Merge pull request #5 from WinampDesktop/community

Merge to main

1 files changed, 354 insertions, 0 deletions

diff --git a/Src/external_dependencies/libmp4v2/mp4util.cpp b/Src/external_dependencies/libmp4v2/mp4util.cpp
new file mode 100644
index 00000000..3214295d
--- /dev/null
+++ b/Src/external_dependencies/libmp4v2/mp4util.cpp
@@ -0,0 +1,354 @@
+/*
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ * 
+ * The Original Code is MPEG4IP.
+ * 
+ * The Initial Developer of the Original Code is Cisco Systems Inc.
+ * Portions created by Cisco Systems Inc. are
+ * Copyright (C) Cisco Systems Inc. 2001-2005.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ *		Dave Mackie		dmackie@cisco.com
+ *              Bill May                wmay@cisco.com
+ */
+
+#include "mp4common.h"
+
+void MP4Error::Print(FILE* pFile)
+{
+	fprintf(pFile, "MP4ERROR: ");
+	if (m_where) {
+		fprintf(pFile, "%s", m_where);
+	}
+	if (m_errstring) {
+		if (m_where) {
+			fprintf(pFile, ": ");
+		}
+		fprintf(pFile, "%s", m_errstring);
+	}
+	if (m_errno) {
+		if (m_where || m_errstring) {
+			fprintf(pFile, ": ");
+		}
+		fprintf(pFile, "%s", strerror(m_errno));
+	}
+	fprintf(pFile, "\n");
+}
+
+void MP4HexDump(
+	u_int8_t* pBytes, u_int32_t numBytes,
+	FILE* pFile, u_int8_t indent)
+{
+	if (pFile == NULL) {
+		pFile = stdout;
+	}
+	Indent(pFile, indent);
+	fprintf(pFile, "<%u bytes> ", numBytes);
+	for (u_int32_t i = 0; i < numBytes; i++) {
+		if ((i % 16) == 0 && numBytes > 16) {
+			fprintf(pFile, "\n");
+			Indent(pFile, indent);
+		}
+		fprintf(pFile, "%02x ", pBytes[i]);
+	}
+	fprintf(pFile, "\n");
+}
+
+bool MP4NameFirstMatches(const char* s1, const char* s2) 
+{
+	if (s1 == NULL || *s1 == '\0' || s2 == NULL || *s2 == '\0') {
+		return false;
+	}
+
+	if (*s2 == '*') {
+		return true;
+	}
+
+	while (*s1 != '\0') {
+		if (*s2 == '\0' || strchr("[.", *s2)) {
+			break;
+		}
+		if (tolower(*s1) != tolower(*s2)) {
+			return false;
+		}
+		s1++;
+		s2++;
+	}
+	return true;
+}
+
+bool MP4NameFirstIndex(const char* s, u_int32_t* pIndex)
+{
+	if (s == NULL) {
+		return false;
+	}
+
+	while (*s != '\0' && *s != '.') {
+		if (*s == '[') {
+			s++;
+			ASSERT(pIndex);
+			if (sscanf(s, "%u", pIndex) != 1) {
+				return false;
+			}
+			return true;
+		}
+		s++;
+	}
+	return false;
+}
+
+char* MP4NameFirst(const char *s)
+{
+	if (s == NULL) {
+		return NULL;
+	}
+
+	const char* end = s;
+
+	while (*end != '\0' && *end != '.') {
+		end++;
+	}
+
+	char* first = (char*)MP4Calloc((end - s) + 1);
+
+	if (first) {
+		strncpy(first, s, end - s);
+	}
+
+	return first;
+}
+
+const char* MP4NameAfterFirst(const char *s)
+{
+	if (s == NULL) {
+		return NULL;
+	}
+
+	while (*s != '\0') {
+		if (*s == '.') {
+			s++;
+			if (*s == '\0') {
+				return NULL;
+			}
+			return s;
+		}
+		s++;
+	}
+	return NULL;
+}
+
+char* MP4ToBase16(const u_int8_t* pData, u_int32_t dataSize)
+{
+	if (dataSize) {
+		ASSERT(pData);
+	}
+	uint size = 2 * dataSize + 1;
+	char* s = (char*)MP4Calloc(size);
+
+	u_int32_t i, j;
+	for (i = 0, j = 0; i < dataSize; i++) {
+		size -= snprintf(&s[j], size, "%02x", pData[i]);
+		j += 2;
+	}
+
+	return s;	/* N.B. caller is responsible for free'ing s */
+}
+
+char* MP4ToBase64(const u_int8_t* pData, u_int32_t dataSize)
+{
+  if (pData == NULL || dataSize == 0) return NULL;
+
+	static const char encoding[64] = {
+		'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
+		'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
+		'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
+		'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
+	};
+
+	char* s = (char*)MP4Calloc((((dataSize + 2) * 4) / 3) + 1);
+
+	const u_int8_t* src = pData;
+	if (pData == NULL) return NULL;
+	char* dest = s;
+	u_int32_t numGroups = dataSize / 3;
+
+	for (u_int32_t i = 0; i < numGroups; i++) {
+		*dest++ = encoding[src[0] >> 2];
+		*dest++ = encoding[((src[0] & 0x03) << 4) | (src[1] >> 4)];
+		*dest++ = encoding[((src[1] & 0x0F) << 2) | (src[2] >> 6)];
+		*dest++ = encoding[src[2] & 0x3F];
+		src += 3;
+	}
+
+	if (dataSize % 3 == 1) {
+		*dest++ = encoding[src[0] >> 2];
+		*dest++ = encoding[((src[0] & 0x03) << 4)];
+		*dest++ = '=';
+		*dest++ = '=';
+	} else if (dataSize % 3 == 2) {
+		*dest++ = encoding[src[0] >> 2];
+		*dest++ = encoding[((src[0] & 0x03) << 4) | (src[1] >> 4)];
+		*dest++ = encoding[((src[1] & 0x0F) << 2)];
+		*dest++ = '=';
+	}
+	*dest = '\0';
+	return s;	/* N.B. caller is responsible for free'ing s */
+}
+
+static bool convertBase64 (const char data, uint8_t *value)
+{
+  static const uint8_t decodingarr64[128] = {
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0x3e, 0xff, 0xff, 0xff, 0x3f,
+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+    0x3c, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+    0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
+    0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+    0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
+    0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
+    0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
+    0x31, 0x32, 0x33, 0xff, 0xff, 0xff, 0xff, 0xff,
+  };
+  uint8_t index = (uint8_t)data;
+  if ((index & 0x80) != 0) return false;
+
+  if (decodingarr64[index] == 0xff) return false;
+  *value = decodingarr64[index];
+  return true;
+}
+
+uint8_t *Base64ToBinary (const char *pData, uint32_t decodeSize, uint32_t *pDataSize)
+{
+  uint8_t *ret;
+  uint32_t size, ix, groups;
+  if (pData == NULL ||  decodeSize == 0 || pDataSize == NULL) 
+    return NULL;
+
+ if ((decodeSize % 4) != 0) {
+    // must be multiples of 4 characters
+    return NULL;
+  }
+  size = (decodeSize * 3) / 4;
+  groups = decodeSize / 4;
+  ret = (uint8_t *)MP4Calloc(size);
+  if (ret == NULL) return NULL;
+  for (ix = 0; ix < groups; ix++) {
+    uint8_t value[4];
+    for (uint8_t jx = 0; jx < 4; jx++) {
+      if (pData[jx] == '=') {
+	if (ix != (groups - 1)) {
+	  free(ret);
+	  return NULL;
+	}
+	size--;
+	value[jx] = 0;
+      } else if (convertBase64(pData[jx], &value[jx]) == false) {
+	free(ret);
+	return NULL;
+      }
+    }
+    ret[(ix * 3)] = value[0] << 2 | ((value[1] >> 4) & 0x3);
+    ret[(ix * 3) + 1] = (value[1] << 4) | (value[2] >> 2 & 0xf);
+    ret[(ix * 3) + 2] = ((value[2] & 0x3) << 6) | value[3];
+    pData += 4;
+  }
+  *pDataSize = size;
+  return ret;
+}
+
+// log2 of value, rounded up
+static u_int8_t ilog2(u_int64_t value)
+{
+	u_int64_t powerOf2 = 1;
+	for (u_int8_t i = 0; i < 64; i++) {
+		if (value <= powerOf2) {
+			return i;
+		}
+		powerOf2 <<= 1;
+	} 
+	return 64;
+}
+
+u_int64_t MP4ConvertTime(u_int64_t t, 
+	u_int32_t oldTimeScale, u_int32_t newTimeScale)
+{
+	// avoid float point exception
+	if (oldTimeScale == 0) {
+		throw new MP4Error("division by zero", "MP4ConvertTime");
+	}
+
+	if (oldTimeScale == newTimeScale) 
+		return t;
+
+	// check if we can safely use integer operations
+	if (ilog2(t) + ilog2(newTimeScale) <= 64) {
+		double d = ((double) t / (double) oldTimeScale) * (double) newTimeScale;
+		return (u_int64_t)d;
+	}
+
+	// final resort is to use floating point
+	//double d = (double)newTimeScale;
+	//d *= UINT64_TO_DOUBLE(t);
+	//d /= (double)oldTimeScale;	
+	//d += 0.5; // round up.
+	double d = (double)newTimeScale;
+	d /= (double)oldTimeScale;
+	d *= UINT64_TO_DOUBLE(t);
+	d += 0.5; // round up.
+	return (u_int64_t)d;
+}
+
+const char* MP4NormalizeTrackType (const char* type,
+				   uint32_t verbosity)
+{
+	if (!strcasecmp(type, "vide")
+	  || !strcasecmp(type, "video")
+	  || !strcasecmp(type, "mp4v")
+	  || !strcasecmp(type, "avc1")
+	  || !strcasecmp(type, "s263")	// 3GPP H.263
+	  || !strcasecmp(type, "encv")) {
+		return MP4_VIDEO_TRACK_TYPE;
+	}
+
+	if (!strcasecmp(type, "soun")
+	  || !strcasecmp(type, "sound")
+	  || !strcasecmp(type, "audio")
+	  || !strcasecmp(type, "enca") 
+	  || !strcasecmp(type, "samr")	// 3GPP AMR 
+	  || !strcasecmp(type, "sawb")	// 3GPP AMR/WB
+	  || !strcasecmp(type, "mp4a")) {
+		return MP4_AUDIO_TRACK_TYPE;
+	}
+
+	if (!strcasecmp(type, "sdsm")
+	  || !strcasecmp(type, "scene")
+	  || !strcasecmp(type, "bifs")) {
+		return MP4_SCENE_TRACK_TYPE;
+	}
+
+	if (!strcasecmp(type, "odsm")
+	  || !strcasecmp(type, "od")) {
+		return MP4_OD_TRACK_TYPE;
+	}
+	if (strcasecmp(type, "cntl") == 0) {
+	  return MP4_CNTL_TRACK_TYPE;
+	}
+	VERBOSE_WARNING(verbosity,
+			printf("Attempt to normalize %s did not match\n",
+			       type));
+	return type;
+}