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mpv/libmpcodecs/vf_scale.c

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "config.h"
#include "mp_msg.h"
#include "cpudetect.h"
#include "options.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "fmt-conversion.h"
#include "mpbswap.h"
#include "libswscale/swscale.h"
#include "vf_scale.h"
#include "libvo/csputils.h"
// VOFLAG_SWSCALE
#include "libvo/video_out.h"
#include "m_option.h"
#include "m_struct.h"
static struct vf_priv_s {
int w,h;
int cfg_w, cfg_h;
int v_chr_drop;
double param[2];
unsigned int fmt;
struct SwsContext *ctx;
struct SwsContext *ctx2; //for interlaced slices only
unsigned char* palette;
int interlaced;
int noup;
int accurate_rnd;
struct mp_csp_details colorspace;
} const vf_priv_dflt = {
0, 0,
-1,-1,
0,
{SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT},
0,
NULL,
NULL,
NULL
};
//===========================================================================//
void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam);
static const unsigned int outfmt_list[]={
// YUV:
IMGFMT_444P,
IMGFMT_444P16_LE,
IMGFMT_444P16_BE,
IMGFMT_444P10_LE,
IMGFMT_444P10_BE,
IMGFMT_444P9_LE,
IMGFMT_444P9_BE,
IMGFMT_422P,
IMGFMT_422P16_LE,
IMGFMT_422P16_BE,
IMGFMT_422P10_LE,
IMGFMT_422P10_BE,
IMGFMT_YV12,
IMGFMT_I420,
IMGFMT_420P16_LE,
IMGFMT_420P16_BE,
IMGFMT_420P10_LE,
IMGFMT_420P10_BE,
IMGFMT_420P9_LE,
IMGFMT_420P9_BE,
IMGFMT_420A,
IMGFMT_IYUV,
IMGFMT_YVU9,
IMGFMT_IF09,
IMGFMT_411P,
IMGFMT_NV12,
IMGFMT_NV21,
IMGFMT_YUY2,
IMGFMT_UYVY,
IMGFMT_440P,
// RGB and grayscale (Y8 and Y800):
IMGFMT_BGR32,
IMGFMT_RGB32,
IMGFMT_BGR24,
IMGFMT_RGB24,
IMGFMT_RGB48LE,
IMGFMT_RGB48BE,
IMGFMT_BGR16,
IMGFMT_RGB16,
IMGFMT_BGR15,
IMGFMT_RGB15,
IMGFMT_BGR12,
IMGFMT_RGB12,
IMGFMT_Y800,
IMGFMT_Y8,
IMGFMT_BGR8,
IMGFMT_RGB8,
IMGFMT_BGR4,
IMGFMT_RGB4,
IMGFMT_BG4B,
IMGFMT_RG4B,
IMGFMT_BGR1,
IMGFMT_RGB1,
0
};
/**
* A list of preferred conversions, in order of preference.
* This should be used for conversions that e.g. involve no scaling
* or to stop vf_scale from choosing a conversion that has no
* fast assembler implementation.
*/
static int preferred_conversions[][2] = {
{IMGFMT_YUY2, IMGFMT_UYVY},
{IMGFMT_YUY2, IMGFMT_422P},
{IMGFMT_UYVY, IMGFMT_YUY2},
{IMGFMT_UYVY, IMGFMT_422P},
{IMGFMT_422P, IMGFMT_YUY2},
{IMGFMT_422P, IMGFMT_UYVY},
{0, 0}
};
static unsigned int find_best_out(vf_instance_t *vf, int in_format){
unsigned int best=0;
int i = -1;
int j = -1;
int format = 0;
// find the best outfmt:
while (1) {
int ret;
if (j < 0) {
format = in_format;
j = 0;
} else if (i < 0) {
while (preferred_conversions[j][0] &&
preferred_conversions[j][0] != in_format)
j++;
format = preferred_conversions[j++][1];
// switch to standard list
if (!format)
i = 0;
}
if (i >= 0)
format = outfmt_list[i++];
if (!format)
break;
ret = vf_next_query_format(vf, format);
mp_msg(MSGT_VFILTER,MSGL_DBG2,"scale: query(%s) -> %d\n",vo_format_name(format),ret&3);
if(ret&VFCAP_CSP_SUPPORTED_BY_HW){
best=format; // no conversion -> bingo!
break;
}
if(ret&VFCAP_CSP_SUPPORTED && !best)
best=format; // best with conversion
}
return best;
}
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
struct MPOpts *opts = vf->opts;
unsigned int best=find_best_out(vf, outfmt);
int vo_flags;
int int_sws_flags=0;
int round_w=0, round_h=0;
int i;
SwsFilter *srcFilter, *dstFilter;
enum PixelFormat dfmt, sfmt;
vf->priv->colorspace = (struct mp_csp_details) {0};
if(!best){
mp_msg(MSGT_VFILTER,MSGL_WARN,"SwScale: no supported outfmt found :(\n");
return 0;
}
sfmt = imgfmt2pixfmt(outfmt);
if (outfmt == IMGFMT_RGB8 || outfmt == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
dfmt = imgfmt2pixfmt(best);
vo_flags=vf->next->query_format(vf->next,best);
vf->priv->w = vf->priv->cfg_w;
vf->priv->h = vf->priv->cfg_h;
// scaling to dwidth*d_height, if all these TRUE:
// - option -zoom
// - no other sw/hw up/down scaling avail.
// - we're after postproc
// - user didn't set w:h
if(!(vo_flags&VFCAP_POSTPROC) && (flags&VOFLAG_SWSCALE) &&
vf->priv->w<0 && vf->priv->h<0){ // -zoom
int x=(vo_flags&VFCAP_SWSCALE) ? 0 : 1;
if(d_width<width || d_height<height){
// downscale!
if(vo_flags&VFCAP_HWSCALE_DOWN) x=0;
} else {
// upscale:
if(vo_flags&VFCAP_HWSCALE_UP) x=0;
}
if(x){
// user wants sw scaling! (-zoom)
vf->priv->w=d_width;
vf->priv->h=d_height;
}
}
if(vf->priv->noup){
if((vf->priv->w > width) + (vf->priv->h > height) >= vf->priv->noup){
vf->priv->w= width;
vf->priv->h= height;
}
}
if (vf->priv->w <= -8) {
vf->priv->w += 8;
round_w = 1;
}
if (vf->priv->h <= -8) {
vf->priv->h += 8;
round_h = 1;
}
if (vf->priv->w < -3 || vf->priv->h < -3 ||
(vf->priv->w < -1 && vf->priv->h < -1)) {
// TODO: establish a direct connection to the user's brain
// and find out what the heck he thinks MPlayer should do
// with this nonsense.
mp_msg(MSGT_VFILTER, MSGL_ERR, "SwScale: EUSERBROKEN Check your parameters, they make no sense!\n");
return 0;
}
if (vf->priv->w == -1)
vf->priv->w = width;
if (vf->priv->w == 0)
vf->priv->w = d_width;
if (vf->priv->h == -1)
vf->priv->h = height;
if (vf->priv->h == 0)
vf->priv->h = d_height;
if (vf->priv->w == -3)
vf->priv->w = vf->priv->h * width / height;
if (vf->priv->w == -2)
vf->priv->w = vf->priv->h * d_width / d_height;
if (vf->priv->h == -3)
vf->priv->h = vf->priv->w * height / width;
if (vf->priv->h == -2)
vf->priv->h = vf->priv->w * d_height / d_width;
if (round_w)
vf->priv->w = ((vf->priv->w + 8) / 16) * 16;
if (round_h)
vf->priv->h = ((vf->priv->h + 8) / 16) * 16;
// calculate the missing parameters:
switch(best) {
case IMGFMT_YV12: /* YV12 needs w & h rounded to 2 */
case IMGFMT_I420:
case IMGFMT_IYUV:
case IMGFMT_NV12:
case IMGFMT_NV21:
vf->priv->h = (vf->priv->h + 1) & ~1;
case IMGFMT_YUY2: /* YUY2 needs w rounded to 2 */
case IMGFMT_UYVY:
vf->priv->w = (vf->priv->w + 1) & ~1;
}
mp_msg(MSGT_VFILTER,MSGL_DBG2,"SwScale: scaling %dx%d %s to %dx%d %s \n",
width,height,vo_format_name(outfmt),
vf->priv->w,vf->priv->h,vo_format_name(best));
// free old ctx:
if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
if(vf->priv->ctx2)sws_freeContext(vf->priv->ctx2);
// new swscaler:
sws_getFlagsAndFilterFromCmdLine(&int_sws_flags, &srcFilter, &dstFilter);
int_sws_flags|= vf->priv->v_chr_drop << SWS_SRC_V_CHR_DROP_SHIFT;
int_sws_flags|= vf->priv->accurate_rnd * SWS_ACCURATE_RND;
vf->priv->ctx=sws_getContext(width, height >> vf->priv->interlaced,
sfmt,
vf->priv->w, vf->priv->h >> vf->priv->interlaced,
dfmt,
int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
if(vf->priv->interlaced){
vf->priv->ctx2=sws_getContext(width, height >> 1,
sfmt,
vf->priv->w, vf->priv->h >> 1,
dfmt,
int_sws_flags | get_sws_cpuflags(), srcFilter, dstFilter, vf->priv->param);
}
if(!vf->priv->ctx){
// error...
mp_msg(MSGT_VFILTER,MSGL_WARN,"Couldn't init SwScaler for this setup\n");
return 0;
}
vf->priv->fmt=best;
free(vf->priv->palette);
vf->priv->palette=NULL;
switch(best){
case IMGFMT_RGB8: {
/* set 332 palette for 8 bpp */
vf->priv->palette=malloc(4*256);
for(i=0; i<256; i++){
vf->priv->palette[4*i+0]=4*(i>>6)*21;
vf->priv->palette[4*i+1]=4*((i>>3)&7)*9;
vf->priv->palette[4*i+2]=4*((i&7)&7)*9;
vf->priv->palette[4*i+3]=0;
}
break; }
case IMGFMT_BGR8: {
/* set 332 palette for 8 bpp */
vf->priv->palette=malloc(4*256);
for(i=0; i<256; i++){
vf->priv->palette[4*i+0]=4*(i&3)*21;
vf->priv->palette[4*i+1]=4*((i>>2)&7)*9;
vf->priv->palette[4*i+2]=4*((i>>5)&7)*9;
vf->priv->palette[4*i+3]=0;
}
break; }
case IMGFMT_BGR4:
case IMGFMT_BG4B: {
vf->priv->palette=malloc(4*16);
for(i=0; i<16; i++){
vf->priv->palette[4*i+0]=4*(i&1)*63;
vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
vf->priv->palette[4*i+2]=4*((i>>3)&1)*63;
vf->priv->palette[4*i+3]=0;
}
break; }
case IMGFMT_RGB4:
case IMGFMT_RG4B: {
vf->priv->palette=malloc(4*16);
for(i=0; i<16; i++){
vf->priv->palette[4*i+0]=4*(i>>3)*63;
vf->priv->palette[4*i+1]=4*((i>>1)&3)*21;
vf->priv->palette[4*i+2]=4*((i&1)&1)*63;
vf->priv->palette[4*i+3]=0;
}
break; }
}
if (!opts->screen_size_x && !opts->screen_size_y
&& !(opts->screen_size_xy >= 0.001)) {
// Compute new d_width and d_height, preserving aspect
// while ensuring that both are >= output size in pixels.
if (vf->priv->h * d_width > vf->priv->w * d_height) {
d_width = vf->priv->h * d_width / d_height;
d_height = vf->priv->h;
} else {
d_height = vf->priv->w * d_height / d_width;
d_width = vf->priv->w;
}
//d_width=d_width*vf->priv->w/width;
//d_height=d_height*vf->priv->h/height;
}
return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,best);
}
static void start_slice(struct vf_instance *vf, mp_image_t *mpi){
// printf("start_slice called! flag=%d\n",mpi->flags&MP_IMGFLAG_DRAW_CALLBACK);
if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)) return; // shouldn't happen
// they want slices!!! allocate the buffer.
mpi->priv=vf->dmpi=vf_get_image(vf->next,vf->priv->fmt,
// mpi->type, mpi->flags & (~MP_IMGFLAG_DRAW_CALLBACK),
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
vf->priv->w, vf->priv->h);
}
static void scale(struct SwsContext *sws1, struct SwsContext *sws2, uint8_t *src[MP_MAX_PLANES], int src_stride[MP_MAX_PLANES],
int y, int h, uint8_t *dst[MP_MAX_PLANES], int dst_stride[MP_MAX_PLANES], int interlaced){
const uint8_t *src2[MP_MAX_PLANES]={src[0], src[1], src[2], src[3]};
#if HAVE_BIGENDIAN
uint32_t pal2[256];
if (src[1] && !src[2]){
int i;
for(i=0; i<256; i++)
pal2[i]= bswap_32(((uint32_t*)src[1])[i]);
src2[1]= pal2;
}
#endif
if(interlaced){
int i;
uint8_t *dst2[MP_MAX_PLANES]={dst[0], dst[1], dst[2], dst[3]};
int src_stride2[MP_MAX_PLANES]={2*src_stride[0], 2*src_stride[1], 2*src_stride[2], 2*src_stride[3]};
int dst_stride2[MP_MAX_PLANES]={2*dst_stride[0], 2*dst_stride[1], 2*dst_stride[2], 2*dst_stride[3]};
sws_scale(sws1, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
for(i=0; i<MP_MAX_PLANES; i++){
src2[i] += src_stride[i];
dst2[i] += dst_stride[i];
}
sws_scale(sws2, src2, src_stride2, y>>1, h>>1, dst2, dst_stride2);
}else{
sws_scale(sws1, src2, src_stride, y, h, dst, dst_stride);
}
}
static void draw_slice(struct vf_instance *vf,
unsigned char** src, int* stride, int w,int h, int x, int y){
mp_image_t *dmpi=vf->dmpi;
if(!dmpi){
mp_msg(MSGT_VFILTER,MSGL_FATAL,"vf_scale: draw_slice() called with dmpi=NULL (no get_image?)\n");
return;
}
// printf("vf_scale::draw_slice() y=%d h=%d\n",y,h);
scale(vf->priv->ctx, vf->priv->ctx2, src, stride, y, h, dmpi->planes, dmpi->stride, vf->priv->interlaced);
}
static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
mp_image_t *dmpi=mpi->priv;
// printf("vf_scale::put_image(): processing whole frame! dmpi=%p flag=%d\n",
// dmpi, (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK));
if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK && dmpi)){
// hope we'll get DR buffer:
dmpi=vf_get_image(vf->next,vf->priv->fmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
vf->priv->w, vf->priv->h);
scale(vf->priv->ctx, vf->priv->ctx, mpi->planes,mpi->stride,0,mpi->h,dmpi->planes,dmpi->stride, vf->priv->interlaced);
}
if(vf->priv->w==mpi->w && vf->priv->h==mpi->h){
// just conversion, no scaling -> keep postprocessing data
// this way we can apply pp filter to non-yv12 source using scaler
vf_clone_mpi_attributes(dmpi, mpi);
}
if(vf->priv->palette) dmpi->planes[1]=vf->priv->palette; // export palette!
return vf_next_put_image(vf,dmpi, pts);
}
static int control(struct vf_instance *vf, int request, void* data){
int *table;
int *inv_table;
int r;
int brightness, contrast, saturation, srcRange, dstRange;
vf_equalizer_t *eq;
if(vf->priv->ctx)
switch(request){
case VFCTRL_GET_EQUALIZER:
r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
if(r<0) break;
eq = data;
if (!strcmp(eq->item,"brightness")) {
eq->value = ((brightness*100) + (1<<15))>>16;
}
else if (!strcmp(eq->item,"contrast")) {
eq->value = (((contrast *100) + (1<<15))>>16) - 100;
}
else if (!strcmp(eq->item,"saturation")) {
eq->value = (((saturation*100) + (1<<15))>>16) - 100;
}
else
break;
return CONTROL_TRUE;
case VFCTRL_SET_EQUALIZER:
r= sws_getColorspaceDetails(vf->priv->ctx, &inv_table, &srcRange, &table, &dstRange, &brightness, &contrast, &saturation);
if(r<0) break;
//printf("set %f %f %f\n", brightness/(float)(1<<16), contrast/(float)(1<<16), saturation/(float)(1<<16));
eq = data;
if (!strcmp(eq->item,"brightness")) {
brightness = (( eq->value <<16) + 50)/100;
}
else if (!strcmp(eq->item,"contrast")) {
contrast = (((eq->value+100)<<16) + 50)/100;
}
else if (!strcmp(eq->item,"saturation")) {
saturation = (((eq->value+100)<<16) + 50)/100;
}
else
break;
r= sws_setColorspaceDetails(vf->priv->ctx, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
if(r<0) break;
if(vf->priv->ctx2){
r= sws_setColorspaceDetails(vf->priv->ctx2, inv_table, srcRange, table, dstRange, brightness, contrast, saturation);
if(r<0) break;
}
return CONTROL_TRUE;
case VFCTRL_SET_YUV_COLORSPACE: {
struct mp_csp_details colorspace = *(struct mp_csp_details *)data;
if (mp_sws_set_colorspace(vf->priv->ctx, &colorspace) >= 0) {
if (vf->priv->ctx2)
mp_sws_set_colorspace(vf->priv->ctx2, &colorspace);
vf->priv->colorspace = colorspace;
return 1;
}
break;
}
case VFCTRL_GET_YUV_COLORSPACE: {
/* This scale filter should never react to colorspace commands if it
* doesn't do YUV->RGB conversion. But because finding out whether this
* is really YUV->RGB (and not YUV->YUV or anything else) is hard,
* react only if the colorspace has been set explicitly before. The
* trick is that mp_sws_set_colorspace does not succeed for YUV->YUV
* and RGB->YUV conversions, which makes this code correct in "most"
* cases. (This would be trivial to do correctly if libswscale exposed
* functionality like isYUV()).
*/
if (vf->priv->colorspace.format) {
*(struct mp_csp_details *)data = vf->priv->colorspace;
return CONTROL_TRUE;
}
break;
}
default:
break;
}
return vf_next_control(vf,request,data);
}
static const int mp_csp_to_swscale[MP_CSP_COUNT] = {
[MP_CSP_BT_601] = SWS_CS_ITU601,
[MP_CSP_BT_709] = SWS_CS_ITU709,
[MP_CSP_SMPTE_240M] = SWS_CS_SMPTE240M,
};
// Adjust the colorspace used for YUV->RGB conversion. On other conversions,
// do nothing or return an error.
// The csp argument is set to the supported values.
// Return 0 on success and -1 on error.
int mp_sws_set_colorspace(struct SwsContext *sws, struct mp_csp_details *csp)
{
int *table, *inv_table;
int brightness, contrast, saturation, srcRange, dstRange;
csp->levels_out = MP_CSP_LEVELS_PC;
// NOTE: returns an error if the destination format is YUV
if (sws_getColorspaceDetails(sws, &inv_table, &srcRange, &table, &dstRange,
&brightness, &contrast, &saturation) == -1)
goto error_out;
int sws_csp = mp_csp_to_swscale[csp->format];
if (sws_csp == 0) {
// colorspace not supported, go with a reasonable default
csp->format = SWS_CS_ITU601;
sws_csp = MP_CSP_BT_601;
}
/* The swscale API for these is hardly documented.
* Apparently table/range only apply to YUV. Thus dstRange has no effect
* for YUV->RGB conversions, and conversions to limited-range RGB are
* not supported.
*/
srcRange = csp->levels_in == MP_CSP_LEVELS_PC;
const int *new_inv_table = sws_getCoefficients(sws_csp);
if (sws_setColorspaceDetails(sws, new_inv_table, srcRange, table, dstRange,
brightness, contrast, saturation) == -1)
goto error_out;
return 0;
error_out:
*csp = (struct mp_csp_details){0};
return -1;
}
//===========================================================================//
// supported Input formats: YV12, I420, IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
static int query_format(struct vf_instance *vf, unsigned int fmt){
if (!IMGFMT_IS_HWACCEL(fmt) && imgfmt2pixfmt(fmt) != PIX_FMT_NONE) {
unsigned int best=find_best_out(vf, fmt);
int flags;
if(!best) return 0; // no matching out-fmt
flags=vf_next_query_format(vf,best);
if(!(flags&(VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW))) return 0; // huh?
if(fmt!=best) flags&=~VFCAP_CSP_SUPPORTED_BY_HW;
// do not allow scaling, if we are before the PP fliter!
if(!(flags&VFCAP_POSTPROC)) flags|=VFCAP_SWSCALE;
return flags;
}
return 0; // nomatching in-fmt
}
static void uninit(struct vf_instance *vf){
if(vf->priv->ctx) sws_freeContext(vf->priv->ctx);
if(vf->priv->ctx2) sws_freeContext(vf->priv->ctx2);
free(vf->priv->palette);
free(vf->priv);
}
static int vf_open(vf_instance_t *vf, char *args){
vf->config=config;
vf->start_slice=start_slice;
vf->draw_slice=draw_slice;
vf->put_image=put_image;
vf->query_format=query_format;
vf->control= control;
vf->uninit=uninit;
mp_msg(MSGT_VFILTER,MSGL_V,"SwScale params: %d x %d (-1=no scaling)\n",
vf->priv->cfg_w,
vf->priv->cfg_h);
return 1;
}
//global sws_flags from the command line
int sws_flags=2;
//global srcFilter
static SwsFilter *src_filter= NULL;
float sws_lum_gblur= 0.0;
float sws_chr_gblur= 0.0;
int sws_chr_vshift= 0;
int sws_chr_hshift= 0;
float sws_chr_sharpen= 0.0;
float sws_lum_sharpen= 0.0;
int get_sws_cpuflags(void){
return
(gCpuCaps.hasMMX ? SWS_CPU_CAPS_MMX : 0)
| (gCpuCaps.hasMMX2 ? SWS_CPU_CAPS_MMX2 : 0)
| (gCpuCaps.has3DNow ? SWS_CPU_CAPS_3DNOW : 0)
| (gCpuCaps.hasAltiVec ? SWS_CPU_CAPS_ALTIVEC : 0);
}
void sws_getFlagsAndFilterFromCmdLine(int *flags, SwsFilter **srcFilterParam, SwsFilter **dstFilterParam)
{
static int firstTime=1;
*flags=0;
#if ARCH_X86
if(gCpuCaps.hasMMX)
__asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
#endif
if(firstTime)
{
firstTime=0;
*flags= SWS_PRINT_INFO;
}
else if( mp_msg_test(MSGT_VFILTER,MSGL_DBG2) ) *flags= SWS_PRINT_INFO;
if(src_filter) sws_freeFilter(src_filter);
src_filter= sws_getDefaultFilter(
sws_lum_gblur, sws_chr_gblur,
sws_lum_sharpen, sws_chr_sharpen,
sws_chr_hshift, sws_chr_vshift, verbose>1);
switch(sws_flags)
{
case 0: *flags|= SWS_FAST_BILINEAR; break;
case 1: *flags|= SWS_BILINEAR; break;
case 2: *flags|= SWS_BICUBIC; break;
case 3: *flags|= SWS_X; break;
case 4: *flags|= SWS_POINT; break;
case 5: *flags|= SWS_AREA; break;
case 6: *flags|= SWS_BICUBLIN; break;
case 7: *flags|= SWS_GAUSS; break;
case 8: *flags|= SWS_SINC; break;
case 9: *flags|= SWS_LANCZOS; break;
case 10:*flags|= SWS_SPLINE; break;
default:*flags|= SWS_BILINEAR; break;
}
*srcFilterParam= src_filter;
*dstFilterParam= NULL;
}
// will use sws_flags & src_filter (from cmd line)
struct SwsContext *sws_getContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
{
int flags;
SwsFilter *dstFilterParam, *srcFilterParam;
enum PixelFormat dfmt, sfmt;
dfmt = imgfmt2pixfmt(dstFormat);
sfmt = imgfmt2pixfmt(srcFormat);
if (srcFormat == IMGFMT_RGB8 || srcFormat == IMGFMT_BGR8) sfmt = PIX_FMT_PAL8;
sws_getFlagsAndFilterFromCmdLine(&flags, &srcFilterParam, &dstFilterParam);
return sws_getContext(srcW, srcH, sfmt, dstW, dstH, dfmt, flags | get_sws_cpuflags(), srcFilterParam, dstFilterParam, NULL);
}
/// An example of presets usage
static const struct size_preset {
char* name;
int w, h;
} vf_size_presets_defs[] = {
// TODO add more 'standard' resolutions
{ "qntsc", 352, 240 },
{ "qpal", 352, 288 },
{ "ntsc", 720, 480 },
{ "pal", 720, 576 },
{ "sntsc", 640, 480 },
{ "spal", 768, 576 },
{ NULL, 0, 0}
};
#define ST_OFF(f) M_ST_OFF(struct size_preset,f)
static const m_option_t vf_size_preset_fields[] = {
{"w", ST_OFF(w), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
{"h", ST_OFF(h), CONF_TYPE_INT, M_OPT_MIN,1 ,0, NULL},
{ NULL, NULL, 0, 0, 0, 0, NULL }
};
static const m_struct_t vf_size_preset = {
"scale_size_preset",
sizeof(struct size_preset),
NULL,
vf_size_preset_fields
};
static const m_struct_t vf_opts;
static const m_obj_presets_t size_preset = {
&vf_size_preset, // Input struct desc
&vf_opts, // Output struct desc
vf_size_presets_defs, // The list of presets
ST_OFF(name) // At wich offset is the name field in the preset struct
};
/// Now the options
#undef ST_OFF
#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
static const m_option_t vf_opts_fields[] = {
{"w", ST_OFF(cfg_w), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
{"h", ST_OFF(cfg_h), CONF_TYPE_INT, M_OPT_MIN,-11,0, NULL},
{"interlaced", ST_OFF(interlaced), CONF_TYPE_INT, M_OPT_RANGE, 0, 1, NULL},
{"chr-drop", ST_OFF(v_chr_drop), CONF_TYPE_INT, M_OPT_RANGE, 0, 3, NULL},
{"param" , ST_OFF(param[0]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
{"param2", ST_OFF(param[1]), CONF_TYPE_DOUBLE, M_OPT_RANGE, 0.0, 100.0, NULL},
// Note that here the 2 field is NULL (ie 0)
// As we want this option to act on the option struct itself
{"presize", 0, CONF_TYPE_OBJ_PRESETS, 0, 0, 0, (void *)&size_preset},
{"noup", ST_OFF(noup), CONF_TYPE_INT, M_OPT_RANGE, 0, 2, NULL},
{"arnd", ST_OFF(accurate_rnd), CONF_TYPE_FLAG, 0, 0, 1, NULL},
{ NULL, NULL, 0, 0, 0, 0, NULL }
};
static const m_struct_t vf_opts = {
"scale",
sizeof(struct vf_priv_s),
&vf_priv_dflt,
vf_opts_fields
};
const vf_info_t vf_info_scale = {
"software scaling",
"scale",
"A'rpi",
"",
vf_open,
&vf_opts
};
//===========================================================================//
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