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yadif: redesign first and last 2 lines handling. 

The previous code dependent on the input buffer matching the
buffer that has been provided by yadifs get_buffer.
The API does in now way gurantee this though its often true.
This fixes some out of array reads.
The regression test checksums change due to "out of picture" values
being initialized differently.
There should be no visual difference in the filters output

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
tags/n1.0
Michael Niedermayer 13 years ago
parent
9f088a1ed4
commit
2f7e8dcf45
4 changed files with 64 additions and 36 deletions
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  1. +27
    -1
      libavfilter/vf_yadif.c
  2. +2
    -0
      libavfilter/yadif.h
  3. +13
    -13
      tests/ref/fate/filter-yadif-mode0
  4. +22
    -22
      tests/ref/fate/filter-yadif-mode1

+ 27
- 1
libavfilter/vf_yadif.c View File

@@ -112,6 +112,7 @@ static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
int w = dstpic->video->w;
int h = dstpic->video->h;
int refs = yadif->cur->linesize[i];
int absrefs = FFABS(refs);
int df = (yadif->csp->comp[i].depth_minus1 + 8) / 8;

if (i == 1 || i == 2) {
@@ -120,6 +121,12 @@ static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
h >>= yadif->csp->log2_chroma_h;
}

if(yadif->temp_line_size < absrefs) {
av_free(yadif->temp_line);
yadif->temp_line = av_mallocz(2*64 + 5*absrefs);
yadif->temp_line_size = absrefs;
}

for (y = 0; y < h; y++) {
if ((y ^ parity) & 1) {
uint8_t *prev = &yadif->prev->data[i][y*refs];
@@ -127,7 +134,25 @@ static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
uint8_t *next = &yadif->next->data[i][y*refs];
uint8_t *dst = &dstpic->data[i][y*dstpic->linesize[i]];
int mode = y==1 || y+2==h ? 2 : yadif->mode;
yadif->filter_line(dst, prev, cur, next, w, y+1<h ? refs : -refs, y ? -refs : refs, parity ^ tff, mode);
int prefs = y+1<h ? refs : -refs;
int mrefs = y ?-refs : refs;

if(y<=1 || y+2>=h) {
int j;
uint8_t *tmp = yadif->temp_line + 64 + 2*absrefs;
if(mode<2)
memcpy(tmp+2*mrefs, cur+2*mrefs, w*df);
memcpy(tmp+mrefs, cur+mrefs, w*df);
memcpy(tmp , cur , w*df);
if(prefs != mrefs) {
memcpy(tmp+prefs, cur+prefs, w*df);
if(mode<2)
memcpy(tmp+2*prefs, cur+2*prefs, w*df);
}
cur = tmp;
}

yadif->filter_line(dst, prev, cur, next, w, prefs, mrefs, parity ^ tff, mode);
} else {
memcpy(&dstpic->data[i][y*dstpic->linesize[i]],
&yadif->cur->data[i][y*refs], w*df);
@@ -343,6 +368,7 @@ static av_cold void uninit(AVFilterContext *ctx)
if (yadif->prev) avfilter_unref_bufferp(&yadif->prev);
if (yadif->cur ) avfilter_unref_bufferp(&yadif->cur );
if (yadif->next) avfilter_unref_bufferp(&yadif->next);
av_freep(&yadif->temp_line); yadif->temp_line_size = 0;
}

static int query_formats(AVFilterContext *ctx)


+ 2
- 0
libavfilter/yadif.h View File

@@ -56,6 +56,8 @@ typedef struct {

const AVPixFmtDescriptor *csp;
int eof;
uint8_t *temp_line;
int temp_line_size;
} YADIFContext;

void ff_yadif_init_x86(YADIFContext *yadif);


+ 13
- 13
tests/ref/fate/filter-yadif-mode0 View File

@@ -2,31 +2,31 @@
0, 9, 9, 1, 622080, 0x4440caef
0, 10, 10, 1, 622080, 0xce67e69d
0, 11, 11, 1, 622080, 0x1dbdc653
0, 12, 12, 1, 622080, 0x82c591d1
0, 12, 12, 1, 622080, 0x55c791d0
0, 13, 13, 1, 622080, 0x8193740b
0, 14, 14, 1, 622080, 0xcb219711
0, 15, 15, 1, 622080, 0x1870783b
0, 14, 14, 1, 622080, 0x7125970f
0, 15, 15, 1, 622080, 0xeb63783a
0, 16, 16, 1, 622080, 0x7080590b
0, 17, 17, 1, 622080, 0x6df4175d
0, 18, 18, 1, 622080, 0x6b530e95
0, 17, 17, 1, 622080, 0x13f8175b
0, 18, 18, 1, 622080, 0x3e550e94
0, 19, 19, 1, 622080, 0x7f9d66f7
0, 20, 20, 1, 622080, 0x338cda81
0, 21, 21, 1, 622080, 0xb13797f8
0, 22, 22, 1, 622080, 0xb51e7ca4
0, 20, 20, 1, 622080, 0x068eda80
0, 21, 21, 1, 622080, 0x843997f7
0, 22, 22, 1, 622080, 0x88207ca3
0, 23, 23, 1, 622080, 0x353eed75
0, 24, 24, 1, 622080, 0xf93e92b0
0, 25, 25, 1, 622080, 0xd0811094
0, 26, 26, 1, 622080, 0xb04a3141
0, 27, 27, 1, 622080, 0x4ab84909
0, 28, 28, 1, 622080, 0xa0fcb8fb
0, 29, 29, 1, 622080, 0x9003aebb
0, 28, 28, 1, 622080, 0x4700b8f9
0, 29, 29, 1, 622080, 0x6305aeba
0, 30, 30, 1, 622080, 0x153faa3e
0, 31, 31, 1, 622080, 0xae724063
0, 32, 32, 1, 622080, 0xeb4de77a
0, 32, 32, 1, 622080, 0xbe4fe779
0, 33, 33, 1, 622080, 0x209ed8c7
0, 34, 34, 1, 622080, 0xe2bbac96
0, 35, 35, 1, 622080, 0xe945441e
0, 36, 36, 1, 622080, 0x8f8cbd5f
0, 37, 37, 1, 622080, 0xbc3cf717
0, 36, 36, 1, 622080, 0x3590bd5d
0, 37, 37, 1, 622080, 0x8f3ef716
0, 38, 38, 1, 622080, 0x0109f125
0, 39, 39, 1, 622080, 0x230c373f

+ 22
- 22
tests/ref/fate/filter-yadif-mode1 View File

@@ -5,27 +5,27 @@
0, 21, 21, 1, 622080, 0x9a57891f
0, 22, 22, 1, 622080, 0x1dbdc653
0, 23, 23, 1, 622080, 0xc171c0c5
0, 24, 24, 1, 622080, 0x82c591d1
0, 24, 24, 1, 622080, 0x55c791d0
0, 25, 25, 1, 622080, 0x20db9890
0, 26, 26, 1, 622080, 0x8193740b
0, 27, 27, 1, 622080, 0xdb181d52
0, 28, 28, 1, 622080, 0xcb219711
0, 28, 28, 1, 622080, 0x7125970f
0, 29, 29, 1, 622080, 0xc2b913d1
0, 30, 30, 1, 622080, 0x1870783b
0, 30, 30, 1, 622080, 0xeb63783a
0, 31, 31, 1, 622080, 0xf1d9c5fb
0, 32, 32, 1, 622080, 0x7080590b
0, 33, 33, 1, 622080, 0x669c5775
0, 34, 34, 1, 622080, 0x6df4175d
0, 33, 33, 1, 622080, 0xeda55774
0, 34, 34, 1, 622080, 0x13f8175b
0, 35, 35, 1, 622080, 0x01921a16
0, 36, 36, 1, 622080, 0x6b530e95
0, 36, 36, 1, 622080, 0x3e550e94
0, 37, 37, 1, 622080, 0xd5047bc9
0, 38, 38, 1, 622080, 0x7f9d66f7
0, 39, 39, 1, 622080, 0xa8b006eb
0, 40, 40, 1, 622080, 0x338cda81
0, 39, 39, 1, 622080, 0x2fc806ea
0, 40, 40, 1, 622080, 0x068eda80
0, 41, 41, 1, 622080, 0xf0e125a7
0, 42, 42, 1, 622080, 0xb13797f8
0, 42, 42, 1, 622080, 0x843997f7
0, 43, 43, 1, 622080, 0x4afe2976
0, 44, 44, 1, 622080, 0xb51e7ca4
0, 44, 44, 1, 622080, 0x88207ca3
0, 45, 45, 1, 622080, 0x637fcbfe
0, 46, 46, 1, 622080, 0x353eed75
0, 47, 47, 1, 622080, 0xd9a8f5ac
@@ -34,30 +34,30 @@
0, 50, 50, 1, 622080, 0xd0811094
0, 51, 51, 1, 622080, 0x3039906f
0, 52, 52, 1, 622080, 0xb04a3141
0, 53, 53, 1, 622080, 0x52872cf9
0, 53, 53, 1, 622080, 0xe62d2cfa
0, 54, 54, 1, 622080, 0x4ab84909
0, 55, 55, 1, 622080, 0x82de12ee
0, 56, 56, 1, 622080, 0xa0fcb8fb
0, 56, 56, 1, 622080, 0x4700b8f9
0, 57, 57, 1, 622080, 0x7e849cc9
0, 58, 58, 1, 622080, 0x9003aebb
0, 59, 59, 1, 622080, 0xffe6f770
0, 58, 58, 1, 622080, 0x6305aeba
0, 59, 59, 1, 622080, 0x939bf771
0, 60, 60, 1, 622080, 0x153faa3e
0, 61, 61, 1, 622080, 0xb67f3233
0, 62, 62, 1, 622080, 0xae724063
0, 63, 63, 1, 622080, 0x15fe44b4
0, 64, 64, 1, 622080, 0xeb4de77a
0, 63, 63, 1, 622080, 0xed2b44b3
0, 64, 64, 1, 622080, 0xbe4fe779
0, 65, 65, 1, 622080, 0x380f8563
0, 66, 66, 1, 622080, 0x209ed8c7
0, 67, 67, 1, 622080, 0xb964d70f
0, 68, 68, 1, 622080, 0xe2bbac96
0, 69, 69, 1, 622080, 0x4f60f7f4
0, 70, 70, 1, 622080, 0xe945441e
0, 71, 71, 1, 622080, 0xd0afb742
0, 72, 72, 1, 622080, 0x8f8cbd5f
0, 71, 71, 1, 622080, 0xded0b740
0, 72, 72, 1, 622080, 0x3590bd5d
0, 73, 73, 1, 622080, 0xb9a15294
0, 74, 74, 1, 622080, 0xbc3cf717
0, 75, 75, 1, 622080, 0xb70b01a9
0, 74, 74, 1, 622080, 0x8f3ef716
0, 75, 75, 1, 622080, 0x3e2301a8
0, 76, 76, 1, 622080, 0x0109f125
0, 77, 77, 1, 622080, 0xcb3a371f
0, 77, 77, 1, 622080, 0x5252371e
0, 78, 78, 1, 622080, 0x230c373f
0, 79, 79, 1, 622080, 0x82dfb1f2
0, 79, 79, 1, 622080, 0x5a1ab1f1

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