libbpg-0.9.6

2015-10-27 11:46:00 +01:00 · 2015-10-27 11:46:00 +01:00 · 35a8402710
commit 35a8402710
parent 3035b41edf
248 changed files with 232891 additions and 100 deletions
--- a/x265/source/output/y4m.cpp
+++ b/x265/source/output/y4m.cpp
@ -0,0 +1,109 @@
+/*****************************************************************************
+ * Copyright (C) 2013 x265 project
+ *
+ * Authors: Steve Borho <steve@borho.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
+ *
+ * This program is also available under a commercial proprietary license.
+ * For more information, contact us at license @ x265.com.
+ *****************************************************************************/
+
+#include "common.h"
+#include "output.h"
+#include "y4m.h"
+
+using namespace X265_NS;
+using namespace std;
+
+Y4MOutput::Y4MOutput(const char *filename, int w, int h, uint32_t fpsNum, uint32_t fpsDenom, int csp)
+    : width(w)
+    , height(h)
+    , colorSpace(csp)
+    , frameSize(0)
+{
+    ofs.open(filename, ios::binary | ios::out);
+    buf = new char[width];
+
+    const char *cf = (csp >= X265_CSP_I444) ? "444" : (csp >= X265_CSP_I422) ? "422" : "420";
+
+    if (ofs)
+    {
+        ofs << "YUV4MPEG2 W" << width << " H" << height << " F" << fpsNum << ":" << fpsDenom << " Ip" << " C" << cf << "\n";
+        header = ofs.tellp();
+    }
+
+    for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
+        frameSize += (uint32_t)((width >> x265_cli_csps[colorSpace].width[i]) * (height >> x265_cli_csps[colorSpace].height[i]));
+}
+
+Y4MOutput::~Y4MOutput()
+{
+    ofs.close();
+    delete [] buf;
+}
+
+bool Y4MOutput::writePicture(const x265_picture& pic)
+{
+    std::ofstream::pos_type outPicPos = header;
+    outPicPos += (uint64_t)pic.poc * (6 + frameSize);
+    ofs.seekp(outPicPos);
+    ofs << "FRAME\n";
+
+#if HIGH_BIT_DEPTH
+    if (pic.bitDepth > 8 && pic.poc == 0)
+        x265_log(NULL, X265_LOG_WARNING, "y4m: down-shifting reconstructed pixels to 8 bits\n");
+#else
+    if (pic.bitDepth > 8 && pic.poc == 0)
+        x265_log(NULL, X265_LOG_WARNING, "y4m: forcing reconstructed pixels to 8 bits\n");
+#endif
+
+    X265_CHECK(pic.colorSpace == colorSpace, "invalid color space\n");
+
+#if HIGH_BIT_DEPTH
+
+    // encoder gave us short pixels, downshift, then write
+    X265_CHECK(pic.bitDepth > 8, "invalid bit depth\n");
+    int shift = pic.bitDepth - 8;
+    for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
+    {
+        uint16_t *src = (uint16_t*)pic.planes[i];
+        for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
+        {
+            for (int w = 0; w < width >> x265_cli_csps[colorSpace].width[i]; w++)
+                buf[w] = (char)(src[w] >> shift);
+
+            ofs.write(buf, width >> x265_cli_csps[colorSpace].width[i]);
+            src += pic.stride[i] / sizeof(*src);
+        }
+    }
+
+#else // if HIGH_BIT_DEPTH
+
+    X265_CHECK(pic.bitDepth == 8, "invalid bit depth\n");
+    for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
+    {
+        char *src = (char*)pic.planes[i];
+        for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
+        {
+            ofs.write(src, width >> x265_cli_csps[colorSpace].width[i]);
+            src += pic.stride[i] / sizeof(*src);
+        }
+    }
+
+#endif // if HIGH_BIT_DEPTH
+
+    return true;
+}