diff options
Diffstat (limited to 'libavformat/gifdec.c')
| -rw-r--r-- | libavformat/gifdec.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/libavformat/gifdec.c b/libavformat/gifdec.c index 429a30cee5..162da564e7 100644 --- a/libavformat/gifdec.c +++ b/libavformat/gifdec.c @@ -46,7 +46,7 @@ typedef struct GifState { int gce_disposal; /* delay during which the frame is shown */ int gce_delay; - + /* LZW compatible decoder */ ByteIOContext *f; int eob_reached; @@ -312,7 +312,7 @@ static int gif_read_image(GifState *s) palette = s->global_palette; bits_per_pixel = s->bits_per_pixel; } - + /* verify that all the image is inside the screen dimensions */ if (left + width > s->screen_width || top + height > s->screen_height) @@ -327,7 +327,7 @@ static int gif_read_image(GifState *s) n = (1 << bits_per_pixel); spal = palette; for(i = 0; i < n; i++) { - s->image_palette[i] = (0xff << 24) | + s->image_palette[i] = (0xff << 24) | (spal[0] << 16) | (spal[1] << 8) | (spal[2]); spal += 3; } @@ -376,7 +376,7 @@ static int gif_read_image(GifState *s) ptr += linesize * 8; if (y1 >= height) { y1 = 4; - if (pass == 0) + if (pass == 0) ptr = ptr1 + linesize * 4; else ptr = ptr1 + linesize * 2; @@ -402,7 +402,7 @@ static int gif_read_image(GifState *s) } } av_free(line); - + /* read the garbage data until end marker is found */ while (!s->eob_reached) GetCode(s); @@ -434,14 +434,14 @@ static int gif_read_extension(GifState *s) s->transparent_color_index = -1; s->gce_disposal = (gce_flags >> 2) & 0x7; #ifdef DEBUG - printf("gif: gce_flags=%x delay=%d tcolor=%d disposal=%d\n", - gce_flags, s->gce_delay, + printf("gif: gce_flags=%x delay=%d tcolor=%d disposal=%d\n", + gce_flags, s->gce_delay, s->transparent_color_index, s->gce_disposal); #endif ext_len = get_byte(f); break; } - + /* NOTE: many extension blocks can come after */ discard_ext: while (ext_len != 0) { @@ -474,11 +474,11 @@ static int gif_read_header1(GifState *s) s->transparent_color_index = -1; s->screen_width = get_le16(f); s->screen_height = get_le16(f); - if( (unsigned)s->screen_width > 32767 + if( (unsigned)s->screen_width > 32767 || (unsigned)s->screen_height > 32767){ av_log(NULL, AV_LOG_ERROR, "picture size too large\n"); return -1; - } + } v = get_byte(f); s->color_resolution = ((v & 0x70) >> 4) + 1; @@ -543,7 +543,7 @@ static int gif_read_header(AVFormatContext * s1, s->f = f; if (gif_read_header1(s) < 0) return -1; - + /* allocate image buffer */ s->image_linesize = s->screen_width * 3; s->image_buf = av_malloc(s->screen_height * s->image_linesize); @@ -593,7 +593,7 @@ static int gif_read_close(AVFormatContext *s1) } /* read gif as image */ -static int gif_read(ByteIOContext *f, +static int gif_read(ByteIOContext *f, int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque) { GifState s1, *s = &s1; |