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2026-09-13 06:19:49

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie
2026-09-13 06:19:50 +00:00
parent 5f4754b3e1
commit 13129506ba
1 changed files with 58 additions and 61 deletions
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src/audio_core/adsp/apps/opus/opus_decoder.cpp
+58 -61
View File
@@ -62,48 +62,60 @@ public:
// However, native opus can also work with swrescale:
// it uses planarfloat, we can resample to s16
AVCodec const* codec = avcodec_find_decoder_by_name("libopus");
bool is_libopus = codec != nullptr;
bool is_libopus = false;//codec != nullptr;
if (!codec) {
LOG_WARNING(Audio_DSP, "using ffmpeg native opus decoder");
codec = avcodec_find_decoder(AV_CODEC_ID_OPUS);
}
if (codec) {
if ((avc = avc ? avc : avcodec_alloc_context3(codec))) {
if (is_libopus) {
const std::array<u8, 2> mapping_arr{0, 1};
mappings = mappings ? mappings : mapping_arr.data();
// handles null codec
avcodec_free_context(&avc);
if ((avc = avcodec_alloc_context3(codec))) {
if (is_libopus) {
const std::array<u8, 2> mapping_arr{0, 1};
mappings = mappings ? mappings : mapping_arr.data();
// freed by avcodec_context_free()
u8 *edata = reinterpret_cast<u8*>(av_mallocz(OPUS_HEAD_SIZE + 2 * OPUS_MAX_CHANNELS + AV_INPUT_BUFFER_PADDING_SIZE));
ASSERT(edata);
edata[9] = u8(channel_count); //channels
edata[10] = u8(0); //opus->pre_skip
edata[16] = u8(0); //gain_db
edata[18] = u8(0); //channel_map
edata[OPUS_HEAD_SIZE + 0] = u8(total_stream_count);
edata[OPUS_HEAD_SIZE + 1] = u8(stereo_stream_count);
if (channel_count >= 1) edata[OPUS_HEAD_SIZE + 2] = mappings[0];
if (channel_count >= 2) edata[OPUS_HEAD_SIZE + 3] = mappings[1];
avc->extradata = edata;
avc->extradata_size = OPUS_HEAD_SIZE + 2 * channel_count;
}
// FFmpeg hardcodes sample rate
avc->sample_rate = sample_rate;
avc->request_sample_fmt = AV_SAMPLE_FMT_S16;
av_channel_layout_default(&avc->ch_layout, channel_count);
if (avcodec_open2(avc, codec, nullptr) >= 0) {
pkt = av_packet_alloc();
frame = av_frame_alloc();
return ResultSuccess;
}
avcodec_free_context(&avc);
// freed by avcodec_context_free()
u8 *edata = reinterpret_cast<u8*>(av_mallocz(OPUS_HEAD_SIZE + 2 * OPUS_MAX_CHANNELS + AV_INPUT_BUFFER_PADDING_SIZE));
ASSERT(edata);
edata[9] = u8(channel_count); //channels
edata[10] = u8(0); //opus->pre_skip
edata[16] = u8(0); //gain_db
edata[18] = u8(0); //channel_map
edata[OPUS_HEAD_SIZE + 0] = u8(total_stream_count);
edata[OPUS_HEAD_SIZE + 1] = u8(stereo_stream_count);
if (channel_count >= 1) edata[OPUS_HEAD_SIZE + 2] = mappings[0];
if (channel_count >= 2) edata[OPUS_HEAD_SIZE + 3] = mappings[1];
avc->extradata = edata;
avc->extradata_size = OPUS_HEAD_SIZE + 2 * channel_count;
}
// FFmpeg hardcodes sample rate
avc->sample_rate = sample_rate;
avc->request_sample_fmt = AV_SAMPLE_FMT_S16;
av_channel_layout_default(&avc->ch_layout, channel_count);
if (avcodec_open2(avc, codec, nullptr) >= 0) {
pkt = av_packet_alloc();
frame = av_frame_alloc();
if (swr_alloc_set_opts2(
&swr,
&avc->ch_layout, AV_SAMPLE_FMT_S16, 48000,
&avc->ch_layout, (enum AVSampleFormat)frame->format, 48000,
0, nullptr) >= 0) {
if (swr_init(swr) >= 0) {
return ResultSuccess;
}
}
}
swr_free(&swr);
av_frame_free(&frame);
av_packet_free(&pkt);
avcodec_free_context(&avc);
}
return Service::Audio::ResultLibOpusInternalError;
}
Result Shutdown() {
swr_free(&swr);
av_frame_free(&frame);
av_packet_free(&pkt);
avcodec_free_context(&avc);
@@ -127,44 +139,28 @@ public:
if (r == AVERROR(EAGAIN)) {
av_frame_unref(frame);
av_packet_unref(pkt);
if ((r = av_new_packet(pkt, int(input_data_size))) >= 0) {
std::memcpy(pkt->data, reinterpret_cast<const u8*>(input_data), input_data_size);
r = avcodec_send_packet(avc, pkt);
ASSERT(r >= 0);
} else {
return Service::Audio::ResultLibOpusInvalidState;
}
if ((r = av_new_packet(pkt, int(input_data_size))) < 0)
break;
std::memcpy(pkt->data, reinterpret_cast<const u8*>(input_data), input_data_size);
if ((r = avcodec_send_packet(avc, pkt)) < 0)
break;
} else if (r == AVERROR_EOF) {
av_frame_unref(frame);
break;
} else if (r >= 0) {
auto const input_bsize = av_samples_get_buffer_size(frame->linesize, frame->ch_layout.nb_channels, frame->nb_samples, AV_SAMPLE_FMT_S16, 1);
if (frame->format == AV_SAMPLE_FMT_S16) {
// input_bsize == output_bsize
ASSERT(size_t(int(output_data_size) - rem_output_bytes + input_bsize) <= size_t(output_data_size));
std::memcpy(reinterpret_cast<s16*>(output_data) + (int(output_data_size) - rem_output_bytes), frame->data[0], size_t(input_bsize));
std::memcpy(reinterpret_cast<s16*>(output_data + (int(output_data_size) - rem_output_bytes)), frame->data[0], size_t(input_bsize));
} else {
SwrContext *swr = nullptr;
if (swr_alloc_set_opts2(
&swr,
&avc->ch_layout,
AV_SAMPLE_FMT_S16,
48000,
&avc->ch_layout,
(enum AVSampleFormat)frame->format,
48000,
0,
nullptr
) >= 0) {
if (swr_init(swr) >= 0) {
int out_samples = int(av_rescale_rnd(swr_get_delay(swr, frame->sample_rate) + frame->nb_samples, frame->sample_rate, frame->sample_rate, AV_ROUND_UP));
uint8_t *output = nullptr;
av_samples_alloc(&output, frame->linesize, frame->ch_layout.nb_channels, out_samples, AV_SAMPLE_FMT_S16, 0);
out_samples = swr_convert(swr, &output, out_samples, (const uint8_t **)frame->data, frame->nb_samples);
std::memcpy(reinterpret_cast<s16*>(output_data) + (int(output_data_size) - rem_output_bytes), output, size_t(input_bsize));
av_freep(&output);
}
swr_free(&swr);
}
int out_samples = int(av_rescale_rnd(swr_get_delay(swr, frame->sample_rate) + frame->nb_samples, frame->sample_rate, frame->sample_rate, AV_ROUND_UP));
uint8_t *output = nullptr;
av_samples_alloc(&output, frame->linesize, frame->ch_layout.nb_channels, out_samples, AV_SAMPLE_FMT_S16, 0);
out_samples = swr_convert(swr, &output, out_samples, (const uint8_t **)frame->data, frame->nb_samples);
auto const output_bsize = av_samples_get_buffer_size(frame->linesize, frame->ch_layout.nb_channels, out_samples, AV_SAMPLE_FMT_S16, 1);
std::memcpy(reinterpret_cast<s16*>(output_data + (int(output_data_size) - rem_output_bytes)), output, size_t(output_bsize));
av_freep(&output);
}
out_sample_count += frame->nb_samples;
rem_output_bytes -= input_bsize;
@@ -183,6 +179,7 @@ public:
AVCodecContext* avc = nullptr;
AVPacket* pkt = nullptr;
AVFrame* frame = nullptr;
SwrContext* swr = nullptr;
};
} // namespace