144 lines
4.4 KiB
C
Executable File
144 lines
4.4 KiB
C
Executable File
/*
|
|
* Copyright 2020 Rockchip Electronics Co. LTD
|
|
*
|
|
* 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.
|
|
*
|
|
*
|
|
* Author: hh@rock-chips.com
|
|
* Date: 2021/11/27
|
|
*/
|
|
|
|
|
|
#include "audio_bitstream_manager.h"
|
|
#include <utils/Log.h>
|
|
#include <string.h>
|
|
#include "stdio.h"
|
|
#include <stdlib.h>
|
|
|
|
#ifdef LOG_TAG
|
|
#undef LOG_TAG
|
|
#endif
|
|
|
|
#define LOG_TAG "bitstream_manager"
|
|
#define PADDING_SIZE 32
|
|
|
|
rk_bistream* bitstream_init(enum pcm_format format, int samplerate, int channel) {
|
|
rk_bistream *bs = (rk_bistream*)malloc(sizeof(rk_bistream));
|
|
memset(bs, 0, sizeof(rk_bistream));
|
|
bs->format = format;
|
|
bs->samplerate = samplerate;
|
|
bs->channel = channel;
|
|
bs->buffer = NULL;
|
|
bs->chnStatus = NULL;
|
|
bs->firstFrame = true;
|
|
|
|
if (format == PCM_FORMAT_S24_LE) {
|
|
bs->chnStatus = malloc(CHASTA_SUB_NUM);
|
|
initchnsta(bs->chnStatus);
|
|
setChanSta(bs->chnStatus, samplerate, channel);
|
|
} else if (format == PCM_FORMAT_IEC958_SUBFRAME_LE) {
|
|
iec958_init(&bs->iec958, samplerate, channel, false);
|
|
} else {
|
|
ALOGD("%s: format = %d not support", __FUNCTION__, (int)format);
|
|
free(bs);
|
|
return NULL;
|
|
}
|
|
ALOGD("%s:%d format = %d, samplerate = %d, channel = %d",
|
|
__FUNCTION__, __LINE__, format, samplerate, channel);
|
|
return bs;
|
|
}
|
|
|
|
int bitstream_encode(rk_bistream *bs, char *inBuffer, int inSize, char **outBuffer, int *outSize) {
|
|
if (bs == NULL)
|
|
return -1;
|
|
|
|
if ((bs->buffer == NULL) || (bs->capaticy < inSize*2)) {
|
|
if (bs->buffer != NULL) {
|
|
free(bs->buffer);
|
|
}
|
|
|
|
bs->capaticy = inSize*2 + PADDING_SIZE;
|
|
bs->buffer = (char *)malloc(bs->capaticy);
|
|
ALOGD("%s: %d malloc bistream buffer(size = %d)", __FUNCTION__, __LINE__, bs->capaticy);
|
|
}
|
|
|
|
*outBuffer = bs->buffer;
|
|
*outSize = 0;
|
|
int ret = -1;
|
|
int offset = 0;
|
|
int size = 0;
|
|
/*
|
|
* this is for TV compatibility
|
|
* Our's HDMI/DRIVER may drop 1 sample for some reason which is 4 bytes for ac3/eac3/dts
|
|
* or 16bytes for DTS-HD/Atoms/TrueHD, some TV only identify the first frame which first
|
|
* received, if the sync word is lost in first frame, the TV don't identify the next frames
|
|
* and keep silence.
|
|
*/
|
|
char padding[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
|
|
int paddingSize = (bs->channel == 8) ? 16 : 4;
|
|
if (bs->format == PCM_FORMAT_S24_LE) {
|
|
#ifdef ADD_PADDING
|
|
if (bs->firstFrame) {
|
|
bs->firstFrame = false;
|
|
ALOGD("add padding size = %d", paddingSize);
|
|
fill_hdmi_bitstream_buf((void *)padding, (void *)bs->buffer, (void*)bs->chnStatus, paddingSize);
|
|
offset = 2*paddingSize;
|
|
}
|
|
#endif
|
|
|
|
ret = fill_hdmi_bitstream_buf((void *)inBuffer, (void *)&bs->buffer[offset], (void*)bs->chnStatus, (int)inSize);
|
|
*outSize = 2*inSize+offset;
|
|
} else if (bs->format == PCM_FORMAT_IEC958_SUBFRAME_LE) {
|
|
#ifdef ADD_PADDING
|
|
if (bs->firstFrame) {
|
|
bs->firstFrame = false;
|
|
ALOGD("add padding size = %d", paddingSize);
|
|
iec958_frame_encode(&bs->iec958, padding, paddingSize, bs->buffer, &offset);
|
|
*outSize += offset;
|
|
}
|
|
#endif
|
|
ret = iec958_frame_encode(&bs->iec958, inBuffer, inSize, &bs->buffer[offset], &size);
|
|
*outSize += size;
|
|
} else {
|
|
ALOGD("%s: format = %d not support", __FUNCTION__, (int)bs->format);
|
|
*outSize = 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void bitstream_destory(rk_bistream **bitstream) {
|
|
rk_bistream *bs = *bitstream;
|
|
if (bs == NULL)
|
|
return;
|
|
|
|
if (bs->format == PCM_FORMAT_S24_LE) {
|
|
if (bs->chnStatus != NULL) {
|
|
free(bs->chnStatus);
|
|
bs->chnStatus = NULL;
|
|
}
|
|
} else if (bs->format == PCM_FORMAT_IEC958_SUBFRAME_LE) {
|
|
}
|
|
|
|
if (bs->buffer != NULL) {
|
|
free(bs->buffer);
|
|
bs->buffer = NULL;
|
|
}
|
|
|
|
bs->capaticy = 0;
|
|
iec958_deInit(&bs->iec958);
|
|
free(bs);
|
|
*bitstream = NULL;
|
|
}
|
|
|