Upload Modules

ngx_http_flv_module/hls/ngx_rtmp_mpegts_crc.h

@@ -0,0 +1,85 @@
+/**
+ * \file crc.h
+ * Functions and types for CRC checks.
+ *
+ * Generated on Thu May  5 15:32:22 2016,
+ * by pycrc v0.9, https://pycrc.org
+ * using the configuration:
+ *    Width         = 32
+ *    Poly          = 0x04c11db7
+ *    Xor_In        = 0xffffffff
+ *    ReflectIn     = False
+ *    Xor_Out       = 0x00000000
+ *    ReflectOut    = False
+ *    Algorithm     = table-driven
+ *****************************************************************************/
+#ifndef _NGX_RTMP_MPEGTS_CRC_H_INCLUDED_
+#define _NGX_RTMP_MPEGTS_CRC_H_INCLUDED_
+
+
+#include <ngx_core.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * The definition of the used algorithm.
+ *
+ * This is not used anywhere in the generated code, but it may be used by the
+ * application code to call algoritm-specific code, is desired.
+ *****************************************************************************/
+#define CRC_ALGO_TABLE_DRIVEN 1
+
+
+/**
+ * The type of the CRC values.
+ *
+ * This type must be big enough to contain at least 32 bits.
+ *****************************************************************************/
+typedef uint_fast32_t ngx_rtmp_mpegts_crc_t;
+
+
+/**
+ * Calculate the initial crc value.
+ *
+ * \return     The initial crc value.
+ *****************************************************************************/
+static ngx_inline ngx_rtmp_mpegts_crc_t ngx_rtmp_mpegts_crc_init(void)
+{
+    return 0xffffffff;
+}
+
+
+/**
+ * Update the crc value with new data.
+ *
+ * \param crc      The current crc value.
+ * \param data     Pointer to a buffer of \a data_len bytes.
+ * \param data_len Number of bytes in the \a data buffer.
+ * \return         The updated crc value.
+ *****************************************************************************/
+ngx_rtmp_mpegts_crc_t ngx_rtmp_mpegts_crc_update(ngx_rtmp_mpegts_crc_t crc,
+    const void *data, size_t data_len);
+
+
+/**
+ * Calculate the final crc value.
+ *
+ * \param crc  The current crc value.
+ * \return     The final crc value.
+ *****************************************************************************/
+static ngx_inline ngx_rtmp_mpegts_crc_t
+ngx_rtmp_mpegts_crc_finalize(ngx_rtmp_mpegts_crc_t crc)
+{
+    return crc ^ 0x00000000;
+}
+
+
+#ifdef __cplusplus
+}           /* closing brace for extern "C" */
+#endif
+
+#endif      /* _NGX_RTMP_MPEGTS_CRC_H_INCLUDED_ */