int aacenc_is_sbr_ratio_available()
{
#if AACENCODER_LIB_VL0 < 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1<4)
return 0;
#else
LIB_INFO lib_info;
aacenc_get_lib_info(&lib_info);
return lib_info.version > 0x03040800;
#endif
}
static
void put_tool_tag(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
HANDLE_AACENCODER encoder)
{
char tool_info[256];
char *p = tool_info;
LIB_INFO lib_info;
p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
aacenc_get_lib_info(&lib_info);
p += sprintf(p, "libfdk-aac %s, ", lib_info.versionStr);
if (params->bitrate_mode)
sprintf(p, "VBR mode %d", params->bitrate_mode);
else
sprintf(p, "CBR %dkbps",
aacEncoder_GetParam(encoder, AACENC_BITRATE) / 1000);
m4af_add_itmf_string_tag(m4af, M4AF_TAG_TOOL, tool_info);
}
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;
LIB_INFO lib_info;
*encoder = 0;
aacenc_get_lib_info(&lib_info);
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;
}
if (aacEncoder_SetParam(*encoder, AACENC_CHANNELMODE,
channel_mode) != AACENC_OK) {
fprintf(stderr, "ERROR: unsupported channel mode\n");
goto FAIL;
}
aacEncoder_SetParam(*encoder, AACENC_BANDWIDTH, params->bandwidth);
aacEncoder_SetParam(*encoder, AACENC_CHANNELORDER, 1);
aacEncoder_SetParam(*encoder, AACENC_AFTERBURNER, !!params->afterburner);
aacEncoder_SetParam(*encoder, AACENC_SBR_MODE, params->lowdelay_sbr);
#if AACENCODER_LIB_VL0 > 3 || (AACENCODER_LIB_VL0==3 && AACENCODER_LIB_VL1>=4)
if (lib_info.version > 0x03040800)
aacEncoder_SetParam(*encoder, AACENC_SBR_RATIO, params->sbr_ratio);
#endif
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: failed to set SBR signaling mode\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 aacenc_is_explicit_bw_compatible_sbr_signaling_available()
{
LIB_INFO lib_info;
aacenc_get_lib_info(&lib_info);
return lib_info.version > 0x03040900;
}
