Initial libass release (without mencoder support).

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18942 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 435 insertions, 0 deletions

diff --git a/libmpcodecs/vf_ass.c b/libmpcodecs/vf_ass.c
new file mode 100644
index 0000000000..39f073197a
--- /dev/null
+++ b/libmpcodecs/vf_ass.c
@@ -0,0 +1,435 @@
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <assert.h>
+
+#include "config.h"
+#include "mp_msg.h"
+#include "help_mp.h"
+
+#include "img_format.h"
+#include "mp_image.h"
+#include "vf.h"
+
+#include "libvo/fastmemcpy.h"
+
+#include "m_option.h"
+#include "m_struct.h"
+
+#include "libass/ass.h"
+#include "libass/ass_mp.h"
+
+#define _r(c)  ((c)>>24)
+#define _g(c)  (((c)>>16)&0xFF)
+#define _b(c)  (((c)>>8)&0xFF)
+#define _a(c)  ((c)&0xFF)
+#define rgba2y(c)  ( (( 263*_r(c)  + 516*_g(c) + 100*_b(c)) >> 10) + 16  )
+#define rgba2u(c)  ( ((-152*_r(c) - 298*_g(c) + 450*_b(c)) >> 10) + 128 )
+#define rgba2v(c)  ( (( 450*_r(c) - 376*_g(c) -  73*_b(c)) >> 10) + 128 )
+
+
+static struct vf_priv_s {
+	int outh, outw;
+
+	unsigned int outfmt;
+
+	// 1 = auto-added filter: insert only if chain does not support EOSD already
+	// 0 = insert always
+	int auto_insert;
+
+	ass_instance_t* ass_priv;
+
+	unsigned char* planes[3];
+	unsigned char* dirty_rows;
+} vf_priv_dflt;
+
+extern int opt_screen_size_x;
+extern int opt_screen_size_y;
+
+extern ass_track_t* ass_track;
+extern float sub_delay;
+extern int sub_visibility;
+
+static int config(struct vf_instance_s* vf,
+	int width, int height, int d_width, int d_height,
+	unsigned int flags, unsigned int outfmt)
+{
+	ass_settings_t settings;
+	
+	if (outfmt == IMGFMT_IF09) return 0;
+
+	vf->priv->outh = height + ass_top_margin + ass_bottom_margin;
+	vf->priv->outw = width;
+
+	if(!opt_screen_size_x && !opt_screen_size_y){
+		d_width = d_width * vf->priv->outw / width;
+		d_height = d_height * vf->priv->outh / height;
+	} 
+
+	vf->priv->planes[1] = (unsigned char*)malloc(vf->priv->outw * vf->priv->outh);
+	vf->priv->planes[2] = (unsigned char*)malloc(vf->priv->outw * vf->priv->outh);
+	vf->priv->dirty_rows = (unsigned char*)malloc(vf->priv->outh);
+	
+	if (vf->priv->ass_priv) {
+		settings.frame_width = vf->priv->outw;
+		settings.frame_height = vf->priv->outh;
+		settings.font_size_coeff = ass_font_scale;
+		settings.line_spacing = ass_line_spacing;
+		settings.top_margin = ass_top_margin;
+		settings.bottom_margin = ass_bottom_margin;
+		settings.aspect = ((double)d_width) / d_height;
+		
+		ass_configure(vf->priv->ass_priv, &settings);
+	}
+
+	return vf_next_config(vf, vf->priv->outw, vf->priv->outh, d_width, d_height, flags, outfmt);
+}
+
+static void get_image(struct vf_instance_s* vf, mp_image_t *mpi)
+{
+	if(mpi->type == MP_IMGTYPE_IPB) return;
+	if(mpi->flags & MP_IMGFLAG_PRESERVE) return;
+	if(mpi->imgfmt != vf->priv->outfmt) return; // colorspace differ
+	    
+	// width never changes, always try full DR
+	mpi->priv = vf->dmpi = vf_get_image(vf->next, mpi->imgfmt,
+			mpi->type, mpi->flags, 
+			vf->priv->outw,
+			vf->priv->outh);
+
+	if((vf->dmpi->flags & MP_IMGFLAG_DRAW_CALLBACK) &&
+			!(vf->dmpi->flags & MP_IMGFLAG_DIRECT)){
+		mp_msg(MSGT_VFILTER, MSGL_INFO, MSGTR_MPCODECS_FullDRNotPossible);
+		return;
+	}
+
+	// set up mpi as a cropped-down image of dmpi:
+	if(mpi->flags&MP_IMGFLAG_PLANAR){
+		mpi->planes[0]=vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
+		mpi->planes[1]=vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1];
+		mpi->planes[2]=vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2];
+		mpi->stride[1]=vf->dmpi->stride[1];
+		mpi->stride[2]=vf->dmpi->stride[2];
+	} else {
+		mpi->planes[0]=vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
+	}
+	mpi->stride[0]=vf->dmpi->stride[0];
+	mpi->width=vf->dmpi->width;
+	mpi->flags|=MP_IMGFLAG_DIRECT;
+	mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
+//	vf->dmpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
+}
+
+static void blank(mp_image_t *mpi, int y1, int y2)
+{
+	int color[3] = {16, 128, 128}; // black (YUV)
+	int y;
+	unsigned char* dst;
+	int chroma_rows = (y2 - y1) >> mpi->chroma_y_shift;
+
+	dst = mpi->planes[0] + y1 * mpi->stride[0];
+	for (y = 0; y < y2 - y1; ++y) {
+		memset(dst, color[0], mpi->w);
+		dst += mpi->stride[0];
+	}
+	dst = mpi->planes[1] + (y1 >> mpi->chroma_y_shift) * mpi->stride[1];
+	for (y = 0; y < chroma_rows ; ++y) {
+		memset(dst, color[1], mpi->chroma_width);
+		dst += mpi->stride[1];
+	}
+	dst = mpi->planes[2] + (y1 >> mpi->chroma_y_shift) * mpi->stride[2];
+	for (y = 0; y < chroma_rows ; ++y) {
+		memset(dst, color[2], mpi->chroma_width);
+		dst += mpi->stride[2];
+	}
+}
+
+static int prepare_image(struct vf_instance_s* vf, mp_image_t *mpi)
+{
+	if(mpi->flags&MP_IMGFLAG_DIRECT || mpi->flags&MP_IMGFLAG_DRAW_CALLBACK){
+		vf->dmpi = mpi->priv;
+		if (!vf->dmpi) { mp_msg(MSGT_VFILTER, MSGL_WARN, MSGTR_MPCODECS_FunWhydowegetNULL); return 0; }
+		mpi->priv = NULL;
+		// we've used DR, so we're ready...
+		if (ass_top_margin)
+			blank(vf->dmpi, 0, ass_top_margin);
+		if (ass_bottom_margin)
+			blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
+		if(!(mpi->flags&MP_IMGFLAG_PLANAR))
+			vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
+		return 0;
+	}
+
+	// hope we'll get DR buffer:
+	vf->dmpi = vf_get_image(vf->next, vf->priv->outfmt,
+			MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
+			vf->priv->outw, vf->priv->outh);
+
+	// copy mpi->dmpi...
+	if(mpi->flags&MP_IMGFLAG_PLANAR){
+		memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
+				mpi->planes[0], mpi->w, mpi->h,
+				vf->dmpi->stride[0], mpi->stride[0]);
+		memcpy_pic(vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1],
+				mpi->planes[1], mpi->w >> mpi->chroma_x_shift, mpi->h >> mpi->chroma_y_shift,
+				vf->dmpi->stride[1], mpi->stride[1]);
+		memcpy_pic(vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2],
+				mpi->planes[2], mpi->w >> mpi->chroma_x_shift, mpi->h >> mpi->chroma_y_shift,
+				vf->dmpi->stride[2], mpi->stride[2]);
+	} else {
+		memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
+				mpi->planes[0], mpi->w*(vf->dmpi->bpp/8), mpi->h,
+				vf->dmpi->stride[0], mpi->stride[0]);
+		vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
+	}
+	if (ass_top_margin)
+		blank(vf->dmpi, 0, ass_top_margin);
+	if (ass_bottom_margin)
+		blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
+	return 0;
+}
+
+/**
+ * \brief Copy specified rows from render_context.dmpi to render_context.planes, upsampling to 4:4:4
+ */
+static void copy_from_image(struct vf_instance_s* vf, int first_row, int last_row)
+{
+	int pl;
+	int i, j, k;
+	unsigned char val;
+	int chroma_rows;
+
+	first_row -= (first_row % 2);
+	last_row += (last_row % 2);
+	chroma_rows = (last_row - first_row) / 2;
+
+	for (pl = 1; pl < 3; ++pl) {
+		int dst_stride = vf->dmpi->stride[pl] * 2;
+		int src_stride = vf->dmpi->stride[pl];
+		
+		unsigned char* src = vf->dmpi->planes[pl] + (first_row/2) * src_stride;
+		unsigned char* dst = vf->priv->planes[pl] + first_row * dst_stride;
+		unsigned char* dst_next = dst + dst_stride;
+		for(i = 0; i < chroma_rows; ++i)
+		{
+			if ((vf->priv->dirty_rows[first_row + i*2] == 0) ||
+				(vf->priv->dirty_rows[first_row + i*2 + 1] == 0)) {
+				for (j = 0, k = 0; j < vf->dmpi->chroma_width; ++j, k+=2) {
+					val = *(src + j);
+					*(dst + k) = val;
+					*(dst + k + 1) = val;
+					*(dst_next + k) = val;
+					*(dst_next + k + 1) = val;
+				}
+			}
+			src += src_stride;
+			dst = dst_next + dst_stride;
+			dst_next = dst + dst_stride;
+		}
+	}
+	for (i = first_row; i < last_row; ++i)
+		vf->priv->dirty_rows[i] = 1;
+}
+
+/**
+ * \brief Copy all previously copied rows back to render_context.dmpi
+ */
+static void copy_to_image(struct vf_instance_s* vf)
+{
+	int pl;
+	int i, j, k;
+	for (pl = 1; pl < 3; ++pl) {
+		int dst_stride = vf->dmpi->stride[pl];
+		int src_stride = vf->dmpi->stride[pl] * 2;
+		
+		unsigned char* dst = vf->dmpi->planes[pl];
+		unsigned char* src = vf->priv->planes[pl];
+		unsigned char* src_next = vf->priv->planes[pl] + src_stride;
+		for(i = 0; i < vf->dmpi->chroma_height; ++i)
+		{
+			if ((vf->priv->dirty_rows[i*2] == 1)) {
+				assert(vf->priv->dirty_rows[i*2 + 1] == 1);
+				for (j = 0, k = 0; j < vf->dmpi->chroma_width; ++j, k+=2) {
+					unsigned val = 0;
+					val += *(src + k);
+					val += *(src + k + 1);
+					val += *(src_next + k);
+					val += *(src_next + k + 1);
+					*(dst + j) = val >> 2;
+				}
+			}
+			dst += dst_stride;
+			src = src_next + src_stride;
+			src_next = src + src_stride;
+		}
+	}
+}
+
+static void my_draw_bitmap(struct vf_instance_s* vf, unsigned char* bitmap, int bitmap_w, int bitmap_h, int stride, int dst_x, int dst_y, unsigned color)
+{
+	unsigned char y = rgba2y(color);
+	unsigned char u = rgba2u(color);
+	unsigned char v = rgba2v(color);
+	unsigned char opacity = 255 - _a(color);
+	unsigned char* src;
+	unsigned char* dst;
+	int i, j;
+	mp_image_t* dmpi = vf->dmpi;
+
+	
+	src = bitmap;
+	dst = dmpi->planes[0] + dst_x + dst_y * dmpi->stride[0];
+	for(i = 0; i < bitmap_h; ++i)
+	{
+		for (j = 0; j < bitmap_w; ++j) {
+		//	unsigned k = *(src+j);
+			unsigned k = ((unsigned)*(bitmap + stride * i + j)) * opacity / 255;
+			unsigned char orig_color = *(dst+j);
+			*(dst+j) = (k*y + (255-k)*orig_color) / 255;
+		}
+		src += stride;
+		dst += dmpi->stride[0];
+	}
+
+	for (i = 0; i < bitmap_h; ++i) {
+		for (j = 0; j < bitmap_w; ++j) {
+			int x = dst_x + j;
+			int y = dst_y + i;
+			unsigned k;
+			unsigned char orig_u, orig_v;
+			unsigned char new_u, new_v;
+
+			k = ((unsigned)*(bitmap + stride * i + j)) * opacity / 255;
+
+			orig_u = *(vf->priv->planes[1] + x + y * 2 * dmpi->chroma_width);
+			new_u = (k*u + (255-k)*orig_u) / 255;
+			*(vf->priv->planes[1] + x + y * 2 * dmpi->chroma_width) = new_u;
+
+			orig_v = *(vf->priv->planes[2] + x + y * 2 * dmpi->chroma_width);
+			new_v = (k*v + (255-k)*orig_v) / 255;
+			*(vf->priv->planes[2] + x + y * 2 * dmpi->chroma_width) = new_v;
+		}
+	} 
+}
+
+static int render_frame(struct vf_instance_s* vf, mp_image_t *mpi, const ass_image_t* img)
+{
+	if (img) {
+		memset(vf->priv->dirty_rows, 0, vf->priv->outh); // reset dirty rows
+		while (img) {
+			copy_from_image(vf, img->dst_y, img->dst_y + img->h);
+			my_draw_bitmap(vf, img->bitmap, img->w, img->h, img->stride,
+					img->dst_x, img->dst_y, img->color);
+			img = img->next;
+		}
+		copy_to_image(vf);
+	}
+	return 0;
+}
+
+static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
+{
+	ass_image_t* images = 0;
+	if (sub_visibility && vf->priv->ass_priv && ass_track && (pts != MP_NOPTS_VALUE))
+		images = ass_render_frame(vf->priv->ass_priv, ass_track, (pts+sub_delay) * 1000 + .5);
+	
+	prepare_image(vf, mpi);
+	if (images) render_frame(vf, mpi, images);
+
+	return vf_next_put_image(vf, vf->dmpi, pts);
+}
+
+static int query_format(struct vf_instance_s* vf, unsigned int fmt)
+{
+	switch(fmt){
+	case IMGFMT_YV12:
+	case IMGFMT_I420:
+	case IMGFMT_IYUV:
+		return vf_next_query_format(vf, vf->priv->outfmt);
+	}
+	return 0;
+}
+
+static int control(vf_instance_t *vf, int request, void *data)
+{
+	if (request == VFCTRL_EOSD) {
+		vf->priv->ass_priv = ass_init();
+		if (!vf->priv->ass_priv) {
+			mp_msg(MSGT_VFILTER, MSGL_ERR, "[ass] init failed\n");
+			return 0;
+		} else
+			mp_msg(MSGT_VFILTER, MSGL_INFO, "[ass] init\n");
+		return CONTROL_TRUE;
+	}
+	return vf_next_control(vf, request, data);
+}
+
+static void uninit(struct vf_instance_s* vf)
+{
+	if (vf->priv->ass_priv)
+		ass_done(vf->priv->ass_priv);
+	if (vf->priv->planes[1])
+		free(vf->priv->planes[1]);
+	if (vf->priv->planes[2])
+		free(vf->priv->planes[2]);
+	if (vf->priv->dirty_rows)
+		free(vf->priv->dirty_rows);
+}
+
+static unsigned int fmt_list[]={
+	IMGFMT_YV12,
+	IMGFMT_I420,
+	IMGFMT_IYUV,
+	0
+};
+
+static int open(vf_instance_t *vf, char* args)
+{
+	int flags;
+	vf->priv->outfmt = vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
+	if (vf->priv->outfmt)
+		flags = vf_next_query_format(vf, vf->priv->outfmt);
+	if (!vf->priv->outfmt || (vf->priv->auto_insert && flags&VFCAP_EOSD))
+	{
+		uninit(vf);
+		return 0;
+	}
+	
+	if (vf->priv->auto_insert)
+		mp_msg(MSGT_VFILTER, MSGL_INFO, "[ass] auto-open\n");
+	
+	vf->config = config;
+	vf->query_format = query_format;
+	vf->uninit = uninit;
+	vf->control = control;
+	vf->get_image = get_image;
+	vf->put_image = put_image;
+	vf->default_caps=VFCAP_EOSD;
+	return 1;
+}
+
+#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
+static m_option_t vf_opts_fields[] = {
+	{"auto", ST_OFF(auto_insert), CONF_TYPE_FLAG, 0 , 0, 1, NULL},
+	{ NULL, NULL, 0, 0, 0, 0,  NULL }
+};
+
+static m_struct_t vf_opts = {
+	"ass",
+	sizeof(struct vf_priv_s),
+	&vf_priv_dflt,
+	vf_opts_fields
+};
+
+vf_info_t vf_info_ass = {
+	"Render ASS/SSA subtitles",
+	"ass",
+	"Evgeniy Stepanov",
+	"",
+	open,
+	&vf_opts
+};
+