Initial community commit

1 files changed, 74 insertions, 0 deletions

diff --git a/Src/vp8x/nsv_vp8_decoder.cpp b/Src/vp8x/nsv_vp8_decoder.cpp
new file mode 100644
index 00000000..a7513bef
--- /dev/null
+++ b/Src/vp8x/nsv_vp8_decoder.cpp
@@ -0,0 +1,74 @@
+#include "api.h"
+#include "nsv_vp8_decoder.h"
+#include "../nsv/nsvlib.h"
+#include <new>
+
+IVideoDecoder *NSVFactory::CreateVideoDecoder(int w, int h, double framerate, unsigned int fmt, int *flip)
+{
+	if (fmt == NSV_MAKETYPE('V','P','8','0')) 
+	{
+		*flip=1;
+		void *mem = WASABI_API_MEMMGR->sysMalloc(sizeof(VP8_Decoder));
+		VP8_Decoder *dec = new (mem) VP8_Decoder(w,h);
+		return dec;
+	}
+	return NULL;
+}
+
+#define CBCLASS NSVFactory
+START_DISPATCH;
+CB(SVC_NSVFACTORY_CREATEVIDEODECODER, CreateVideoDecoder)
+END_DISPATCH;
+#undef CBCLASS
+
+
+VP8_Decoder::VP8_Decoder(int w, int h)
+{
+	vpx_codec_dec_init(&decoder, &vpx_codec_vp8_dx_algo, NULL, 0);
+}
+
+
+VP8_Decoder::~VP8_Decoder()
+{
+  vpx_codec_destroy(&decoder);
+}
+
+int VP8_Decoder::decode(int need_kf, 
+        void *in, int in_len, 
+        void **out, // out is set to a pointer to data
+        unsigned int *out_type, // 'Y','V','1','2' is currently defined
+        int *is_kf)
+{
+  unsigned char *data=(unsigned char *)in;
+
+	if (in_len)
+	{
+		vpx_codec_decode(&decoder, (const uint8_t *)in, in_len, 0, 0);
+
+		vpx_codec_stream_info_t stream_info;
+		stream_info.sz = sizeof(stream_info);
+		if (vpx_codec_get_stream_info(&decoder, &stream_info) == VPX_CODEC_OK)
+		{
+			*is_kf = stream_info.is_kf;
+			if (need_kf && !stream_info.is_kf)
+				return 0;
+		}
+	}
+
+  *out_type=NSV_MAKETYPE('Y','V','1','2');
+  
+	vpx_codec_iter_t frame_iterator = 0;
+	vpx_image_t *image = vpx_codec_get_frame(&decoder, &frame_iterator);
+	if (image)
+	{
+		planes.y.baseAddr = image->planes[0];
+		planes.y.rowBytes = image->stride[0];
+		planes.u.baseAddr = image->planes[1];
+		planes.u.rowBytes = image->stride[1];
+		planes.v.baseAddr = image->planes[2];
+		planes.v.rowBytes = image->stride[2];
+		*out = &planes;
+		return 0;
+	}
+  return 0;
+}