metadata_manip.cpp

这是著名的TCPMP播放器在WINDWOWS,和WINCE下编译通过的源程序.笔者对其中的LIBMAD库做了针对ARM MPU的优化. 并增加了词幕功能.

		return die_("copying object");
	padding->set_length(0);
	if(!insert_to_our_metadata_(padding, our_current_position+1, /*copy=*/false))
		return die_("internal error");
	if(!iterator.set_block(app))
		return die_c_("iterator.set_block(app)", chain.status());

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SV[A]P\tshrink APPLICATION, use padding, last block is padding\n");
	if(0 == (app = dynamic_cast<FLAC::Metadata::Application *>(FLAC::Metadata::clone(our_metadata_.blocks[our_current_position]))))
		return die_("copying object");
	if(!app->set_data(data, 16, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	dynamic_cast<FLAC::Metadata::Padding *>(our_metadata_.blocks[our_current_position+1])->set_length(13);
	if(!iterator.set_block(app))
		return die_c_("iterator.set_block(app)", chain.status());

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SV[A]P\tgrow APPLICATION, use padding, last block is padding, but delta is too small\n");
	if(0 == (app = dynamic_cast<FLAC::Metadata::Application *>(FLAC::Metadata::clone(our_metadata_.blocks[our_current_position]))))
		return die_("copying object");
	if(!app->set_data(data, 50, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!iterator.set_block(app))
		return die_c_("iterator.set_block(app)", chain.status());

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SV[A]P\tgrow APPLICATION, use padding, last block is padding of exceeding size\n");
	if(0 == (app = dynamic_cast<FLAC::Metadata::Application *>(FLAC::Metadata::clone(our_metadata_.blocks[our_current_position]))))
		return die_("copying object");
	if(!app->set_data(data, 56, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	add_to_padding_length_(our_current_position+1, -(56 - 50));
	if(!iterator.set_block(app))
		return die_c_("iterator.set_block(app)", chain.status());

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SV[A]P\tgrow APPLICATION, use padding, last block is padding of exact size\n");
	if(0 == (app = dynamic_cast<FLAC::Metadata::Application *>(FLAC::Metadata::clone(our_metadata_.blocks[our_current_position]))))
		return die_("copying object");
	if(!app->set_data(data, 67, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	delete_from_our_metadata_(our_current_position+1);
	if(!iterator.set_block(app))
		return die_c_("iterator.set_block(app)", chain.status());

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SV[A]\tprev\n");
	if(!iterator.prev())
		return die_("iterator ended early\n");
	our_current_position--;

	printf("S[V]A\tprev\n");
	if(!iterator.prev())
		return die_("iterator ended early\n");
	our_current_position--;

	printf("[S]VA\tinsert PADDING before STREAMINFO (should fail)\n");
	if(0 == (padding = new FLAC::Metadata::Padding()))
		return die_("creating PADDING block");
	padding->set_length(30);
	if(!iterator.insert_block_before(padding))
		printf("\titerator.insert_block_before() returned false like it should\n");
	else
		return die_("iterator.insert_block_before() should have returned false");

	printf("[S]VA\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("S[V]A\tinsert PADDING after\n");
	if(!insert_to_our_metadata_(padding, ++our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!iterator.insert_block_after(padding))
		return die_("iterator.insert_block_after(padding)");

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("SV[P]A\tinsert PADDING before\n");
	if(0 == (padding = dynamic_cast<FLAC::Metadata::Padding *>(FLAC::Metadata::clone(our_metadata_.blocks[our_current_position]))))
		return die_("creating PADDING block");
	padding->set_length(17);
	if(!insert_to_our_metadata_(padding, our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!iterator.insert_block_before(padding))
		return die_("iterator.insert_block_before(padding)");

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("SV[P]PA\tinsert PADDING before\n");
	if(0 == (padding = dynamic_cast<FLAC::Metadata::Padding *>(FLAC::Metadata::clone(our_metadata_.blocks[our_current_position]))))
		return die_("creating PADDING block");
	padding->set_length(0);
	if(!insert_to_our_metadata_(padding, our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!iterator.insert_block_before(padding))
		return die_("iterator.insert_block_before(padding)");

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("SV[P]PPA\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SVP[P]PA\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SVPP[P]A\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SVPPP[A]\tinsert PADDING after\n");
	if(0 == (padding = dynamic_cast<FLAC::Metadata::Padding *>(FLAC::Metadata::clone(our_metadata_.blocks[2]))))
		return die_("creating PADDING block");
	padding->set_length(57);
	if(!insert_to_our_metadata_(padding, ++our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!iterator.insert_block_after(padding))
		return die_("iterator.insert_block_after(padding)");

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("SVPPPA[P]\tinsert PADDING before\n");
	if(0 == (padding = dynamic_cast<FLAC::Metadata::Padding *>(FLAC::Metadata::clone(our_metadata_.blocks[2]))))
		return die_("creating PADDING block");
	padding->set_length(99);
	if(!insert_to_our_metadata_(padding, our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!iterator.insert_block_before(padding))
		return die_("iterator.insert_block_before(padding)");

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	}
	our_current_position = 0;

	printf("SVPPPAPP\tmerge padding\n");
	chain.merge_padding();
	add_to_padding_length_(2, FLAC__STREAM_METADATA_HEADER_LENGTH + our_metadata_.blocks[3]->get_length());
	add_to_padding_length_(2, FLAC__STREAM_METADATA_HEADER_LENGTH + our_metadata_.blocks[4]->get_length());
	add_to_padding_length_(6, FLAC__STREAM_METADATA_HEADER_LENGTH + our_metadata_.blocks[7]->get_length());
	delete_from_our_metadata_(7);
	delete_from_our_metadata_(4);
	delete_from_our_metadata_(3);

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	if(!compare_chain_(chain, 0, 0))
		return false;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SVPAP\tsort padding\n");
	chain.sort_padding();
	add_to_padding_length_(4, FLAC__STREAM_METADATA_HEADER_LENGTH + our_metadata_.blocks[2]->get_length());
	delete_from_our_metadata_(2);

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(true, false)", chain.status());
	if(!compare_chain_(chain, 0, 0))
		return false;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("create iterator\n");
	{
	FLAC::Metadata::Iterator iterator;
	if(!iterator.is_valid())
		return die_("allocating memory for iterator");

	our_current_position = 0;

	iterator.init(chain);

	printf("[S]VAP\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("S[V]AP\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SV[A]P\tdelete middle block, replace with padding\n");
	if(0 == (padding = new FLAC::Metadata::Padding()))
		return die_("creating PADDING block");
	padding->set_length(71);
	if(!replace_in_our_metadata_(padding, our_current_position--, /*copy=*/false))
		return die_("copying object");
	if(!iterator.delete_block(/*replace_with_padding=*/true))
		return die_c_("iterator.delete_block(true)", chain.status());

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("S[V]PP\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SV[P]P\tdelete middle block, don't replace with padding\n");
	delete_from_our_metadata_(our_current_position--);
	if(!iterator.delete_block(/*replace_with_padding=*/false))
		return die_c_("iterator.delete_block(false)", chain.status());

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("S[V]P\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SV[P]\tdelete last block, replace with padding\n");
	if(0 == (padding = new FLAC::Metadata::Padding()))
		return die_("creating PADDING block");
	padding->set_length(219);
	if(!replace_in_our_metadata_(padding, our_current_position--, /*copy=*/false))
		return die_("copying object");
	if(!iterator.delete_block(/*replace_with_padding=*/true))
		return die_c_("iterator.delete_block(true)", chain.status());

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("S[V]P\tnext\n");
	if(!iterator.next())
		return die_("iterator ended early\n");
	our_current_position++;

	printf("SV[P]\tdelete last block, don't replace with padding\n");
	delete_from_our_metadata_(our_current_position--);
	if(!iterator.delete_block(/*replace_with_padding=*/false))
		return die_c_("iterator.delete_block(false)", chain.status());

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	printf("S[V]\tprev\n");
	if(!iterator.prev())
		return die_("iterator ended early\n");
	our_current_position--;

	printf("[S]V\tdelete STREAMINFO block, should fail\n");
	if(iterator.delete_block(/*replace_with_padding=*/false))
		return die_("iterator.delete_block() on STREAMINFO should have failed but didn't");

	block = iterator.get_block();
	if(!compare_chain_(chain, our_current_position, block))
		return false;
	delete block;

	} // delete iterator
	our_current_position = 0;

	printf("SV\tmerge padding\n");
	chain.merge_padding();

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(false, false)", chain.status());
	if(!compare_chain_(chain, 0, 0))
		return false;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	printf("SV\tsort padding\n");
	chain.sort_padding();

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during chain.write(false, false)", chain.status());
	if(!compare_chain_(chain, 0, 0))
		return false;
	if(!test_file_(flacfile_, /*ignore_metadata=*/false))
		return false;

	if(!remove_file_(flacfile_))
		return false;

	return true;
}

static bool test_level_2_misc_()
{
	::FLAC__IOCallbacks callbacks;

	memset(&callbacks, 0, sizeof(callbacks));
	callbacks.read = (::FLAC__IOCallback_Read)fread;
#ifdef FLAC__VALGRIND_TESTING
	callbacks.write = chain_write_cb_;
#else
	callbacks.write = (::FLAC__IOCallback_Write)fwrite;
#endif
	callbacks.seek = chain_seek_cb_;
	callbacks.tell = chain_tell_cb_;
	callbacks.eof = chain_eof_cb_;

	printf("\n\n++++++ testing level 2 interface (mismatched read/write protections)\n");

	pri