mirror of https://github.com/nu774/fdkaac.git
173 lines
5.6 KiB
C
173 lines
5.6 KiB
C
/*
|
|
* Copyright (C) 2013 nu774
|
|
* For conditions of distribution and use, see copyright notice in COPYING
|
|
*/
|
|
#if HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
#if HAVE_STDINT_H
|
|
# include <stdint.h>
|
|
#endif
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "aacenc.h"
|
|
|
|
int aacenc_is_sbr_active(const aacenc_param_t *params)
|
|
{
|
|
switch (params->profile) {
|
|
case AOT_SBR: case AOT_PS: case AOT_MP2_SBR: case AOT_MP2_PS:
|
|
case AOT_DABPLUS_SBR: case AOT_DABPLUS_PS:
|
|
case AOT_DRM_SBR: case AOT_DRM_MPEG_PS:
|
|
return 1;
|
|
}
|
|
if (params->profile == AOT_ER_AAC_ELD && params->lowdelay_sbr)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
int aacenc_channel_mode(const pcm_sample_description_t *format)
|
|
{
|
|
uint32_t chanmask = format->channel_mask;
|
|
|
|
if (format->channels_per_frame > 6)
|
|
return 0;
|
|
if (!chanmask) {
|
|
static uint32_t defaults[] = { 0x4, 0x3, 0x7, 0, 0x37, 0x3f };
|
|
chanmask = defaults[format->channels_per_frame - 1];
|
|
}
|
|
switch (chanmask) {
|
|
case 0x3: return MODE_2;
|
|
case 0x4: return MODE_1;
|
|
case 0x7: return MODE_1_2;
|
|
case 0x37: return MODE_1_2_2;
|
|
case 0x3f: return MODE_1_2_2_1;
|
|
case 0x107: return MODE_1_2_1;
|
|
case 0x607: return MODE_1_2_2;
|
|
case 0x60f: return MODE_1_2_2_1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int aacenc_init(HANDLE_AACENCODER *encoder, const aacenc_param_t *params,
|
|
const pcm_sample_description_t *format,
|
|
AACENC_InfoStruct *info)
|
|
{
|
|
int channel_mode;
|
|
int aot;
|
|
|
|
*encoder = 0;
|
|
if ((channel_mode = aacenc_channel_mode(format)) == 0) {
|
|
fprintf(stderr, "ERROR: unsupported channel layout\n");
|
|
goto FAIL;
|
|
}
|
|
if (aacEncOpen(encoder, 0, 0) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: aacEncOpen() failed\n");
|
|
goto FAIL;
|
|
}
|
|
aot = (params->profile ? params->profile : AOT_AAC_LC);
|
|
if (aacEncoder_SetParam(*encoder, AACENC_AOT, aot) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: unsupported profile\n");
|
|
goto FAIL;
|
|
}
|
|
if (params->bitrate_mode == 0)
|
|
aacEncoder_SetParam(*encoder, AACENC_BITRATE, params->bitrate);
|
|
else if (aacEncoder_SetParam(*encoder, AACENC_BITRATEMODE,
|
|
params->bitrate_mode) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: unsupported bitrate mode\n");
|
|
goto FAIL;
|
|
}
|
|
if (aacEncoder_SetParam(*encoder, AACENC_SAMPLERATE,
|
|
format->sample_rate) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: unsupported sample rate\n");
|
|
goto FAIL;
|
|
}
|
|
aacEncoder_SetParam(*encoder, AACENC_CHANNELMODE, channel_mode);
|
|
aacEncoder_SetParam(*encoder, AACENC_BANDWIDTH, params->bandwidth);
|
|
aacEncoder_SetParam(*encoder, AACENC_CHANNELORDER, 1);
|
|
aacEncoder_SetParam(*encoder, AACENC_AFTERBURNER, !!params->afterburner);
|
|
|
|
if (aot == AOT_ER_AAC_ELD && params->lowdelay_sbr)
|
|
aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, 1);
|
|
|
|
if (aacEncoder_SetParam(*encoder, AACENC_TRANSMUX,
|
|
params->transport_format) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: unsupported transport format\n");
|
|
goto FAIL;
|
|
}
|
|
if (aacEncoder_SetParam(*encoder, AACENC_SIGNALING_MODE,
|
|
params->sbr_signaling) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: unsupported transport format\n");
|
|
goto FAIL;
|
|
}
|
|
if (params->adts_crc_check)
|
|
aacEncoder_SetParam(*encoder, AACENC_PROTECTION, 1);
|
|
if (params->header_period)
|
|
aacEncoder_SetParam(*encoder, AACENC_HEADER_PERIOD,
|
|
params->header_period);
|
|
|
|
if (aacEncEncode(*encoder, 0, 0, 0, 0) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: encoder initialization failed\n");
|
|
goto FAIL;
|
|
}
|
|
if (aacEncInfo(*encoder, info) != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: cannot retrieve encoder info\n");
|
|
goto FAIL;
|
|
}
|
|
return 0;
|
|
FAIL:
|
|
if (encoder)
|
|
aacEncClose(encoder);
|
|
return -1;
|
|
}
|
|
|
|
int aac_encode_frame(HANDLE_AACENCODER encoder,
|
|
const pcm_sample_description_t *format,
|
|
const int16_t *input, unsigned iframes,
|
|
uint8_t **output, uint32_t *olen, uint32_t *osize)
|
|
{
|
|
uint32_t ilen = iframes * format->channels_per_frame;
|
|
AACENC_BufDesc ibdesc = { 0 }, obdesc = { 0 };
|
|
AACENC_InArgs iargs = { 0 };
|
|
AACENC_OutArgs oargs = { 0 };
|
|
void *ibufs[] = { (void*)input };
|
|
void *obufs[1];
|
|
INT ibuf_ids[] = { IN_AUDIO_DATA };
|
|
INT obuf_ids[] = { OUT_BITSTREAM_DATA };
|
|
INT ibuf_sizes[] = { ilen * sizeof(int16_t) };
|
|
INT obuf_sizes[1];
|
|
INT ibuf_el_sizes[] = { sizeof(int16_t) };
|
|
INT obuf_el_sizes[] = { 1 };
|
|
AACENC_ERROR err;
|
|
unsigned channel_mode, obytes;
|
|
|
|
channel_mode = aacEncoder_GetParam(encoder, AACENC_CHANNELMODE);
|
|
obytes = 6144 / 8 * channel_mode;
|
|
if (!*output || *osize < obytes) {
|
|
*osize = obytes;
|
|
*output = realloc(*output, obytes);
|
|
}
|
|
obufs[0] = *output;
|
|
obuf_sizes[0] = obytes;
|
|
|
|
iargs.numInSamples = ilen ? ilen : -1; /* -1 for signaling EOF */
|
|
ibdesc.numBufs = 1;
|
|
ibdesc.bufs = ibufs;
|
|
ibdesc.bufferIdentifiers = ibuf_ids;
|
|
ibdesc.bufSizes = ibuf_sizes;
|
|
ibdesc.bufElSizes = ibuf_el_sizes;
|
|
obdesc.numBufs = 1;
|
|
obdesc.bufs = obufs;
|
|
obdesc.bufferIdentifiers = obuf_ids;
|
|
obdesc.bufSizes = obuf_sizes;
|
|
obdesc.bufElSizes = obuf_el_sizes;
|
|
|
|
err = aacEncEncode(encoder, &ibdesc, &obdesc, &iargs, &oargs);
|
|
if (err != AACENC_ENCODE_EOF && err != AACENC_OK) {
|
|
fprintf(stderr, "ERROR: aacEncEncode() failed\n");
|
|
return -1;
|
|
}
|
|
*olen = oargs.numOutBytes;
|
|
return oargs.numInSamples;
|
|
}
|