Merge pull request #22368 from hrydgard/remove-minimp3

Remove minimp3

Common/Common.vcxproj

@@ -365,7 +365,6 @@
     <ClInclude Include="..\ext\lzma-sdk\LzmaDec.h" />
     <ClInclude Include="..\ext\lzma-sdk\Precomp.h" />
     <ClInclude Include="..\ext\lzma-sdk\RotateDefs.h" />
-    <ClInclude Include="..\ext\minimp3\minimp3.h" />
     <ClInclude Include="..\ext\naett-lib\naett.h" />
     <ClInclude Include="..\ext\naett-lib\src\naett_internal.h" />
     <ClInclude Include="..\ext\nanosvg\src\nanosvg.h" />
@@ -867,7 +866,6 @@
     <ClCompile Include="..\ext\lzma-sdk\Delta.c" />
     <ClCompile Include="..\ext\lzma-sdk\Lzma2Dec.c" />
     <ClCompile Include="..\ext\lzma-sdk\LzmaDec.c" />
-    <ClCompile Include="..\ext\minimp3\minimp3.cpp" />
     <ClCompile Include="..\ext\naett-lib\src\naett_core.c" />
     <ClCompile Include="..\ext\naett-lib\src\naett_win.c" />
     <ClCompile Include="..\ext\pugixml\pugixml.cpp" />

Common/Common.vcxproj.filters

@@ -515,9 +515,6 @@
     <ClInclude Include="Math\CrossSIMD.h">
       <Filter>Math</Filter>
     </ClInclude>
-    <ClInclude Include="..\ext\minimp3\minimp3.h">
-      <Filter>ext\minimp3</Filter>
-    </ClInclude>
     <ClInclude Include="..\ext\at3_standalone\atrac3data.h">
       <Filter>ext\at3_standalone</Filter>
     </ClInclude>
@@ -1246,9 +1243,6 @@
     <ClCompile Include="GPU\Vulkan\VulkanDescSet.cpp">
       <Filter>GPU\Vulkan</Filter>
     </ClCompile>
-    <ClCompile Include="..\ext\minimp3\minimp3.cpp">
-      <Filter>ext\minimp3</Filter>
-    </ClCompile>
     <ClCompile Include="..\ext\at3_standalone\atrac3.cpp">
       <Filter>ext\at3_standalone</Filter>
     </ClCompile>
@@ -1588,9 +1582,6 @@
     <Filter Include="ext\libchdr">
       <UniqueIdentifier>{b681797d-7747-487f-b448-5ef5b2d2805b}</UniqueIdentifier>
     </Filter>
-    <Filter Include="ext\minimp3">
-      <UniqueIdentifier>{83cd76d0-d1ac-4ed1-9bdc-11fb5a20e5d3}</UniqueIdentifier>
-    </Filter>
     <Filter Include="ext\at3_standalone">
       <UniqueIdentifier>{586da66e-922a-4479-9dac-9d608a1b9183}</UniqueIdentifier>
     </Filter>

Core/CMakeLists.txt

@@ -735,7 +735,7 @@ endif()
 
 list(APPEND CoreExtraLibs armips)
 
-target_link_libraries(Core GPU Common chdr kirk cityhash sfmt19937 xbrz xxhash rcheevos minimp3 at3_standalone lua
+target_link_libraries(Core GPU Common chdr kirk cityhash sfmt19937 xbrz xxhash rcheevos at3_standalone lua
 	aemu_postoffice_client ${CoreExtraLibs} ${CMAKE_DL_LIBS})
 
 # Winsock

Core/HW/SimpleAudioDec.cpp

@@ -26,8 +26,6 @@
 #include "Core/HW/BufferQueue.h"
 #include "Core/HW/Atrac3Standalone.h"
 
-#include "ext/minimp3/minimp3.h"
-
 #ifdef USE_FFMPEG
 
 extern "C" {
@@ -59,51 +57,6 @@ extern "C" {
 // * https://github.com/meerkat-cv/h264_decoder
 // * https://github.com/shengbinmeng/ffmpeg-h264-dec
 
-// minimp3-based decoder.
-class MiniMp3Audio : public AudioDecoder {
-public:
-	MiniMp3Audio() {
-		mp3dec_init(&mp3_);
-	}
-	~MiniMp3Audio() {}
-
-	bool Decode(const uint8_t* inbuf, int inbytes, int *inbytesConsumed, int outputChannels, int16_t *outbuf, int *outSamples) override {
-		_dbg_assert_(outputChannels == 2);
-
-		// When used from sceMp3LowLevelDecode, this fails to parse the mp3 header!
-		// It's because minimp3 is a bit more sensitive than ffmpeg - if you give it a buffer that's larger than the frame size,
-		// it'll check that there's a second matching frame before accepting. But in our case we only get one frame,
-		// but we do not know the size. So this might need some modifications in minimp3.
-		mp3dec_frame_info_t info{};
-		int samplesWritten = mp3dec_decode_frame(&mp3_, inbuf, inbytes, (mp3d_sample_t *)temp_, &info);
-		_dbg_assert_(samplesWritten <= MINIMP3_MAX_SAMPLES_PER_FRAME);
-		_dbg_assert_(info.channels <= 2);
-		if (info.channels == 1) {
-			for (int i = 0; i < samplesWritten; i++) {
-				outbuf[i * 2] = temp_[i];
-				outbuf[i * 2 + 1] = temp_[i];
-			}
-		} else {
-			memcpy(outbuf, temp_, 4 * samplesWritten);
-		}
-		*inbytesConsumed = info.frame_bytes;
-		*outSamples = samplesWritten;
-		return true;
-	}
-
-	bool IsOK() const override { return true; }
-	void SetChannels(int channels) override {
-		// Hmm. ignore for now.
-	}
-
-	PSPAudioType GetAudioType() const override { return PSP_CODEC_MP3; }
-
-private:
-	// We use the lowest-level API.
-	mp3dec_t mp3_{};
-	int16_t temp_[MINIMP3_MAX_SAMPLES_PER_FRAME]{};
-};
-
 // FFMPEG-based decoder. TODO: Replace with individual codecs.
 // Based on http://ffmpeg.org/doxygen/trunk/doc_2examples_2decoding_encoding_8c-example.html#_a13
 class FFmpegAudioDecoder : public AudioDecoder {
@@ -150,13 +103,6 @@ AudioDecoder *CreateAudioDecoder(PSPAudioType audioType, int sampleRateHz, int c
 	}
 
 	switch (audioType) {
-	// Our MiniMP3 backend has too many issues:
-	//   * Doesn't accept sample rate
-	//   * Doesn't accept data where there's only one valid frame if the buffer is bigger.
-	//     This prevents sceMp3LowLevelDecode from working, since nothing passes us the frame size.
-	//
-	// case PSP_CODEC_MP3:
-	// 	return new MiniMp3Audio();
 	case PSP_CODEC_AT3:
 	 	return CreateAtrac3Audio(channels, blockAlign, extraData, extraDataSize);
 	case PSP_CODEC_AT3PLUS:

UI/BackgroundAudio.cpp

@@ -1,9 +1,8 @@
+#include <memory>
 #include <string>
 #include <mutex>
 #include <algorithm>
 
-#include "ext/minimp3/minimp3_ex.h"
-
 #include "Common/File/VFS/VFS.h"
 #include "Common/UI/Root.h"
 
@@ -434,6 +433,114 @@ inline int16_t ConvertU8ToI16(uint8_t value) {
 	return ivalue * 255;
 }
 
+// Returns the size of the MPEG-1/2/2.5 Layer III frame whose header is at p, or 0 if it isn't one.
+static int Mp3FrameSize(const uint8_t *p, int *sampleRate) {
+	if (p[0] != 0xFF || (p[1] & 0xE0) != 0xE0 || (p[1] & 0x06) != 0x02) {
+		return 0;
+	}
+	static const int bitratesV1[16] = { 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0 };
+	static const int bitratesV2[16] = { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0 };
+	static const int sampleRatesV1[4] = { 44100, 48000, 32000, 0 };
+	const int version = (p[1] >> 3) & 3;  // 3 = MPEG-1, 2 = MPEG-2, 0 = MPEG-2.5.
+	if (version == 1) {
+		return 0;
+	}
+	const int bitrate = (version == 3 ? bitratesV1 : bitratesV2)[p[2] >> 4] * 1000;
+	int rate = sampleRatesV1[(p[2] >> 2) & 3];
+	if (!bitrate || !rate) {
+		return 0;
+	}
+	rate >>= (version == 3 ? 0 : (version == 2 ? 1 : 2));
+	*sampleRate = rate;
+	const int padding = (p[2] >> 1) & 1;
+	return (version == 3 ? 144 : 72) * bitrate / rate + padding;
+}
+
+// Checks for a Xing/Info frame, which some encoders put first. If it carries a LAME tag,
+// also returns the samples to trim from the start and end of the decoded stream.
+static bool ParseXingFrame(const uint8_t *p, int frameSize, int *delay, int *padding) {
+	const int version = (p[1] >> 3) & 3;
+	const bool mono = (p[3] >> 6) == 3;
+	const int sideInfoSize = version == 3 ? (mono ? 17 : 32) : (mono ? 9 : 17);
+	const int tagPos = 4 + sideInfoSize;
+	if (tagPos + 8 > frameSize || (memcmp(p + tagPos, "Xing", 4) && memcmp(p + tagPos, "Info", 4))) {
+		return false;
+	}
+	const uint8_t flags = p[tagPos + 7];
+	// Skip the optional frame count, byte count, seek table and quality fields.
+	static const int fieldSizes[4] = { 4, 4, 100, 4 };
+	int lamePos = tagPos + 8;
+	for (int i = 0; i < 4; i++) {
+		if (flags & (1 << i)) {
+			lamePos += fieldSizes[i];
+		}
+	}
+	if (lamePos + 24 <= frameSize && (!memcmp(p + lamePos, "LAME", 4) || !memcmp(p + lamePos, "Lav", 3))) {
+		const uint8_t *t = p + lamePos + 21;
+		// The decoder adds 529 samples of its own delay (and so drops them from the padding).
+		const int decoderDelay = 529;
+		*delay = ((t[0] << 4) | (t[1] >> 4)) + decoderDelay;
+		*padding = std::max(0, (((t[1] & 0xF) << 8) | t[2]) - decoderDelay);
+	}
+	return true;
+}
+
+static Sample *LoadMp3(const uint8_t *data, size_t size) {
+	size_t pos = 0;
+	// Skip an ID3v2 tag.
+	if (size >= 10 && !memcmp(data, "ID3", 3)) {
+		pos = 10 + (((data[6] & 0x7F) << 21) | ((data[7] & 0x7F) << 14) | ((data[8] & 0x7F) << 7) | (data[9] & 0x7F));
+		if (data[5] & 0x10) {
+			pos += 10;  // Footer.
+		}
+	}
+
+	std::unique_ptr<AudioDecoder> decoder;
+	std::vector<int16_t> samples;
+	int16_t frameBuf[1152 * 2];
+	int sampleRate = 0;
+	int delay = 0;
+	int padding = 0;
+	while (pos + 4 <= size) {
+		int frameRate = 0;
+		int frameSize = Mp3FrameSize(data + pos, &frameRate);
+		if (frameSize == 0 || pos + frameSize > size) {
+			// Resync, byte by byte.
+			pos++;
+			continue;
+		}
+		if (!decoder) {
+			sampleRate = frameRate;
+			decoder.reset(CreateAudioDecoder(PSP_CODEC_MP3, sampleRate, 2));
+			if (ParseXingFrame(data + pos, frameSize, &delay, &padding)) {
+				// It decodes to silence.
+				pos += frameSize;
+				continue;
+			}
+		}
+		int consumed = 0;
+		int outSamples = 0;
+		if (frameRate == sampleRate && decoder->Decode(data + pos, frameSize, &consumed, 2, frameBuf, &outSamples)) {
+			samples.insert(samples.end(), frameBuf, frameBuf + outSamples * 2);
+		}
+		pos += frameSize;
+	}
+
+	// Trim the encoder delay and padding, in stereo frames.
+	const size_t trim = (size_t)(delay + padding) * 2;
+	if (samples.size() > trim) {
+		samples.erase(samples.end() - padding * 2, samples.end());
+		samples.erase(samples.begin(), samples.begin() + delay * 2);
+	}
+
+	if (samples.empty()) {
+		return nullptr;
+	}
+	int16_t *sampleData = new int16_t[samples.size()];
+	memcpy(sampleData, samples.data(), samples.size() * sizeof(int16_t));
+	return new Sample(sampleData, 2, (int)samples.size() / 2, sampleRate);
+}
+
 Sample *Sample::Load(const std::string &path) {
 	size_t data_size = 0;
 	uint8_t *data = g_VFS.ReadFile(path.c_str(), &data_size);
@@ -442,7 +549,6 @@ Sample *Sample::Load(const std::string &path) {
 		return nullptr;
 	}
 
-	const char *mp3_magic = "ID3\03";
 	const char *wav_magic = "RIFF";
 	if (!memcmp(data, wav_magic, 4)) {
 		RIFFReader reader(data, (int)data_size);
@@ -476,25 +582,12 @@ Sample *Sample::Load(const std::string &path) {
 		return new Sample(samples, wave.num_channels, actualFrames, wave.sample_rate);
 	}
 
-	// Something else.
-	// Let's see if minimp3 can read it.
-	mp3dec_t mp3d;
-	mp3dec_init(&mp3d);
-	mp3dec_file_info_t mp3_info;
-	int retval = mp3dec_load_buf(&mp3d, data, data_size, &mp3_info, nullptr, nullptr);
-
-	if (retval < 0 || mp3_info.samples == 0) {
-		ERROR_LOG(Log::Audio, "Couldn't load MP3 for sound effect from %s", path.c_str());
-		return nullptr;
-	}
-
-	// mp3_info contains the decoded data.
-	int16_t *sample_data = new int16_t[mp3_info.samples];
-	memcpy(sample_data, mp3_info.buffer, mp3_info.samples * sizeof(int16_t));
-
-	Sample *sample = new Sample(sample_data, mp3_info.channels, (int)mp3_info.samples / mp3_info.channels, mp3_info.hz);
-	free(mp3_info.buffer);
+	// Something else, try MP3.
+	Sample *sample = LoadMp3(data, data_size);
 	delete[] data;
+	if (!sample) {
+		ERROR_LOG(Log::Audio, "Couldn't load MP3 for sound effect from %s", path.c_str());
+	}
 	return sample;
 }
 

UI/MiscScreens.cpp

@@ -717,7 +717,6 @@ void CreditsScroller::Draw(UIContext &dc) {
 		"zstd",
 		"glew",
 		"libchdr",
-		"minimp3",
 		"xxhash",
 		"naett-http",
 		"PSP SDK",

UWP/CommonUWP/CommonUWP.vcxproj

@@ -291,8 +291,6 @@
     <ClInclude Include="..\..\ext\lzma-sdk\LzmaDec.h" />
     <ClInclude Include="..\..\ext\lzma-sdk\Precomp.h" />
     <ClInclude Include="..\..\ext\lzma-sdk\RotateDefs.h" />
-    <ClInclude Include="..\..\ext\minimp3\minimp3.h" />
-    <ClInclude Include="..\..\ext\minimp3\minimp3_ex.h" />
     <ClInclude Include="..\..\ext\naett-lib\naett.h" />
     <ClInclude Include="..\..\ext\naett-lib\src\naett_internal.h" />
     <ClInclude Include="..\..\ext\pugixml\pugiconfig.hpp" />
@@ -476,7 +474,6 @@
     <ClCompile Include="..\..\ext\lzma-sdk\Delta.c" />
     <ClCompile Include="..\..\ext\lzma-sdk\Lzma2Dec.c" />
     <ClCompile Include="..\..\ext\lzma-sdk\LzmaDec.c" />
-    <ClCompile Include="..\..\ext\minimp3\minimp3.cpp" />
     <ClCompile Include="..\..\ext\naett-lib\src\naett_core.c" />
     <ClCompile Include="..\..\ext\naett-lib\src\naett_win.c" />
     <ClCompile Include="..\..\ext\pugixml\pugixml.cpp" />

UWP/CommonUWP/CommonUWP.vcxproj.filters

@@ -97,9 +97,6 @@
     <Filter Include="ext\naett-lib">
       <UniqueIdentifier>{403c3154-5e8a-4da1-ba82-8f69bef25e14}</UniqueIdentifier>
     </Filter>
-    <Filter Include="ext\minimp3">
-      <UniqueIdentifier>{7b5c3ddc-225d-48d5-a829-9a1e71e304be}</UniqueIdentifier>
-    </Filter>
     <Filter Include="ext\at3_standalone">
       <UniqueIdentifier>{47e3b9c8-3a5f-4c78-b62b-3fa65bf23594}</UniqueIdentifier>
     </Filter>
@@ -473,9 +470,6 @@
     <ClCompile Include="..\..\ext\naett-lib\src\naett_win.c">
       <Filter>ext\naett-lib</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\ext\minimp3\minimp3.cpp">
-      <Filter>ext\minimp3</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\ext\at3_standalone\atrac.cpp">
       <Filter>ext\at3_standalone</Filter>
     </ClCompile>
@@ -1006,12 +1000,6 @@
     <ClInclude Include="..\..\Common\Math\CrossSIMD.h">
       <Filter>Math</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\ext\minimp3\minimp3.h">
-      <Filter>ext\minimp3</Filter>
-    </ClInclude>
-    <ClInclude Include="..\..\ext\minimp3\minimp3_ex.h">
-      <Filter>ext\minimp3</Filter>
-    </ClInclude>
     <ClInclude Include="..\..\ext\at3_standalone\aac_defines.h">
       <Filter>ext\at3_standalone</Filter>
     </ClInclude>

android/jni/Android.mk

@@ -168,9 +168,6 @@ NAETT_FILES := \
   ${SRC}/ext/naett-lib/src/naett_core.c \
   ${SRC}/ext/naett-lib/src/naett_android.c
 
-MINIMP3_FILES := \
-    ${SRC}/ext/minimp3/minimp3.cpp
-
 AT3_STANDALONE_FILES := \
 	${SRC}/ext/at3_standalone/atrac.cpp \
 	${SRC}/ext/at3_standalone/atrac3.cpp \
@@ -306,7 +303,6 @@ EXEC_AND_LIB_FILES := \
   $(SPIRV_CROSS_FILES) \
   $(RCHEEVOS_FILES) \
   $(NAETT_FILES) \
-  $(MINIMP3_FILES) \
   $(AT3_STANDALONE_FILES) \
   $(EXT_FILES) \
   $(NATIVE_FILES) \

ext/CMakeLists.txt

@@ -31,7 +31,6 @@ set(ENABLE_GLSLANG_INSTALL OFF)
 add_subdirectory(glslang EXCLUDE_FROM_ALL)
 add_subdirectory(snappy)
 add_subdirectory(lua-build)
-add_subdirectory(minimp3)
 add_subdirectory(at3_standalone)
 add_subdirectory(udis86)
 add_subdirectory(SPIRV-Cross-build)

ext/minimp3/CMakeLists.txt

@@ -1,12 +0,0 @@
-cmake_minimum_required (VERSION 3.16)
-project (minimp3)
-
-set(SRC_DIR .)
-
-# format
-set(ALL_SOURCE_FILES
-	# rapi
-	${SRC_DIR}/minimp3.cpp
-	)
-
-add_library(minimp3 STATIC ${ALL_SOURCE_FILES})

ext/minimp3/minimp3.cpp

@@ -1,11 +0,0 @@
-// Gotta define it somewhere.
-#define MINIMP3_IMPLEMENTATION
-#define MINIMP3_NO_STDIO
-
-#ifdef _MSC_VER
-#pragma warning(disable:4267)
-#pragma warning(disable:4244)
-#endif
-
-#include "minimp3.h"
-#include "minimp3_ex.h"

libretro/Makefile.common

@@ -25,7 +25,6 @@ INCFLAGS += \
 	-I$(EXTDIR)/glslang \
 	-I$(EXTDIR)/glslang-build \
 	-I$(EXTDIR)/native \
-	-I$(EXTDIR)/minimp3 \
 	-I$(EXTDIR)/zlib \
 	-I$(EXTDIR)/cpu_features/include \
 	-I$(ZSTDDIR) \
@@ -174,9 +173,6 @@ endif
 
 SOURCES_C += $(LIBRETRODIR)/ext/glew/glew.c
 
-SOURCES_CXX += \
-	$(EXTDIR)/minimp3/minimp3.cpp
-
 SOURCES_C += \
 	$(EXTDIR)/libkirk/AES.c \
 	$(EXTDIR)/libkirk/amctrl.c \