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swscale: Check for return values of malloc. 

Originally committed as revision 29584 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-08-29 23:02:01 +00:00
parent e48a0966ca
commit 7248797c03
3 changed files with 47 additions and 24 deletions
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3
libswscale/colorspace-test.c
View File

@ -66,6 +66,9 @@ int main(int argc, char **argv)
int failedNum=0;
int passedNum=0;
if (!srcBuffer || !dstBuffer)
return -1;
av_log(NULL, AV_LOG_INFO, "memory corruption test ...\n");
args_parse(argc, argv);
av_log(NULL, AV_LOG_INFO, "CPU capabilities forced to %x\n", cpu_caps);

8
libswscale/swscale-example.c
View File

@ -183,8 +183,9 @@ end:
static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h)
{
const int flags[] = { SWS_FAST_BILINEAR,
SWS_BILINEAR, SWS_BICUBIC,
SWS_X , SWS_POINT , SWS_AREA, 0 };
// SWS_BILINEAR, SWS_BICUBIC,
// SWS_X , SWS_POINT , SWS_AREA, 0 };
0 };
const int srcW = w;
const int srcH = h;
const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
@ -225,6 +226,9 @@ int main(int argc, char **argv)
struct SwsContext *sws;
AVLFG rand;
if (!rgb_data || !data)
return -1;
sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
av_lfg_init(&rand, 1);

60
libswscale/swscale.c
View File

@ -76,6 +76,7 @@ untested special converters
#include "rgb2rgb.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/x86_cpu.h"
#include "libavutil/avutil.h"
#include "libavutil/bswap.h"
unsigned swscale_version(void)
@ -1450,12 +1451,12 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
#endif
// NOTE: the +1 is for the MMX scaler which reads over the end
*filterPos = av_malloc((dstW+1)*sizeof(int16_t));
CHECKED_ALLOC(*filterPos, (dstW+1)*sizeof(int16_t));
if (FFABS(xInc - 0x10000) <10) { // unscaled
int i;
filterSize= 1;
filter= av_mallocz(dstW*sizeof(*filter)*filterSize);
CHECKED_ALLOCZ(filter, dstW*sizeof(*filter)*filterSize);
for (i=0; i<dstW; i++) {
filter[i*filterSize]= fone;
@ -1466,7 +1467,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
int i;
int xDstInSrc;
filterSize= 1;
filter= av_malloc(dstW*sizeof(*filter)*filterSize);
CHECKED_ALLOC(filter, dstW*sizeof(*filter)*filterSize);
xDstInSrc= xInc/2 - 0x8000;
for (i=0; i<dstW; i++) {
@ -1480,7 +1481,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
int i;
int xDstInSrc;
filterSize= 2;
filter= av_malloc(dstW*sizeof(*filter)*filterSize);
CHECKED_ALLOC(filter, dstW*sizeof(*filter)*filterSize);
xDstInSrc= xInc/2 - 0x8000;
for (i=0; i<dstW; i++) {
@ -1519,7 +1520,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
if (filterSize > srcW-2) filterSize=srcW-2;
filter= av_malloc(dstW*sizeof(*filter)*filterSize);
CHECKED_ALLOC(filter, dstW*sizeof(*filter)*filterSize);
xDstInSrc= xInc - 0x10000;
for (i=0; i<dstW; i++) {
@ -1607,7 +1608,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
if (srcFilter) filter2Size+= srcFilter->length - 1;
if (dstFilter) filter2Size+= dstFilter->length - 1;
assert(filter2Size>0);
filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));
CHECKED_ALLOCZ(filter2, filter2Size*dstW*sizeof(*filter2));
for (i=0; i<dstW; i++) {
int j, k;
@ -1690,7 +1691,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
assert(filterSize > 0);
filter= av_malloc(filterSize*dstW*sizeof(*filter));
if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)
goto error;
goto fail;
*outFilterSize= filterSize;
if (flags&SWS_PRINT_INFO)
@ -1737,7 +1738,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
// Note the +1 is for the MMX scaler which reads over the end
/* align at 16 for AltiVec (needed by hScale_altivec_real) */
*outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));
CHECKED_ALLOCZ(*outFilter, *outFilterSize*(dstW+1)*sizeof(int16_t));
/* normalize & store in outFilter */
for (i=0; i<dstW; i++) {
@ -1764,7 +1765,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
}
ret=0;
error:
fail:
av_free(filter);
av_free(filter2);
return ret;
@ -2598,7 +2599,7 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
if (!dstFilter) dstFilter= &dummyFilter;
if (!srcFilter) srcFilter= &dummyFilter;
c= av_mallocz(sizeof(SwsContext));
CHECKED_ALLOCZ(c, sizeof(SwsContext));
c->av_class = &sws_context_class;
c->srcW= srcW;
@ -2837,10 +2838,10 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);
#endif
c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
c->chrMmx2Filter = av_malloc((c->chrDstW /4+8)*sizeof(int16_t));
c->lumMmx2FilterPos= av_malloc((dstW /2/8+8)*sizeof(int32_t));
c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
CHECKED_ALLOCZ(c->lumMmx2Filter , (dstW /8+8)*sizeof(int16_t));
CHECKED_ALLOCZ(c->chrMmx2Filter , (c->chrDstW /4+8)*sizeof(int16_t));
CHECKED_ALLOCZ(c->lumMmx2FilterPos, (dstW /2/8+8)*sizeof(int32_t));
CHECKED_ALLOCZ(c->chrMmx2FilterPos, (c->chrDstW/2/4+8)*sizeof(int32_t));
initMMX2HScaler( dstW, c->lumXInc, c->lumMmx2FilterCode, c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
@ -2872,8 +2873,8 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
srcFilter->chrV, dstFilter->chrV, c->param);
#ifdef COMPILE_ALTIVEC
c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
CHECKED_ALLOC(c->vYCoeffsBank, sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
CHECKED_ALLOC(c->vCCoeffsBank, sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
int j;
@ -2909,19 +2910,28 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
// allocate pixbufs (we use dynamic allocation because otherwise we would need to
// allocate several megabytes to handle all possible cases)
c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
CHECKED_ALLOC(c->lumPixBuf, c->vLumBufSize*2*sizeof(int16_t*));
CHECKED_ALLOC(c->chrPixBuf, c->vChrBufSize*2*sizeof(int16_t*));
if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))
c->alpPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
CHECKED_ALLOCZ(c->alpPixBuf, c->vLumBufSize*2*sizeof(int16_t*));
//Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000)
/* align at 16 bytes for AltiVec */
for (i=0; i<c->vLumBufSize; i++)
c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);
{
CHECKED_ALLOCZ(c->lumPixBuf[i+c->vLumBufSize], VOF+1);
c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize];
}
for (i=0; i<c->vChrBufSize; i++)
c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);
{
CHECKED_ALLOC(c->chrPixBuf[i+c->vChrBufSize], (VOF+1)*2);
c->chrPixBuf[i] = c->chrPixBuf[i+c->vChrBufSize];
}
if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)
for (i=0; i<c->vLumBufSize; i++)
c->alpPixBuf[i]= c->alpPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);
{
CHECKED_ALLOCZ(c->alpPixBuf[i+c->vLumBufSize], VOF+1);
c->alpPixBuf[i] = c->alpPixBuf[i+c->vLumBufSize];
}
//try to avoid drawing green stuff between the right end and the stride end
for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
@ -3045,6 +3055,10 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
c->swScale= getSwsFunc(c);
return c;
fail:
sws_freeContext(c);
return NULL;
}
static void reset_ptr(uint8_t* src[], int format)
@ -3189,6 +3203,8 @@ SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
int verbose)
{
SwsFilter *filter= av_malloc(sizeof(SwsFilter));
if (!filter)
return NULL;
if (lumaGBlur!=0.0) {
filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);