diff options
Diffstat (limited to 'TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/util.cpp')
| -rw-r--r-- | TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/util.cpp | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/util.cpp b/TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/util.cpp deleted file mode 100644 index f56861175ef..00000000000 --- a/TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/util.cpp +++ /dev/null @@ -1,467 +0,0 @@ -/* $Id$ */ - -/* - * Copyright (c) 1992 The Regents of the University of California. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose, without fee, and without written agreement is - * hereby granted, provided that the above copyright notice and the following - * two paragraphs appear in all copies of this software. - * - * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR - * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT - * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF - * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO - * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - */ - -#include <stdlib.h> -#include "video.h" -#include "proto.h" -#include "util.h" - -ACE_RCSID(mpeg_client, util, "$Id$") - -#define TRUE 1 -#define FALSE 0 - -/* Declarations of global variables used. */ - -unsigned int curBits; -int bitOffset; -int bufLength; -unsigned int *bitBuffer; - -/* Bit masks used by bit i/o operations. */ - -unsigned int nBitMask[] = { 0x00000000, 0x80000000, 0xc0000000, 0xe0000000, - 0xf0000000, 0xf8000000, 0xfc000000, 0xfe000000, - 0xff000000, 0xff800000, 0xffc00000, 0xffe00000, - 0xfff00000, 0xfff80000, 0xfffc0000, 0xfffe0000, - 0xffff0000, 0xffff8000, 0xffffc000, 0xffffe000, - 0xfffff000, 0xfffff800, 0xfffffc00, 0xfffffe00, - 0xffffff00, 0xffffff80, 0xffffffc0, 0xffffffe0, - 0xfffffff0, 0xfffffff8, 0xfffffffc, 0xfffffffe}; - -unsigned int bitMask[] = { 0xffffffff, 0x7fffffff, 0x3fffffff, 0x1fffffff, - 0x0fffffff, 0x07ffffff, 0x03ffffff, 0x01ffffff, - 0x00ffffff, 0x007fffff, 0x003fffff, 0x001fffff, - 0x000fffff, 0x0007ffff, 0x0003ffff, 0x0001ffff, - 0x0000ffff, 0x00007fff, 0x00003fff, 0x00001fff, - 0x00000fff, 0x000007ff, 0x000003ff, 0x000001ff, - 0x000000ff, 0x0000007f, 0x0000003f, 0x0000001f, - 0x0000000f, 0x00000007, 0x00000003, 0x00000001}; - -unsigned int rBitMask[] = { 0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8, - 0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80, - 0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800, - 0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000, - 0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000, - 0xfff00000, 0xffe00000, 0xffc00000, 0xff800000, - 0xff000000, 0xfe000000, 0xfc000000, 0xf8000000, - 0xf0000000, 0xe0000000, 0xc0000000, 0x80000000}; - -unsigned int bitTest[] = { 0x80000000, 0x40000000, 0x20000000, 0x10000000, - 0x08000000, 0x04000000, 0x02000000, 0x01000000, - 0x00800000, 0x00400000, 0x00200000, 0x00100000, - 0x00080000, 0x00040000, 0x00020000, 0x00010000, - 0x00008000, 0x00004000, 0x00002000, 0x00001000, - 0x00000800, 0x00000400, 0x00000200, 0x00000100, - 0x00000080, 0x00000040, 0x00000020, 0x00000010, - 0x00000008, 0x00000004, 0x00000002, 0x00000001}; - - -/* - *-------------------------------------------------------------- - * - * correct_underflow -- - * - * Called when buffer does not have sufficient data to - * satisfy request for bits. - * Calls get_more_data, an application specific routine - * required to fill the buffer with more data. - * - * Results: - * None really. - * - * Side effects: - * buf_length and buffer fields in curVidStream structure - * may be changed. - * - *-------------------------------------------------------------- - */ - -void -correct_underflow() { - - int status; - - status = get_more_data(curVidStream->buf_start, - curVidStream->max_buf_length, - &bufLength, &bitBuffer); - - if (status < 0) { - if (!quietFlag) { - fprintf (stderr, "\n"); - perror("Unexpected read error."); - } - exit(1); - } - else if ((status == 0) && (bufLength < 1)) { - if (!quietFlag) { - fprintf(stderr, "\nImproper or missing sequence end code.\n"); - } -#ifdef ANALYSIS - PrintAllStats(); -#endif - if (!quietFlag) { - PrintTimeInfo(); - } -/* - if (loopFlag) longjmp(env, 1); - DestroyVidStream(curVidStream); -*/ - exit(0); - } -#ifdef UTIL2 - curBits = *bitBuffer << bitOffset; -#else - curBits = *bitBuffer; -#endif - -} - - -/* - *-------------------------------------------------------------- - * - * next_bits -- - * - * Compares next num bits to low order position in mask. - * Buffer pointer is NOT advanced. - * - * Results: - * TRUE, FALSE, or error code. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -int next_bits(int num, unsigned int mask) -{ - unsigned int stream; - int ret_value; - - /* If no current stream, return error. */ - - if (curVidStream == NULL) - return NO_VID_STREAM; - - /* Get next num bits, no buffer pointer advance. */ - - show_bitsn(num, stream); - - /* Compare bit stream and mask. Set return value toTRUE if equal, FALSE if - differs. - */ - - if (mask == stream) { - ret_value = TRUE; - } else ret_value = FALSE; - - /* Return return value. */ - - return ret_value; -} - - -/* - *-------------------------------------------------------------- - * - * get_ext_data -- - * - * Assumes that bit stream is at begining of extension - * data. Parses off extension data into dynamically - * allocated space until start code is hit. - * - * Results: - * Pointer to dynamically allocated memory containing - * extension data. - * - * Side effects: - * Bit stream irreversibly parsed. - * - *-------------------------------------------------------------- - */ - -char *get_ext_data () -{ - int size, marker; - char *dataPtr; - unsigned int data; - - /* Set initial ext data buffer size. */ - - size = EXT_BUF_SIZE; - - /* Allocate ext data buffer. */ - - dataPtr = (char *) malloc(size); - - /* Initialize marker to keep place in ext data buffer. */ - - marker = 0; - - /* While next data is not start code... */ - while (!next_bits(24, 0x000001)) { - - /* Get next byte of ext data. */ - - get_bits8(data); - - /* Put ext data into ext data buffer. Advance marker. */ - - dataPtr[marker] = (char) data; - marker++; - - /* If end of ext data buffer reached, resize data buffer. */ - - if (marker == size) { - size += EXT_BUF_SIZE; - dataPtr = (char *) realloc(dataPtr, size); - } - } - - /* Realloc data buffer to free any extra space. */ - - dataPtr = (char *) realloc(dataPtr, marker); - - /* Return pointer to ext data buffer. */ - - return dataPtr; -} - - -/* - *-------------------------------------------------------------- - * - * next_start_code -- - * - * Parses off bitstream until start code reached. When done - * next 4 bytes of bitstream will be start code. Bit offset - * reset to 0. - * - * Results: - * Status code. - * - * Side effects: - * Bit stream irreversibly parsed. - * - *-------------------------------------------------------------- - */ - -int next_start_code() -{ - int state; - int byteoff; - unsigned int data; - - /* If no current stream, return error. */ - - if (curVidStream == NULL) - return NO_VID_STREAM; - - /* If insufficient buffer length, correct underflow. */ -/* - if (bufLength < 2) { - correct_underflow(); - } - */ - - /* If bit offset not zero, reset and advance buffer pointer. */ - - byteoff = bitOffset % 8; - - if (byteoff != 0) { - flush_bits((8-byteoff)); - } - - /* Set state = 0. */ - - state = 0; - - /* While buffer has data ... */ - - while(bufLength > 0) { - - /* If insufficient data exists, correct underflow. */ -/* - if (bufLength < 2) { - correct_underflow(); - } -*/ - /* If next byte is zero... */ - - get_bits8(data); - - if (data == 0) { - - /* If state < 2, advance state. */ - - if (state < 2) state++; - } - - /* If next byte is one... */ - - else if (data == 1) { - - /* If state == 2, advance state (i.e. start code found). */ - - if (state == 2) state++; - - /* Otherwise, reset state to zero. */ - - else state = 0; - } - - /* Otherwise byte is neither 1 or 0, reset state to 0. */ - - else { - state = 0; - } - - /* If state == 3 (i.e. start code found)... */ - - if (state == 3) { - - /* Set buffer pointer back and reset length & bit offsets so - next bytes will be beginning of start code. - */ - - bitOffset = bitOffset - 24; - -#ifdef ANALYSIS - bitCount -= 24; -#endif - - if (bitOffset < 0) { - bitOffset = 32 + bitOffset; - bufLength++; - bitBuffer--; -#ifdef UTIL2 - curBits = *bitBuffer << bitOffset; -#else - curBits = *bitBuffer; -#endif - } - else { -#ifdef UTIL2 - curBits = *bitBuffer << bitOffset; -#else - curBits = *bitBuffer; -#endif - } - - /* Return success. */ - - return OK; - } - } - - /* Return underflow error. */ - - return UNDERFLOW; -} - - -/* - *-------------------------------------------------------------- - * - * get_extra_bit_info -- - * - * Parses off extra bit info stream into dynamically - * allocated memory. Extra bit info is indicated by - * a flag bit set to 1, followed by 8 bits of data. - * This continues until the flag bit is zero. Assumes - * that bit stream set to first flag bit in extra - * bit info stream. - * - * Results: - * Pointer to dynamically allocated memory with extra - * bit info in it. Flag bits are NOT included. - * - * Side effects: - * Bit stream irreversibly parsed. - * - *-------------------------------------------------------------- - */ - -char *get_extra_bit_info () -{ - int size, marker; - char *dataPtr; - unsigned int data; - - /* Get first flag bit. */ - get_bits1(data); - - /* If flag is false, return NULL pointer (i.e. no extra bit info). */ - - if (!data) return NULL; - - /* Initialize size of extra bit info buffer and allocate. */ - - size = EXT_BUF_SIZE; - dataPtr = (char *) malloc(size); - - /* Reset marker to hold place in buffer. */ - - marker = 0; - - /* While flag bit is true. */ - - while (data) { - - /* Get next 8 bits of data. */ - get_bits8(data); - - /* Place in extra bit info buffer. */ - - dataPtr[marker] = (char) data; - marker++; - - /* If buffer is full, reallocate. */ - - if (marker == size) { - size += EXT_BUF_SIZE; - dataPtr = (char *) realloc(dataPtr, size); - } - - /* Get next flag bit. */ - get_bits1(data); - } - - /* Reallocate buffer to free extra space. */ - - dataPtr = (char *) realloc(dataPtr, marker); - - /* Return pointer to extra bit info buffer. */ - - return dataPtr; -} - - - - - - - - |