diff --git a/cmake-proxies/cmake-modules/DependenciesList.cmake b/cmake-proxies/cmake-modules/DependenciesList.cmake
index a235cd1f7882ea8f6c5a6c72409c41958bb4990a..97a11e2330cf45f9a2e8ffa1870b5a4ae867d00a 100644
--- a/cmake-proxies/cmake-modules/DependenciesList.cmake
+++ b/cmake-proxies/cmake-modules/DependenciesList.cmake
@@ -11,15 +11,6 @@ audacity_find_package(libmp3lame REQUIRED)
audacity_find_package(mpg123 OPTION_NAME libmpg123)
-if( NOT ${_OPT}use_libmpg123 STREQUAL "off" )
- # If we are building against libmpg123, we need to drop
- # the previos configuration, which may used libmad
- set( USE_LIBMAD OFF CACHE INTERNAL "" FORCE )
- set( ${_OPT}use_libmad "off" )
-else()
- audacity_find_package(libmad)
-endif()
-
audacity_find_package(libid3tag)
audacity_find_package(WavPack)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3a47c93acc75fd63feaad88eae0bd5437a591da2..83d58dc2adc7a21e9308544499bc71d66e0d92e2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -591,10 +591,6 @@ list( APPEND SOURCES
import/ImportMIDI.h
>
- $<$<BOOL:${USE_LIBMAD}>:
- import/ImportMP3_MAD.cpp
- >
-
# Menus
menus/ClipMenus.cpp
@@ -1054,7 +1050,6 @@ set( LIBRARIES
PUBLIC
${CMAKE_REQUIRED_LIBRARIES}
ZLIB::ZLIB
- $<$<BOOL:${USE_LIBMAD}>:libmad::libmad>
$<$<BOOL:${USE_LIBOPUS}>:Opus::opus>
$<$<BOOL:${USE_MIDI}>:portmidi::portmidi>
$<$<BOOL:${USE_MIDI}>:portsmf>
@@ -1278,7 +1273,7 @@ else()
audio/x-flac
)
endif()
- if( USE_LIBMAD OR USE_LIBMPG123)
+ if( USE_LIBMPG123)
list( APPEND MIMETYPES
audio/mpeg
)
diff --git a/src/audacity_config.h.in b/src/audacity_config.h.in
index c2c1021d2156d322ef376179b0376813a66ff1bd..5e24a7fe6af97298e163fcb69188265f5e3118e9 100755
--- a/src/audacity_config.h.in
+++ b/src/audacity_config.h.in
@@ -60,9 +60,6 @@
/* Define if libid3tag is present */
#cmakedefine USE_LIBID3TAG 1
-/* Define if mp3 support is implemented with the libmad library */
-#cmakedefine USE_LIBMAD 1
-
/* Define if mp3 support is implemented with the libmpg123 library */
#cmakedefine USE_LIBMPG123 1
diff --git a/src/import/ImportMP3_MAD.cpp b/src/import/ImportMP3_MAD.cpp
deleted file mode 100644
index fa26eaca49dd577d9a2f7edd8f9beb6215e17754..0000000000000000000000000000000000000000
--- a/src/import/ImportMP3_MAD.cpp
+++ /dev/null
@@ -1,1114 +0,0 @@
-/**********************************************************************
-
- Audacity: A Digital Audio Editor
-
- ImportMP3_MAD.cpp
-
- Joshua Haberman
- Leland Lucius
-
-*//****************************************************************//**
-
-\class MP3ImportFileHandle
-\brief An ImportFileHandle for MP3 data
-
- Audacity has finally moved to using a single mp3 library on all
- platforms! It is the high performance, beautifully written libmad
- (mpeg audio decoder). Finally there is harmony in the mp3 universe.
-
- Much of this source code is based on 'minimad.c' as distributed
- with libmad.
-
-*//****************************************************************//**
-
-\class MP3ImportPlugin
-\brief An ImportPlugin for MP3 data
-
-*//*******************************************************************/
-
-
-
-#include <wx/defs.h>
-
-#include "Import.h"
-#include "BasicUI.h"
-#include "ImportPlugin.h"
-#include "Project.h"
-
-#define DESC XO("MP3 files")
-
-static const auto exts =
-{
- wxT("mp3"),
- wxT("mp2"),
- wxT("mpa")
-};
-
-#ifndef USE_LIBMAD
-
-static Importer::RegisteredUnusableImportPlugin registered
-{
- std::make_unique<UnusableImportPlugin>(DESC, FileExtensions(exts.begin(), exts.end()))
-};
-
-#else
-
-#if defined(__WXMSW__)
-#include <malloc.h>
-#else
-#include <stdlib.h>
-#endif
-
-#include <wx/file.h>
-
-#include "Prefs.h"
-#include "../Tags.h"
-#include "WaveTrack.h"
-#include "../widgets/AudacityMessageBox.h"
-#include "../widgets/ProgressDialog.h"
-
-// PRL: include these last,
-// and correct some preprocessor namespace pollution from wxWidgets that
-// caused a warning about duplicate definition
-#undef SIZEOF_LONG
-extern "C"
-{
-#include "mad.h"
-
-#ifdef USE_LIBID3TAG
-#include <id3tag.h>
-#endif
-}
-
-// Specifies the number of bytes in the input buffer. This also controls
-// how many bytes will be scanned when searching for the first MP3 frame.
-#define INPUT_BUFFER_SIZE 65535
-
-// This is the number of decoded samples libmad adds at the beginning
-// (This is an "observed" value.)
-#define MAD_DELAY 529
-
-class MP3ImportPlugin final : public ImportPlugin
-{
-public:
- MP3ImportPlugin();
- ~MP3ImportPlugin();
-
- wxString GetPluginStringID() override;
- TranslatableString GetPluginFormatDescription() override;
- std::unique_ptr<ImportFileHandle> Open(const FilePath &Filename, AudacityProject*) override;
-};
-
-using NewChannelGroup = std::vector< std::shared_ptr<WaveTrack> >;
-
-class MP3ImportFileHandle final : public ImportFileHandle
-{
-public:
- MP3ImportFileHandle(const FilePath &filename);
- ~MP3ImportFileHandle();
-
- TranslatableString GetFileDescription() override;
- ByteCount GetFileUncompressedBytes() override;
- ProgressResult Import(WaveTrackFactory *trackFactory, TrackHolders &outTracks, Tags *tags) override;
- wxInt32 GetStreamCount() override;
- const TranslatableStrings &GetStreamInfo() override;
- void SetStreamUsage(wxInt32 StreamID, bool Use) override;
-
-private:
- bool Open();
- void CheckTags();
- void CheckAPETags(bool atEnd);
- void CheckID3V1Tags();
- void CheckID3V2Tags(bool atEnd);
- void CheckLyrics();
- bool CheckMP3();
- bool FillBuffer();
- void LoadID3(Tags *tags);
-
- // The MAD callbacks
-
- static mad_flow input_cb(void *that,
- struct mad_stream *stream);
- mad_flow InputCB(struct mad_stream *stream);
-
- static mad_flow filter_cb(void *that,
- struct mad_stream const *stream,
- struct mad_frame *frame);
- mad_flow FilterCB(struct mad_stream const *stream, struct mad_frame *frame);
-
- static mad_flow output_cb(void *that,
- struct mad_header const *header,
- struct mad_pcm *pcm);
- mad_flow OutputCB(struct mad_header const *header, struct mad_pcm *pcm);
-
- static mad_flow error_cb(void *that,
- struct mad_stream *stream,
- struct mad_frame *frame);
- mad_flow ErrorCB(struct mad_stream *stream, struct mad_frame *frame);
-
-private:
- mad_decoder mDecoder;
-
- wxFile mFile;
- wxFileOffset mFilePos;
- wxFileOffset mFileLen;
-
- unsigned char mInputBuffer[INPUT_BUFFER_SIZE + MAD_BUFFER_GUARD];
- int mInputBufferLen;
-
- WaveTrackFactory *mTrackFactory;
- NewChannelGroup mChannels;
- unsigned mNumChannels;
-
- ProgressResult mUpdateResult;
-
- int mDelay;
- int mPadding;
-
- bool mHaveID3;
-
- friend MP3ImportPlugin;
-};
-
-// ============================================================================
-// MP3ImportPlugin
-// ============================================================================
-
-MP3ImportPlugin::MP3ImportPlugin()
-: ImportPlugin(FileExtensions(exts.begin(), exts.end()))
-{
-}
-
-MP3ImportPlugin::~MP3ImportPlugin()
-{
-}
-
-wxString MP3ImportPlugin::GetPluginStringID()
-{
- return wxT("libmad");
-}
-
-TranslatableString MP3ImportPlugin::GetPluginFormatDescription()
-{
- return DESC;
-}
-
-std::unique_ptr<ImportFileHandle> MP3ImportPlugin::Open(
- const FilePath &Filename, AudacityProject *)
-{
- auto handle = std::make_unique<MP3ImportFileHandle>(Filename);
-
- if (!handle->Open())
- {
- return nullptr;
- }
-
- return handle;
-}
-
-static Importer::RegisteredImportPlugin registered
-{
- "MP3",
- std::make_unique<MP3ImportPlugin>()
-};
-
-// ============================================================================
-// MP3ImportFileHandle
-// ============================================================================
-
-MP3ImportFileHandle::MP3ImportFileHandle(const FilePath &filename)
-: ImportFileHandle(filename)
-{
-}
-
-MP3ImportFileHandle::~MP3ImportFileHandle()
-{
-}
-
-TranslatableString MP3ImportFileHandle::GetFileDescription()
-{
- return DESC;
-}
-
-auto MP3ImportFileHandle::GetFileUncompressedBytes() -> ByteCount
-{
- // TODO
- return 0;
-}
-
-wxInt32 MP3ImportFileHandle::GetStreamCount()
-{
- return 1;
-}
-
-const TranslatableStrings &MP3ImportFileHandle::GetStreamInfo()
-{
- static TranslatableStrings empty;
- return empty;
-}
-
-void MP3ImportFileHandle::SetStreamUsage(wxInt32 WXUNUSED(StreamID), bool WXUNUSED(Use))
-{
-}
-
-ProgressResult MP3ImportFileHandle::Import(WaveTrackFactory *trackFactory,
- TrackHolders &outTracks,
- Tags *tags)
-{
- outTracks.clear();
-
- CreateProgress();
-
- mTrackFactory = trackFactory;
- mUpdateResult = ProgressResult::Success;
- mNumChannels = 0;
-
- // Set delay and padding to best possible in case the LAME tag is not present
- mDelay = MAD_DELAY;
- mPadding = 0;
-
- // Initialize decoder
- mad_decoder_init(&mDecoder, this, input_cb, 0, filter_cb, output_cb, error_cb, 0);
-
- // Send the decoder on its way!
- auto res = mad_decoder_run(&mDecoder, MAD_DECODER_MODE_SYNC);
-
- // Terminate decoder
- mad_decoder_finish(&mDecoder);
-
- // Decoding failed, so pass it on
- if (res != 0)
- {
- return ProgressResult::Failed;
- }
-
- // The user canceled the decoding, so bail without saving tracks or tags
- if (mUpdateResult == ProgressResult::Cancelled)
- {
- return mUpdateResult;
- }
-
- // Flush and trim the channels
- for (const auto &channel : mChannels)
- {
- channel->Flush();
-
- // Trim any padding
- if (mPadding)
- {
- double et = channel->GetEndTime();
- double t1 = et - channel->LongSamplesToTime(mPadding);
- channel->Clear(t1, et);
- }
-
- // And delay
- if (mDelay)
- {
- double st = channel->GetStartTime();
- double t0 = st + channel->LongSamplesToTime(mDelay);
- channel->Clear(st, t0);
- }
- }
-
- // Copy the WaveTrack pointers into the Track pointer list that
- // we are expected to fill
- outTracks.push_back(std::move(mChannels));
-
- // Load ID3 tags from the file
- LoadID3(tags);
-
- return mUpdateResult;
-}
-
-bool MP3ImportFileHandle::Open()
-{
- mInputBufferLen = 0;
- mFilePos = 0;
- mHaveID3 = false;
-
- // Open the file
- if (!mFile.Open(mFilename))
- {
- return false;
- }
-
- // Get the length of the file
- mFileLen = mFile.Seek(0, wxFromEnd);
- if (mFileLen == wxInvalidOffset || mFile.Error())
- {
- mFile.Close();
- return false;
- }
-
- if (mFile.Seek(0, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- mFile.Close();
- return false;
- }
-
- // Check for ID3 tags
- CheckTags();
-
- // Scan for the first MP3 frame
- if (!CheckMP3())
- {
- mFile.Close();
- return false;
- }
-
- return true;
-}
-
-void MP3ImportFileHandle::CheckTags()
-{
- // We do this twice to allow them to be in any order
- for (int i = 0; i < 2; ++i)
- {
- CheckAPETags(false);
- CheckID3V2Tags(false);
- }
-
- // We do this twice to allow them to be in any order. Even though ID3v1 is
- // supposed to at the end, some apps put the v2 tags after the v1 tags.
- for (int i = 0; i < 2; ++i)
- {
- CheckAPETags(true);
- CheckID3V1Tags();
- CheckLyrics();
- CheckID3V2Tags(true);
- }
-
- return;
-}
-
-void MP3ImportFileHandle::CheckAPETags(bool atEnd)
-{
- int offset = atEnd ? mFileLen - 32 : mFilePos;
-
- // Ensure file is positioned to start of (possible) tags
- if (mFile.Seek(offset, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return;
- }
-
- // An APE tag header is 32 bytes
- if (mFile.Read(mInputBuffer, 32) != 32 || mFile.Error())
- {
- return;
- }
-
- // Do we have an APE preamble?
- if (memcmp(mInputBuffer, "APETAGEX", 8) != 0)
- {
- return;
- }
-
- // Get the (little endian) length
- wxFileOffset len = (mInputBuffer[12] & 0xff) |
- ((mInputBuffer[13] & 0xff) << 8) |
- ((mInputBuffer[14] & 0xff) << 16) |
- ((mInputBuffer[15] & 0xff) << 24);
-
- // Get needed flags
- bool hasHeader = mInputBuffer[23] & 0x80;
-
- // Skip the tags
- if (!atEnd)
- {
- mFilePos += (32 + len);
- }
- else
- {
- mFileLen -= ((hasHeader ? 32 : 0) + len);
- }
-}
-
-void MP3ImportFileHandle::CheckID3V1Tags()
-{
- // Ensure file is positioned to start of (possible) tags
- if (mFile.Seek(mFileLen - 128, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return;
- }
-
- // An ID3v1 tag header is 3 bytes
- if (mFile.Read(mInputBuffer, 3) != 3 || mFile.Error())
- {
- return;
- }
-
- // Do we have ID3v1 tags?
- if (memcmp(mInputBuffer, "TAG", 3) != 0)
- {
- return;
- }
-
- // Adjust file length
- mFileLen -= 128;
-
- // Remember that we have tags
- mHaveID3 = true;
-}
-
-void MP3ImportFileHandle::CheckLyrics()
-{
- int offset = mFileLen - 9;
-
- // Ensure file is positioned to start of (possible) lyrics
- if (mFile.Seek(offset, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return;
- }
-
- // An Lyrics3 footeris 9 bytes
- if (mFile.Read(mInputBuffer, 9) != 9 || mFile.Error())
- {
- return;
- }
-
- // Found a v1 Lyrics footer?
- if (memcmp(mInputBuffer, "LYRICSEND", 9) == 0)
- {
- wxFileOffset pos = wxMax(offset - 5100, 0);
- size_t len = offset - pos;
-
- // Ensure file is positioned to start of (possible) lyrics
- if (mFile.Seek(pos, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return;
- }
-
- // Read the lyrics
- if (mFile.Read(mInputBuffer, len) != len || mFile.Error())
- {
- return;
- }
-
- // Search forward to find the beginning of the lyrics
- for (size_t i = 0; i < len; ++i)
- {
- if (memcmp(&mInputBuffer[i], "LYRICSBEGIN", 11) == 0)
- {
- // Adjust the file length to exclude the lyrics
- mFileLen = pos + i;
- break;
- }
- }
- }
- // Found a v2 Lyrics footer?
- else if (memcmp(mInputBuffer, "LYRICS200", 9) == 0)
- {
- // Ensure file is positioned to start of (possible) lyrics
- if (mFile.Seek(-15, wxFromCurrent) == wxInvalidOffset || mFile.Error())
- {
- return;
- }
-
- // An Lyrics3v2 length is 6 bytes
- if (mFile.Read(mInputBuffer, 6) != 6 || mFile.Error())
- {
- return;
- }
-
- // Adjust the file length to exclude the lyrics
- mInputBuffer[6] = 0;
- mFileLen -= (wxAtoi((char *) mInputBuffer) + 15);
- }
-}
-
-void MP3ImportFileHandle::CheckID3V2Tags(bool atEnd)
-{
- int offset = atEnd ? mFileLen - 10 : mFilePos;
-
- // Ensure file is positioned to start of (possible) tags
- if (mFile.Seek(offset, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return;
- }
-
- // An ID3v2 tag header is 10 bytes
- if (mFile.Read(mInputBuffer, 10) != 10 || mFile.Error())
- {
- return;
- }
-
- // Do we have an ID3v2 header or footer?
- if (memcmp(mInputBuffer, atEnd ? "3DI" : "ID3", 3) != 0)
- {
- return;
- }
-
- // Get and decode the length
- wxFileOffset len = (mInputBuffer[6] & 0x7f);
- len = (len << 7) | (mInputBuffer[7] & 0x7f);
- len = (len << 7) | (mInputBuffer[8] & 0x7f);
- len = (len << 7) | (mInputBuffer[9] & 0x7f);
-
- // Skip the tags
- if (!atEnd)
- {
- mFilePos += (10 + len);
- }
- else
- {
- mFileLen -= (10 + len + 10);
- }
-
- // Remember that we have tags
- mHaveID3 = true;
-}
-
-bool MP3ImportFileHandle::CheckMP3()
-{
- wxFileOffset savedPos = mFilePos;
-
- // Ensure file is positioned to start of 1st mp3 frame
- if (mFile.Seek(mFilePos, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return false;
- }
-
- // Load as much as will fit into the buffer
- if (!FillBuffer())
- {
- return false;
- }
-
- // Initialize mad stream
- mad_stream stream;
- mad_stream_init(&stream);
- mad_stream_buffer(&stream, mInputBuffer, mInputBufferLen);
-
- // And header
- mad_header header;
- mad_header_init(&header);
-
- // Scan the input buffer for 2 consecutive MP3 frames. When the header
- // decoder finds a frame, it decodes it and ensures it is followed by
- // another frame or EOF...thus 2 (or 1) consecutive frame(s) are detected.
- int consecutive = 1;
- while (consecutive > 0)
- {
- // Decode the header at the current stream position.
- if (mad_header_decode(&header, &stream))
- {
- // End of buffer.
- if (stream.error != MAD_ERROR_NONE)
- {
- break;
- }
- }
-
- consecutive -= 1;
- }
-
- // Remember how many bytes were processed
- int used = stream.this_frame - stream.buffer;
-
- // Cleanup
- mad_header_finish(&header);
- mad_stream_finish(&stream);
-
- // Did we find all that we wanted?
- if (consecutive)
- {
- return false;
- }
-
- // Reset file controls
- mInputBufferLen = 0;
-
- // Reposition file to start of mp3 frames to prepare for the Import.
- mFilePos = savedPos + used;
- if (mFile.Seek(mFilePos, wxFromStart) == wxInvalidOffset || mFile.Error())
- {
- return false;
- }
-
- // Looks like an MP3...
- return true;
-}
-
-bool MP3ImportFileHandle::FillBuffer()
-{
- // We either want enough to fill the input buffer or what's left in the file
- auto want = wxMin(INPUT_BUFFER_SIZE - mInputBufferLen, mFileLen - mFilePos);
- if (want > 0)
- {
- // We should always get what we ask for
- auto got = mFile.Read(&mInputBuffer[mInputBufferLen], want);
- if (got != want || mFile.Error())
- {
- return false;
- }
-
- // Adjust input control
- mInputBufferLen += got;
- mFilePos += got;
- }
-
- // MAD requires that we add MAD_BUFFER_GUARD extra bytes when we've processed
- // all of the MP3 frames. Otherwise, we will drop the last frame.
- if (mFilePos == mFileLen)
- {
- memset(&mInputBuffer[mInputBufferLen], 0, MAD_BUFFER_GUARD);
- mInputBufferLen += MAD_BUFFER_GUARD;
- }
-
- return true;
-}
-
-void MP3ImportFileHandle::LoadID3(Tags *tags)
-{
-#ifdef USE_LIBID3TAG
- struct id3_file *id3file = NULL;
- auto cleanup = finally([&]
- {
- if (id3file)
- {
- id3_file_close(id3file);
- }
- });
-
- // Use id3_file_fdopen() instead of id3_file_open since wxWidgets can open a
- // file with a Unicode name and id3_file_open() can't (under Windows).
- id3file = id3_file_fdopen(mFile.fd(), ID3_FILE_MODE_READONLY);
- if (!id3file)
- {
- return;
- }
-
- // The file descriptor is now owned by "id3file", so we must tell "mFile" to forget
- // about it.
- mFile.Detach();
-
- // Load the tags
- struct id3_tag *id3tags = id3_file_tag(id3file);
- if (!id3tags || id3tags->nframes == 0)
- {
- return;
- }
-
- // Convert from libid3tag's ucs4 type to wxString.
- //
- // The ucs4 type is unsigned long which can be 8 bytes instead
- // of the expected 4 bytes for a UTF-32 character, so we have
- // to convert to unsigned int and then to wxString.
- wxMBConvUTF32 converter;
- auto toString = [=](const id3_ucs4_t *in)
- {
- // Count the number of characters
- size_t len = 0;
- for (const id3_ucs4_t *p = in; *p; p++)
- {
- len++;
- }
-
- // Would like to use std::dynarray or runtime-sized array,
- // but VS doesn't support either.
- wxUint32 *buf = (wxUint32 *) alloca((len + 1) * sizeof(wxUint32));
-
- // Copy and convert to unsigned int
- wxUint32 *out;
- for (out = buf; *in; in++, out++)
- {
- *out = (wxUint32) (*in);
- }
- *out = 0;
-
- // Finally convert to and return wxString
- return wxString((char *) buf, converter);
- };
-
- tags->Clear();
-
- // Extract tags from ID3 frames and add to our tags
- bool have_year = false;
- for (unsigned int i = 0; i < id3tags->nframes; ++i)
- {
- struct id3_frame *frame = id3tags->frames[i];
-
-#if 0
- wxLogDebug("ID: %08x '%4s'", (int) *(int *)frame->id, frame->id);
- wxLogDebug("Desc: %s", frame->description);
- wxLogDebug("Num fields: %d", frame->nfields);
-
- for (unsigned int j = 0; j < frame->nfields; ++j)
- {
- wxLogDebug("field %d type %d", j, frame->fields[j].type);
- if (frame->fields[j].type == ID3_FIELD_TYPE_STRINGLIST)
- {
- wxLogDebug("num strings %d", frame->fields[j].stringlist.nstrings);
- }
- }
-#endif
-
- wxString n;
- wxString v;
-
- // Determine the tag name
- if (strcmp(frame->id, ID3_FRAME_TITLE) == 0)
- {
- n = TAG_TITLE;
- }
- else if (strcmp(frame->id, ID3_FRAME_ARTIST) == 0)
- {
- n = TAG_ARTIST;
- }
- else if (strcmp(frame->id, ID3_FRAME_ALBUM) == 0)
- {
- n = TAG_ALBUM;
- }
- else if (strcmp(frame->id, ID3_FRAME_TRACK) == 0)
- {
- n = TAG_TRACK;
- }
- else if (strcmp(frame->id, ID3_FRAME_YEAR) == 0)
- {
- // LLL: When libid3tag encounters the "TYER" tag, it converts it to a
- // "ZOBS" (obsolete) tag and adds a "TDRC" tag at the end of the
- // list of tags using the first 4 characters of the "TYER" tag.
- // Since we write both the "TDRC" and "TYER" tags, the "TDRC" tag
- // will always be encountered first in the list. We want to use
- // it since the converted "TYER" tag may have been truncated.
- if (have_year)
- {
- continue;
- }
- n = TAG_YEAR;
- have_year = true;
- }
- else if (strcmp(frame->id, ID3_FRAME_COMMENT) == 0)
- {
- n = TAG_COMMENTS;
- }
- else if (strcmp(frame->id, ID3_FRAME_GENRE) == 0)
- {
- n = TAG_GENRE;
- }
- else
- {
- // Use frame description as default tag name. The descriptions
- // may include several "meanings" separated by "/" characters, so
- // we just use the first meaning
- n = UTF8CTOWX(frame->description).BeforeFirst(wxT('/'));
- }
-
- // Now get the tag value
- const id3_ucs4_t *ustr = NULL;
-
- if (n == TAG_COMMENTS)
- {
- ustr = id3_field_getfullstring(&frame->fields[3]);
- }
- else if (frame->nfields == 3)
- {
- ustr = id3_field_getstring(&frame->fields[1]);
- if (ustr)
- {
- n = toString(ustr);
- }
-
- ustr = id3_field_getstring(&frame->fields[2]);
- }
- else if (frame->nfields >= 2)
- {
- ustr = id3_field_getstrings(&frame->fields[1], 0);
- }
-
- // Convert the value
- if (ustr)
- {
- v = toString(ustr);
- }
-
- // And add it to the list of tags
- if (!n.empty() && !v.empty())
- {
- tags->SetTag(n, v);
- }
- }
-
- // Convert v1 genre to name
- if (tags->HasTag(TAG_GENRE))
- {
- long g = -1;
- if (tags->GetTag(TAG_GENRE).ToLong(&g))
- {
- tags->SetTag(TAG_GENRE, tags->GetGenre(g));
- }
- }
-#else
- (void) tags;
-#endif
-}
-
-//
-// MAD Callbacks
-//
-
-// The input callback is called when the decoder wants more data
-mad_flow MP3ImportFileHandle::input_cb(void *that,
- struct mad_stream *stream)
-{
- auto cb = [&]()
- {
- return ((MP3ImportFileHandle *) that)->InputCB(stream);
- };
-
- return GuardedCall<mad_flow>(cb, MakeSimpleGuard(MAD_FLOW_BREAK));
-}
-
-mad_flow MP3ImportFileHandle::InputCB(struct mad_stream *stream)
-{
- // Update the progress
- mUpdateResult = mProgress->Update((wxLongLong_t) mFilePos, (wxLongLong_t) mFileLen);
- if (mUpdateResult != ProgressResult::Success)
- {
- return MAD_FLOW_STOP;
- }
-
- // Stop if we've consumed all of the MP3 data
- if (mFilePos == mFileLen)
- {
- return MAD_FLOW_STOP;
- }
-
- // "Each time you refill your buffer, you need to preserve the data in
- // your existing buffer from stream.next_frame to the end.
- //
- // This usually amounts to calling memmove() on this unconsumed portion
- // of the buffer and appending NEW data after it, before calling
- // mad_stream_buffer()
- // -- Rob Leslie, on the mad-dev mailing list
- if (stream->next_frame)
- {
- mInputBufferLen -= (stream->next_frame - mInputBuffer);
- memmove(mInputBuffer, stream->next_frame, mInputBufferLen);
- }
-
- // Refill the buffer
- if (!FillBuffer())
- {
- return MAD_FLOW_BREAK;
- }
-
- // And give it back to MAD
- mad_stream_buffer(stream, mInputBuffer, mInputBufferLen);
-
- return MAD_FLOW_CONTINUE;
-}
-
-// The filter callback lets us examine each frame and decide if it should be
-// kept or tossed. We use this to detect the Xing or LAME tags.
-mad_flow MP3ImportFileHandle::filter_cb(void *that,
- struct mad_stream const *stream,
- struct mad_frame *frame)
-{
- auto cb = [&]()
- {
- return ((MP3ImportFileHandle *) that)->FilterCB(stream, frame);
- };
-
- return GuardedCall<mad_flow>(cb, MakeSimpleGuard(MAD_FLOW_BREAK));
-}
-
-mad_flow MP3ImportFileHandle::FilterCB(struct mad_stream const *stream,
- struct mad_frame *frame)
-{
- // We only want to jinspect the first frame, so disable future calls
- mDecoder.filter_func = nullptr;
-
- // Is it a VBRI info frame?
- if (memcmp(&stream->this_frame[4 + 32], "VBRI", 4) == 0)
- {
- mDelay = (stream->this_frame[4 + 32 + 6] & 0xff) << 8 |
- (stream->this_frame[4 + 32 + 7] & 0xff);
-
- return MAD_FLOW_CONTINUE;
- }
-
- // Look for Xing/Info information
-
- // Get the ancillary data ptr and length. If the frame has CRC protection, we make
- // a small adjustment to get around an apparent bug in libmad.
- auto ptr = stream->anc_ptr.byte - (frame->header.flags & MAD_FLAG_PROTECTION ? 2 : 0);
- int len = stream->anc_bitlen / 8;
-
- // Ensure it's something we can understand
- if (len < 4 || (memcmp(ptr, "Xing", 4) != 0 && memcmp(ptr, "Info", 4) != 0))
- {
- return MAD_FLOW_CONTINUE;
- }
-
- // Skip the tag
- ptr += 4;
- len -= 4;
-
- enum flagBits
- {
- hasFrames = 0x0001,
- hasBytes = 0x0002,
- hasToc = 0x0004,
- hasScale = 0x0008
- };
-
- // Extract the flags
- unsigned int flags = (((((ptr[0] << 8) + ptr[1]) << 8) + ptr[2]) << 8) + ptr[3];
- ptr += 4;
- len -= 4;
-
- // Skip the number of frames
- if (len >= 4 && flags & hasFrames)
- {
- ptr += 4;
- len -= 4;
- }
-
- // Skip the number of bytes
- if (len >= 4 && flags & hasBytes)
- {
- ptr += 4;
- len -= 4;
- }
-
- // Skip the TOC
- if (len >= 100 && flags & hasToc)
- {
- ptr += 100;
- len -= 100;
- }
-
- // Skip the VBR Scale
- if (len >= 4 && flags & hasScale)
- {
- ptr += 4;
- len -= 4;
- }
-
- // Bail if LAME wasn't the encoder or we don't have enough ancillary data left
- if (len < 24 || memcmp(ptr, "LAME", 4) != 0)
- {
- return MAD_FLOW_IGNORE;
- }
-
- // Skip down to the delay and padding
- ptr += 21;
- len -= 21;
-
- // Extract the delay and padding and adjust for decoder delay
- mDelay = (ptr[0] << 4) + (ptr[1] >> 4) + MAD_DELAY;
- mPadding = ((ptr[1] & 0x0f) << 8) + ptr[2] - MAD_DELAY;
- if (mPadding < 0)
- {
- mPadding = 0;
- }
-
- return MAD_FLOW_IGNORE;
-}
-
-// The output callback is called every time the decoder has finished decoding
- // a frame, allowing us to use the decoded data
-mad_flow MP3ImportFileHandle::output_cb(void *that,
- struct mad_header const *header,
- struct mad_pcm *pcm)
-{
- auto cb = [&]()
- {
- return ((MP3ImportFileHandle *) that)->OutputCB(header, pcm);
- };
-
- return GuardedCall<mad_flow>(cb, MakeSimpleGuard(MAD_FLOW_BREAK));
-}
-
-enum mad_flow MP3ImportFileHandle::OutputCB(struct mad_header const * WXUNUSED(header),
- struct mad_pcm *pcm)
-{
- // If this is the first run, we need to create the WaveTracks that
- // will hold the data. We do this now because now is the first
- // moment when we know how many channels there are.
- if (mChannels.empty())
- {
- mNumChannels = pcm->channels;
-
- mChannels.resize(mNumChannels);
-
- for (auto &channel: mChannels)
- {
- // Mad library header explains the 32 bit fixed point format with
- // 28 fractional bits. Effective sample format must therefore be
- // more than 24, and this is our only choice now.
- channel = NewWaveTrack(*mTrackFactory, floatSample, pcm->samplerate);
- }
- }
-
- // Get the number of samples in each channel
- auto samples = pcm->length;
-
- // Convert libmad samples to float and append to WaveTracks
- for (int chn = 0; chn < mNumChannels; ++chn)
- {
- // Number of samples will never be more than 1152
- float sampleBuf[1152];
- wxASSERT(samples <= 1152);
-
- // Copy over the samples
- for (int sample = 0; sample < samples; ++sample)
- {
- // Convert libmad's fixed point representation to float
- sampleBuf[sample] = ((float) pcm->samples[chn][sample] / (1L << MAD_F_FRACBITS));
- }
-
- // And append to the channel
- mChannels[chn]->Append(
- (samplePtr) sampleBuf, floatSample, samples, 1,
- // Samples were 28 bit fixed-point converted to float:
- // see explanation above MAD_F_FRACBITS in mad.h
- // Effective sample format must therefore be
- // more than 24 bits, so this is our only choice.
- floatSample);
- }
-
- return MAD_FLOW_CONTINUE;
-}
-
-// The error callback is used when MAD encounters an error and needs to know
-// how it should proceed
-mad_flow MP3ImportFileHandle::error_cb(void *that,
- struct mad_stream *stream,
- struct mad_frame *frame)
-{
- auto cb = [&]()
- {
- return ((MP3ImportFileHandle *) that)->ErrorCB(stream, frame);
- };
-
- return GuardedCall<mad_flow>(cb, MakeSimpleGuard(MAD_FLOW_BREAK));
-}
-
-enum mad_flow MP3ImportFileHandle::ErrorCB(struct mad_stream *stream,
- struct mad_frame *frame)
-{
- // You always get a LOSTSYNC error at EOF, so just ignore it
- if (stream->error == MAD_ERROR_LOSTSYNC && mFilePos == mFileLen)
- {
- return MAD_FLOW_CONTINUE;
- }
-
- // This can happen when parsing the first frame. We can use the number of channels
- // to test for this since it hasn't been determined yet.
- if (stream->error == MAD_ERROR_BADDATAPTR && mNumChannels == 0)
- {
- return MAD_FLOW_CONTINUE;
- }
-
- // Let the user know about the error
- using namespace BasicUI;
- ShowErrorDialog( {},
- DefaultCaption(),
- XO("Import failed\n\nThis is likely caused by a malformed MP3.\n\n"),
- "Opening_malformed_MP3_files");
- return MAD_FLOW_BREAK;
-}
-
-#endif