added video library (using ffmpeg)

.gitignore

@@ -33,3 +33,4 @@ ReleaseStatic
 /src/hl
 /src/haxe
 /src/Makefile
+/include/ffmpeg

libs/video/video.c

@@ -0,0 +1,114 @@
+#define HL_NAME(n) video_##n
+#include <hl.h>
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libswscale/swscale.h>
+
+typedef struct {
+	void *finalizer;
+	AVFormatContext *input;
+	AVCodecContext *codec;
+	AVFrame *frame;
+	int videoStream;
+	struct SwsContext *scale;
+} hl_video;
+
+static void hl_video_free( hl_video *v ) {
+	avformat_close_input(&v->input);
+	avcodec_free_context(&v->codec);
+	av_frame_free(&v->frame);
+	if( v->scale ) {
+		sws_freeContext(v->scale);
+		v->scale = NULL;
+	}
+}
+
+HL_PRIM void HL_NAME(video_init)() {
+	av_register_all();
+}
+
+static bool hl_video_init( hl_video *v, const char *file ) {
+	AVCodec *codec;
+	AVCodecContext *codecOrig;
+	int i;
+	if( avformat_open_input(&v->input, file, NULL, NULL) )
+		return false;
+	if( avformat_find_stream_info(v->input, NULL) < 0 )
+		return false;
+	v->videoStream = -1;
+	for(i=0;i<(int)v->input->nb_streams; i++)
+		if( v->input->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO ) {
+		    v->videoStream = i;
+			break;
+		}
+	if( v->videoStream < 0 )
+		return false;
+	codecOrig = v->input->streams[v->videoStream]->codec;
+	codec = avcodec_find_decoder(codecOrig->codec_id);
+	if( codec == NULL )
+		return false;
+	v->codec = avcodec_alloc_context3(codec);
+	avcodec_copy_context(v->codec, codecOrig);
+	if( avcodec_open2(v->codec, codec,NULL) < 0 )
+		return false;
+	v->frame = av_frame_alloc();
+	v->scale = sws_getContext(v->codec->width,v->codec->height, v->codec->pix_fmt, v->codec->width, v->codec->height, AV_PIX_FMT_RGBA, SWS_BILINEAR, NULL, NULL, NULL);
+	return true;
+}
+
+HL_PRIM hl_video *HL_NAME(video_open)( const char *file ) {
+	hl_video *v;
+	v = hl_gc_alloc_finalizer(sizeof(hl_video));
+	memset(v,0,sizeof(hl_video));
+	v->finalizer = hl_video_free;
+	if( !hl_video_init(v,file) ) {
+		hl_video_free(v);
+		return NULL;
+	}
+	return v;
+}
+
+HL_PRIM void HL_NAME(video_get_size)( hl_video *v, int *width, int *height ) {
+	*width = v->codec->width;
+	*height = v->codec->height;
+}
+
+HL_PRIM bool HL_NAME(video_decode_frame)( hl_video *v, vbyte *out, double *time ) {
+	AVPacket packet;
+	AVPicture i;
+	int frameFinished = 0;
+	while( !frameFinished ) {
+		if( av_read_frame(v->input, &packet) < 0 )
+			return false;
+		if( packet.stream_index == v->videoStream && avcodec_decode_video2(v->codec, v->frame, &frameFinished, &packet) < 0 ) {
+			av_free_packet(&packet);
+			return false;
+		}
+		av_free_packet(&packet);
+	}
+	// extract to output
+	if( out ) {
+		i.data[0] = out;
+		i.data[1] = out + 1;
+		i.data[2] = out + 2;
+		i.linesize[0] = v->codec->width * 4;
+		i.linesize[1] = v->codec->width * 4;
+		i.linesize[2] = v->codec->width * 4;
+		sws_scale(v->scale, v->frame->data, v->frame->linesize, 0, v->codec->height, i.data, i.linesize);
+	}
+	if( time )
+		*time = (double)av_frame_get_best_effort_timestamp(v->frame) * av_q2d(v->codec->pkt_timebase);
+	return true;
+}
+
+HL_PRIM void HL_NAME(video_close)( hl_video *v ) {
+	hl_video_free(v);
+}
+
+#define _VIDEO _ABSTRACT(hl_video)
+
+DEFINE_PRIM(_VOID, video_init, _NO_ARG);
+DEFINE_PRIM(_VIDEO, video_open, _BYTES);
+DEFINE_PRIM(_VOID, video_get_size, _VIDEO _REF(_I32) _REF(_I32));
+DEFINE_PRIM(_BOOL, video_decode_frame, _VIDEO _BYTES _REF(_F64));
+DEFINE_PRIM(_VOID, video_close, _VIDEO);

libs/video/video.sln

@@ -0,0 +1,34 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25123.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "video", "video.vcxproj", "{12049F27-EA26-4A33-ADF8-E542C4167C00}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+		ReleaseStatic|x64 = ReleaseStatic|x64
+		ReleaseStatic|x86 = ReleaseStatic|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Debug|x64.ActiveCfg = Debug|x64
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Debug|x64.Build.0 = Debug|x64
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Debug|x86.ActiveCfg = Debug|Win32
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Debug|x86.Build.0 = Debug|Win32
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Release|x64.ActiveCfg = Release|x64
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Release|x64.Build.0 = Release|x64
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Release|x86.ActiveCfg = Release|Win32
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.Release|x86.Build.0 = Release|Win32
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.ReleaseStatic|x64.ActiveCfg = ReleaseStatic|x64
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.ReleaseStatic|x64.Build.0 = ReleaseStatic|x64
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.ReleaseStatic|x86.ActiveCfg = ReleaseStatic|Win32
+		{12049F27-EA26-4A33-ADF8-E542C4167C00}.ReleaseStatic|x86.Build.0 = ReleaseStatic|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

libs/video/video.vcxproj

@@ -0,0 +1,246 @@
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+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+    <ProjectConfiguration Include="ReleaseStatic|x64">
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+    <ProjectConfiguration Include="Release|Win32">
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+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="video.c" />
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{12049F27-EA26-4A33-ADF8-E542C4167C00}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>video</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
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+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
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libs/video/video.vcxproj.filters

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="video.c" />
+  </ItemGroup>
+</Project>