Support Windows XP (Old FFmpeg and build fixes)

Signed-off-by: Andrew Opalach <andrew@akon.city>

3 files changed, 72 insertions, 0 deletions

diff --git a/src/render/momo/meson.build b/src/render/momo/meson.build
new file mode 100644
index 0000000..092293a
--- /dev/null
+++ b/src/render/momo/meson.build
@@ -0,0 +1,12 @@
+momo_src = ['momo.c']
+momo_deps = []
+momo_args = []
+
+libm = compiler.find_library('m', required: false)
+if libm.found()
+  momo_deps += [libm]
+endif
+linmath_h = subproject('linmath.h').get_variable('linmath_h')
+momo_deps += [linmath_h]
+
+momo = declare_dependency(sources: momo_src, dependencies: momo_deps, compile_args: momo_args)
diff --git a/src/render/momo/momo.c b/src/render/momo/momo.c
new file mode 100644
index 0000000..5239efd
--- /dev/null
+++ b/src/render/momo/momo.c
@@ -0,0 +1,35 @@
+#define AL_LOG_SECTION "momo"
+#include <al/log.h>
+
+#include "momo.h"
+
+bool MOMO_Init(MOMO_Renderer *mmr,
+#ifdef STELA_API_OPENGL
+    bool (*MakeCurrent)(void *),
+    void (*ReleaseCurrent)(void *),
+    void (*SwapBuffers)(void *),
+#endif
+    void *Private)
+{
+    mmr->Private = Private;
+#ifdef STELA_API_OPENGL
+    mmr->GL.MakeCurrent = MakeCurrent;
+    mmr->GL.ReleaseCurrent = ReleaseCurrent;
+    mmr->GL.SwapBuffers = SwapBuffers;
+    mmr->GL.MakeCurrent(mmr->Private);
+    const char *gl_version = (const char *)glGetString(GL_VERSION);
+    if (gl_version) {
+        log_info("GL context version: %s.", gl_version);
+    } else {
+        log_warn("Somehow failed to retrive GL_VERSION.");
+    }
+#endif
+    return true;
+}
+
+void MOMO_Render(MOMO_Renderer *mmr)
+{
+#ifdef STELA_API_OPENGL
+    mmr->GL.SwapBuffers(mmr->Private);
+#endif
+}
diff --git a/src/render/momo/momo.h b/src/render/momo/momo.h
new file mode 100644
index 0000000..76686ba
--- /dev/null
+++ b/src/render/momo/momo.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <al/types.h>
+
+#ifdef STELA_API_OPENGL
+#include <stl/gl.h>
+#endif
+
+typedef struct {
+    struct {
+        bool (*MakeCurrent)(void *);
+        void (*ReleaseCurrent)(void *);
+        void (*SwapBuffers)(void *);
+    } GL;
+    void *Private;
+} MOMO_Renderer;
+
+bool MOMO_Init(MOMO_Renderer *mmr,
+#ifdef STELA_API_OPENGL
+    bool (*MakeCurrent)(void *),
+    void (*ReleaseCurrent)(void *),
+    void (*SwapBuffers)(void *),
+#endif
+    void *Private);
+void MOMO_Render(MOMO_Renderer *mmr);