2R, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_2R); |
| return -EINVAL; |
| } |
| |
| if ( (flt3r = fopen(SURROUND_FILE_3R, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_3R); |
| return -EINVAL; |
| } |
| |
| if ( (flt4r = fopen(SURROUND_FILE_4R, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_4R); |
| return -EINVAL; |
| } |
| |
| if ( (flt1i = fopen(SURROUND_FILE_1I, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_1I); |
| return -EINVAL; |
| } |
| |
| if ( (flt2i = fopen(SURROUND_FILE_2I, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_2I); |
| return -EINVAL; |
| } |
| |
| if ( (flt3i = fopen(SURROUND_FILE_3I, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_3I); |
| return -EINVAL; |
| } |
| |
| if ( (flt4i = fopen(SURROUND_FILE_4I, "rb")) == NULL ) { |
| ALOGE("%s: Cannot open filter " |
| "co-efficient file %s", __func__, SURROUND_FILE_4I); |
| return -EINVAL; |
| } |
| ALOGV("%s: readCoeffsFromFile all filter " |
| "files opened", __func__); |
| |
| for (i=0; i<COEFF_ARRAY_SIZE; i++) { |
| ssrmod.real_coeffs[i] = (Word16 *)calloc(FILT_SIZE, sizeof(Word16)); |
| } |
| for (i=0; i<COEFF_ARRAY_SIZE; i++) { |
| ssrmod.imag_coeffs[i] = (Word16 *)calloc(FILT_SIZE, sizeof(Word16)); |
| } |
| |
| /* Read real co-efficients */ |
| if (NULL != ssrmod.real_coeffs[0]) { |
| fread(ssrmod.real_coeffs[0], sizeof(int16), FILT_SIZE, flt1r); |
| } |
| if (NULL != ssrmod.real_coeffs[0]) { |
| fread(ssrmod.real_coeffs[1], sizeof(int16), FILT_SIZE, flt2r); |
| } |
| if (NULL != ssrmod.real_coeffs[0]) { |
| fread(ssrmod.real_coeffs[2], sizeof(int16), FILT_SIZE, flt3r); |
| } |
| if (NULL != ssrmod.real_coeffs[0]) { |
| fread(ssrmod.real_coeffs[3], sizeof(int16), FILT_SIZE, flt4r); |
| } |
| |
| /* read imaginary co-efficients */ |
| if (NULL != ssrmod.imag_coeffs[0]) { |
| fread(ssrmod.imag_coeffs[0], sizeof(int16), FILT_SIZE, flt1i); |
| } |
| if (NULL != ssrmod.imag_coeffs[0]) { |
| fread(ssrmod.imag_coeffs[1], sizeof(int16), FILT_SIZE, flt2i); |
| } |
| if (NULL != ssrmod.imag_coeffs[0]) { |
| fread(ssrmod.imag_coeffs[2], sizeof(int16), FILT_SIZE, flt3i); |
| } |
| if (NULL != ssrmod.imag_coeffs[0]) { |
| fread(ssrmod.imag_coeffs[3], sizeof(int16), FILT_SIZE, flt4i); |
| } |
| |
| fclose(flt1r); |
| fclose(flt2r); |
| fclose(flt3r); |
| fclose(flt4r); |
| fclose(flt1i); |
| fclose(flt2i); |
| fclose(flt3i); |
| fclose(flt4i); |
| |
| return 0; |
| } |
| |
| static int32_t ssr_init_surround_sound_lib(unsigned long buffersize) |
| { |
| /* sub_woofer channel assignment: default as first |
| microphone input channel */ |
| int sub_woofer = 0; |
| /* frequency upper bound for sub_woofer: |
| frequency=(low_freq-1)/FFT_SIZE*samplingRate, default as 4 */ |
| int low_freq = 4; |
| /* frequency upper bound for spatial processing: |
| frequency=(high_freq-1)/FFT_SIZE*samplingRate, default as 100 */ |
| int high_freq = 100; |
| int i, ret = 0; |
| |
| ssrmod.surround_input_bufferIdx = 0; |
| ssrmod.surround_output_bufferIdx = 0; |
| |
| if ( ssrmod.surround_obj ) { |
| ALOGE("%s: ola filter library is already initialized", __func__); |
| return 0; |
| } |
| |
| /* Allocate memory for input buffer */ |
| ssrmod.surround_input_buffer = (Word16 *) calloc(2 * SSR_INPUT_FRAME_SIZE, |
| sizeof(Word16)); |
| if ( !ssrmod.surround_input_buffer ) { |
| ALOGE("%s: Memory allocation failure. Not able to allocate " |
| "memory for surroundInputBuffer", __func__); |
| goto init_fail; |
| } |
| |
| /* Allocate memory for output buffer */ |
| ssrmod.surround_output_buffer = (Word16 *) calloc(2 * SSR_OUTPUT_FRAME_SIZE, |
| sizeof(Word16)); |
| if ( !ssrmod.surround_output_buffer ) { |
| ALOGE("%s: Memory allocation failure. Not able to " |
| "allocate memory for surroundOutputBuffer", __func__); |
| goto init_fail; |
| } |
| |
| /* Allocate memory for real and imag coeffs array */ |
| ssrmod.real_coeffs = (Word16 **) calloc(COEFF_ARRAY_SIZE, sizeof(Word16 *)); |
| if ( !ssrmod.real_coeffs ) { |
| ALOGE("%s: Memory allocation failure during real " |
| "Coefficient array", __func__); |
| goto init_fail; |
| } |
| |
| ssrmod.imag_coeffs = (Word16 **) calloc(COEFF_ARRAY_SIZE, sizeof(Word16 *)); |
| if ( !ssrmod.imag_coeffs ) { |
| ALOGE("%s: Memory allocation failure during imaginary " |
| "Coefficient array", __func__); |
| goto init_fail; |
| } |
| |
| if( ssr_read_coeffs_from_file() != 0) { |
| ALOGE("%s: Error while loading coeffs from file", __func__); |
| goto init_fail; |
| } |
| |
| ssrmod.surround_filters_handle = dlopen(LIB_SURROUND_PROC, RTLD_NOW); |
| if (ssrmod.surround_filters_handle == NULL) { |
| ALOGE("%s: DLOPEN failed for %s", __func__, LIB_SURROUND_PROC); |
| } else { |
| ALOGV("%s: DLOPEN successful for %s", __func__, LIB_SURROUND_PROC); |
| ssrmod.surround_filters_init = (surround_filters_init_t) |
| dlsym(ssrmod.surround_filters_handle, "surround_filters_init"); |
| |
| ssrmod.surround_filters_release = (surround_filters_release_t) |
| dlsym(ssrmod.surround_filters_handle, "surround_filters_release"); |
| |
| ssrmod.surround_filters_set_channel_map = (surround_filters_set_channel_map_t) |
| dlsym(ssrmod.surround_filters_handle, "surround_filters_set_channel_map"); |
| |
| ssrmod.surround_filters_intl_process = (surround_filters_intl_process_t) |
| dlsym(ssrmod.surround_filters_handle, "surround_filters_intl_process"); |
| |
| if (!ssrmod.surround_filters_init || |
| !ssrmod.surround_filters_release || |
| !ssrmod.surround_filters_set_channel_map || |
| !ssrmod.surround_filters_intl_process){ |
| ALOGW("%s: Could not find the one of the symbols from %s", |
| __func__, LIB_SURROUND_PROC); |
| goto init_fail; |
| } |
| } |
| |
| /* calculate the size of data to allocate for surround_obj */ |
| ret = ssrmod.surround_filters_init(NULL, |
| 6, // Num output channel |
| 4, // Num input channel |
| ssrmod.real_coeffs, // Coeffs hardcoded in header |
| ssrmod.imag_coeffs, // Coeffs hardcoded in header |
| sub_woofer, |
| low_freq, |
| high_freq, |
| NULL); |
| |
| if ( ret > 0 ) { |
| ALOGV("%s: Allocating surroundObj size is %d", __func__, ret); |
| ssrmod.surround_obj = (void *)malloc(ret); |
| memset(ssrmod.surround_obj,0,ret); |
| if (NULL != ssrmod.surround_obj) { |
| /* initialize after allocating the memory for surround_obj */ |
| ret = ssrmod.surround_filters_init(ssrmod.surround_obj, |
| 6, |
| 4, |
| ssrmod.real_coeffs, |
| ssrmod.imag_coeffs, |
| sub_woofer, |
| low_freq, |
| high_freq, |
| NULL); |
| if (0 != ret) { |
| ALOGE("%s: surround_filters_init failed with ret:%d",__func__, ret); |
| ssrmod.surround_filters_release(ssrmod.surround_obj); |
| goto init_fail; |
| } |
| } else { |
| ALOGE("%s: Allocationg surround_obj failed", __func__); |
| goto init_fail; |
| } |
| } else { |
| ALOGE("%s: surround_filters_init(surround_obj=Null) " |
| "failed with ret: %d", __func__, ret); |
| goto init_fail; |
| } |
| |
| (void) ssrmod.surround_filters_set_channel_map(ssrmod.surround_obj, chan_map); |
| |
| return 0; |
| |
| init_fail: |
| if (ssrmod.surround_obj) { |
| free(ssrmod.surround_obj); |
| ssrmod.surround_obj = NULL; |
| } |
| if (ssrmod.surround_output_buffer) { |
| free(ssrmod.surround_output_buffer); |
| ssrmod.surround_output_buffer = NULL; |
| } |
| if (ssrmod.surround_input_buffer) { |
| free(ssrmod.surround_input_buffer); |
| ssrmod.surround_input_buffer = NULL; |
| } |
| if (ssrmod.real_coeffs){ |
| for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| if (ssrmod.real_coeffs[i]) { |
| free(ssrmod.real_coeffs[i]); |
| ssrmod.real_coeffs[i] = NULL; |
| } |
| } |
| free(ssrmod.real_coeffs); |
| ssrmod.real_coeffs = NULL; |
| } |
| if (ssrmod.imag_coeffs){ |
| for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| if (ssrmod.imag_coeffs[i]) { |
| free(ssrmod.imag_coeffs[i]); |
| ssrmod.imag_coeffs[i] = NULL; |
| } |
| } |
| free(ssrmod.imag_coeffs); |
| ssrmod.imag_coeffs = NULL; |
| } |
| |
| return -ENOMEM; |
| } |
| |
| int32_t audio_extn_ssr_update_enabled(struct audio_device *adev) |
| { |
| char ssr_enabled[PROPERTY_VALUE_MAX] = "false"; |
| |
| property_get("ro.qc.sdk.audio.ssr",ssr_enabled,"0"); |
| if (!strncmp("true", ssr_enabled, 4)) { |
| ALOGD("%s: surround sound recording is supported", __func__); |
| ssrmod.is_ssr_enabled = true; |
| } else { |
| ALOGD("%s: surround sound recording is not supported", __func__); |
| ssrmod.is_ssr_enabled = false; |
| } |
| return 0; |
| } |
| |
| bool audio_extn_ssr_get_enabled() |
| { |
| ALOGV("%s: is_ssr_enabled:%d", __func__, ssrmod.is_ssr_enabled); |
| return (ssrmod.is_ssr_enabled ? true: false); |
| } |
| |
| int32_t audio_extn_ssr_init(struct audio_device *adev, |
| struct stream_in *in) |
| { |
| uint32_t ret; |
| char c_multi_ch_dump[128] = {0}; |
| uint32_t buffer_size; |
| |
| ALOGD("%s: ssr case ", __func__); |
| in->config.channels = SSR_CHANNEL_COUNT; |
| in->config.period_size = SSR_PERIOD_SIZE; |
| in->config.period_count = SSR_PERIOD_COUNT; |
| |
| buffer_size = (SSR_PERIOD_SIZE)*(SSR_PERIOD_COUNT); |
| ALOGD("%s: buffer_size: %d", __func__, buffer_size); |
| |
| ret = ssr_init_surround_sound_lib(buffer_size); |
| if (0 != ret) { |
| ALOGE("%s: initSurroundSoundLibrary failed: %d " |
| "handle->bufferSize:%d", __func__, ret, buffer_size); |
| return ret; |
| } |
| |
| property_get("ssr.pcmdump",c_multi_ch_dump,"0"); |
| if (0 == strncmp("true",c_multi_ch_dump, sizeof("ssr.dump-pcm"))) { |
| /* Remember to change file system permission of data(e.g. chmod 777 data/), |
| otherwise, fopen may fail */ |
| if ( !ssrmod.fp_4ch) |
| ssrmod.fp_4ch = fopen("/data/media/0/4ch_ssr.pcm", "wb"); |
| if ( !ssrmod.fp_6ch) |
| ssrmod.fp_6ch = fopen("/data/media/0/6ch_ssr.pcm", "wb"); |
| if ((!ssrmod.fp_4ch) || (!ssrmod.fp_6ch)) |
| ALOGE("%s: mfp_4ch or mfp_6ch open failed: mfp_4ch:%p mfp_6ch:%p", |
| __func__, ssrmod.fp_4ch, ssrmod.fp_6ch); |
| } |
| |
| return 0; |
| } |
| |
| int32_t audio_extn_ssr_deinit() |
| { |
| int i; |
| |
| if (ssrmod.surround_obj) { |
| ALOGD("%s: entry", __func__); |
| ssrmod.surround_filters_release(ssrmod.surround_obj); |
| if (ssrmod.surround_obj) |
| free(ssrmod.surround_obj); |
| ssrmod.surround_obj = NULL; |
| if (ssrmod.real_coeffs){ |
| for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| if (ssrmod.real_coeffs[i]) { |
| free(ssrmod.real_coeffs[i]); |
| ssrmod.real_coeffs[i] = NULL; |
| } |
| } |
| free(ssrmod.real_coeffs); |
| ssrmod.real_coeffs = NULL; |
| } |
| if (ssrmod.imag_coeffs){ |
| for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| if (ssrmod.imag_coeffs[i]) { |
| free(ssrmod.imag_coeffs[i]); |
| ssrmod.imag_coeffs[i] = NULL; |
| } |
| } |
| free(ssrmod.imag_coeffs); |
| ssrmod.imag_coeffs = NULL; |
| } |
| if (ssrmod.surround_output_buffer){ |
| free(ssrmod.surround_output_buffer); |
| ssrmod.surround_output_buffer = NULL; |
| } |
| if (ssrmod.surround_input_buffer) { |
| free(ssrmod.surround_input_buffer); |
| ssrmod.surround_input_buffer = NULL; |
| } |
| |
| if ( ssrmod.fp_4ch ) fclose(ssrmod.fp_4ch); |
| if ( ssrmod.fp_6ch ) fclose(ssrmod.fp_6ch); |
| } |
| |
| if(ssrmod.surround_filters_handle) |
| { |
| dlclose(ssrmod.surround_filters_handle); |
| ssrmod.surround_filters_handle = NULL; |
| } |
| ALOGD("%s: exit", __func__); |
| |
| return 0; |
| } |
| |
| int32_t audio_extn_ssr_read(struct audio_stream_in *stream, |
| void *buffer, size_t bytes) |
| { |
| int processed = 0; |
| int processed_pending; |
| void *buffer_start = buffer; |
| unsigned period_bytes; |
| unsigned period_samples; |
| int read_pending, n; |
| size_t read_bytes = 0; |
| int samples = bytes >> 1; |
| |
| struct stream_in *in = (struct stream_in *)stream; |
| struct audio_device *adev = in->dev; |
| |
| period_bytes = in->config.period_size; |
| ALOGD("%s: period_size: %d", __func__, in->config.period_size); |
| period_samples = period_bytes >> 1; |
| |
| if (!ssrmod.surround_obj) |
| return -ENOMEM; |
| |
| do { |
| if (ssrmod.surround_output_bufferIdx > 0) { |
| ALOGV("%s: copy processed output " |
| "to buffer, surround_output_bufferIdx = %d", |
| __func__, ssrmod.surround_output_bufferIdx); |
| /* Copy processed output to buffer */ |
| processed_pending = ssrmod.surround_output_bufferIdx; |
| if (processed_pending > (samples - processed)) { |
| processed_pending = (samples - processed); |
| } |
| memcpy(buffer, ssrmod.surround_output_buffer, processed_pending * sizeof(Word16)); |
| buffer = (char*)buffer + processed_pending * sizeof(Word16); |
| processed += processed_pending; |
| if (ssrmod.surround_output_bufferIdx > processed_pending) { |
| /* Shift leftover samples to beginning of the buffer */ |
| memcpy(&ssrmod.surround_output_buffer[0], |
| &ssrmod.surround_output_buffer[processed_pending], |
| (ssrmod.surround_output_bufferIdx - processed_pending) * sizeof(Word16)); |
| } |
| ssrmod.surround_output_bufferIdx -= processed_pending; |
| } |
| |
| if (processed >= samples) { |
| ALOGV("%s: done processing buffer, " |
| "processed = %d", __func__, processed); |
| /* Done processing this buffer */ |
| break; |
| } |
| |
| /* Fill input buffer until there is enough to process */ |
| read_pending = SSR_INPUT_FRAME_SIZE - ssrmod.surround_input_bufferIdx; |
| read_bytes = ssrmod.surround_input_bufferIdx; |
| while (in->pcm && read_pending > 0) { |
| n = pcm_read(in->pcm, &ssrmod.surround_input_buffer[read_bytes], |
| period_bytes); |
| ALOGV("%s: pcm_read() returned n = %d buffer:%p size:%d", __func__, |
| n, &ssrmod.surround_input_buffer[read_bytes], period_bytes); |
| if (n && n != -EAGAIN) { |
| /* Recovery part of pcm_read. TODO:split recovery */ |
| return (ssize_t)n; |
| } |
| else if (n < 0) { |
| /* Recovery is part of pcm_write. TODO split is later */ |
| return (ssize_t)n; |
| } |
| else { |
| read_pending -= period_samples; |
| read_bytes += period_samples; |
| } |
| } |
| |
| |
| if (ssrmod.fp_4ch) { |
| fwrite( ssrmod.surround_input_buffer, 1, |
| SSR_INPUT_FRAME_SIZE * sizeof(Word16), ssrmod.fp_4ch); |
| } |
| |
| /* apply ssr libs to conver 4ch to 6ch */ |
| ssrmod.surround_filters_intl_process(ssrmod.surround_obj, |
| &ssrmod.surround_output_buffer[ssrmod.surround_output_bufferIdx], |
| (Word16 *)ssrmod.surround_input_buffer); |
| |
| /* Shift leftover samples to beginning of input buffer */ |
| if (read_pending < 0) { |
| memcpy(&ssrmod.surround_input_buffer[0], |
| &ssrmod.surround_input_buffer[SSR_INPUT_FRAME_SIZE], |
| (-read_pending) * sizeof(Word16)); |
| } |
| ssrmod.surround_input_bufferIdx = -read_pending; |
| |
| if (ssrmod.fp_6ch) { |
| fwrite( &ssrmod.surround_output_buffer[ssrmod.surround_output_bufferIdx], |
| 1, SSR_OUTPUT_FRAME_SIZE * sizeof(Word16), ssrmod.fp_6ch); |
| } |
| |
| ssrmod.surround_output_bufferIdx += SSR_OUTPUT_FRAME_SIZE; |
| ALOGV("%s: do_while loop: processed=%d, samples=%d\n", __func__, processed, samples); |
| } while (in->pcm && processed < samples); |
| read_bytes = processed * sizeof(Word16); |
| buffer = buffer_start; |
| |
| return 0; |
| } |
| |
| void audio_extn_ssr_get_parameters(struct str_parms *query, |
| struct str_parms *reply) |
| { |
| int ret, val; |
| char value[32]={0}; |
| |
| ret = str_parms_get_str(query, AUDIO_PARAMETER_KEY_SSR, value, sizeof(value)); |
| |
| if (ret >= 0) { |
| memcpy(value, "true", 4); |
| str_parms_add_str(reply, AUDIO_PARAMETER_KEY_SSR, value); |
| } |
| } |
| #endif /* SSR_ENABLED */ |