libbpg-0.9.6

x265/source/common/common.cpp

@@ -0,0 +1,219 @@
+/*****************************************************************************
+ * Copyright (C) 2013 x265 project
+ *
+ * Authors: Deepthi Nandakumar <deepthi@multicorewareinc.com>
+ *
+ * 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 "slice.h"
+#include "threading.h"
+#include "x265.h"
+
+#if _WIN32
+#include <sys/types.h>
+#include <sys/timeb.h>
+#else
+#include <sys/time.h>
+#endif
+
+namespace X265_NS {
+
+#if CHECKED_BUILD || _DEBUG
+int g_checkFailures;
+#endif
+
+int64_t x265_mdate(void)
+{
+#if _WIN32
+    struct timeb tb;
+    ftime(&tb);
+    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
+#else
+    struct timeval tv_date;
+    gettimeofday(&tv_date, NULL);
+    return (int64_t)tv_date.tv_sec * 1000000 + (int64_t)tv_date.tv_usec;
+#endif
+}
+
+#define X265_ALIGNBYTES 32
+
+#if _WIN32
+#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
+#define _aligned_malloc __mingw_aligned_malloc
+#define _aligned_free   __mingw_aligned_free
+#include "malloc.h"
+#endif
+
+void *x265_malloc(size_t size)
+{
+    return _aligned_malloc(size, X265_ALIGNBYTES);
+}
+
+void x265_free(void *ptr)
+{
+    if (ptr) _aligned_free(ptr);
+}
+
+#else // if _WIN32
+void *x265_malloc(size_t size)
+{
+    void *ptr;
+
+    if (posix_memalign((void**)&ptr, X265_ALIGNBYTES, size) == 0)
+        return ptr;
+    else
+        return NULL;
+}
+
+void x265_free(void *ptr)
+{
+    if (ptr) free(ptr);
+}
+
+#endif // if _WIN32
+
+/* Not a general-purpose function; multiplies input by -1/6 to convert
+ * qp to qscale. */
+int x265_exp2fix8(double x)
+{
+    int i = (int)(x * (-64.f / 6.f) + 512.5f);
+
+    if (i < 0) return 0;
+    if (i > 1023) return 0xffff;
+    return (x265_exp2_lut[i & 63] + 256) << (i >> 6) >> 8;
+}
+
+void general_log(const x265_param* param, const char* caller, int level, const char* fmt, ...)
+{
+    if (param && level > param->logLevel)
+        return;
+    const int bufferSize = 4096;
+    char buffer[bufferSize];
+    int p = 0;
+    const char* log_level;
+    switch (level)
+    {
+    case X265_LOG_ERROR:
+        log_level = "error";
+        break;
+    case X265_LOG_WARNING:
+        log_level = "warning";
+        break;
+    case X265_LOG_INFO:
+        log_level = "info";
+        break;
+    case X265_LOG_DEBUG:
+        log_level = "debug";
+        break;
+    case X265_LOG_FULL:
+        log_level = "full";
+        break;
+    default:
+        log_level = "unknown";
+        break;
+    }
+
+    if (caller)
+        p += sprintf(buffer, "%-4s [%s]: ", caller, log_level);
+    va_list arg;
+    va_start(arg, fmt);
+    vsnprintf(buffer + p, bufferSize - p, fmt, arg);
+    va_end(arg);
+    fputs(buffer, stderr);
+}
+
+double x265_ssim2dB(double ssim)
+{
+    double inv_ssim = 1 - ssim;
+
+    if (inv_ssim <= 0.0000000001) /* Max 100dB */
+        return 100;
+
+    return -10.0 * log10(inv_ssim);
+}
+
+/* The qscale - qp conversion is specified in the standards.
+ * Approx qscale increases by 12%  with every qp increment */
+double x265_qScale2qp(double qScale)
+{
+    return 12.0 + 6.0 * (double)X265_LOG2(qScale / 0.85);
+}
+
+double x265_qp2qScale(double qp)
+{
+    return 0.85 * pow(2.0, (qp - 12.0) / 6.0);
+}
+
+uint32_t x265_picturePlaneSize(int csp, int width, int height, int plane)
+{
+    uint32_t size = (uint32_t)(width >> x265_cli_csps[csp].width[plane]) * (height >> x265_cli_csps[csp].height[plane]);
+
+    return size;
+}
+
+char* x265_slurp_file(const char *filename)
+{
+    if (!filename)
+        return NULL;
+
+    int bError = 0;
+    size_t fSize;
+    char *buf = NULL;
+
+    FILE *fh = fopen(filename, "rb");
+    if (!fh)
+    {
+        x265_log(NULL, X265_LOG_ERROR, "unable to open file %s\n", filename);
+        return NULL;
+    }
+
+    bError |= fseek(fh, 0, SEEK_END) < 0;
+    bError |= (fSize = ftell(fh)) <= 0;
+    bError |= fseek(fh, 0, SEEK_SET) < 0;
+    if (bError)
+        goto error;
+
+    buf = X265_MALLOC(char, fSize + 2);
+    if (!buf)
+    {
+        x265_log(NULL, X265_LOG_ERROR, "unable to allocate memory\n");
+        goto error;
+    }
+
+    bError |= fread(buf, 1, fSize, fh) != fSize;
+    if (buf[fSize - 1] != '\n')
+        buf[fSize++] = '\n';
+    buf[fSize] = 0;
+    fclose(fh);
+
+    if (bError)
+    {
+        x265_log(NULL, X265_LOG_ERROR, "unable to read the file\n");
+        X265_FREE(buf);
+        buf = NULL;
+    }
+    return buf;
+
+error:
+    fclose(fh);
+    return NULL;
+}
+
+}