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| author | Marton Balint <cus@passwd.hu> | 2016-01-21 22:49:12 +0100 |
|---|---|---|
| committer | Marton Balint <cus@passwd.hu> | 2016-01-25 22:06:57 +0100 |
| commit | fe4a2cbd4d220a11cc82175f4cc699a4b8e74cd0 (patch) | |
| tree | 4d15d2b7e1b16e938302f288f3732c8fbeceefd7 /libavcodec/libzvbi-teletextdec.c | |
| parent | b46aae093634271931395d65f422f4b2a23112d3 (diff) | |
| download | ffmpeg-fe4a2cbd4d220a11cc82175f4cc699a4b8e74cd0.tar.gz | |
lavc/libzvbi-teletextdec: use the built-in transparent color for transparent background
Signed-off-by: Marton Balint <cus@passwd.hu>
Diffstat (limited to 'libavcodec/libzvbi-teletextdec.c')
| -rw-r--r-- | libavcodec/libzvbi-teletextdec.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/libavcodec/libzvbi-teletextdec.c b/libavcodec/libzvbi-teletextdec.c index 4e59531216..4342465890 100644 --- a/libavcodec/libzvbi-teletextdec.c +++ b/libavcodec/libzvbi-teletextdec.c @@ -30,6 +30,7 @@ #define TEXT_MAXSZ (25 * (56 + 1) * 4 + 2) #define VBI_NB_COLORS 40 +#define VBI_TRANSPARENT_BLACK 8 #define RGBA(r,g,b,a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b)) #define VBI_R(rgba) (((rgba) >> 0) & 0xFF) #define VBI_G(rgba) (((rgba) >> 8) & 0xFF) @@ -193,7 +194,7 @@ static int gen_sub_text(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page } static void fix_transparency(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, - int chop_top, uint8_t transparent_color, int resx, int resy) + int chop_top, int resx, int resy) { int iy; @@ -206,7 +207,7 @@ static void fix_transparency(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi uint8_t *pixelnext = pixel + BITMAP_CHAR_WIDTH; switch (vc->opacity) { case VBI_TRANSPARENT_SPACE: - memset(pixel, transparent_color, BITMAP_CHAR_WIDTH); + memset(pixel, VBI_TRANSPARENT_BLACK, BITMAP_CHAR_WIDTH); break; case VBI_OPAQUE: case VBI_SEMI_TRANSPARENT: @@ -215,7 +216,7 @@ static void fix_transparency(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi case VBI_TRANSPARENT_FULL: for(; pixel < pixelnext; pixel++) if (*pixel == vc->background) - *pixel = transparent_color; + *pixel = VBI_TRANSPARENT_BLACK; break; } pixel = pixelnext; @@ -255,12 +256,12 @@ static int gen_sub_bitmap(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_pa 0, chop_top, page->columns, page->rows - chop_top, /*reveal*/ 1, /*flash*/ 1); - fix_transparency(ctx, sub_rect, page, chop_top, cmax, resx, resy); + fix_transparency(ctx, sub_rect, page, chop_top, resx, resy); sub_rect->x = ctx->x_offset; sub_rect->y = ctx->y_offset + chop_top * BITMAP_CHAR_HEIGHT; sub_rect->w = resx; sub_rect->h = resy; - sub_rect->nb_colors = (int)cmax + 1; + sub_rect->nb_colors = cmax; sub_rect->data[1] = av_mallocz(AVPALETTE_SIZE); if (!sub_rect->data[1]) { av_freep(&sub_rect->data[0]); @@ -276,7 +277,7 @@ static int gen_sub_bitmap(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_pa ((uint32_t *)sub_rect->data[1])[ci] = RGBA(r, g, b, a); ff_dlog(ctx, "palette %0x\n", ((uint32_t *)sub_rect->data[1])[ci]); } - ((uint32_t *)sub_rect->data[1])[cmax] = RGBA(0, 0, 0, 0); + ((uint32_t *)sub_rect->data[1])[VBI_TRANSPARENT_BLACK] = RGBA(0, 0, 0, 0); sub_rect->type = SUBTITLE_BITMAP; return 0; } |