alac-decoder (#2176)

This commit is contained in:
atkawa7 2017-12-09 02:33:33 -06:00 committed by Robert Schumacher
parent 19860a0933
commit 9f0d33b6ad
5 changed files with 287 additions and 0 deletions

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@ -0,0 +1,50 @@
cmake_minimum_required (VERSION 3.9)
project (alac_decoder)
set(HEADERS
decomp.h
demux.h
stream.h
wavwriter.h
)
set (SRCS
decomp.c
alac.c
demux.c
stream.c
wavwriter.c
)
if(MSVC)
add_compile_options(/W4 -D_CRT_SECURE_NO_WARNINGS -DTARGET_OS_WIN32)
endif()
if(BUILD_SHARED_LIBS)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
endif()
include_directories(.)
add_library(libalac_decoder ${SRCS})
add_executable(alac_decoder main.c)
target_link_libraries(alac_decoder libalac_decoder)
install(
TARGETS libalac_decoder
RUNTIME DESTINATION bin
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib
)
if(NOT DISABLE_INSTALL_TOOLS)
install (
TARGETS alac_decoder
RUNTIME DESTINATION tools/alac-decoder
)
endif()
if(NOT DISABLE_INSTALL_HEADERS)
install(FILES ${HEADERS} DESTINATION include/alac_decoder)
endif()

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@ -0,0 +1,3 @@
Source: alac-decoder
Version: 0.2
Description: ALAC C implementation of a decoder, written from reverse engineering the file format

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@ -0,0 +1,11 @@
#include "decomp.h"
#include <stdint.h>
int set_endian()
{
uint32_t integer = 0x000000aa;
unsigned char *p = (unsigned char*)&integer;
if (p[0] == 0xaa) return 0;
else return 1;
}

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@ -0,0 +1,30 @@
include(vcpkg_common_functions)
set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/alac_decoder)
vcpkg_download_distfile(ARCHIVE
URLS "https://distfiles.macports.org/alac_decoder/alac_decoder-0.2.0.tgz"
FILENAME "alac_decoder-0.2.0.tgz"
SHA512 4b37d4fe37681bfccaa4a27fbaf11eb2a1fba5f14e77d219a6d9814ff44d1168534d05eb19443dd2fd11e6fcdf4da3a22e3f3c79314cb7a6767c152351b13e29
)
vcpkg_extract_source_archive(${ARCHIVE})
file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
file(COPY ${CMAKE_CURRENT_LIST_DIR}/decomp.c DESTINATION ${SOURCE_PATH})
vcpkg_apply_patches(
SOURCE_PATH ${SOURCE_PATH}
PATCHES
${CMAKE_CURRENT_LIST_DIR}/remove_stdint_headers.patch
)
vcpkg_configure_cmake(
SOURCE_PATH ${SOURCE_PATH}
PREFER_NINJA
OPTIONS_DEBUG -DDISABLE_INSTALL_HEADERS=ON -DDISABLE_INSTALL_TOOLS=ON
)
vcpkg_install_cmake()
vcpkg_copy_pdbs()
vcpkg_copy_tool_dependencies(${CURRENT_PACKAGES_DIR}/tools/alac-decoder)
file(INSTALL ${SOURCE_PATH}/README DESTINATION ${CURRENT_PACKAGES_DIR}/share/alac-decoder RENAME copyright)

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@ -0,0 +1,193 @@
diff --git a/alac.c b/alac.c
index 469000d..c6fe479 100644
--- a/alac.c
+++ b/alac.c
@@ -33,11 +33,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+#include <stdint.h>
#include "decomp.h"
@@ -54,7 +50,7 @@
struct {signed int x:24;} se_struct_24;
#define SignExtend24(val) (se_struct_24.x = val)
-extern int host_bigendian;
+#define host_bigendian set_endian()
struct alac_file
{
diff --git a/decomp.h b/decomp.h
index 23dbc52..679a320 100644
--- a/decomp.h
+++ b/decomp.h
@@ -8,6 +8,7 @@ void decode_frame(alac_file *alac,
unsigned char *inbuffer,
void *outbuffer, int *outputsize);
void alac_set_info(alac_file *alac, char *inputbuffer);
+int set_endian();
#endif /* __ALAC__DECOMP_H */
diff --git a/demux.c b/demux.c
index ae77a9d..9e858a9 100644
--- a/demux.c
+++ b/demux.c
@@ -33,11 +33,7 @@
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+#include <stdint.h>
#include "stream.h"
#include "demux.h"
diff --git a/demux.h b/demux.h
index 8447bf8..8874ba4 100644
--- a/demux.h
+++ b/demux.h
@@ -1,11 +1,8 @@
#ifndef DEMUX_H
#define DEMUX_H
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+
+#include <stdint.h>
#include "stream.h"
diff --git a/main.c b/main.c
index 7449ca1..dd58699 100644
--- a/main.c
+++ b/main.c
@@ -37,11 +37,7 @@
#include <stdlib.h>
#include <errno.h>
#include <string.h>
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+#include <stdint.h>
#include "demux.h"
#include "decomp.h"
@@ -267,19 +263,7 @@ static void setup_environment(int argc, char **argv)
}
}
-/* this could quite easily be done at compile time,
- * however I don't want to have to bother with all the
- * various possible #define's for endianness, worrying about
- * different compilers etc. and I'm too lazy to use autoconf.
- */
-void set_endian()
-{
- uint32_t integer = 0x000000aa;
- unsigned char *p = (unsigned char*)&integer;
- if (p[0] == 0xaa) host_bigendian = 0;
- else host_bigendian = 1;
-}
int main(int argc, char **argv)
{
@@ -288,7 +272,7 @@ int main(int argc, char **argv)
memset(&demux_res, 0, sizeof(demux_res));
- set_endian();
+ host_bigendian = set_endian();
setup_environment(argc, argv);
diff --git a/stream.c b/stream.c
index 565db54..56727a0 100644
--- a/stream.c
+++ b/stream.c
@@ -33,13 +33,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+#include <stdint.h>
#include "stream.h"
+#include "decomp.h"
#define _Swap32(v) do { \
v = (((v) & 0x000000FF) << 0x18) | \
@@ -51,7 +48,7 @@
v = (((v) & 0x00FF) << 0x08) | \
(((v) & 0xFF00) >> 0x08); } while (0)
-extern int host_bigendian;
+#define host_bigendian set_endian()
struct stream_tTAG {
FILE *f;
diff --git a/stream.h b/stream.h
index 18d6aa0..ff6325e 100644
--- a/stream.h
+++ b/stream.h
@@ -3,11 +3,8 @@
/* stream.h */
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+#include <stdint.h>
+
typedef struct stream_tTAG stream_t;
diff --git a/wavwriter.c b/wavwriter.c
index fd19502..ce941c7 100644
--- a/wavwriter.c
+++ b/wavwriter.c
@@ -32,11 +32,8 @@
#include <stdio.h>
#include <stdlib.h>
-#ifdef _WIN32
- #include "stdint_win.h"
-#else
- #include <stdint.h>
-#endif
+#include <stdint.h>
+
#ifndef MAKEFOURCC
#define MAKEFOURCC(ch0, ch1, ch2, ch3) ( \
@@ -56,7 +53,7 @@
v = (((v) & 0x00FF) << 0x08) | \
(((v) & 0xFF00) >> 0x08); } while (0)
-extern int host_bigendian;
+#define host_bigendian set_endian()
static void write_uint32(FILE *f, uint32_t v, int bigendian)
{