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https://github.com/mpv-player/mpv
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Improvements to spudec (DVD/VobSub) subtitle code:
- runtime selectable positioning, like with text subs - runtime selectable scaling/antialiasing algorithm - gaussian blur scaler (finally dvd/vobsub doesn't look like shit!) git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9078 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rfelker
parent
c8091743e1
commit
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@ -1047,6 +1047,36 @@ This is the full pathname without extensions, i.e.\& without the '.idx',
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.TP
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.B \-vobsubid <0-31>
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Specify the VobSub subtitle id.
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.TP
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.B \-spualign <-1\-2>
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Specify how spu (DVD/VobSub) subtitles should be aligned.
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Values are the same as for -subpos, with the extra choice -1 for original
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position.
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.TP
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.B \-spuaa <mode>
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Antialiasing/scaling mode for DVD/VobSub. A value of 16 may be added
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to mode in order to force scaling even when original and scaled frame
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size already match, for example to smooth subtitles with the gaussian
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blur. The available modes are:
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.PD 0
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.RSs
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.IPs 0
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none (fastest, very ugly)
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.IPs 1
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approximate (broken?)
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.IPs 2
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full (slow)
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.IPs 3
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bilinear (default, fast and not too bad)
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.IPs 4
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uses swscaler gaussian blur (looks very good)
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.RE
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.PD 1
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.
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.TP
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.B \-spugauss <0.0\-3.0>
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Variance parameter of gaussian used by -spuaa 4. Higher means more
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blur. The default is 1.0.
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.SH "AUDIO OUTPUT OPTIONS (MPLAYER ONLY)"
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@ -192,6 +192,9 @@
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{"subpos", &sub_pos, CONF_TYPE_INT, CONF_RANGE, 0, 100, NULL},
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{"subalign", &sub_alignment, CONF_TYPE_INT, CONF_RANGE, 0, 2, NULL},
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{"subwidth", &sub_width_p, CONF_TYPE_INT, CONF_RANGE, 10, 100, NULL},
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{"spualign", &spu_alignment, CONF_TYPE_INT, CONF_RANGE, -1, 2, NULL},
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{"spuaa", &spu_aamode, CONF_TYPE_INT, CONF_RANGE, 0, 31, NULL},
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{"spugauss", &spu_gaussvar, CONF_TYPE_FLOAT, CONF_RANGE, 0.0, 3.0, NULL},
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#ifdef HAVE_FREETYPE
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{"subfont-encoding", &subtitle_font_encoding, CONF_TYPE_STRING, 0, 0, 0, NULL},
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{"subfont-text-scale", &text_font_scale_factor, CONF_TYPE_FLOAT, CONF_RANGE, 0, 100, NULL},
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@ -103,6 +103,9 @@ extern int sub_visibility;
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extern int suboverlap_enabled;
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extern int sub_bg_color; /* subtitles background color */
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extern int sub_bg_alpha;
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extern int spu_alignment;
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extern int spu_aamode;
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extern float spu_gaussvar;
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//extern void vo_draw_text_osd(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride));
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//extern void vo_draw_text_progbar(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride));
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139
spudec.c
139
spudec.c
@ -1,17 +1,3 @@
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/* Valid values for ANTIALIASING_ALGORITHM:
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-1: bilinear (similiar to vobsub, fast and good quality)
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0: none (fastest, most ugly)
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1: approximate
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2: full (slowest, best looking)
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*/
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#define ANTIALIASING_ALGORITHM -1
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/* Valid values for SUBPOS:
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0: leave the sub on it's original place
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1: put the sub at the bottom of the picture
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*/
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#define SUBPOS 0
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/* SPUdec.c
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Skeleton of function spudec_process_controll() is from xine sources.
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Further works:
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@ -34,14 +20,26 @@
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#if ANTIALIASING_ALGORITHM == 2
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#include <math.h>
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#endif
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#include "libvo/video_out.h"
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#include "spudec.h"
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#include "postproc/swscale.h"
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#define MIN(a, b) ((a)<(b)?(a):(b))
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/* Valid values for spu_aamode:
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0: none (fastest, most ugly)
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1: approximate
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2: full (slowest)
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3: bilinear (similiar to vobsub, fast and not too bad)
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4: uses swscaler gaussian (this is the only one that looks good)
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*/
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int spu_aamode = 3;
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int spu_alignment = -1;
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float spu_gaussvar = 1.0;
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extern int sub_pos;
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typedef struct packet_t packet_t;
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struct packet_t {
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unsigned char *data;
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@ -605,13 +603,33 @@ void spudec_calc_bbox(void *me, unsigned int dxs, unsigned int dys, unsigned int
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unsigned int scaley = 0x100 * dys / spu->orig_frame_height;
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bbox[0] = spu->start_col * scalex / 0x100;
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bbox[1] = spu->start_col * scalex / 0x100 + spu->width * scalex / 0x100;
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#if SUBPOS == 0
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bbox[2] = spu->start_row * scaley / 0x100;
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bbox[3] = spu->start_row * scaley / 0x100 + spu->height * scaley / 0x100;
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#elif SUBPOS == 1
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bbox[3] = dys -1;
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bbox[2] = bbox[3] -spu->height * scaley / 0x100;
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#endif
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switch (spu_alignment) {
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case 0:
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bbox[3] = dys*sub_pos/100 + spu->height * scaley / 0x100;
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if (bbox[3] > dys) bbox[3] = dys;
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bbox[2] = bbox[3] - spu->height * scaley / 0x100;
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break;
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case 1:
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if (sub_pos < 50) {
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bbox[2] = dys*sub_pos/100 - spu->height * scaley / 0x200;
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if (bbox[2] < 0) bbox[2] = 0;
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bbox[3] = bbox[2] + spu->height;
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} else {
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bbox[3] = dys*sub_pos/100 + spu->height * scaley / 0x200;
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if (bbox[3] > dys) bbox[3] = dys;
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bbox[2] = bbox[3] - spu->height * scaley / 0x100;
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}
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break;
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case 2:
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bbox[2] = dys*sub_pos/100 - spu->height * scaley / 0x100;
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if (bbox[2] < 0) bbox[2] = 0;
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bbox[3] = bbox[2] + spu->height;
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break;
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default: /* -1 */
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bbox[2] = spu->start_row * scaley / 0x100;
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bbox[3] = spu->start_row * scaley / 0x100 + spu->height * scaley / 0x100;
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break;
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}
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}
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}
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/* transform mplayer's alpha value into an opacity value that is linear */
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@ -627,7 +645,6 @@ typedef struct {
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}scale_pixel;
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#if ANTIALIASING_ALGORITHM == -1
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static void scale_table(unsigned int start_src, unsigned int start_tar, unsigned int end_src, unsigned int end_tar, scale_pixel * table)
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{
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unsigned int t;
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@ -674,7 +691,32 @@ static void scale_image(int x, int y, scale_pixel* table_x, scale_pixel* table_y
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spu->scaled_image[scaled] = 256 - spu->scaled_aimage[scaled];
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}
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}
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#endif
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void sws_spu_image(unsigned char *d1, unsigned char *d2, int dw, int dh, int ds,
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unsigned char *s1, unsigned char *s2, int sw, int sh, int ss)
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{
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SwsContext *ctx;
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static SwsFilter filter;
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static int firsttime = 1;
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static float oldvar;
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int i;
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if (!firsttime && oldvar != spu_gaussvar) freeVec(filter.lumH);
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if (firsttime) {
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filter.lumH = filter.lumV =
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filter.chrH = filter.chrV = getGaussianVec(spu_gaussvar, 3.0);
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normalizeVec(filter.lumH, 1.0);
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firsttime = 0;
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oldvar = spu_gaussvar;
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}
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ctx=getSwsContext(sw, sh, IMGFMT_Y800, dw, dh, IMGFMT_Y800, SWS_GAUSS, &filter, NULL);
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ctx->swScale(ctx,&s1,&ss,0,sh,&d1,&ds);
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for (i=ss*sh-1; i>=0; i--) if (!s2[i]) s2[i] = 255; //else s2[i] = 1;
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ctx->swScale(ctx,&s2,&ss,0,sh,&d2,&ds);
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for (i=ds*dh-1; i>=0; i--) if (d2[i]==0) d2[i] = 1; else if (d2[i]==255) d2[i] = 0;
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freeSwsContext(ctx);
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}
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void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride))
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{
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@ -682,8 +724,8 @@ void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*dra
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scale_pixel *table_x;
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scale_pixel *table_y;
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if (spu->start_pts <= spu->now_pts && spu->now_pts < spu->end_pts) {
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if (spu->orig_frame_width == 0 || spu->orig_frame_height == 0
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|| (spu->orig_frame_width == dxs && spu->orig_frame_height == dys)) {
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if (!(spu_aamode&16) && (spu->orig_frame_width == 0 || spu->orig_frame_height == 0
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|| (spu->orig_frame_width == dxs && spu->orig_frame_height == dys))) {
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if (spu->image)
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{
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draw_alpha(spu->start_col, spu->start_row, spu->width, spu->height,
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@ -729,7 +771,13 @@ void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*dra
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if (spu->scaled_width <= 1 || spu->scaled_height <= 1) {
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goto nothing_to_do;
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}
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#if ANTIALIASING_ALGORITHM == -1
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switch(spu_aamode&15) {
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case 4:
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sws_spu_image(spu->scaled_image, spu->scaled_aimage,
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spu->scaled_width, spu->scaled_height, spu->scaled_stride,
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spu->image, spu->aimage, spu->width, spu->height, spu->stride);
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break;
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case 3:
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table_x = calloc(spu->scaled_width, sizeof(scale_pixel));
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table_y = calloc(spu->scaled_height, sizeof(scale_pixel));
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if (!table_x || !table_y) {
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@ -742,7 +790,8 @@ void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*dra
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scale_image(x, y, table_x, table_y, spu);
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free(table_x);
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free(table_y);
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#elif ANTIALIASING_ALGORITHM == 0
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break;
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case 0:
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/* no antialiasing */
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for (y = 0; y < spu->scaled_height; ++y) {
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int unscaled_y = y * 0x100 / scaley;
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@ -754,7 +803,8 @@ void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*dra
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spu->scaled_aimage[scaled_strides + x] = spu->aimage[strides + unscaled_x];
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}
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}
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#elif ANTIALIASING_ALGORITHM == 1
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break;
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case 1:
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{
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/* Intermediate antialiasing. */
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for (y = 0; y < spu->scaled_height; ++y) {
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@ -792,7 +842,8 @@ void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*dra
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}
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}
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}
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#else
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break;
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case 2:
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{
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/* Best antialiasing. Very slow. */
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/* Any pixel (x, y) represents pixels from the original
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@ -959,17 +1010,33 @@ void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*dra
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}
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}
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}
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#endif
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}
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nothing_to_do:
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spu->scaled_frame_width = dxs;
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spu->scaled_frame_height = dys;
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}
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}
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if (spu->scaled_image){
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#if SUBPOS == 1
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/*set subs at the bottom, i don't like to put it at the very bottom, so -1 :)*/
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spu->scaled_start_row = dys - spu->scaled_height - 1;
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#endif
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switch (spu_alignment) {
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case 0:
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spu->scaled_start_row = dys*sub_pos/100;
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if (spu->scaled_start_row + spu->scaled_height > dys)
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spu->scaled_start_row = dys - spu->scaled_height;
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break;
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case 1:
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spu->scaled_start_row = dys*sub_pos/100 - spu->scaled_height/2;
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if (sub_pos < 50) {
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if (spu->scaled_start_row < 0) spu->scaled_start_row = 0;
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} else {
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if (spu->scaled_start_row + spu->scaled_height > dys)
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spu->scaled_start_row = dys - spu->scaled_height;
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}
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break;
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case 2:
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spu->scaled_start_row = dys*sub_pos/100 - spu->scaled_height;
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if (spu->scaled_start_row < 0) spu->scaled_start_row = 0;
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break;
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}
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draw_alpha(spu->scaled_start_col, spu->scaled_start_row, spu->scaled_width, spu->scaled_height,
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spu->scaled_image, spu->scaled_aimage, spu->scaled_stride);
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spu->spu_changed = 0;
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