146 lines
3.7 KiB
Objective-C
146 lines
3.7 KiB
Objective-C
//
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// FFMPEGFileProtocols.m
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// FFMPEG
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//
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// Created by Christopher Snowhill on 10/4/13.
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// Copyright 2013 __NoWork, Inc__. All rights reserved.
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//
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#include "Plugin.h"
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#define __FRAMEWORK__
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#import <FFMPEG/avformat.h>
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#import <FFMPEG/url.h>
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#import <FFMPEG/opt.h>
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#undef __FRAMEWORK__
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/* standard file protocol */
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typedef struct FileContext {
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const AVClass *class;
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id<CogSource> fd;
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} FileContext;
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static const AVOption file_options[] = {
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{ NULL }
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};
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#define LIBAVUTIL_VERSION_MAJOR 52
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#define LIBAVUTIL_VERSION_MINOR 46
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#define LIBAVUTIL_VERSION_MICRO 100
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#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
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#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
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LIBAVUTIL_VERSION_MINOR, \
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LIBAVUTIL_VERSION_MICRO)
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static const AVClass file_class = {
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.class_name = "file",
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.item_name = av_default_item_name,
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.option = file_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static const AVClass http_class = {
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.class_name = "http",
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.item_name = av_default_item_name,
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.option = file_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static const AVClass unpack_class = {
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.class_name = "unpack",
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.item_name = av_default_item_name,
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.option = file_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static int file_read(URLContext *h, unsigned char *buf, int size)
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{
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FileContext *c = h->priv_data;
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return [c->fd read:buf amount:size];
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}
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static int file_check(URLContext *h, int mask)
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{
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return mask & AVIO_FLAG_READ;
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}
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static int file_open(URLContext *h, const char *filename, int flags)
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{
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FileContext *c = h->priv_data;
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id<CogSource> fd;
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if (flags & AVIO_FLAG_WRITE) {
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return -1;
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}
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NSString * urlString = [NSString stringWithUTF8String:filename];
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NSURL * url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
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id audioSourceClass = NSClassFromString(@"AudioSource");
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fd = [audioSourceClass audioSourceForURL:url];
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if (![fd open:url])
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return -1;
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c->fd = [fd retain];
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return 0;
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}
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/* XXX: use llseek */
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static int64_t file_seek(URLContext *h, int64_t pos, int whence)
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{
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FileContext *c = h->priv_data;
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return [c->fd seek:pos whence:whence] ? [c->fd tell] : -1;
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}
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static int file_close(URLContext *h)
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{
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FileContext *c = h->priv_data;
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[c->fd release];
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return 0;
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}
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URLProtocol ff_file_protocol = {
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.name = "file",
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.url_open = file_open,
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.url_read = file_read,
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.url_seek = file_seek,
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.url_close = file_close,
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.url_check = file_check,
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.priv_data_size = sizeof(FileContext),
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.priv_data_class = &file_class,
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};
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URLProtocol ff_http_protocol = {
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.name = "http",
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.url_open = file_open,
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.url_read = file_read,
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.url_seek = file_seek,
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.url_close = file_close,
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.url_check = file_check,
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.priv_data_size = sizeof(FileContext),
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.priv_data_class = &file_class,
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};
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URLProtocol ff_unpack_protocol = {
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.name = "unpack",
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.url_open = file_open,
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.url_read = file_read,
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.url_seek = file_seek,
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.url_close = file_close,
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.url_check = file_check,
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.priv_data_size = sizeof(FileContext),
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.priv_data_class = &file_class,
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};
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void registerCogProtocols()
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{
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ffurl_register_protocol(&ff_file_protocol, sizeof(ff_file_protocol));
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ffurl_register_protocol(&ff_http_protocol, sizeof(ff_http_protocol));
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ffurl_register_protocol(&ff_unpack_protocol, sizeof(ff_unpack_protocol));
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}
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