| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #include "unpacker.h"
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| 8 | #include "cr_error.h"
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| 9 | #include "cr_pixeldata.h"
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| 10 |
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| 11 | #include "state/cr_bufferobject.h"
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| 12 |
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| 13 | void crUnpackDrawPixels(PCrUnpackerState pState)
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| 14 | {
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| 15 | CHECK_BUFFER_SIZE_STATIC_LAST(pState, sizeof(int) + 20, GLint);
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| 16 |
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| 17 | GLsizei width = READ_DATA(pState, sizeof( int ) + 0, GLsizei );
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| 18 | GLsizei height = READ_DATA(pState, sizeof( int ) + 4, GLsizei );
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| 19 | GLenum format = READ_DATA(pState, sizeof( int ) + 8, GLenum );
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| 20 | GLenum type = READ_DATA(pState, sizeof( int ) + 12, GLenum );
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| 21 | GLint noimagedata = READ_DATA(pState, sizeof( int ) + 16, GLint );
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| 22 | GLvoid *pixels;
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| 23 |
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| 24 | if (noimagedata && !crStateIsBufferBound(pState->pStateTracker, GL_PIXEL_UNPACK_BUFFER_ARB))
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| 25 | return;
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| 26 |
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| 27 | if (noimagedata)
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| 28 | pixels = (void*) (uintptr_t) READ_DATA(pState, sizeof( int ) + 20, GLint);
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| 29 | else
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| 30 | {
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| 31 | size_t cbImg = crImageSize( format, type, width, height );
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| 32 | if (RT_UNLIKELY(cbImg == 0))
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| 33 | {
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| 34 | pState->rcUnpack = VERR_INVALID_PARAMETER;
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| 35 | return;
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| 36 | }
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| 37 |
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| 38 | pixels = DATA_POINTER(pState, sizeof( int ) + 24, GLvoid );
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| 39 | CHECK_ARRAY_SIZE_FROM_PTR_UPDATE_LAST(pState, pixels, cbImg, GLubyte);
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| 40 | }
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| 41 |
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| 42 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
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| 43 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_SKIP_PIXELS, 0 );
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| 44 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_SKIP_ROWS, 0 );
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| 45 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_ALIGNMENT, 1 );
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| 46 |
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| 47 | pState->pDispatchTbl->DrawPixels( width, height, format, type, pixels );
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| 48 |
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| 49 | INCR_VAR_PTR(pState);
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| 50 | }
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| 51 |
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| 52 | void crUnpackBitmap(PCrUnpackerState pState)
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| 53 | {
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| 54 | CHECK_BUFFER_SIZE_STATIC_LAST(pState, sizeof(int) + 28, GLint);
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| 55 |
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| 56 | GLsizei width = READ_DATA(pState, sizeof( int ) + 0, GLsizei );
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| 57 | GLsizei height = READ_DATA(pState,sizeof( int ) + 4, GLsizei );
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| 58 | GLfloat xorig = READ_DATA(pState, sizeof( int ) + 8, GLfloat );
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| 59 | GLfloat yorig = READ_DATA(pState, sizeof( int ) + 12, GLfloat );
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| 60 | GLfloat xmove = READ_DATA(pState, sizeof( int ) + 16, GLfloat );
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| 61 | GLfloat ymove = READ_DATA(pState, sizeof( int ) + 20, GLfloat );
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| 62 | GLuint noimagedata = READ_DATA(pState, sizeof( int ) + 24, GLuint );
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| 63 | GLubyte *bitmap;
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| 64 |
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| 65 | if (noimagedata && !crStateIsBufferBound(pState->pStateTracker, GL_PIXEL_UNPACK_BUFFER_ARB))
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| 66 | return;
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| 67 |
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| 68 | if (noimagedata)
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| 69 | bitmap = (GLubyte *) (uintptr_t) READ_DATA(pState,sizeof(int) + 28, GLint);
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| 70 | else
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| 71 | {
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| 72 | /* Each pixel is one bit => 8 pixels per byte. */
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| 73 | size_t cbImg = crImageSize(GL_COLOR_INDEX, GL_BITMAP, width, height);
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| 74 | if (RT_UNLIKELY(cbImg == 0))
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| 75 | {
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| 76 | pState->rcUnpack = VERR_INVALID_PARAMETER;
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| 77 | return;
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| 78 | }
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| 79 |
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| 80 | bitmap = DATA_POINTER(pState, sizeof(int) + 32, GLubyte );
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| 81 | CHECK_ARRAY_SIZE_FROM_PTR_UPDATE_LAST(pState, bitmap, cbImg, GLubyte);
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| 82 | }
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| 83 |
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| 84 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
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| 85 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_SKIP_PIXELS, 0 );
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| 86 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_SKIP_ROWS, 0 );
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| 87 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_ALIGNMENT, 1 );
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| 88 |
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| 89 | pState->pDispatchTbl->Bitmap( width, height, xorig, yorig, xmove, ymove, bitmap );
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| 90 |
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| 91 | INCR_VAR_PTR(pState);
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| 92 | }
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| 93 |
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| 94 | /*
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| 95 | * ZPixCR - compressed DrawPixels
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| 96 | */
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| 97 | void crUnpackExtendZPixCR(PCrUnpackerState pState)
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| 98 | {
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| 99 | CHECK_BUFFER_SIZE_STATIC_LAST(pState, 32, GLint);
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| 100 |
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| 101 | GLsizei width = READ_DATA(pState, 8, GLsizei );
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| 102 | GLsizei height = READ_DATA(pState, 12, GLsizei );
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| 103 | GLenum format = READ_DATA(pState, 16, GLenum );
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| 104 | GLenum type = READ_DATA(pState, 20, GLenum );
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| 105 | GLenum ztype = READ_DATA(pState, 24, GLenum );
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| 106 | GLint zparm = READ_DATA(pState, 28, GLuint );
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| 107 | GLint length = READ_DATA(pState, 32, GLint );
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| 108 | GLvoid *pixels = DATA_POINTER(pState, 36, GLvoid );
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| 109 |
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| 110 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
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| 111 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_SKIP_PIXELS, 0 );
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| 112 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_SKIP_ROWS, 0 );
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| 113 | pState->pDispatchTbl->PixelStorei( GL_UNPACK_ALIGNMENT, 1 );
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| 114 |
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| 115 | CHECK_ARRAY_SIZE_FROM_PTR_UPDATE_LAST(pState, pixels, length, GLubyte);
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| 116 | pState->pDispatchTbl->ZPixCR( width, height, format, type, ztype, zparm, length, pixels );
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| 117 |
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| 118 | /* Don't call INCR_VAR_PTR(); - it's done in crUnpackExtend() */
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| 119 | }
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