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@ -123,11 +123,13 @@ static u32 DecodeAdpcm(Core::Memory::Memory& memory, std::span<s16> out_buffer,
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return 0;
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}
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auto samples_to_process{
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std::min(req.end_offset - req.start_offset - req.offset, req.samples_to_read)};
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auto start_pos{req.start_offset + req.offset};
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auto samples_to_process{std::min(req.end_offset - start_pos, req.samples_to_read)};
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if (samples_to_process == 0) {
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return 0;
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}
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auto samples_to_read{samples_to_process};
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auto start_pos{req.start_offset + req.offset};
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auto samples_remaining_in_frame{start_pos % SamplesPerFrame};
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auto position_in_frame{(start_pos / SamplesPerFrame) * NibblesPerFrame +
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samples_remaining_in_frame};
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@ -225,13 +227,24 @@ static u32 DecodeAdpcm(Core::Memory::Memory& memory, std::span<s16> out_buffer,
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* @param args - The wavebuffer data, and information for how to decode it.
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*/
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void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuffersArgs& args) {
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static constexpr auto EndWaveBuffer = [](auto& voice_state, auto& wavebuffer, auto& index,
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auto& played_samples, auto& consumed) -> void {
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voice_state.wave_buffer_valid[index] = false;
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voice_state.loop_count = 0;
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if (wavebuffer.stream_ended) {
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played_samples = 0;
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}
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index = (index + 1) % MaxWaveBuffers;
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consumed++;
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};
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auto& voice_state{*args.voice_state};
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auto remaining_sample_count{args.sample_count};
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auto fraction{voice_state.fraction};
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const auto sample_rate_ratio{
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(Common::FixedPoint<49, 15>(args.source_sample_rate) / args.target_sample_rate) *
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args.pitch};
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const auto sample_rate_ratio{Common::FixedPoint<49, 15>(
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(f32)args.source_sample_rate / (f32)args.target_sample_rate * (f32)args.pitch)};
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const auto size_required{fraction + remaining_sample_count * sample_rate_ratio};
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if (size_required < 0) {
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@ -298,13 +311,13 @@ void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuf
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auto end_offset{wavebuffer.end_offset};
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if (wavebuffer.loop && voice_state.loop_count > 0 &&
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wavebuffer.loop_start_offset != 0 && wavebuffer.loop_end_offset != 0 &&
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wavebuffer.loop_start_offset <= wavebuffer.loop_end_offset) {
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start_offset = wavebuffer.loop_start_offset;
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end_offset = wavebuffer.loop_end_offset;
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}
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DecodeArg decode_arg{.buffer{wavebuffer.buffer},
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DecodeArg decode_arg{
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.buffer{wavebuffer.buffer},
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.buffer_size{wavebuffer.buffer_size},
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.start_offset{start_offset},
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.end_offset{end_offset},
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@ -313,7 +326,8 @@ void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuf
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.adpcm_context{nullptr},
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.target_channel{args.channel},
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.offset{offset},
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.samples_to_read{samples_to_read - samples_read}};
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.samples_to_read{samples_to_read - samples_read},
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};
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s32 samples_decoded{0};
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@ -350,31 +364,17 @@ void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuf
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temp_buffer_pos += samples_decoded;
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offset += samples_decoded;
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if (samples_decoded == 0 || offset >= end_offset - start_offset) {
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offset = 0;
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if (!wavebuffer.loop) {
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voice_state.wave_buffer_valid[wavebuffer_index] = false;
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voice_state.loop_count = 0;
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if (wavebuffer.stream_ended) {
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played_sample_count = 0;
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if (samples_decoded && offset < end_offset - start_offset) {
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continue;
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}
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wavebuffer_index = (wavebuffer_index + 1) % MaxWaveBuffers;
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wavebuffers_consumed++;
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} else {
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offset = 0;
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if (wavebuffer.loop) {
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voice_state.loop_count++;
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if (wavebuffer.loop_count >= 0 &&
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(voice_state.loop_count > wavebuffer.loop_count || samples_decoded == 0)) {
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voice_state.wave_buffer_valid[wavebuffer_index] = false;
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voice_state.loop_count = 0;
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if (wavebuffer.stream_ended) {
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played_sample_count = 0;
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}
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wavebuffer_index = (wavebuffer_index + 1) % MaxWaveBuffers;
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wavebuffers_consumed++;
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EndWaveBuffer(voice_state, wavebuffer, wavebuffer_index, played_sample_count,
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wavebuffers_consumed);
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}
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if (samples_decoded == 0) {
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@ -385,7 +385,9 @@ void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuf
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if (args.IsVoicePlayedSampleCountResetAtLoopPointSupported) {
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played_sample_count = 0;
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}
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}
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} else {
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EndWaveBuffer(voice_state, wavebuffer, wavebuffer_index, played_sample_count,
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wavebuffers_consumed);
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}
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}
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