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696 lines
19 KiB
C
696 lines
19 KiB
C
/*
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* Copyright (c) 2018, Mapbox
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* Author: <norman.barker at mapbox.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include "tiffiop.h"
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#ifdef WEBP_SUPPORT
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/*
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* TIFF Library.
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*
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* WEBP Compression Support
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*
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*/
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#include "webp/decode.h"
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#include "webp/encode.h"
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#include <stdio.h>
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#define LSTATE_INIT_DECODE 0x01
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#define LSTATE_INIT_ENCODE 0x02
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/*
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* State block for each open TIFF
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* file using WEBP compression/decompression.
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*/
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typedef struct {
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uint16 nSamples; /* number of samples per pixel */
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int lossless; /* lossy/lossless compression */
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int quality_level; /* compression level */
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WebPPicture sPicture; /* WebP Picture */
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WebPConfig sEncoderConfig; /* WebP encoder config */
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uint8* pBuffer; /* buffer to hold raw data on encoding */
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unsigned int buffer_offset; /* current offset into the buffer */
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unsigned int buffer_size;
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WebPIDecoder* psDecoder; /* WebPIDecoder */
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WebPDecBuffer sDecBuffer; /* Decoder buffer */
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int last_y; /* Last row decoded */
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int state; /* state flags */
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TIFFVGetMethod vgetparent; /* super-class method */
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TIFFVSetMethod vsetparent; /* super-class method */
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} WebPState;
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#define LState(tif) ((WebPState*) (tif)->tif_data)
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#define DecoderState(tif) LState(tif)
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#define EncoderState(tif) LState(tif)
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static int TWebPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
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static int TWebPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s);
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static
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int TWebPDatasetWriter(const uint8_t* data, size_t data_size,
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const WebPPicture* const picture)
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{
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static const char module[] = "TWebPDatasetWriter";
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TIFF* tif = (TIFF*)(picture->custom_ptr);
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if ( (tif->tif_rawcc + (tmsize_t)data_size) > tif->tif_rawdatasize ) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Buffer too small by " TIFF_SIZE_FORMAT " bytes.",
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(size_t) (tif->tif_rawcc + data_size - tif->tif_rawdatasize));
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return 0;
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} else {
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_TIFFmemcpy(tif->tif_rawcp, data, data_size);
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tif->tif_rawcc += data_size;
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tif->tif_rawcp += data_size;
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return 1;
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}
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}
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/*
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* Encode a chunk of pixels.
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*/
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static int
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TWebPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
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{
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static const char module[] = "TWebPEncode";
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WebPState *sp = EncoderState(tif);
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(void) s;
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assert(sp != NULL);
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assert(sp->state == LSTATE_INIT_ENCODE);
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if( (uint64)sp->buffer_offset +
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(uint64)cc > sp->buffer_size )
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{
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TIFFErrorExt(tif->tif_clientdata, module,
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"Too many bytes to be written");
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return 0;
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}
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memcpy(sp->pBuffer + sp->buffer_offset,
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bp, cc);
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sp->buffer_offset += (unsigned)cc;
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return 1;
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}
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static int
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TWebPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
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{
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static const char module[] = "WebPDecode";
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VP8StatusCode status = VP8_STATUS_OK;
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WebPState *sp = DecoderState(tif);
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(void) s;
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assert(sp != NULL);
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assert(sp->state == LSTATE_INIT_DECODE);
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if (occ % sp->sDecBuffer.u.RGBA.stride)
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{
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TIFFErrorExt(tif->tif_clientdata, module,
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"Fractional scanlines cannot be read");
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return 0;
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}
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status = WebPIAppend(sp->psDecoder, tif->tif_rawcp, tif->tif_rawcc);
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if (status != VP8_STATUS_OK && status != VP8_STATUS_SUSPENDED) {
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if (status == VP8_STATUS_INVALID_PARAM) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Invalid parameter used.");
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} else if (status == VP8_STATUS_OUT_OF_MEMORY) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Out of memory.");
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} else {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Unrecognized error.");
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}
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return 0;
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} else {
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int current_y, stride;
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uint8_t* buf;
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/* Returns the RGB/A image decoded so far */
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buf = WebPIDecGetRGB(sp->psDecoder, ¤t_y, NULL, NULL, &stride);
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if ((buf != NULL) &&
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(occ <= stride * (current_y - sp->last_y))) {
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memcpy(op,
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buf + (sp->last_y * stride),
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occ);
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tif->tif_rawcp += tif->tif_rawcc;
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tif->tif_rawcc = 0;
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sp->last_y += occ / sp->sDecBuffer.u.RGBA.stride;
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return 1;
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} else {
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TIFFErrorExt(tif->tif_clientdata, module, "Unable to decode WebP data.");
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return 0;
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}
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}
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}
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static int
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TWebPFixupTags(TIFF* tif)
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{
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(void) tif;
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if (tif->tif_dir.td_planarconfig != PLANARCONFIG_CONTIG) {
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static const char module[] = "TWebPFixupTags";
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TIFFErrorExt(tif->tif_clientdata, module,
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"TIFF WEBP requires data to be stored contiguously in RGB e.g. RGBRGBRGB "
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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"or RGBARGBARGBA"
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#endif
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);
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return 0;
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}
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return 1;
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}
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static int
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TWebPSetupDecode(TIFF* tif)
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{
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static const char module[] = "WebPSetupDecode";
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uint16 nBitsPerSample = tif->tif_dir.td_bitspersample;
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uint16 sampleFormat = tif->tif_dir.td_sampleformat;
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WebPState* sp = DecoderState(tif);
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assert(sp != NULL);
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sp->nSamples = tif->tif_dir.td_samplesperpixel;
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/* check band count */
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if ( sp->nSamples != 3
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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&& sp->nSamples != 4
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#endif
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)
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{
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TIFFErrorExt(tif->tif_clientdata, module,
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"WEBP driver doesn't support %d bands. Must be 3 (RGB) "
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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"or 4 (RGBA) "
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#endif
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"bands.",
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sp->nSamples );
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return 0;
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}
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/* check bits per sample and data type */
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if ((nBitsPerSample != 8) && (sampleFormat != 1)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"WEBP driver requires 8 bit unsigned data");
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return 0;
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}
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/* if we were last encoding, terminate this mode */
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if (sp->state & LSTATE_INIT_ENCODE) {
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WebPPictureFree(&sp->sPicture);
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if (sp->pBuffer != NULL) {
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_TIFFfree(sp->pBuffer);
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sp->pBuffer = NULL;
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}
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sp->buffer_offset = 0;
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sp->state = 0;
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}
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sp->state |= LSTATE_INIT_DECODE;
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return 1;
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}
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/*
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* Setup state for decoding a strip.
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*/
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static int
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TWebPPreDecode(TIFF* tif, uint16 s)
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{
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static const char module[] = "TWebPPreDecode";
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uint32 segment_width, segment_height;
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WebPState* sp = DecoderState(tif);
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TIFFDirectory* td = &tif->tif_dir;
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(void) s;
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assert(sp != NULL);
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if (isTiled(tif)) {
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segment_width = td->td_tilewidth;
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segment_height = td->td_tilelength;
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} else {
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segment_width = td->td_imagewidth;
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segment_height = td->td_imagelength - tif->tif_row;
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if (segment_height > td->td_rowsperstrip)
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segment_height = td->td_rowsperstrip;
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}
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if( (sp->state & LSTATE_INIT_DECODE) == 0 )
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tif->tif_setupdecode(tif);
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if (sp->psDecoder != NULL) {
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WebPIDelete(sp->psDecoder);
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WebPFreeDecBuffer(&sp->sDecBuffer);
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sp->psDecoder = NULL;
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}
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sp->last_y = 0;
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WebPInitDecBuffer(&sp->sDecBuffer);
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sp->sDecBuffer.is_external_memory = 0;
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sp->sDecBuffer.width = segment_width;
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sp->sDecBuffer.height = segment_height;
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sp->sDecBuffer.u.RGBA.stride = segment_width * sp->nSamples;
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sp->sDecBuffer.u.RGBA.size = segment_width * sp->nSamples * segment_height;
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if (sp->nSamples > 3) {
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sp->sDecBuffer.colorspace = MODE_RGBA;
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} else {
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sp->sDecBuffer.colorspace = MODE_RGB;
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}
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sp->psDecoder = WebPINewDecoder(&sp->sDecBuffer);
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if (sp->psDecoder == NULL) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Unable to allocate WebP decoder.");
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return 0;
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}
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return 1;
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}
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static int
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TWebPSetupEncode(TIFF* tif)
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{
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static const char module[] = "WebPSetupEncode";
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uint16 nBitsPerSample = tif->tif_dir.td_bitspersample;
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uint16 sampleFormat = tif->tif_dir.td_sampleformat;
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WebPState* sp = EncoderState(tif);
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assert(sp != NULL);
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sp->nSamples = tif->tif_dir.td_samplesperpixel;
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/* check band count */
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if ( sp->nSamples != 3
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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&& sp->nSamples != 4
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#endif
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)
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{
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TIFFErrorExt(tif->tif_clientdata, module,
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"WEBP driver doesn't support %d bands. Must be 3 (RGB) "
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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"or 4 (RGBA) "
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#endif
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"bands.",
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sp->nSamples );
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return 0;
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}
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/* check bits per sample and data type */
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if ((nBitsPerSample != 8) && (sampleFormat != 1)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"WEBP driver requires 8 bit unsigned data");
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return 0;
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}
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if (sp->state & LSTATE_INIT_DECODE) {
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WebPIDelete(sp->psDecoder);
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WebPFreeDecBuffer(&sp->sDecBuffer);
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sp->psDecoder = NULL;
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sp->last_y = 0;
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sp->state = 0;
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}
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sp->state |= LSTATE_INIT_ENCODE;
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if (!WebPPictureInit(&sp->sPicture)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error initializing WebP picture.");
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return 0;
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}
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if (!WebPConfigInitInternal(&sp->sEncoderConfig, WEBP_PRESET_DEFAULT,
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sp->quality_level,
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WEBP_ENCODER_ABI_VERSION)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error creating WebP encoder configuration.");
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return 0;
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}
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// WebPConfigInitInternal above sets lossless to false
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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sp->sEncoderConfig.lossless = sp->lossless;
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if (sp->lossless) {
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sp->sPicture.use_argb = 1;
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}
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#endif
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if (!WebPValidateConfig(&sp->sEncoderConfig)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error with WebP encoder configuration.");
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return 0;
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}
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return 1;
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}
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/*
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* Reset encoding state at the start of a strip.
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*/
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static int
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TWebPPreEncode(TIFF* tif, uint16 s)
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{
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static const char module[] = "TWebPPreEncode";
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uint32 segment_width, segment_height;
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WebPState *sp = EncoderState(tif);
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TIFFDirectory* td = &tif->tif_dir;
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(void) s;
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assert(sp != NULL);
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if( sp->state != LSTATE_INIT_ENCODE )
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tif->tif_setupencode(tif);
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/*
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* Set encoding parameters for this strip/tile.
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*/
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if (isTiled(tif)) {
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segment_width = td->td_tilewidth;
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segment_height = td->td_tilelength;
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} else {
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segment_width = td->td_imagewidth;
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segment_height = td->td_imagelength - tif->tif_row;
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if (segment_height > td->td_rowsperstrip)
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segment_height = td->td_rowsperstrip;
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}
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if( segment_width > 16383 || segment_height > 16383 ) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"WEBP maximum image dimensions are 16383 x 16383.");
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return 0;
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}
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/* set up buffer for raw data */
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/* given above check and that nSamples <= 4, buffer_size is <= 1 GB */
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sp->buffer_size = segment_width * segment_height * sp->nSamples;
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if (sp->pBuffer != NULL) {
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_TIFFfree(sp->pBuffer);
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sp->pBuffer = NULL;
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}
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sp->pBuffer = _TIFFmalloc(sp->buffer_size);
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if( !sp->pBuffer) {
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TIFFErrorExt(tif->tif_clientdata, module, "Cannot allocate buffer");
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return 0;
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}
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sp->buffer_offset = 0;
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sp->sPicture.width = segment_width;
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sp->sPicture.height = segment_height;
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sp->sPicture.writer = TWebPDatasetWriter;
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sp->sPicture.custom_ptr = tif;
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return 1;
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}
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/*
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* Finish off an encoded strip by flushing it.
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*/
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static int
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TWebPPostEncode(TIFF* tif)
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{
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static const char module[] = "WebPPostEncode";
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int64_t stride;
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WebPState *sp = EncoderState(tif);
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assert(sp != NULL);
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assert(sp->state == LSTATE_INIT_ENCODE);
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stride = (int64_t)sp->sPicture.width * sp->nSamples;
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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if (sp->nSamples == 4) {
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if (!WebPPictureImportRGBA(&sp->sPicture, sp->pBuffer, (int)stride)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"WebPPictureImportRGBA() failed" );
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return 0;
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}
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}
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else
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#endif
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if (!WebPPictureImportRGB(&sp->sPicture, sp->pBuffer, (int)stride)) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"WebPPictureImportRGB() failed");
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return 0;
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}
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if (!WebPEncode(&sp->sEncoderConfig, &sp->sPicture)) {
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#if WEBP_ENCODER_ABI_VERSION >= 0x0100
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const char* pszErrorMsg = NULL;
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switch(sp->sPicture.error_code) {
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case VP8_ENC_ERROR_OUT_OF_MEMORY:
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pszErrorMsg = "Out of memory"; break;
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case VP8_ENC_ERROR_BITSTREAM_OUT_OF_MEMORY:
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pszErrorMsg = "Out of memory while flushing bits"; break;
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case VP8_ENC_ERROR_NULL_PARAMETER:
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pszErrorMsg = "A pointer parameter is NULL"; break;
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case VP8_ENC_ERROR_INVALID_CONFIGURATION:
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pszErrorMsg = "Configuration is invalid"; break;
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case VP8_ENC_ERROR_BAD_DIMENSION:
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pszErrorMsg = "Picture has invalid width/height"; break;
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case VP8_ENC_ERROR_PARTITION0_OVERFLOW:
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pszErrorMsg = "Partition is bigger than 512k. Try using less "
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"SEGMENTS, or increase PARTITION_LIMIT value";
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break;
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case VP8_ENC_ERROR_PARTITION_OVERFLOW:
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pszErrorMsg = "Partition is bigger than 16M";
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break;
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case VP8_ENC_ERROR_BAD_WRITE:
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pszErrorMsg = "Error while fludshing bytes"; break;
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case VP8_ENC_ERROR_FILE_TOO_BIG:
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pszErrorMsg = "File is bigger than 4G"; break;
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case VP8_ENC_ERROR_USER_ABORT:
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pszErrorMsg = "User interrupted";
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break;
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default:
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TIFFErrorExt(tif->tif_clientdata, module,
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"WebPEncode returned an unknown error code: %d",
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sp->sPicture.error_code);
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pszErrorMsg = "Unknown WebP error type.";
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break;
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}
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TIFFErrorExt(tif->tif_clientdata, module,
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"WebPEncode() failed : %s", pszErrorMsg);
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#else
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error in WebPEncode()");
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#endif
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return 0;
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|
}
|
|
|
|
sp->sPicture.custom_ptr = NULL;
|
|
|
|
if (!TIFFFlushData1(tif))
|
|
{
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"Error flushing TIFF WebP encoder.");
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
TWebPCleanup(TIFF* tif)
|
|
{
|
|
WebPState* sp = LState(tif);
|
|
|
|
assert(sp != 0);
|
|
|
|
tif->tif_tagmethods.vgetfield = sp->vgetparent;
|
|
tif->tif_tagmethods.vsetfield = sp->vsetparent;
|
|
|
|
if (sp->state & LSTATE_INIT_ENCODE) {
|
|
WebPPictureFree(&sp->sPicture);
|
|
}
|
|
|
|
if (sp->psDecoder != NULL) {
|
|
WebPIDelete(sp->psDecoder);
|
|
WebPFreeDecBuffer(&sp->sDecBuffer);
|
|
sp->psDecoder = NULL;
|
|
sp->last_y = 0;
|
|
}
|
|
|
|
if (sp->pBuffer != NULL) {
|
|
_TIFFfree(sp->pBuffer);
|
|
sp->pBuffer = NULL;
|
|
}
|
|
|
|
_TIFFfree(tif->tif_data);
|
|
tif->tif_data = NULL;
|
|
|
|
_TIFFSetDefaultCompressionState(tif);
|
|
}
|
|
|
|
static int
|
|
TWebPVSetField(TIFF* tif, uint32 tag, va_list ap)
|
|
{
|
|
static const char module[] = "WebPVSetField";
|
|
WebPState* sp = LState(tif);
|
|
|
|
switch (tag) {
|
|
case TIFFTAG_WEBP_LEVEL:
|
|
sp->quality_level = (int) va_arg(ap, int);
|
|
if( sp->quality_level <= 0 ||
|
|
sp->quality_level > 100.0f ) {
|
|
TIFFWarningExt(tif->tif_clientdata, module,
|
|
"WEBP_LEVEL should be between 1 and 100");
|
|
}
|
|
return 1;
|
|
case TIFFTAG_WEBP_LOSSLESS:
|
|
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
|
|
sp->lossless = va_arg(ap, int);
|
|
if (sp->lossless){
|
|
sp->quality_level = 100.0f;
|
|
}
|
|
return 1;
|
|
#else
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"Need to upgrade WEBP driver, this version doesn't support "
|
|
"lossless compression.");
|
|
return 0;
|
|
#endif
|
|
default:
|
|
return (*sp->vsetparent)(tif, tag, ap);
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
static int
|
|
TWebPVGetField(TIFF* tif, uint32 tag, va_list ap)
|
|
{
|
|
WebPState* sp = LState(tif);
|
|
|
|
switch (tag) {
|
|
case TIFFTAG_WEBP_LEVEL:
|
|
*va_arg(ap, int*) = sp->quality_level;
|
|
break;
|
|
case TIFFTAG_WEBP_LOSSLESS:
|
|
*va_arg(ap, int*) = sp->lossless;
|
|
break;
|
|
default:
|
|
return (*sp->vgetparent)(tif, tag, ap);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const TIFFField TWebPFields[] = {
|
|
{ TIFFTAG_WEBP_LEVEL, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT,
|
|
TIFF_SETGET_UNDEFINED,
|
|
FIELD_PSEUDO, TRUE, FALSE, "WEBP quality", NULL },
|
|
{ TIFFTAG_WEBP_LOSSLESS, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT,
|
|
TIFF_SETGET_UNDEFINED,
|
|
FIELD_PSEUDO, TRUE, FALSE, "WEBP lossless/lossy", NULL
|
|
},
|
|
};
|
|
|
|
int
|
|
TIFFInitWebP(TIFF* tif, int scheme)
|
|
{
|
|
static const char module[] = "TIFFInitWebP";
|
|
WebPState* sp;
|
|
|
|
assert( scheme == COMPRESSION_WEBP );
|
|
|
|
/*
|
|
* Merge codec-specific tag information.
|
|
*/
|
|
if ( !_TIFFMergeFields(tif, TWebPFields, TIFFArrayCount(TWebPFields)) ) {
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"Merging WebP codec-specific tags failed");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Allocate state block so tag methods have storage to record values.
|
|
*/
|
|
tif->tif_data = (uint8*) _TIFFmalloc(sizeof(WebPState));
|
|
if (tif->tif_data == NULL)
|
|
goto bad;
|
|
sp = LState(tif);
|
|
|
|
/*
|
|
* Override parent get/set field methods.
|
|
*/
|
|
sp->vgetparent = tif->tif_tagmethods.vgetfield;
|
|
tif->tif_tagmethods.vgetfield = TWebPVGetField; /* hook for codec tags */
|
|
sp->vsetparent = tif->tif_tagmethods.vsetfield;
|
|
tif->tif_tagmethods.vsetfield = TWebPVSetField; /* hook for codec tags */
|
|
|
|
/* Default values for codec-specific fields */
|
|
sp->quality_level = 75.0f; /* default comp. level */
|
|
sp->lossless = 0; /* default to false */
|
|
sp->state = 0;
|
|
sp->nSamples = 0;
|
|
sp->psDecoder = NULL;
|
|
sp->last_y = 0;
|
|
|
|
sp->buffer_offset = 0;
|
|
sp->pBuffer = NULL;
|
|
|
|
/*
|
|
* Install codec methods.
|
|
* Notes:
|
|
* encoderow is not supported
|
|
*/
|
|
tif->tif_fixuptags = TWebPFixupTags;
|
|
tif->tif_setupdecode = TWebPSetupDecode;
|
|
tif->tif_predecode = TWebPPreDecode;
|
|
tif->tif_decoderow = TWebPDecode;
|
|
tif->tif_decodestrip = TWebPDecode;
|
|
tif->tif_decodetile = TWebPDecode;
|
|
tif->tif_setupencode = TWebPSetupEncode;
|
|
tif->tif_preencode = TWebPPreEncode;
|
|
tif->tif_postencode = TWebPPostEncode;
|
|
tif->tif_encoderow = TWebPEncode;
|
|
tif->tif_encodestrip = TWebPEncode;
|
|
tif->tif_encodetile = TWebPEncode;
|
|
tif->tif_cleanup = TWebPCleanup;
|
|
|
|
return 1;
|
|
bad:
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
|
"No space for WebP state block");
|
|
return 0;
|
|
}
|
|
|
|
#endif /* WEBP_SUPPORT */
|