diff options
Diffstat (limited to 'cmake/FindG729.cmake')
| -rw-r--r-- | cmake/FindG729.cmake | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/cmake/FindG729.cmake b/cmake/FindG729.cmake index 4a30ba0..1fbfeeb 100644 --- a/cmake/FindG729.cmake +++ b/cmake/FindG729.cmake @@ -1,14 +1,50 @@ +INCLUDE(CMakePushCheckState) +INCLUDE(CheckCSourceCompiles) + FIND_PATH(G729_INCLUDE_DIR bcg729/decoder.h) FIND_LIBRARY(G729_LIBRARY NAMES bcg729) IF(G729_INCLUDE_DIR AND G729_LIBRARY) SET(G729_FOUND TRUE) + + # The bcg729 API was changed in 1.0.2 to add support for G.729 Annex B. + # This checks whether we are dealing with the old or new API. + CMAKE_PUSH_CHECK_STATE() + SET(CMAKE_REQUIRED_INCLUDES "${INCLUDE_DIRECTORIES}" "${G729_INCLUDE_DIR}") + SET(CMAKE_REQUIRED_LIBRARIES "${G729_LIBRARY}") + SET(CMAKE_REQUIRED_QUIET TRUE) + # Try to compile something using the old (pre-1.0.2) API. + # + # We cannot do it the other way around, as initBcg729EncoderChannel() + # did not have a prototype before 1.0.2, thus compilation would not fail + # when passing it an extra argument. + CHECK_C_SOURCE_COMPILES(" + #include <bcg729/encoder.h> + + int main() { + /* This function requires an argument since 1.0.2 */ + initBcg729EncoderChannel(); + return 0; + } + " G729_OLD_API) + CMAKE_POP_CHECK_STATE() + + IF (G729_OLD_API) + SET(G729_ANNEX_B FALSE) + ELSE (G729_OLD_API) + SET(G729_ANNEX_B TRUE) + ENDIF (G729_OLD_API) ENDIF(G729_INCLUDE_DIR AND G729_LIBRARY) IF(G729_FOUND) IF (NOT G729_FIND_QUIETLY) MESSAGE(STATUS "Found bcg729 includes: ${G729_INCLUDE_DIR}/bcg729/decoder.h") MESSAGE(STATUS "Found bcg729 library: ${G729_LIBRARY}") + IF (G729_ANNEX_B) + MESSAGE(STATUS "bcg729 supports Annex B; using the new (1.0.2) API") + ELSE (G729_ANNEX_B) + MESSAGE(STATUS "bcg729 does not support Annex B; using the old (pre-1.0.2) API") + ENDIF (G729_ANNEX_B) ENDIF (NOT G729_FIND_QUIETLY) ELSE(G729_FOUND) IF (G729_FIND_REQUIRED) |