mirror of https://git.ffmpeg.org/ffmpeg.git
653 lines
25 KiB
Objective-C
653 lines
25 KiB
Objective-C
/*
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* Copyright (c) 2016 Thilo Borgmann
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Video processing based on Apple's CoreImage API
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*/
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#import <CoreImage/CoreImage.h>
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#import <AppKit/AppKit.h>
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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#include "libavutil/internal.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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typedef struct CoreImageContext {
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const AVClass *class;
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int is_video_source; ///< filter is used as video source
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int w, h; ///< video size
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AVRational sar; ///< sample aspect ratio
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AVRational frame_rate; ///< video frame rate
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AVRational time_base; ///< stream time base
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int64_t duration; ///< duration expressed in microseconds
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int64_t pts; ///< increasing presentation time stamp
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AVFrame *picref; ///< cached reference containing the painted picture
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CFTypeRef glctx; ///< OpenGL context
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CGContextRef cgctx; ///< Bitmap context for image copy
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CFTypeRef input_image; ///< Input image container for passing into Core Image API
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CGColorSpaceRef color_space; ///< Common color space for input image and cgcontext
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int bits_per_component; ///< Shared bpc for input-output operation
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char *filter_string; ///< The complete user provided filter definition
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CFTypeRef *filters; ///< CIFilter object for all requested filters
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int num_filters; ///< Amount of filters in *filters
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char *output_rect; ///< Rectangle to be filled with filter intput
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int list_filters; ///< Option used to list all available filters including generators
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int list_generators; ///< Option used to list all available generators
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} CoreImageContext;
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static int config_output(AVFilterLink *link)
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{
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CoreImageContext *ctx = link->src->priv;
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link->w = ctx->w;
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link->h = ctx->h;
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link->sample_aspect_ratio = ctx->sar;
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link->frame_rate = ctx->frame_rate;
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link->time_base = ctx->time_base;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
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ctx->bits_per_component = av_get_bits_per_pixel(desc) / desc->nb_components;
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return 0;
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}
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/** Determine image properties from input link of filter chain.
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*/
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static int config_input(AVFilterLink *link)
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{
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CoreImageContext *ctx = link->dst->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
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ctx->bits_per_component = av_get_bits_per_pixel(desc) / desc->nb_components;
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return 0;
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}
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/** Print a list of all available filters including options and respective value ranges and defaults.
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*/
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static void list_filters(CoreImageContext *ctx)
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{
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// querying filters and attributes
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NSArray *filter_categories = nil;
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if (ctx->list_generators && !ctx->list_filters) {
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filter_categories = [NSArray arrayWithObjects:kCICategoryGenerator, nil];
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}
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NSArray *filter_names = [CIFilter filterNamesInCategories:filter_categories];
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NSEnumerator *filters = [filter_names objectEnumerator];
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NSString *filter_name;
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while (filter_name = [filters nextObject]) {
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av_log(ctx, AV_LOG_INFO, "Filter: %s\n", [filter_name UTF8String]);
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NSString *input;
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CIFilter *filter = [CIFilter filterWithName:filter_name];
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NSDictionary *filter_attribs = [filter attributes]; // <nsstring, id>
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NSArray *filter_inputs = [filter inputKeys]; // <nsstring>
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for (input in filter_inputs) {
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NSDictionary *input_attribs = [filter_attribs valueForKey:input];
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NSString *input_class = [input_attribs valueForKey:kCIAttributeClass];
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if ([input_class isEqualToString:@"NSNumber"]) {
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NSNumber *value_default = [input_attribs valueForKey:kCIAttributeDefault];
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NSNumber *value_min = [input_attribs valueForKey:kCIAttributeSliderMin];
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NSNumber *value_max = [input_attribs valueForKey:kCIAttributeSliderMax];
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av_log(ctx, AV_LOG_INFO, "\tOption: %s\t[%s]\t[%s %s][%s]\n",
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[input UTF8String],
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[input_class UTF8String],
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[[value_min stringValue] UTF8String],
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[[value_max stringValue] UTF8String],
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[[value_default stringValue] UTF8String]);
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} else {
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av_log(ctx, AV_LOG_INFO, "\tOption: %s\t[%s]\n",
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[input UTF8String],
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[input_class UTF8String]);
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}
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}
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}
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}
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static int apply_filter(CoreImageContext *ctx, AVFilterLink *link, AVFrame *frame)
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{
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int i;
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// (re-)initialize input image
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const CGSize frame_size = {
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frame->width,
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frame->height
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};
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NSData *data = [NSData dataWithBytesNoCopy:frame->data[0]
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length:frame->height*frame->linesize[0]
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freeWhenDone:NO];
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CIImage *ret = [(__bridge CIImage*)ctx->input_image initWithBitmapData:data
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bytesPerRow:frame->linesize[0]
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size:frame_size
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format:kCIFormatARGB8
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colorSpace:ctx->color_space]; //kCGColorSpaceGenericRGB
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if (!ret) {
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av_log(ctx, AV_LOG_ERROR, "Input image could not be initialized.\n");
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return AVERROR_EXTERNAL;
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}
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CIFilter *filter = NULL;
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CIImage *filter_input = (__bridge CIImage*)ctx->input_image;
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CIImage *filter_output = NULL;
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// successively apply all filters
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for (i = 0; i < ctx->num_filters; i++) {
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if (i) {
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// set filter input to previous filter output
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filter_input = [(__bridge CIImage*)ctx->filters[i-1] valueForKey:kCIOutputImageKey];
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CGRect out_rect = [filter_input extent];
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if (out_rect.size.width > frame->width || out_rect.size.height > frame->height) {
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// do not keep padded image regions after filtering
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out_rect.origin.x = 0.0f;
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out_rect.origin.y = 0.0f;
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out_rect.size.width = frame->width;
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out_rect.size.height = frame->height;
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}
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filter_input = [filter_input imageByCroppingToRect:out_rect];
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}
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filter = (__bridge CIFilter*)ctx->filters[i];
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// do not set input image for the first filter if used as video source
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if (!ctx->is_video_source || i) {
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@try {
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[filter setValue:filter_input forKey:kCIInputImageKey];
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} @catch (NSException *exception) {
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if (![[exception name] isEqualToString:NSUndefinedKeyException]) {
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av_log(ctx, AV_LOG_ERROR, "An error occurred: %s.", [exception.reason UTF8String]);
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return AVERROR_EXTERNAL;
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} else {
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av_log(ctx, AV_LOG_WARNING, "Selected filter does not accept an input image.\n");
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}
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}
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}
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}
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// get output of last filter
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filter_output = [filter valueForKey:kCIOutputImageKey];
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if (!filter_output) {
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av_log(ctx, AV_LOG_ERROR, "Filter output not available.\n");
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return AVERROR_EXTERNAL;
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}
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// do not keep padded image regions after filtering
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CGRect out_rect = [filter_output extent];
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if (out_rect.size.width > frame->width || out_rect.size.height > frame->height) {
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av_log(ctx, AV_LOG_DEBUG, "Cropping output image.\n");
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out_rect.origin.x = 0.0f;
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out_rect.origin.y = 0.0f;
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out_rect.size.width = frame->width;
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out_rect.size.height = frame->height;
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}
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CGImageRef out = [(__bridge CIContext*)ctx->glctx createCGImage:filter_output
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fromRect:out_rect];
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if (!out) {
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av_log(ctx, AV_LOG_ERROR, "Cannot create valid output image.\n");
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}
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// create bitmap context on the fly for rendering into current frame->data[]
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if (ctx->cgctx) {
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CGContextRelease(ctx->cgctx);
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ctx->cgctx = NULL;
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}
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size_t out_width = CGImageGetWidth(out);
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size_t out_height = CGImageGetHeight(out);
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if (out_width > frame->width || out_height > frame->height) { // this might result in segfault
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av_log(ctx, AV_LOG_WARNING, "Output image has unexpected size: %lux%lu (expected: %ix%i). This may crash...\n",
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out_width, out_height, frame->width, frame->height);
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}
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ctx->cgctx = CGBitmapContextCreate(frame->data[0],
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frame->width,
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frame->height,
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ctx->bits_per_component,
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frame->linesize[0],
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ctx->color_space,
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(uint32_t)kCGImageAlphaPremultipliedFirst); // ARGB
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if (!ctx->cgctx) {
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av_log(ctx, AV_LOG_ERROR, "CGBitmap context cannot be created.\n");
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return AVERROR_EXTERNAL;
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}
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// copy ("draw") the output image into the frame data
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CGRect rect = {{0,0},{frame->width, frame->height}};
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if (ctx->output_rect) {
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@try {
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NSString *tmp_string = [NSString stringWithUTF8String:ctx->output_rect];
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NSRect tmp = NSRectFromString(tmp_string);
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rect = NSRectToCGRect(tmp);
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} @catch (NSException *exception) {
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av_log(ctx, AV_LOG_ERROR, "An error occurred: %s.", [exception.reason UTF8String]);
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return AVERROR_EXTERNAL;
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}
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if (rect.size.width == 0.0f) {
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av_log(ctx, AV_LOG_WARNING, "Width of output rect is zero.\n");
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}
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if (rect.size.height == 0.0f) {
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av_log(ctx, AV_LOG_WARNING, "Height of output rect is zero.\n");
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}
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}
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CGContextDrawImage(ctx->cgctx, rect, out);
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return ff_filter_frame(link, frame);
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}
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/** Apply all valid filters successively to the input image.
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* The final output image is copied from the GPU by "drawing" using a bitmap context.
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*/
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static int filter_frame(AVFilterLink *link, AVFrame *frame)
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{
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return apply_filter(link->dst->priv, link->dst->outputs[0], frame);
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}
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static int request_frame(AVFilterLink *link)
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{
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CoreImageContext *ctx = link->src->priv;
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AVFrame *frame;
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if (ctx->duration >= 0 &&
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av_rescale_q(ctx->pts, ctx->time_base, AV_TIME_BASE_Q) >= ctx->duration) {
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return AVERROR_EOF;
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}
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if (!ctx->picref) {
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ctx->picref = ff_get_video_buffer(link, ctx->w, ctx->h);
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if (!ctx->picref) {
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return AVERROR(ENOMEM);
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}
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}
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frame = av_frame_clone(ctx->picref);
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if (!frame) {
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return AVERROR(ENOMEM);
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}
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frame->pts = ctx->pts;
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frame->duration = 1;
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#if FF_API_FRAME_KEY
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frame->key_frame = 1;
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#endif
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frame->flags |= AV_FRAME_FLAG_KEY;
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#if FF_API_INTERLACED_FRAME
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frame->interlaced_frame = 0;
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#endif
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frame->flags &= ~AV_FRAME_FLAG_INTERLACED;
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frame->pict_type = AV_PICTURE_TYPE_I;
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frame->sample_aspect_ratio = ctx->sar;
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ctx->pts++;
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return apply_filter(ctx, link, frame);
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}
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/** Set an option of the given filter to the provided key-value pair.
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*/
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static void set_option(CoreImageContext *ctx, CIFilter *filter, const char *key, const char *value)
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{
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NSString *input_key = [NSString stringWithUTF8String:key];
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NSString *input_val = [NSString stringWithUTF8String:value];
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NSDictionary *filter_attribs = [filter attributes]; // <nsstring, id>
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NSDictionary *input_attribs = [filter_attribs valueForKey:input_key];
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NSString *input_class = [input_attribs valueForKey:kCIAttributeClass];
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NSString *input_type = [input_attribs valueForKey:kCIAttributeType];
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if (!input_attribs) {
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av_log(ctx, AV_LOG_WARNING, "Skipping unknown option: \"%s\".\n",
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[input_key UTF8String]); // [[filter name] UTF8String]) not currently defined...
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return;
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}
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av_log(ctx, AV_LOG_DEBUG, "key: %s, val: %s, #attribs: %lu, class: %s, type: %s\n",
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[input_key UTF8String],
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[input_val UTF8String],
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input_attribs ? (unsigned long)[input_attribs count] : -1,
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[input_class UTF8String],
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[input_type UTF8String]);
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if ([input_class isEqualToString:@"NSNumber"]) {
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float input = input_val.floatValue;
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NSNumber *max_value = [input_attribs valueForKey:kCIAttributeSliderMax];
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NSNumber *min_value = [input_attribs valueForKey:kCIAttributeSliderMin];
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NSNumber *used_value = nil;
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#define CLAMP_WARNING do { \
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av_log(ctx, AV_LOG_WARNING, "Value of \"%f\" for option \"%s\" is out of range [%f %f], clamping to \"%f\".\n", \
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input, \
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[input_key UTF8String], \
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min_value.floatValue, \
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max_value.floatValue, \
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used_value.floatValue); \
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} while(0)
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if (input > max_value.floatValue) {
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used_value = max_value;
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CLAMP_WARNING;
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} else if (input < min_value.floatValue) {
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used_value = min_value;
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CLAMP_WARNING;
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} else {
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used_value = [NSNumber numberWithFloat:input];
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}
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[filter setValue:used_value forKey:input_key];
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} else if ([input_class isEqualToString:@"CIVector"]) {
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CIVector *input = [CIVector vectorWithString:input_val];
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if (!input) {
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av_log(ctx, AV_LOG_WARNING, "Skipping invalid CIVctor description: \"%s\".\n",
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[input_val UTF8String]);
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return;
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}
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[filter setValue:input forKey:input_key];
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} else if ([input_class isEqualToString:@"CIColor"]) {
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CIColor *input = [CIColor colorWithString:input_val];
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if (!input) {
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av_log(ctx, AV_LOG_WARNING, "Skipping invalid CIColor description: \"%s\".\n",
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[input_val UTF8String]);
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return;
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}
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[filter setValue:input forKey:input_key];
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} else if ([input_class isEqualToString:@"NSString"]) { // set display name as string with latin1 encoding
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[filter setValue:input_val forKey:input_key];
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} else if ([input_class isEqualToString:@"NSData"]) { // set display name as string with latin1 encoding
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NSData *input = [NSData dataWithBytes:(const void*)[input_val cStringUsingEncoding:NSISOLatin1StringEncoding]
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length:[input_val lengthOfBytesUsingEncoding:NSISOLatin1StringEncoding]];
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if (!input) {
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av_log(ctx, AV_LOG_WARNING, "Skipping invalid NSData description: \"%s\".\n",
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[input_val UTF8String]);
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return;
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}
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[filter setValue:input forKey:input_key];
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} else {
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av_log(ctx, AV_LOG_WARNING, "Skipping unsupported option class: \"%s\".\n",
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[input_class UTF8String]);
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avpriv_report_missing_feature(ctx, "Handling of some option classes");
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return;
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}
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}
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/** Create a filter object by a given name and set all options to defaults.
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* Overwrite any option given by the user to the provided value in filter_options.
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*/
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static CIFilter* create_filter(CoreImageContext *ctx, const char *filter_name, AVDictionary *filter_options)
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{
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// create filter object
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CIFilter *filter = [CIFilter filterWithName:[NSString stringWithUTF8String:filter_name]];
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// set default options
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[filter setDefaults];
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// set user options
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if (filter_options) {
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const AVDictionaryEntry *o = NULL;
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while ((o = av_dict_iterate(filter_options, o))) {
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set_option(ctx, filter, o->key, o->value);
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}
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}
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return filter;
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}
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static av_cold int init(AVFilterContext *fctx)
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{
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CoreImageContext *ctx = fctx->priv;
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AVDictionary *filter_dict = NULL;
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const AVDictionaryEntry *f = NULL;
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const AVDictionaryEntry *o = NULL;
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int ret;
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int i;
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if (ctx->list_filters || ctx->list_generators) {
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list_filters(ctx);
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return AVERROR_EXIT;
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}
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if (ctx->filter_string) {
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// parse filter string (filter=name@opt=val@opt2=val2#name2@opt3=val3) for filters separated by #
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av_log(ctx, AV_LOG_DEBUG, "Filter_string: %s\n", ctx->filter_string);
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ret = av_dict_parse_string(&filter_dict, ctx->filter_string, "@", "#", AV_DICT_MULTIKEY); // parse filter_name:all_filter_options
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if (ret) {
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av_dict_free(&filter_dict);
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av_log(ctx, AV_LOG_ERROR, "Parsing of filters failed.\n");
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return AVERROR(EIO);
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}
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ctx->num_filters = av_dict_count(filter_dict);
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av_log(ctx, AV_LOG_DEBUG, "Filter count: %i\n", ctx->num_filters);
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// allocate CIFilter array
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ctx->filters = av_calloc(ctx->num_filters, sizeof(CIFilter*));
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if (!ctx->filters) {
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av_log(ctx, AV_LOG_ERROR, "Could not allocate filter array.\n");
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return AVERROR(ENOMEM);
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}
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// parse filters for option key-value pairs (opt=val@opt2=val2) separated by @
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i = 0;
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while ((f = av_dict_iterate(filter_dict, f))) {
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AVDictionary *filter_options = NULL;
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|
|
if (strncmp(f->value, "default", 7)) { // not default
|
|
ret = av_dict_parse_string(&filter_options, f->value, "=", "@", 0); // parse option_name:option_value
|
|
if (ret) {
|
|
av_dict_free(&filter_options);
|
|
av_log(ctx, AV_LOG_ERROR, "Parsing of filter options for \"%s\" failed.\n", f->key);
|
|
return AVERROR(EIO);
|
|
}
|
|
}
|
|
|
|
if (av_log_get_level() >= AV_LOG_DEBUG) {
|
|
av_log(ctx, AV_LOG_DEBUG, "Creating filter %i: \"%s\":\n", i, f->key);
|
|
if (!filter_options) {
|
|
av_log(ctx, AV_LOG_DEBUG, "\tusing default options\n");
|
|
} else {
|
|
while ((o = av_dict_iterate(filter_options, o))) {
|
|
av_log(ctx, AV_LOG_DEBUG, "\t%s: %s\n", o->key, o->value);
|
|
}
|
|
}
|
|
}
|
|
|
|
ctx->filters[i] = CFBridgingRetain(create_filter(ctx, f->key, filter_options));
|
|
if (!ctx->filters[i]) {
|
|
av_log(ctx, AV_LOG_ERROR, "Could not create filter \"%s\".\n", f->key);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
i++;
|
|
}
|
|
} else {
|
|
av_log(ctx, AV_LOG_ERROR, "No filters specified.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
// create GPU context on OSX
|
|
const NSOpenGLPixelFormatAttribute attr[] = {
|
|
NSOpenGLPFAAccelerated,
|
|
NSOpenGLPFANoRecovery,
|
|
NSOpenGLPFAColorSize, 32,
|
|
0
|
|
};
|
|
|
|
NSOpenGLPixelFormat *pixel_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:(void *)&attr];
|
|
ctx->color_space = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
|
|
ctx->glctx = CFBridgingRetain([CIContext contextWithCGLContext:CGLGetCurrentContext()
|
|
pixelFormat:[pixel_format CGLPixelFormatObj]
|
|
colorSpace:ctx->color_space
|
|
options:nil]);
|
|
|
|
if (!ctx->glctx) {
|
|
av_log(ctx, AV_LOG_ERROR, "CIContext not created.\n");
|
|
return AVERROR_EXTERNAL;
|
|
}
|
|
|
|
// Creating an empty input image as input container for the context
|
|
ctx->input_image = CFBridgingRetain([CIImage emptyImage]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int init_src(AVFilterContext *fctx)
|
|
{
|
|
CoreImageContext *ctx = fctx->priv;
|
|
|
|
ctx->is_video_source = 1;
|
|
ctx->time_base = av_inv_q(ctx->frame_rate);
|
|
ctx->pts = 0;
|
|
|
|
return init(fctx);
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *fctx)
|
|
{
|
|
#define SafeCFRelease(ptr) do { \
|
|
if (ptr) { \
|
|
CFRelease(ptr); \
|
|
ptr = NULL; \
|
|
} \
|
|
} while (0)
|
|
|
|
CoreImageContext *ctx = fctx->priv;
|
|
|
|
SafeCFRelease(ctx->glctx);
|
|
SafeCFRelease(ctx->cgctx);
|
|
SafeCFRelease(ctx->color_space);
|
|
SafeCFRelease(ctx->input_image);
|
|
|
|
if (ctx->filters) {
|
|
for (int i = 0; i < ctx->num_filters; i++) {
|
|
SafeCFRelease(ctx->filters[i]);
|
|
}
|
|
av_freep(&ctx->filters);
|
|
}
|
|
|
|
av_frame_free(&ctx->picref);
|
|
}
|
|
|
|
static const AVFilterPad vf_coreimage_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
},
|
|
};
|
|
|
|
static const AVFilterPad vf_coreimage_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
};
|
|
|
|
static const AVFilterPad vsrc_coreimagesrc_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.request_frame = request_frame,
|
|
.config_props = config_output,
|
|
},
|
|
};
|
|
|
|
#define OFFSET(x) offsetof(CoreImageContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
|
|
|
|
#define GENERATOR_OPTIONS \
|
|
{"size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "320x240"}, 0, 0, FLAGS}, \
|
|
{"s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "320x240"}, 0, 0, FLAGS}, \
|
|
{"rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS}, \
|
|
{"r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS}, \
|
|
{"duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS}, \
|
|
{"d", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS}, \
|
|
{"sar", "set video sample aspect ratio", OFFSET(sar), AV_OPT_TYPE_RATIONAL, {.dbl = 1}, 0, INT_MAX, FLAGS},
|
|
|
|
#define FILTER_OPTIONS \
|
|
{"list_filters", "list available filters", OFFSET(list_filters), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, .flags = FLAGS}, \
|
|
{"list_generators", "list available generators", OFFSET(list_generators), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, .flags = FLAGS}, \
|
|
{"filter", "names and options of filters to apply", OFFSET(filter_string), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS}, \
|
|
{"output_rect", "output rectangle within output image", OFFSET(output_rect), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS},
|
|
|
|
|
|
// definitions for coreimage video filter
|
|
static const AVOption coreimage_options[] = {
|
|
FILTER_OPTIONS
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(coreimage);
|
|
|
|
const AVFilter ff_vf_coreimage = {
|
|
.name = "coreimage",
|
|
.description = NULL_IF_CONFIG_SMALL("Video filtering using CoreImage API."),
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.priv_size = sizeof(CoreImageContext),
|
|
.priv_class = &coreimage_class,
|
|
FILTER_INPUTS(vf_coreimage_inputs),
|
|
FILTER_OUTPUTS(vf_coreimage_outputs),
|
|
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_ARGB),
|
|
};
|
|
|
|
// definitions for coreimagesrc video source
|
|
static const AVOption coreimagesrc_options[] = {
|
|
GENERATOR_OPTIONS
|
|
FILTER_OPTIONS
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(coreimagesrc);
|
|
|
|
const AVFilter ff_vsrc_coreimagesrc = {
|
|
.name = "coreimagesrc",
|
|
.description = NULL_IF_CONFIG_SMALL("Video source using image generators of CoreImage API."),
|
|
.init = init_src,
|
|
.uninit = uninit,
|
|
.priv_size = sizeof(CoreImageContext),
|
|
.priv_class = &coreimagesrc_class,
|
|
.inputs = NULL,
|
|
FILTER_OUTPUTS(vsrc_coreimagesrc_outputs),
|
|
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_ARGB),
|
|
};
|