diff options
Diffstat (limited to 'fbgrab-1.3/fbgrab.c')
| -rw-r--r-- | fbgrab-1.3/fbgrab.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/fbgrab-1.3/fbgrab.c b/fbgrab-1.3/fbgrab.c index 5e4dd89..9badfad 100644 --- a/fbgrab-1.3/fbgrab.c +++ b/fbgrab-1.3/fbgrab.c @@ -297,6 +297,41 @@ static void convert8888to32_crop(int width, int height, int* outWidth, int* outH unsigned char *outbuffer) { unsigned int i; + int minX = 160 + 32; + int maxX = 1119 - 32; + int minY = 0 + 24; + int maxY = 719 - 24; + int pixels = 0; + + for (i=0; i < (unsigned int) height*width; i++) + { + int x = i%width; + int y = i/width; + if ((minX >= 0 && x >= minX) && (maxX < 0 || x <= maxX) && (minY >= 0 && y >= minY) && (maxY < 0 || y <= maxY)) + { + /* BLUE = 0 */ + outbuffer[(pixels<<2)+Blue] = inbuffer[i*4+srcBlue]; + /* GREEN = 1 */ + outbuffer[(pixels<<2)+Green] = inbuffer[i*4+srcGreen]; + /* RED = 2 */ + outbuffer[(pixels<<2)+Red] = inbuffer[i*4+srcRed]; + /* ALPHA */ + outbuffer[(pixels<<2)+Alpha] = /*srcAlpha >= 0 ? inbuffer[i*4+srcAlpha] :*/ 0; + pixels++; + } + } + + *outWidth = maxX - minX + 1; + *outHeight = maxY - minY + 1; + fprintf(stderr, "minx=%d maxx=%d miny=%d maxy=%d\n", minX, maxX, minY, maxY); + fprintf(stderr, "width=%d height=%d\n", *outWidth, *outHeight); +} + +static void convert8888to32_crop_auto(int width, int height, int* outWidth, int* outHeight, + unsigned char *inbuffer, + unsigned char *outbuffer) +{ + unsigned int i; int minX = -1; int maxX = -1; int minY = -1; @@ -339,8 +374,14 @@ static void convert8888to32_crop(int width, int height, int* outWidth, int* outH *outHeight = maxY - minY + 1; fprintf(stderr, "minx=%d maxx=%d miny=%d maxy=%d\n", minX, maxX, minY, maxY); fprintf(stderr, "width=%d height=%d\n", *outWidth, *outHeight); + if (*outWidth <= 2 || *outHeight <= 2) + { + fprintf(stderr, "invalid size, trying other cropping mode\n"); + convert8888to32_crop(width, height, outWidth, outHeight, inbuffer, outbuffer); + } } + static void write_PNG(unsigned char *outbuffer, char *filename, int width, int height, int interlace, int compression) { @@ -381,7 +422,7 @@ static void write_PNG(unsigned char *outbuffer, char *filename, png_init_io(png_ptr, outfile); - png_set_compression_level(png_ptr, Z_BEST_COMPRESSION); + png_set_compression_level(png_ptr, compression); bit_depth = 8; color_type = PNG_COLOR_TYPE_RGB_ALPHA; @@ -440,7 +481,7 @@ static void convert_and_write(unsigned char *inbuffer, char *filename, break; case 32: // convert8888to32(width, height, inbuffer, outbuffer); - convert8888to32_crop(width, height, &outWidth, &outHeight, inbuffer, outbuffer); + convert8888to32_crop_auto(width, height, &outWidth, &outHeight, inbuffer, outbuffer); write_PNG(outbuffer, filename, outWidth, outHeight, interlace, compression); break; default: |