Add an example program that streams audio using ffmpeg

1 files changed, 95 insertions, 0 deletions

diff --git a/examples/alhelpers.h b/examples/alhelpers.h
new file mode 100644
index 00000000..5559ea6f
--- /dev/null
+++ b/examples/alhelpers.h
@@ -0,0 +1,95 @@
+#ifndef ALHELPERS_H
+#define ALHELPERS_H
+
+#ifndef _WIN32
+#include <unistd.h>
+#define Sleep(x) usleep((x)*1000)
+#else
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#ifndef AL_SOFT_buffer_samples
+#define AL_SOFT_buffer_samples 1
+/* Sample types */
+#define AL_BYTE                                  0x1400
+#define AL_UNSIGNED_BYTE                         0x1401
+#define AL_SHORT                                 0x1402
+#define AL_UNSIGNED_SHORT                        0x1403
+#define AL_INT                                   0x1404
+#define AL_UNSIGNED_INT                          0x1405
+#define AL_FLOAT                                 0x1406
+#define AL_DOUBLE                                0x1407
+#define AL_BYTE3                                 0x1408
+#define AL_UNSIGNED_BYTE3                        0x1409
+
+/* Channel configurations */
+#define AL_MONO                                  0x1500
+#define AL_STEREO                                0x1501
+#define AL_REAR                                  0x1502
+#define AL_QUAD                                  0x1503
+#define AL_5POINT1                               0x1504
+#define AL_6POINT1                               0x1505
+#define AL_7POINT1                               0x1506
+
+/* Storage formats */
+#define AL_MONO8                                 0x1100
+#define AL_MONO16                                0x1101
+#define AL_MONO32F                               0x10010
+#define AL_STEREO8                               0x1102
+#define AL_STEREO16                              0x1103
+#define AL_STEREO32F                             0x10011
+#define AL_QUAD8                                 0x1204
+#define AL_QUAD16                                0x1205
+#define AL_QUAD32F                               0x1206
+#define AL_REAR8                                 0x1207
+#define AL_REAR16                                0x1208
+#define AL_REAR32F                               0x1209
+#define AL_5POINT1_8                             0x120A
+#define AL_5POINT1_16                            0x120B
+#define AL_5POINT1_32F                           0x120C
+#define AL_6POINT1_8                             0x120D
+#define AL_6POINT1_16                            0x120E
+#define AL_6POINT1_32F                           0x120F
+#define AL_7POINT1_8                             0x1210
+#define AL_7POINT1_16                            0x1211
+#define AL_7POINT1_32F                           0x1212
+
+/* Buffer attributes */
+#define AL_INTERNAL_FORMAT                       0x2008
+#define AL_BYTE_LENGTH                           0x2009
+#define AL_SAMPLE_LENGTH                         0x200A
+#define AL_SEC_LENGTH                            0x200B
+
+typedef void (AL_APIENTRY*LPALBUFFERSAMPLESSOFT)(ALuint,ALuint,ALenum,ALsizei,ALenum,ALenum,const ALvoid*);
+typedef void (AL_APIENTRY*LPALBUFFERSUBSAMPLESSOFT)(ALuint,ALsizei,ALsizei,ALenum,ALenum,const ALvoid*);
+typedef void (AL_APIENTRY*LPALGETBUFFERSAMPLESSOFT)(ALuint,ALsizei,ALsizei,ALenum,ALenum,ALvoid*);
+typedef ALboolean (AL_APIENTRY*LPALISBUFFERFORMATSUPPORTEDSOFT)(ALenum);
+#endif
+
+
+/* Some helper functions to get the name from the channel and type enums. */
+const char *ChannelsName(ALenum chans);
+const char *TypeName(ALenum type);
+
+/* Helpers to convert frame counts and byte lengths. */
+ALsizei FramesToBytes(ALsizei size, ALenum channels, ALenum type);
+ALsizei BytesToFrames(ALsizei size, ALenum channels, ALenum type);
+
+/* Retrieves a compatible buffer format given the channel configuration and
+ * sample type. Returns 0 if no supported format can be found. */
+ALenum GetFormat(ALenum channels, ALenum type);
+
+/* Easy device init/deinit functions. InitAL returns 0 on success. */
+int InitAL(void);
+void CloseAL(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* ALHELPERS_H */