Image Magick

ImageMagick-6.1.1/coders/avi.c File Reference

#include <setjmp.h>
#include "magick/studio.h"
#include "magick/attribute.h"
#include "magick/blob.h"
#include "magick/blob_private.h"
#include "magick/color_private.h"
#include "magick/colorspace.h"
#include "magick/constitute.h"
#include "magick/error.h"
#include "magick/error_private.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image_private.h"
#include "magick/list.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/profile.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/utility.h"

Include dependency graph for avi.c:

Go to the source code of this file.

Data Structures
struct	_AVIInfo
struct	_BMPInfo
struct	_StreamInfo
Defines
#define	ICC_MARKER   (JPEG_APP0+2)
#define	ICC_PROFILE   "ICC_PROFILE"
#define	IPTC_MARKER   (JPEG_APP0+13)
#define	XML_MARKER   (JPEG_APP0+1)
#define	MaxBufferExtent   8192
#define	BI_RLE8   1
Typedefs
typedef _AVIInfo	AVIInfo
typedef _BMPInfo	BMPInfo
typedef _StreamInfo	StreamInfo
Functions
MagickBooleanType	DecodeImage (Image *image, const MagickBooleanType compression, unsigned char *pixels)
MagickBooleanType	IsAVI (const unsigned char *magick, const size_t length)
Image *	ReadAVIImage (const ImageInfo *image_info, ExceptionInfo *exception)
ModuleExport void	RegisterAVIImage (void)
ModuleExport void	UnregisterAVIImage (void)

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Define Documentation

#define BI_RLE8   1

Referenced by DecodeImage(), ReadBMPImage(), and WriteBMPImage().

#define ICC_MARKER   (JPEG_APP0+2)

Definition at line 80 of file avi.c. Referenced by ReadAVIImage().

#define ICC_PROFILE   "ICC_PROFILE"

Definition at line 81 of file avi.c.

#define IPTC_MARKER   (JPEG_APP0+13)

Definition at line 82 of file avi.c. Referenced by ReadAVIImage().

#define MaxBufferExtent   8192

Definition at line 84 of file avi.c.

#define XML_MARKER   (JPEG_APP0+1)

Definition at line 83 of file avi.c.

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Typedef Documentation

typedef struct _AVIInfo AVIInfo

typedef struct _BMPInfo BMPInfo

typedef struct _StreamInfo StreamInfo

Referenced by AcquirePixelStream(), DestroyPixelStream(), GetIndexesFromStream(), GetPixelsFromStream(), SetPixelStream(), and SyncPixelStream().

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Function Documentation

MagickBooleanType DecodeImage (  Image *  image, const MagickBooleanType  compression, unsigned char *  pixels )  [static]

Definition at line 787 of file avi.c. References assert, BI_RLE8, _Image::client_data, _Image::columns, _Image::debug, _Image::filename, GetMagickModule, LoadImageTag, LogMagickEvent(), MagickBooleanType, MagickFalse, MagickProgressMonitor, MagickSignature, MagickTrue, Min, _Image::progress_monitor, QuantumTick, ReadBlobByte(), ResetMagickMemory(), _Image::rows, _Image::signature, and TraceEvent. { #if !defined(__WINDOWS__) || defined(__MINGW32__) #define BI_RLE8 1 #endif int count; long y; MagickBooleanType status; register long i, x; register unsigned char *p, *q; unsigned char byte; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),image->filename); assert(pixels != (unsigned char *) NULL); (void) ResetMagickMemory(pixels,0,(size_t) image->columns*image->rows* sizeof(pixels)); byte=0; x=0; p=pixels; q=pixels+(size_t) image->columns*image->rows; for (y=0; y < (long) image->rows; ) { if ((p < pixels) || (p >= q)) break; count=ReadBlobByte(image); if (count == EOF) break; if (count != 0) { count=Min((unsigned long) count,q-p); /* Encoded mode. */ byte=(unsigned char) ReadBlobByte(image); if (compression == BI_RLE8) { for (i=0; i < count; i++) *p++=(unsigned char) byte; } else { for (i=0; i < count; i++) *p++=(unsigned char) ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); } x+=count; } else { /* Escape mode. */ count=ReadBlobByte(image); if (count == 0x01) return(MagickTrue); switch (count) { case 0x00: { /* End of line. */ x=0; y++; p=pixels+y*image->columns; break; } case 0x02: { /* Delta mode. */ x+=ReadBlobByte(image); y+=ReadBlobByte(image); p=pixels+y*image->columns+x; break; } default: { /* Absolute mode. */ count=Min((unsigned long) count,q-p); if (compression == BI_RLE8) for (i=0; i < count; i++) *p++=(unsigned char) ReadBlobByte(image); else for (i=0; i < count; i++) { if ((i & 0x01) == 0) byte=(unsigned char) ReadBlobByte(image); *p++=(unsigned char) ((i & 0x01) != 0 ? (byte & 0x0f) : ((byte >> 4) & 0x0f)); } x+=count; /* Read pad byte. */ if (compression == BI_RLE8) { if ((count & 0x01) != 0) (void) ReadBlobByte(image); } else if (((count & 0x03) == 1) || ((count & 0x03) == 2)) (void) ReadBlobByte(image); break; } } } if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } (void) ReadBlobByte(image); /* end of line */ (void) ReadBlobByte(image); return(MagickTrue); } Here is the call graph for this function:

MagickBooleanType IsAVI (  const unsigned char *  magick, const size_t  length )  [static]

Definition at line 956 of file avi.c. References MagickBooleanType, MagickFalse, and MagickTrue. Referenced by RegisterAVIImage(). { if (length < 4) return(MagickFalse); if (memcmp(magick,"RIFF",4) == 0) return(MagickTrue); return(MagickFalse); }

Image* ReadAVIImage (  const ImageInfo *  image_info, ExceptionInfo *  exception )  [static]

Definition at line 996 of file avi.c. References AcquireMagickMemory(), AllocateImage(), AllocateImageColormap(), AllocateNextImage(), assert, _BMPInfo::bits_per_pixel, _PixelPacket::blue, _StreamInfo::buffer_size, _AVIInfo::buffer_size, _Image::client_data, CloseBlob(), CMYKColorspace, CoderEvent, _Image::colormap, _ImageInfo::colors, _Image::colorspace, _Image::columns, _Image::compression, _BMPInfo::compression, ConstrainColormapIndex(), CopyMagickMemory(), CorruptImageError, _StreamInfo::data_handler, _StreamInfo::data_length, _AVIInfo::data_length, _StreamInfo::data_rate, _AVIInfo::data_rate, _StreamInfo::data_type, _Image::debug, _ImageInfo::debug, DecodeImage(), _AVIInfo::delay, _Image::depth, DestroyImage(), DestroyImageList(), DirectClass, _Image::exception, _Image::filename, _ImageInfo::filename, _StreamInfo::flags, _AVIInfo::flags, FormatMagickString(), GeometryInfo, GetBlobSize(), GetFirstImageInList(), GetImageAttribute(), GetImagePixels(), GetIndexes(), GetMagickModule, _PixelPacket::green, _BMPInfo::height, _AVIInfo::height, ICC_MARKER, _BMPInfo::image_size, ImageAttribute, _BMPInfo::important_colors, IndexPacket, InheritException(), _StreamInfo::initial_frames, _AVIInfo::initial_frames, _Image::interlace, IPTC_MARKER, JPEGCompression, LoadImagesTag, LoadImageTag, LocaleCompare(), LogMagickEvent(), LosslessJPEGCompression, _Image::magick_columns, _Image::magick_rows, MagickBooleanType, MagickFalse, MagickProgressMonitor, MagickSignature, MagickTrue, _Image::matte, Max, _AVIInfo::max_data_rate, MaxRGB, MaxTextExtent, _Image::next, NoInterlace, _BMPInfo::number_colors, _ImageInfo::number_scenes, _AVIInfo::number_streams, _PixelPacket::opacity, OpenBlob(), OptionError, _AVIInfo::pad_granularity, ParseGeometry(), _ImageInfo::ping, PixelPacket, PixelsPerCentimeterResolution, PixelsPerInchResolution, PlaneInterlace, _BMPInfo::planes, _Image::previous, _StreamInfo::priority, _Image::progress_monitor, _StreamInfo::quality, Quantum, QuantumTick, ReadBinaryBlobMode, ReadBlob(), ReadBlobByte(), ReadBlobLSBLong(), ReadBlobLSBShort(), _PixelPacket::red, RelinquishMagickMemory(), ResetMagickMemory(), ResourceLimitError, _GeometryInfo::rho, _Image::rows, _StreamInfo::sample_size, ScaleCharToQuantum, ScaleColor5to8, ScaleColor6to8, ScaleShortToQuantum, _ImageInfo::scene, _Image::scene, SetImageAttribute(), SetImagePixels(), _GeometryInfo::sigma, _ExceptionInfo::signature, _ImageInfo::signature, _BMPInfo::size, ssize_t, _StreamInfo::start_time, _AVIInfo::start_time, _Image::storage_class, _ImageInfo::subrange, SyncImagePixels(), SyncNextImageInList(), TellBlob(), ThrowMagickException(), ThrowReaderException, _StreamInfo::time_scale, _AVIInfo::time_scale, _AVIInfo::total_frames, TraceEvent, _Image::units, _ImageAttribute::value, _ImageInfo::verbose, _BMPInfo::width, _AVIInfo::width, _BMPInfo::x_pixels, _Image::x_resolution, _BMPInfo::y_pixels, and _Image::y_resolution. Referenced by RegisterAVIImage(). { AVIInfo avi_info; BMPInfo bmp_info; char id[MaxTextExtent], message[MaxTextExtent]; Image *image; IndexPacket index; long y; MagickBooleanType status; PixelPacket *colormap; register IndexPacket *indexes; register long x; register PixelPacket *q; register long i; register unsigned char *p; ssize_t count; StreamInfo stream_info; unsigned char *pixels; unsigned long bit, bytes_per_line, chunk_size, number_colors; #if defined(HasJPEG) const ImageAttribute *attribute; ErrorManager error_manager; GeometryInfo geometry_info; JSAMPLE *jpeg_pixels; JSAMPROW scanline[1]; struct jpeg_decompress_struct jpeg_info; struct jpeg_error_mgr jpeg_error; unsigned long number_pixels, units; #endif /* Open image file. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); if (image_info->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),image_info->filename); assert(exception != (ExceptionInfo *) NULL); assert(exception->signature == MagickSignature); image=AllocateImage(image_info); status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception); if (status == MagickFalse) { DestroyImageList(image); return((Image *) NULL); } (void) ResetMagickMemory(&avi_info,0,sizeof(AVIInfo)); (void) ResetMagickMemory(&bmp_info,0,sizeof(BMPInfo)); colormap=(PixelPacket *) NULL; number_colors=0; #if defined(HasJPEG) /* Initialize JPEG image structure. */ jpeg_info.err=jpeg_std_error(&jpeg_error); jpeg_info.err->emit_message=(void (*)(j_common_ptr,int)) EmitMessage; jpeg_info.err->error_exit=(void (*)(j_common_ptr)) JPEGErrorHandler; jpeg_pixels=(JSAMPLE *) NULL; error_manager.image=image; error_manager.verbose=(int) image_info->verbose; if (setjmp(error_manager.error_recovery) != 0) { if (jpeg_pixels != (JSAMPLE *) NULL) jpeg_pixels=(unsigned char *) RelinquishMagickMemory(jpeg_pixels); jpeg_destroy_decompress(&jpeg_info); InheritException(exception,&image->exception); number_pixels=image->columns*image->rows; if (number_pixels != 0) return(GetFirstImageInList(image)); image=DestroyImage(image); return((Image *) NULL); } jpeg_info.client_data=(void *) &error_manager; jpeg_create_decompress(&jpeg_info); JPEGSourceManagerMemory(&jpeg_info, (unsigned char *) &MJPGDHTSeg, 0x1A8); jpeg_read_header(&jpeg_info, FALSE); #endif for ( ; ; ) { count=ReadBlob(image,4,(unsigned char *) id); if (count == 0) break; id[4]='\0'; chunk_size=ReadBlobLSBLong(image); if (chunk_size == 0) break; if ((chunk_size & 0x01) != 0) chunk_size++; if (image_info->verbose != MagickFalse) { (void) fprintf(stdout,"AVI cid %s\n",id); (void) fprintf(stdout," chunk size %lu\n",chunk_size); } if ((LocaleCompare(id,"00db") == 0) || (LocaleCompare(id,"00dc") == 0)) { /* Read JPG compressed image, uses only YCbCr color space encoding and does not include the JPEG Huffman table, as it is pre-defined. */ if (LocaleCompare(bmp_info.compression,"MJPG") == 0) { #if defined(HasJPEG) JPEGSourceManagerBLOB(&jpeg_info,image,chunk_size); jpeg_set_marker_processor(&jpeg_info,JPEG_COM,ReadComment); jpeg_set_marker_processor(&jpeg_info,ICC_MARKER,ReadICCProfile); jpeg_set_marker_processor(&jpeg_info,IPTC_MARKER,ReadIPTCProfile); for (i=1; i < 16; i++) if ((i != 2) && (i != 13) && (i != 14)) jpeg_set_marker_processor(&jpeg_info,(int) i+JPEG_APP0,ReadProfile); i=jpeg_read_header(&jpeg_info,MagickTrue); if (jpeg_info.out_color_space == JCS_CMYK) image->colorspace=CMYKColorspace; /* Set image resolution. */ units=0; if ((jpeg_info.saw_JFIF_marker != 0) && (jpeg_info.X_density != 1) && (jpeg_info.Y_density != 1)) { image->x_resolution=(double) jpeg_info.X_density; image->y_resolution=(double) jpeg_info.Y_density; units=(unsigned long) jpeg_info.density_unit; } attribute=GetImageAttribute(image,"EXIF:XResolution"); if ((attribute != (const ImageAttribute *) NULL) && (attribute->value != (char *) NULL)) { (void) ParseGeometry(attribute->value,&geometry_info); if (geometry_info.sigma != 0) image->x_resolution=geometry_info.rho/geometry_info.sigma; (void) SetImageAttribute(image,"EXIF:XResolution",(char *) NULL); } attribute=GetImageAttribute(image,"EXIF:YResolution"); if ((attribute != (const ImageAttribute *) NULL) && (attribute->value != (char *) NULL)) { (void) ParseGeometry(attribute->value,&geometry_info); if (geometry_info.sigma != 0) image->y_resolution=geometry_info.rho/geometry_info.sigma; (void) SetImageAttribute(image,"EXIF:YResolution",(char *) NULL); } if (units == 1) image->units=PixelsPerInchResolution; if (units == 2) image->units=PixelsPerCentimeterResolution; number_pixels=image->columns*image->rows; if (number_pixels != 0) { double scale_factor; /* Let the JPEG library subsample for us. */ jpeg_calc_output_dimensions(&jpeg_info); image->magick_columns=jpeg_info.output_width; image->magick_rows=jpeg_info.output_height; scale_factor=(double) jpeg_info.output_width/image->columns; if (scale_factor > ((double) jpeg_info.output_height/image->rows)) scale_factor=(double) jpeg_info.output_height/image->rows; jpeg_info.scale_denom=(unsigned int) scale_factor; jpeg_calc_output_dimensions(&jpeg_info); if (image->debug != MagickFalse) (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Scale factor: %ld", (long) scale_factor); } if (image_info->subrange != 0) { jpeg_info.scale_denom=(unsigned int) image_info->subrange; jpeg_calc_output_dimensions(&jpeg_info); } #if (JPEG_LIB_VERSION >= 61) && defined(D_PROGRESSIVE_SUPPORTED) #ifdef D_LOSSLESS_SUPPORTED image->interlace= jpeg_info.process == JPROC_PROGRESSIVE ? PlaneInterlace : NoInterlace; image->compression=jpeg_info.process == JPROC_LOSSLESS ? LosslessJPEGCompression : JPEGCompression; if (jpeg_info.data_precision > 8) (void) ThrowMagickException(exception,GetMagickModule(),OptionError, "12-bit JPEG not supported. Reducing pixel data to 8 bits", image->filename); #else image->interlace=jpeg_info.progressive_mode != 0 ? PlaneInterlace : NoInterlace; image->compression=JPEGCompression; #endif #else image->compression=JPEGCompression; image->interlace=PlaneInterlace; #endif if ((image_info->colors != 0) && (image_info->colors <= 256)) { /* Let the JPEG library quantize for us. */ jpeg_info.quantize_colors=MagickTrue; jpeg_info.desired_number_of_colors=(int) image_info->colors; if (AllocateImageColormap(image,image_info->colors) == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } (void) jpeg_start_decompress(&jpeg_info); image->columns=jpeg_info.output_width; image->rows=jpeg_info.output_height; image->depth=(unsigned long) jpeg_info.data_precision; if ((jpeg_info.output_components == 1) && (jpeg_info.quantize_colors == MagickFalse)) { if (AllocateImageColormap(image,1UL << image->depth) == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); } if (image->debug != MagickFalse) { if (image->interlace == PlaneInterlace) (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Interlace: progressive"); else (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Interlace: nonprogressive"); (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Data precision: %d", (int) jpeg_info.data_precision); (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Geometry: %dx%d", (int) jpeg_info.output_width,(int) jpeg_info.output_height); #ifdef D_LOSSLESS_SUPPORTED if (image->compression==LosslessJPEGCompression) (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Quality: 100 (lossless)"); else #endif { long hashval, sum; /* Log the JPEG quality that was used for compression. */ sum=0; for (i=0; i < NUM_QUANT_TBLS; i++) { int j; if (jpeg_info.quant_tbl_ptrs[i] != NULL) for (j=0; j < DCTSIZE2; j++) { UINT16 *c; c=jpeg_info.quant_tbl_ptrs[i]->quantval; sum+=c[j]; } } if ((jpeg_info.quant_tbl_ptrs[0] != NULL) && (jpeg_info.quant_tbl_ptrs[1] != NULL)) { int hash[]= { 1020, 1015, 932, 848, 780, 735, 702, 679, 660, 645, 632, 623, 613, 607, 600, 594, 589, 585, 581, 571, 555, 542, 529, 514, 494, 474, 457, 439, 424, 410, 397, 386, 373, 364, 351, 341, 334, 324, 317, 309, 299, 294, 287, 279, 274, 267, 262, 257, 251, 247, 243, 237, 232, 227, 222, 217, 213, 207, 202, 198, 192, 188, 183, 177, 173, 168, 163, 157, 153, 148, 143, 139, 132, 128, 125, 119, 115, 108, 104, 99, 94, 90, 84, 79, 74, 70, 64, 59, 55, 49, 45, 40, 34, 30, 25, 20, 15, 11, 6, 4, 0 }, sums[]= { 32640,32635,32266,31495,30665,29804,29146,28599,28104,27670, 27225,26725,26210,25716,25240,24789,24373,23946,23572,22846, 21801,20842,19949,19121,18386,17651,16998,16349,15800,15247, 14783,14321,13859,13535,13081,12702,12423,12056,11779,11513, 11135,10955,10676,10392,10208, 9928, 9747, 9564, 9369, 9193, 9017, 8822, 8639, 8458, 8270, 8084, 7896, 7710, 7527, 7347, 7156, 6977, 6788, 6607, 6422, 6236, 6054, 5867, 5684, 5495, 5305, 5128, 4945, 4751, 4638, 4442, 4248, 4065, 3888, 3698, 3509, 3326, 3139, 2957, 2775, 2586, 2405, 2216, 2037, 1846, 1666, 1483, 1297, 1109, 927, 735, 554, 375, 201, 128, 0 }; hashval=(long) ((jpeg_info.quant_tbl_ptrs[0]->quantval[2]+ jpeg_info.quant_tbl_ptrs[0]->quantval[53]+ jpeg_info.quant_tbl_ptrs[1]->quantval[0]+ jpeg_info.quant_tbl_ptrs[1]->quantval[DCTSIZE2-1])); for (i=0; i < 100; i++) { if ((hashval >= hash[i]) || (sum >= sums[i])) { if ((hashval > hash[i]) || (sum > sums[i])) (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Quality: %ld (approximate)",i+1); else (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Quality: %ld",i+1); break; } } } else if (jpeg_info.quant_tbl_ptrs[0] != NULL) { int bwhash[]= { 510, 505, 422, 380, 355, 338, 326, 318, 311, 305, 300, 297, 293, 291, 288, 286, 284, 283, 281, 280, 279, 278, 277, 273, 262, 251, 243, 233, 225, 218, 211, 205, 198, 193, 186, 181, 177, 172, 168, 164, 158, 156, 152, 148, 145, 142, 139, 136, 133, 131, 129, 126, 123, 120, 118, 115, 113, 110, 107, 105, 102, 100, 97, 94, 92, 89, 87, 83, 81, 79, 76, 74, 70, 68, 66, 63, 61, 57, 55, 52, 50, 48, 44, 42, 39, 37, 34, 31, 29, 26, 24, 21, 18, 16, 13, 11, 8, 6, 3, 2, 0 }, bwsum[]= { 16320,16315,15946,15277,14655,14073,13623,13230,12859,12560, 12240,11861,11456,11081,10714,10360,10027, 9679, 9368, 9056, 8680, 8331, 7995, 7668, 7376, 7084, 6823, 6562, 6345, 6125, 5939, 5756, 5571, 5421, 5240, 5086, 4976, 4829, 4719, 4616, 4463, 4393, 4280, 4166, 4092, 3980, 3909, 3835, 3755, 3688, 3621, 3541, 3467, 3396, 3323, 3247, 3170, 3096, 3021, 2952, 2874, 2804, 2727, 2657, 2583, 2509, 2437, 2362, 2290, 2211, 2136, 2068, 1996, 1915, 1858, 1773, 1692, 1620, 1552, 1477, 1398, 1326, 1251, 1179, 1109, 1031, 961, 884, 814, 736, 667, 592, 518, 441, 369, 292, 221, 151, 86, 64, 0 }; hashval=(long) ((jpeg_info.quant_tbl_ptrs[0]->quantval[2]+ jpeg_info.quant_tbl_ptrs[0]->quantval[53])); for (i=0; i < 100; i++) { if ((hashval >= bwhash[i]) || (sum >= bwsum[i])) { if ((hashval > bwhash[i]) || (sum > bwsum[i])) (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Quality: %ld (approximate)",i+1); else (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Quality: %ld",i+1); break; } } } } switch (jpeg_info.out_color_space) { case JCS_CMYK: { (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Colorspace: CMYK"); (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Sampling factors: (%d,%d),(%d,%d),(%d,%d),(%d,%d)", jpeg_info.comp_info[0].h_samp_factor, jpeg_info.comp_info[0].v_samp_factor, jpeg_info.comp_info[1].h_samp_factor, jpeg_info.comp_info[1].v_samp_factor, jpeg_info.comp_info[2].h_samp_factor, jpeg_info.comp_info[2].v_samp_factor, jpeg_info.comp_info[3].h_samp_factor, jpeg_info.comp_info[3].v_samp_factor); break; } case JCS_GRAYSCALE: { (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Colorspace: GRAYSCALE"); (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Sampling factors: (%d,%d)",jpeg_info.comp_info[0].h_samp_factor, jpeg_info.comp_info[0].v_samp_factor); break; } case JCS_RGB: { (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Colorspace: RGB"); (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Sampling factors: (%d,%d),(%d,%d),(%d,%d)", jpeg_info.comp_info[0].h_samp_factor, jpeg_info.comp_info[0].v_samp_factor, jpeg_info.comp_info[1].h_samp_factor, jpeg_info.comp_info[1].v_samp_factor, jpeg_info.comp_info[2].h_samp_factor, jpeg_info.comp_info[2].v_samp_factor); break; } default: { (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Colorspace: %d", jpeg_info.out_color_space); (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Sampling factors: (%d,%d),(%d,%d),(%d,%d),(%d,%d)", jpeg_info.comp_info[0].h_samp_factor, jpeg_info.comp_info[0].v_samp_factor, jpeg_info.comp_info[1].h_samp_factor, jpeg_info.comp_info[1].v_samp_factor, jpeg_info.comp_info[2].h_samp_factor, jpeg_info.comp_info[2].v_samp_factor, jpeg_info.comp_info[3].h_samp_factor, jpeg_info.comp_info[3].v_samp_factor); break; } } } if (image_info->ping != MagickFalse) { jpeg_destroy_decompress(&jpeg_info); CloseBlob(image); return(GetFirstImageInList(image)); } jpeg_pixels=(JSAMPLE *) AcquireMagickMemory((size_t) jpeg_info.output_components*image->columns*sizeof(JSAMPLE)); if (jpeg_pixels == (JSAMPLE *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); /* Convert JPEG pixels to pixel packets. */ scanline[0]=(JSAMPROW) jpeg_pixels; for (y=0; y < (long) image->rows; y++) { (void) jpeg_read_scanlines(&jpeg_info,scanline,1); p=jpeg_pixels; q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); if (jpeg_info.data_precision > 8) { if (jpeg_info.output_components == 1) for (x=0; x < (long) image->columns; x++) { index=ConstrainColormapIndex(image,16*(unsigned long) GETJSAMPLE(*p)); indexes[x]=(IndexPacket) index; *q++=image->colormap[index]; p++; } else for (x=0; x < (long) image->columns; x++) { q->red=ScaleShortToQuantum(16*GETJSAMPLE(*p++)); q->green=ScaleShortToQuantum(16*GETJSAMPLE(*p++)); q->blue=ScaleShortToQuantum(16*GETJSAMPLE(*p++)); if (image->colorspace == CMYKColorspace) indexes[x]=ScaleShortToQuantum(16*GETJSAMPLE(*p++)); q++; } } else if (jpeg_info.output_components == 1) for (x=0; x < (long) image->columns; x++) { index=ConstrainColormapIndex(image,(unsigned long) GETJSAMPLE(*p)); indexes[x]=(IndexPacket) index; *q++=image->colormap[index]; p++; } else for (x=0; x < (long) image->columns; x++) { q->red=ScaleCharToQuantum(GETJSAMPLE(*p++)); q->green=ScaleCharToQuantum(GETJSAMPLE(*p++)); q->blue=ScaleCharToQuantum(GETJSAMPLE(*p++)); if (image->colorspace == CMYKColorspace) indexes[x]=ScaleCharToQuantum(GETJSAMPLE(*p++)); q++; } if (SyncImagePixels(image) == MagickFalse) break; if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(y,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,y,image->rows, image->client_data); if (status == MagickFalse) break; } } if (jpeg_info.quantize_colors != MagickFalse) for (i=0; i < jpeg_info.actual_number_of_colors; i++) { image->colormap[i].red=ScaleCharToQuantum(jpeg_info.colormap[0][i]); image->colormap[i].green=ScaleCharToQuantum(jpeg_info.colormap[1][i]); image->colormap[i].blue=ScaleCharToQuantum(jpeg_info.colormap[2][i]); } if (image->colorspace == CMYKColorspace) { /* Correct CMYK levels. */ for (y=0; y < (long) image->rows; y++) { q=GetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) image->columns; x++) { q->red=(Quantum) (MaxRGB-q->red); q->green=(Quantum) (MaxRGB-q->green); q->blue=(Quantum) (MaxRGB-q->blue); indexes[x]=(IndexPacket) (MaxRGB-indexes[x]); q++; } if (SyncImagePixels(image) == MagickFalse) break; } } /* Consume Buffer. */ chunk_size = ((SourceManager *) jpeg_info.src)->source_length; for ( ; chunk_size != 0; chunk_size--) (void) ReadBlobByte(image); /* Free jpeg resources. */ (void) jpeg_finish_decompress(&jpeg_info); jpeg_pixels=(unsigned char *) RelinquishMagickMemory(jpeg_pixels); #else (void) FormatMagickString(message,MaxTextExtent, "AVI compression %s not yet supported",bmp_info.compression); (void) ThrowMagickException(exception,GetMagickModule(), CorruptImageError,message,image->filename); for ( ; chunk_size != 0; chunk_size--) (void) ReadBlobByte(image); continue; #endif } /* Read BMP image */ else { /* Initialize image structure. */ image->columns=avi_info.width; image->rows=avi_info.height; image->depth=8; image->units=PixelsPerCentimeterResolution; image->x_resolution=(double) bmp_info.x_pixels/100.0; image->y_resolution=(double) bmp_info.y_pixels/100.0; status=AllocateImageColormap(image, number_colors != 0 ? number_colors : 256); if (status == MagickFalse) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); if (number_colors != 0) (void) CopyMagickMemory(image->colormap,colormap,(size_t) number_colors*sizeof(PixelPacket)); if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; bytes_per_line=4*((image->columns*bmp_info.bits_per_pixel+31)/32); pixels=(unsigned char *) AcquireMagickMemory((size_t) Max(bytes_per_line,image->columns+256)*image->rows*sizeof(*pixels)); if (pixels == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); (void) ResetMagickMemory(pixels,0,(size_t) Max(bytes_per_line,image->columns+1)*image->rows); if (LocaleCompare(id,"00db") == 0) (void) ReadBlob(image,(size_t) bytes_per_line*image->rows,pixels); else { status=DecodeImage(image,MagickTrue,pixels); if (status == MagickFalse) ThrowReaderException(CorruptImageError, "UnableToRunlengthDecodeImage"); } /* Convert BMP raster image to pixel packets. */ switch ((int) bmp_info.bits_per_pixel) { case 1: { /* Convert bitmap scanline. */ for (y=(long) image->rows-1; y >= 0; y--) { p=pixels+(image->rows-y-1)*bytes_per_line; q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < ((long) image->columns-7); x+=8) { for (bit=0; bit < 8; bit++) { index=(IndexPacket) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); indexes[x+bit]=index; *q++=image->colormap[index]; } p++; } if ((image->columns % 8) != 0) { for (bit=0; bit < (image->columns % 8); bit++) { index=(IndexPacket) (((*p) & (0x80 >> bit)) != 0 ? 0x01 : 0x00); indexes[x+bit]=index; *q++=image->colormap[index]; } p++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(image->rows-y-1,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,image->rows-y-1, image->rows,image->client_data); if (status == MagickFalse) break; } } break; } case 4: { /* Convert PseudoColor scanline. */ for (y=(long) image->rows-1; y >= 0; y--) { p=pixels+(image->rows-y-1)*bytes_per_line; q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < ((long) image->columns-1); x+=2) { index=ConstrainColormapIndex(image,((*p >> 4) & 0xf)); indexes[x]=index; *q++=image->colormap[index]; index=ConstrainColormapIndex(image,(*p & 0xf)); indexes[x+1]=index; *q++=image->colormap[index]; p++; } if ((image->columns % 2) != 0) { index=ConstrainColormapIndex(image,((*p >> 4) & 0xf)); indexes[x]=index; *q++=image->colormap[index]; p++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(image->rows-y-1,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,image->rows-y-1, image->rows,image->client_data); if (status == MagickFalse) break; } } break; } case 8: { /* Convert PseudoColor scanline. */ bytes_per_line=image->columns; for (y=(long) image->rows-1; y >= 0; y--) { p=pixels+(image->rows-y-1)*bytes_per_line; q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) image->columns; x++) { index=ConstrainColormapIndex(image,*p); indexes[x]=index; *q=image->colormap[index]; p++; q++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(image->rows-y-1,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,image->rows-y-1, image->rows,image->client_data); if (status == MagickFalse) break; } } break; } case 16: { unsigned long word; /* Convert PseudoColor scanline. */ bytes_per_line=image->columns << 1; image->storage_class=DirectClass; for (y=(long) image->rows-1; y >= 0; y--) { p=pixels+(image->rows-y-1)*bytes_per_line; q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; for (x=0; x < (long) image->columns; x++) { word=(unsigned long) (*p++); word|=(*p++ << 8); q->red=ScaleCharToQuantum(ScaleColor5to8((word >> 11) & 0x1f)); q->green=ScaleCharToQuantum(ScaleColor6to8((word >> 5) & 0x3f)); q->blue=ScaleCharToQuantum(ScaleColor5to8(word & 0x1f)); q++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(image->rows-y-1,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,image->rows-y-1, image->rows,image->client_data); if (status == MagickFalse) break; } } break; } case 24: case 32: { /* Convert DirectColor scanline. */ image->storage_class=DirectClass; for (y=(long) image->rows-1; y >= 0; y--) { p=pixels+(image->rows-y-1)*bytes_per_line; q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; for (x=0; x < (long) image->columns; x++) { q->blue=ScaleCharToQuantum(*p++); q->green=ScaleCharToQuantum(*p++); q->red=ScaleCharToQuantum(*p++); if (image->matte != MagickFalse) q->opacity=ScaleCharToQuantum(*p++); q++; } if (SyncImagePixels(image) == MagickFalse) break; if (image->previous == (Image *) NULL) if ((image->progress_monitor != (MagickProgressMonitor) NULL) && (QuantumTick(image->rows-y-1,image->rows) != MagickFalse)) { status=image->progress_monitor(LoadImageTag,image->rows-y-1, image->rows,image->client_data); if (status == MagickFalse) break; } } break; } default: ThrowReaderException(CorruptImageError,"ImproperImageHeader"); } pixels=(unsigned char *) RelinquishMagickMemory(pixels); } /* Setup for next image */ break; /* exit early after one image */ if ((unsigned long) image->scene < (avi_info.total_frames-1)) { /* Allocate next image structure. */ AllocateNextImage(image_info,image); if (image->next == (Image *) NULL) { DestroyImageList(image); return((Image *) NULL); } image=SyncNextImageInList(image); if (image->progress_monitor != (MagickProgressMonitor) NULL) { status=image->progress_monitor(LoadImagesTag,TellBlob(image), GetBlobSize(image),image->client_data); if (status == MagickFalse) break;