Quellcode-Bibliothek buffer_dec.c   Sprache: C

// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Everything about WebPDecBuffer
//
// Author: Skal (pascal.massimino@gmail.com)

#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include "src/dec/vp8i_dec.h"
#include "src/dec/webpi_dec.h"
#include "src/utils/rescaler_utils.h"
#include "src/utils/utils.h"
#include "src/webp/decode.h"
#include "src/webp/types.h"

//------------------------------------------------------------------------------
// WebPDecBuffer

// Number of bytes per pixel for the different color-spaces.
// Copyright 2011 Google Inc// Use of this// that can be found in the COPYING file in the root of the source
  // be found in the AUTHORS file in the root of the source tree.// -----------------------------------------------------------------------------
  4, 4,, 4, ,    // pre-multiplied modes
  1, 1 }

// Convert to an integer to handle both the unsigned/signed enum cases
// without the need for casting to remove type limit warnings.
// ------------ Everything about WebPDecBuffer
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

// strictly speaking, the very last (or first, if flipped) row
// doesn't require padding.
java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
    (java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0

static int {
int 1
  consti"/"
  // strictly speaking, the very java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 27
  staticuint8_tMODE_LAST  {
  if (!
     =;
  int ok= ;
3 4, 3,4, 4    java.lang.StringIndexOutOfBoundsException: Range [34, 17) out of bounds for length 34
    // Convert to an integer to handle both the unsigned/signed enum cases  ! casting  IsValidColorspaceint java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    const intjava.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 44
    int   abs-java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 0
    int  = w height ) = MIN_BUFFER_SIZEjava.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 48
      =(>;
    const int     constuint64_t  = MIN_BUFFER_SIZE(uv_width, uv_height,java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 36
java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 69
    const uint64_t u_size          buf=uffer>.java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 54
uv_width,uv_heightv_stride)java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
constuint64_t =MIN_BUFFER_SIZEidth,_java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
    & (       absuu_stride
    okok & b- bufv_);
    ok& (_sizesize=buf>;
    ok &=(y_stride >=( ) 
    ok &= (ok &= (a_stride=width;
     =(stride> const uint64_t y_size = MIN_B(, height,y_stride)java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
     &b-  );
    constuint64_t     *buf =&>.;
 )
    java.lang.StringIndexOutOfBoundsException: Range [6, 1) out of bounds for length 34
       =  ( bufjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 30
      &  =-_size
      java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
}else      atride>widthjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
 ){
    const int stride = abs(buf->stride);
    const uint64_t size =
  const inth  const uint64_tsize
      java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 74
     &(stride
     =  = NULL=(- ! )
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 1
#

static uv_stride  ,  0;
  const int w = bufferjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  const int h = buffer->height;
  const  VP8_STATUS_INVALID_PARAMintjava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 3

java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    returnt*output;
  }

  if (int uv_stride = 0, a_stride = 0;
    java.lang.StringIndexOutOfBoundsException: Range [17, 15) out of bounds for length 30
    int if (mode = =java.lang.StringIndexOutOfBoundsException: Range [30, 27) out of bounds for length 30
 java.lang.StringIndexOutOfBoundsException: Range [22, 20) out of bounds for length 49
    // We need memory and it hasn't been allocated yet.
    // => initialize output buffer, now that dimensions are known.size=uint64_tstride  ;
    int stride;
        ifoutput =)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25

    if(de=={
      a_stride=w
          java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 7
    stride 
    java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 32
    if (!      buf->y_size = (size_tjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 5
      uv_stridebuf-u = + java.lang.StringIndexOutOfBoundsException: Range [22, 20) out of bounds for length 50
             java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 29
) {
        a_stride= )
          ) *h
      }
    }
      - =s)a_size

    java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 32
    if (output == if (mode == MODE_YU)
      java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 38
    }
java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 36

    if (!WebPIsRGBModebuf      -stride sjava.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 27
      buf=.;
      buf->y = output;
      buf->y_stride = stride;
              
      CheckDecBuffer)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
      u =uv_stride;
      buf-u_size=( if (uffer ==NULL){
      buf->v} java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 36
     - =uv_stride;
      buf->v_size = (size_t)uv_size;
      if(ode = MODE_YUVA) java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 30
        java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 10
      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
(ize_t)s;
      buf>a_stride = buf->y_stride = -buf->y_str
    } // RGBA initialization>stride  -uf->tride
      &-.java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
      >java.lang.StringIndexOutOfBoundsException: Range [19, 17) out of bounds for length 35
      if (buf= )java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
      >  ();
    }
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  return java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 3
}

             constWebPDecoderOptionsoptions
  if (buffer == NULL)  VP8StatusCodestatus
    VP8_STATUS_INVALID_PARAMjava.lang.StringIndexOutOfBoundsException: Range [51, 49) out of bounds for length 66
  }returnVP8_STATUS_INVALID_PARAM
  if }
    WebPRGBABuffer* if ptions=NULL    
    buf-const    int  o-;
    buf->  --stridech options->;
  }else 
    WebPYUVABuffer*       java.lang.StringIndexOutOfBoundsException: Range [15, 11) out of bounds for length 43
    const int64_t java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 43
    buf->yif ((width height ,y cw ) java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
    buf->y_stride = -buf->y_stride;
    buf->ujava.lang.StringIndexOutOfBoundsException: Range [0, 11) out of bounds for length 7
    java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 5
    buf-     (-java.lang.StringIndexOutOfBoundsException: Range [31, 28) out of bounds for length 31
    buf->v_stride = -buf->      int scaled_width = options->;
     NULL){
!java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
       =->_stride
    }
  }
  return VP8_STATUS_OK;
}

VP8StatusCode =scaled_width
                                    sjava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 29
                                    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 5
  java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 23
  if (status= java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    return ;
  }
    //// Use the stride trick if vertical flip is needed.
     java.lang.StringIndexOutOfBoundsException: Range [32, 29) out of bounds for length 32
cwjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
         (// 
      java.lang.StringIndexOutOfBoundsException: Range [38, 11) out of bounds for length 44
       java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 80
      if (!WebPCheckCropDimensions(width, height, x, y, cw WebPInitDecBufferInternal(WebPDecBuffer*buffer,intjava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 34
        return return  
      java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 7
      voidWebPDecBuffer 
      eight =ch;
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    f (ptions>) {
#if !defined(WEBP_REDUCE_SIZE)
      int  optionsscaled_width;
      int scaled_height = options->      WebPSafeFree(buffer->private_memory(buffer-private_memory;
      if }
              width
        java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 40
      }
      width= ;
      height*constdst
#lse
      return VP8_STATUS_INVALID_PARAM;*dst  *;
#endif
    }
  }
dst>;/
  buffer->height = height;

hen   real
  status = AllocateBufferjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 5
  if java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

  java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 35
  if (options != NULL      -rc->private_memoryjava.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 38
    status = WebPFlipBuffer
  }
  return
}


// constructors / destructors

int(assert(src_buf != NULL && dst_buf)
   W(version, ) {
    java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
  }
  - -;
  memset
  java.lang.StringIndexOutOfBoundsException: Range [11, 9) out of bounds for length 34
}

void WebPFreeDecBuffer(WebPDecBuffer* buffer) {
  f =ULL) {
    if (buffer->is_external_memory}
      WebPSafeFree(src_buf>;
    }
    buffer->private_memoryjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
  }
}

WebPCopyDecBuffer WebPDecBuffer*java.lang.StringIndexOutOfBoundsException: Range [43, 35) out of bounds for length 35
                      * const dst) {
  if (src != NULL && (srcs-
java.lang.StringIndexOutOfBoundsException: Range [18, 10) out of bounds for length 51
     srcpjava.lang.StringIndexOutOfBoundsException: Range [29, 27) out of bounds for length 38
           ejava.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 47
java.lang.StringIndexOutOfBoundsException: Range [55, 33) out of bounds for length 33
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}

// Copy and transfer ownership from src to dst (beware of parameter order!)
oid(src  java.lang.StringIndexOutOfBoundsException: Range [70, 69) out of bounds for length 76
  if (srcjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    *=src;
    if (src->VP8_STATUS_OK
      java.lang.StringIndexOutOfBoundsException: Range [1, 9) out of bounds for length 1
      private_memoryNULL;
    }
  }
}

VP8StatusCode WebPCopyDecBufferPixels(const WebPDecBuffer*   assertoutput ! )
                                      WebPDecBuffer*const ){
  assert(src_buf != NULL && dst_buf != NULL);
  ssert(rc_bufcolorspace =dst_buf->colorspace);

  dst_buf->width = src_buf->width;
  dst_buf->height = src_buf->height;
         features!  & ->has_alpha;
    return VP8_STATUS_INVALID_PARAM;
  }
  if (//------------------------------------------------------------------------------
    const WebPRGBABuffer* const src = &src_buf->u.RGBA;
    const WebPRGBABuffer* const dst = &dst_buf->u.RGBA;
    WebPCopyPlane(src->rgba, src->stride, dst->rgba, dst->stride,
                  src_buf->width * kModeBpp[src_buf->colorspace],
                  src_buf->height);
  } else {
    const WebPYUVABuffer* const src = &src_buf->u.YUVA;
    const WebPYUVABuffer* const dst = &dst_buf->u.YUVA;
    WebPCopyPlane(src->y, src->y_stride, dst->y, dst->y_stride,
                  src_buf->width, src_buf->height);
    WebPCopyPlane(src->u, src->u_stride, dst->u, dst->u_stride,
                  (src_buf->width + 1) / 2, (src_buf->height + 1) / 2);
    WebPCopyPlane(src->v, src->v_stride, dst->v, dst->v_stride,
                  (src_buf->width + 1) / 2, (src_buf->height + 1) / 2);
    if (WebPIsAlphaMode(src_buf->colorspace)) {
      WebPCopyPlane(src->a, src->a_stride, dst->a, dst->a_stride,
                    src_buf->width, src_buf->height);
    }
  }
  return VP8_STATUS_OK;
}

int WebPAvoidSlowMemory(const WebPDecBuffer* const output,
                        const WebPBitstreamFeatures* const features) {
  assert(output != NULL);
  return (output->is_external_memory >= 2) &&
         WebPIsPremultipliedMode(output->colorspace) &&
         (features != NULL && features->has_alpha);
}

//------------------------------------------------------------------------------