static void *aac_create(obs_data_t settings, obs_encoder_t encoder)
{
struct aac_encoder *enc;
int bitrate = (int)obs_data_getint(settings, "bitrate");
audio_t audio = obs_encoder_audio(encoder);
if (!bitrate) {
aac_warn("aac_create", "Invalid bitrate specified");
return NULL;
}
avcodec_register_all();
enc = bzalloc(sizeof(struct aac_encoder));
enc->encoder = encoder;
enc->aac = avcodec_find_encoder(AV_CODEC_ID_AAC);
if (!enc->aac) {
aac_warn("aac_create", "Couldn't find encoder");
goto fail;
}
blog(LOG_INFO, "Using ffmpeg \"%s\" aac encoder", enc->aac->name);
enc->context = avcodec_alloc_context3(enc->aac);
if (!enc->context) {
aac_warn("aac_create", "Failed to create codec context");
goto fail;
}
enc->context->bit_rate = bitrate * 1000;
enc->context->channels = (int)audio_output_channels(audio);
enc->context->sample_rate = audio_output_samplerate(audio);
enc->context->sample_fmt = enc->aac->sample_fmts ?
enc->aac->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
init_sizes(enc, audio);
/* enable experimental FFmpeg encoder if the only one available */
enc->context->strict_std_compliance = -2;
enc->context->flags = CODEC_FLAG_GLOBAL_HEADER;
if (initialize_codec(enc))
return enc;
fail:
aac_destroy(enc);
return NULL;
}
static void *aac_create(obs_data_t *settings, obs_encoder_t *encoder)
{
struct aac_encoder *enc;
int bitrate = (int)obs_data_get_int(settings, "bitrate");
audio_t *audio = obs_encoder_audio(encoder);
avcodec_register_all();
enc = bzalloc(sizeof(struct aac_encoder));
enc->encoder = encoder;
enc->aac = avcodec_find_encoder(AV_CODEC_ID_AAC);
blog(LOG_INFO, "---------------------------------");
if (!enc->aac) {
warn("Couldn't find encoder");
goto fail;
}
if (!bitrate) {
warn("Invalid bitrate specified");
return NULL;
}
enc->context = avcodec_alloc_context3(enc->aac);
if (!enc->context) {
warn("Failed to create codec context");
goto fail;
}
enc->context->bit_rate = bitrate * 1000;
enc->context->channels = (int)audio_output_get_channels(audio);
enc->context->sample_rate = audio_output_get_sample_rate(audio);
enc->context->sample_fmt = enc->aac->sample_fmts ?
enc->aac->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
/* if using FFmpeg's AAC encoder, at least set a cutoff value
* (recommended by konverter) */
if (strcmp(enc->aac->name, "aac") == 0) {
int cutoff1 = 4000 + (int)enc->context->bit_rate / 8;
int cutoff2 = 12000 + (int)enc->context->bit_rate / 8;
int cutoff3 = enc->context->sample_rate / 2;
int cutoff;
cutoff = MIN(cutoff1, cutoff2);
cutoff = MIN(cutoff, cutoff3);
enc->context->cutoff = cutoff;
}
info("bitrate: %" PRId64 ", channels: %d",
enc->context->bit_rate / 1000, enc->context->channels);
init_sizes(enc, audio);
/* enable experimental FFmpeg encoder if the only one available */
enc->context->strict_std_compliance = -2;
enc->context->flags = CODEC_FLAG_GLOBAL_HEADER;
if (initialize_codec(enc))
return enc;
fail:
aac_destroy(enc);
return NULL;
}