From 85b287acd08b1f28d85de60e8861f85141685c7e Mon Sep 17 00:00:00 2001 From: melanson Date: Sun, 31 Mar 2002 15:33:32 +0000 Subject: modified the new MS RLE decoder to support BGR15/16 output formats in addition to BGR24/32, just like the old XAnim decoder; it's also interesting to note that this commit wantonly violates A'rpi's newest nonsensical CVS policy, and I quote: Note: if you had to put if(){ .. } over big (> 5 lines) code, do NOT change the indent of the inner part (move it right) ! git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5421 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpcodecs/vd_msrle.c | 211 +++++++++++++++++++++++++++++++++++++------------ 1 file changed, 161 insertions(+), 50 deletions(-) diff --git a/libmpcodecs/vd_msrle.c b/libmpcodecs/vd_msrle.c index 3ed00fb98b..c3c47ba183 100644 --- a/libmpcodecs/vd_msrle.c +++ b/libmpcodecs/vd_msrle.c @@ -10,7 +10,7 @@ static vd_info_t info = { "Microsoft RLE decoder", "msrle", VFM_MSRLE, - "A'rpi", + "Mike Melanson", "Mike Melanson", "native codec" }; @@ -24,23 +24,56 @@ static int control(sh_video_t *sh,int cmd,void* arg,...){ // init driver static int init(sh_video_t *sh){ - unsigned char *palette = (unsigned char *)sh->bih+40; + unsigned char *palette_map = NULL; + unsigned char *orig_map = (unsigned char *)sh->bih+40; int i; unsigned short color; + unsigned char r, g, b; + int bits_per_pixel = sh->codec->outfmt[sh->outfmtidx] & 255; - // if BGR15 & BGR16, modify palette in place - for (i = 0; i < sh->bih->biClrUsed; i++) + // convert the palette for the requested output format + switch (bits_per_pixel) { + case 15: + case 16: + if ((palette_map = + (unsigned char *)malloc(sh->bih->biClrUsed * 2)) == NULL) + return 0; + + for (i = 0; i < sh->bih->biClrUsed; i++) + { + r = orig_map[i * 4 + 2]; + g = orig_map[i * 4 + 1]; + b = orig_map[i * 4 + 0]; + if (bits_per_pixel == 15) + color = ((r>>3)<<10) | ((g>>3)<<5) | ((b>>3)); + else + color = ((r>>3)<<11) | ((g>>2)<<5) | ((b>>3)); + palette_map[i * 2 + 1] = color >> 8; + palette_map[i * 2 + 0] = color & 0xFF; + } + break; + + case 24: + case 32: + if ((palette_map = + (unsigned char *)malloc(sh->bih->biClrUsed * 4)) == NULL) + return 0; + memcpy(palette_map, orig_map, sh->bih->biClrUsed * 4); + break; } + sh->context = palette_map; + return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_BGR24); } // uninit driver static void uninit(sh_video_t *sh){ -} + unsigned char *palette_map = (unsigned char *)sh->context; -//mp_image_t* mpcodecs_get_image(sh_video_t *sh, int mp_imgtype, int mp_imgflag, int w, int h); + free(palette_map); +} #define FETCH_NEXT_STREAM_BYTE() \ if (stream_ptr >= encoded_size) \ @@ -61,8 +94,10 @@ void decode_msrle4( int bits_per_pixel) { int bytes_per_pixel = (bits_per_pixel + 1) / 8; - unsigned char r1, g1, b1; + unsigned char r1, g1, b1; // for 24/32 bpp unsigned char r2, g2, b2; + unsigned char color_hi1, color_lo1; // for 15/16 bpp + unsigned char color_hi2, color_lo2; int stream_ptr = 0; unsigned char rle_code; unsigned char extra_byte; @@ -73,6 +108,8 @@ void decode_msrle4( int row_ptr = (height - 1) * row_dec; int i; + r1 = r2 = g1 = g2 = b1 = b2 = + color_hi1 = color_hi2 = color_lo1 = color_lo2 = 0; while (row_ptr >= 0) { FETCH_NEXT_STREAM_BYTE(); @@ -116,22 +153,42 @@ void decode_msrle4( { if (pixel_ptr >= row_dec) break; - r1 = palette_map[(encoded[stream_ptr + i] >> 4) * 4 + 2]; - g1 = palette_map[(encoded[stream_ptr + i] >> 4) * 4 + 1]; - b1 = palette_map[(encoded[stream_ptr + i] >> 4) * 4 + 0]; - decoded[row_ptr + pixel_ptr + 0] = b1; - decoded[row_ptr + pixel_ptr + 1] = g1; - decoded[row_ptr + pixel_ptr + 2] = r1; + if (bytes_per_pixel == 2) + { + color_hi1 = palette_map[(encoded[stream_ptr + i] >> 4) * 2 + 0]; + color_lo1 = palette_map[(encoded[stream_ptr + i] >> 4) * 2 + 1]; + decoded[row_ptr + pixel_ptr + 0] = color_hi1; + decoded[row_ptr + pixel_ptr + 1] = color_lo1; + } + else + { + r1 = palette_map[(encoded[stream_ptr + i] >> 4) * 4 + 2]; + g1 = palette_map[(encoded[stream_ptr + i] >> 4) * 4 + 1]; + b1 = palette_map[(encoded[stream_ptr + i] >> 4) * 4 + 0]; + decoded[row_ptr + pixel_ptr + 0] = b1; + decoded[row_ptr + pixel_ptr + 1] = g1; + decoded[row_ptr + pixel_ptr + 2] = r1; + } pixel_ptr += bytes_per_pixel; if (pixel_ptr >= row_dec) break; - r1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 4 + 2]; - g1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 4 + 1]; - b1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 4 + 0]; - decoded[row_ptr + pixel_ptr + 0] = b1; - decoded[row_ptr + pixel_ptr + 1] = g1; - decoded[row_ptr + pixel_ptr + 2] = r1; + if (bytes_per_pixel == 2) + { + color_hi1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 2 + 0]; + color_lo1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 2 + 1]; + decoded[row_ptr + pixel_ptr + 0] = color_hi1; + decoded[row_ptr + pixel_ptr + 1] = color_lo1; + } + else + { + r1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 4 + 2]; + g1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 4 + 1]; + b1 = palette_map[(encoded[stream_ptr + i] & 0x0F) * 4 + 0]; + decoded[row_ptr + pixel_ptr + 0] = b1; + decoded[row_ptr + pixel_ptr + 1] = g1; + decoded[row_ptr + pixel_ptr + 2] = r1; + } pixel_ptr += bytes_per_pixel; } stream_ptr += rle_code; @@ -145,12 +202,22 @@ void decode_msrle4( { // decode a run of data FETCH_NEXT_STREAM_BYTE(); - r1 = palette_map[(stream_byte >> 4) * 4 + 2]; - g1 = palette_map[(stream_byte >> 4) * 4 + 1]; - b1 = palette_map[(stream_byte >> 4) * 4 + 0]; - r2 = palette_map[(stream_byte & 0x0F) * 4 + 2]; - g2 = palette_map[(stream_byte & 0x0F) * 4 + 1]; - b2 = palette_map[(stream_byte & 0x0F) * 4 + 0]; + if (bytes_per_pixel == 2) + { + color_hi1 = palette_map[(stream_byte >> 4) * 2 + 0]; + color_lo1 = palette_map[(stream_byte >> 4) * 2 + 1]; + color_hi2 = palette_map[(stream_byte & 0x0F) * 2 + 0]; + color_lo2 = palette_map[(stream_byte & 0x0F) * 2 + 1]; + } + else + { + r1 = palette_map[(stream_byte >> 4) * 4 + 2]; + g1 = palette_map[(stream_byte >> 4) * 4 + 1]; + b1 = palette_map[(stream_byte >> 4) * 4 + 0]; + r2 = palette_map[(stream_byte & 0x0F) * 4 + 2]; + g2 = palette_map[(stream_byte & 0x0F) * 4 + 1]; + b2 = palette_map[(stream_byte & 0x0F) * 4 + 0]; + } for (i = 0; i < rle_code; i++) { if (pixel_ptr >= row_dec) @@ -158,15 +225,31 @@ void decode_msrle4( if ((i & 1) == 0) { - decoded[row_ptr + pixel_ptr + 0] = b1; - decoded[row_ptr + pixel_ptr + 1] = g1; - decoded[row_ptr + pixel_ptr + 2] = r1; + if (bytes_per_pixel == 2) + { + decoded[row_ptr + pixel_ptr + 0] = color_hi1; + decoded[row_ptr + pixel_ptr + 1] = color_lo1; + } + else + { + decoded[row_ptr + pixel_ptr + 0] = b1; + decoded[row_ptr + pixel_ptr + 1] = g1; + decoded[row_ptr + pixel_ptr + 2] = r1; + } } else { - decoded[row_ptr + pixel_ptr + 0] = b2; - decoded[row_ptr + pixel_ptr + 1] = g2; - decoded[row_ptr + pixel_ptr + 2] = r2; + if (bytes_per_pixel == 2) + { + decoded[row_ptr + pixel_ptr + 0] = color_hi2; + decoded[row_ptr + pixel_ptr + 1] = color_lo2; + } + else + { + decoded[row_ptr + pixel_ptr + 0] = b2; + decoded[row_ptr + pixel_ptr + 1] = g2; + decoded[row_ptr + pixel_ptr + 2] = r2; + } } pixel_ptr += bytes_per_pixel; } @@ -190,7 +273,8 @@ void decode_msrle8( int bits_per_pixel) { int bytes_per_pixel = (bits_per_pixel + 1) / 8; - unsigned char r, g, b; + unsigned char r, g, b; // for 24/32 bpp + unsigned char color_hi, color_lo; // for 15/16 bpp int stream_ptr = 0; unsigned char rle_code; unsigned char extra_byte; @@ -200,6 +284,7 @@ void decode_msrle8( int row_dec = width * bytes_per_pixel; int row_ptr = (height - 1) * row_dec; + r = g = b = color_hi = color_lo = 0; while (row_ptr >= 0) { FETCH_NEXT_STREAM_BYTE(); @@ -247,13 +332,23 @@ void decode_msrle8( while (rle_code--) { - r = palette_map[encoded[stream_ptr] * 4 + 2]; - g = palette_map[encoded[stream_ptr] * 4 + 1]; - b = palette_map[encoded[stream_ptr] * 4 + 0]; - stream_ptr++; - decoded[row_ptr + pixel_ptr + 0] = b; - decoded[row_ptr + pixel_ptr + 1] = g; - decoded[row_ptr + pixel_ptr + 2] = r; + FETCH_NEXT_STREAM_BYTE(); + if (bytes_per_pixel == 2) + { + color_hi = palette_map[stream_byte * 2 + 0]; + color_lo = palette_map[stream_byte * 2 + 1]; + decoded[row_ptr + pixel_ptr + 0] = color_hi; + decoded[row_ptr + pixel_ptr + 1] = color_lo; + } + else + { + r = palette_map[stream_byte * 4 + 2]; + g = palette_map[stream_byte * 4 + 1]; + b = palette_map[stream_byte * 4 + 0]; + decoded[row_ptr + pixel_ptr + 0] = b; + decoded[row_ptr + pixel_ptr + 1] = g; + decoded[row_ptr + pixel_ptr + 2] = r; + } pixel_ptr += bytes_per_pixel; } @@ -275,14 +370,30 @@ void decode_msrle8( FETCH_NEXT_STREAM_BYTE(); - r = palette_map[stream_byte * 4 + 2]; - g = palette_map[stream_byte * 4 + 1]; - b = palette_map[stream_byte * 4 + 0]; + if (bytes_per_pixel == 2) + { + color_hi = palette_map[stream_byte * 2 + 0]; + color_lo = palette_map[stream_byte * 2 + 1]; + } + else + { + r = palette_map[stream_byte * 4 + 2]; + g = palette_map[stream_byte * 4 + 1]; + b = palette_map[stream_byte * 4 + 0]; + } while(rle_code--) { - decoded[row_ptr + pixel_ptr + 0] = b; - decoded[row_ptr + pixel_ptr + 1] = g; - decoded[row_ptr + pixel_ptr + 2] = r; + if (bytes_per_pixel == 2) + { + decoded[row_ptr + pixel_ptr + 0] = color_hi; + decoded[row_ptr + pixel_ptr + 1] = color_lo; + } + else + { + decoded[row_ptr + pixel_ptr + 0] = b; + decoded[row_ptr + pixel_ptr + 1] = g; + decoded[row_ptr + pixel_ptr + 2] = r; + } pixel_ptr += bytes_per_pixel; } } @@ -299,7 +410,7 @@ void decode_msrle8( static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){ mp_image_t* mpi; if(len<=0) return NULL; // skipped frame - + mpi=mpcodecs_get_image(sh, MP_IMGTYPE_STATIC, MP_IMGFLAG_PRESERVE, sh->disp_w, sh->disp_h); if(!mpi) return NULL; @@ -308,14 +419,14 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){ decode_msrle8( data,len, mpi->planes[0], sh->disp_w, sh->disp_h, - (unsigned char *)sh->bih+40, - mpi->bpp); + (unsigned char *)sh->context, + mpi->imgfmt & 255); else if (sh->format == 2) decode_msrle4( data,len, mpi->planes[0], sh->disp_w, sh->disp_h, - (unsigned char *)sh->bih+40, - mpi->bpp); + (unsigned char *)sh->context, + mpi->imgfmt & 255); else mp_msg(MSGT_DECVIDEO, MSGL_WARN, "MS RLE: Don't know how to decode format %08X", sh->format); 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