Add play .opus audio files support (#2488)

Author: halx99

3rdparty/CMakeLists.txt

@@ -413,9 +413,21 @@ if (AX_ENABLE_AUDIO)
         endif()
     endif()
 
-
-    # The ogg decoder
+    # The ogg contains vorbis & opus(optional) decoders
     ax_add_3rd(ogg)
+    
+    # opus
+    if(AX_ENABLE_OPUS)
+        _1kfetch(opus)
+        ax_add_3rd(${opus_SOURCE_DIR} NO_LINK TARGETS opus OPTIONS
+            "OPUS_INSTALL_PKG_CONFIG_MODULE OFF"
+            "OPUS_INSTALL_CMAKE_CONFIG_MODULE OFF"
+            "OPUS_BUILD_PROGRAMS OFF"
+            "OPUS_BUILD_TESTING OFF"
+            "OPUS_CUSTOM_MODES OFF"
+        )
+        target_link_libraries(ogg opus)
+    endif()
 endif()
 
 if(WINDOWS OR LINUX OR ANDROID OR WASM)

3rdparty/README.md

@@ -162,12 +162,17 @@
 - Version: 1.9.3
 - License: Apache-2.0
 
-## ogg & vorbis
+## ogg
 - ogg
   - [![Upstream](https://img.shields.io/github/v/release/xiph/ogg?label=Upstream)](https://github.com/xiph/ogg)
   - Version: 1.3.5
   - License: BSD-3-Clause
 
+- opus
+  - [![Upstream](https://img.shields.io/github/v/release/xiph/opus?label=Upstream)](https://github.com/xiph/opus)
+  - Version: 1.5.2
+  - License: BSD-3-Clause
+
 - vorbis
   - [![Upstream](https://img.shields.io/github/v/release/xiph/vorbis?label=Upstream)](https://github.com/xiph/vorbis)
   - Version: 1.3.7-83a82dd (1569)

3rdparty/ogg/CMakeLists.txt

@@ -7,6 +7,9 @@ project(${target_name})
 set(${target_name}_src
   src/ogg/bitwise.c
   src/ogg/framing.c
+)
+
+list(APPEND ${target_name}_src
   src/vorbis/analysis.c
   src/vorbis/bitrate.c
   src/vorbis/block.c
@@ -31,11 +34,26 @@ set(${target_name}_src
   src/vorbis/window.c
 )
 
+if(AX_ENABLE_OPUS)
+  list(APPEND ${target_name}_src
+    src/opus/info.c
+    src/opus/internal.c
+    src/opus/opusfile.c
+    src/opus/stream.c
+  )
+endif()
+
 add_library(${target_name} STATIC
   ${${target_name}_src}
 )
 
 target_include_directories(${target_name}
   PUBLIC "${CMAKE_CURRENT_LIST_DIR}/include"
+  PRIVATE "${CMAKE_CURRENT_LIST_DIR}/include/opus"
   PRIVATE "${CMAKE_CURRENT_LIST_DIR}/src/vorbis"
+  PRIVATE "${CMAKE_CURRENT_LIST_DIR}/src/opus"
 )
+
+if(AX_ENABLE_OPUS)
+  set_target_properties(${target_name} PROPERTIES INTERFACE_COMPILE_DEFINITIONS AX_ENABLE_OPUS=1)
+endif()