From 20d28e80a5c861a9d5f449ea911ab75b4f37ad0d Mon Sep 17 00:00:00 2001
From: Jef <jef@targetspot.com>
Date: Tue, 24 Sep 2024 14:54:57 +0200
Subject: Initial community commit

---
 Src/h264/nsv_h264_decoder.cpp | 77 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 Src/h264/nsv_h264_decoder.cpp

(limited to 'Src/h264/nsv_h264_decoder.cpp')

diff --git a/Src/h264/nsv_h264_decoder.cpp b/Src/h264/nsv_h264_decoder.cpp
new file mode 100644
index 00000000..3fa781ff
--- /dev/null
+++ b/Src/h264/nsv_h264_decoder.cpp
@@ -0,0 +1,77 @@
+#include "nsv_h264_decoder.h"
+#include "../nsv/nsvlib.h"
+#include "../nsv/dec_if.h"
+#include <assert.h>
+#include <Mferror.h>
+
+H264_Decoder::H264_Decoder()
+{
+	vidbufdec=0;
+	last_pic = 0;
+	decoder.Open();
+}
+
+H264_Decoder::~H264_Decoder()
+{	
+	for (size_t i=0;i<buffered_frames.size();i++) {
+		nullsoft_h264_frame_data frame_data = buffered_frames[i];
+		decoder.FreeFrame((YV12_PLANES *)frame_data.data, frame_data.decoder_data);
+	}
+
+	decoder.FreeFrame(vidbufdec, last_pic);
+}
+
+int H264_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)
+{
+	*out_type=NSV_MAKETYPE('Y','V','1','2');
+
+	if (last_pic)
+	{
+		decoder.FreeFrame(vidbufdec, last_pic);
+		vidbufdec=0;
+		last_pic=0;
+	}
+
+	if (_in_len) {
+		for (;;) {
+			HRESULT hr = decoder.FeedRaw(_in, _in_len, 0);
+			if (hr == MF_E_NOTACCEPTING) {
+				nullsoft_h264_frame_data frame_data;
+				if (FAILED(decoder.GetFrame((YV12_PLANES **)&frame_data.data, &frame_data.decoder_data, &frame_data.local_timestamp))) {
+					continue;
+				}
+				buffered_frames.push_back(frame_data);
+			} else if (FAILED(hr)) {
+				return -1;
+			} else {
+				break;
+			}
+		}
+	} else {
+		decoder.Drain();
+	}
+
+	if (SUCCEEDED(decoder.GetFrame(&vidbufdec, &last_pic, 0))) {
+		*out = vidbufdec;
+		*is_kf = 1;
+	} else {
+		*out = 0;
+	}
+
+	return 0;
+}
+
+void H264_Decoder::flush()
+{
+	for ( size_t i = 0; i < buffered_frames.size(); i++ )
+	{
+		nullsoft_h264_frame_data frame_data = buffered_frames[ i ];
+		decoder.FreeFrame( (YV12_PLANES *)frame_data.data, frame_data.decoder_data );
+	}
+
+	decoder.Flush();
+}
-- 
cgit