metadata_manip.c

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.

	unsigned our_current_position;

	/* initialize 'data' to avoid Valgrind errors */
	memset(data, 0, sizeof(data));

	printf("\n\n++++++ testing level 2 interface (%s-based)\n", filename_based? "filename":"callback");

	printf("generate read-only file\n");

	if(!generate_file_())
		return false;

	if(!change_stats_(flacfile_, /*read_only=*/true))
		return false;

	printf("create chain\n");

	if(0 == (chain = FLAC__metadata_chain_new()))
		return die_("allocating chain");

	printf("read chain\n");

	if(!read_chain_(chain, flacfile_, filename_based))
		return die_c_("reading chain", FLAC__metadata_chain_status(chain));

	printf("[S]VP\ttest initial metadata\n");

	if(!compare_chain_(chain, 0, 0))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("switch file to read-write\n");

	if(!change_stats_(flacfile_, /*read-only=*/false))
		return false;

	printf("create iterator\n");
	if(0 == (iterator = FLAC__metadata_iterator_new()))
		return die_("allocating memory for iterator");

	our_current_position = 0;

	FLAC__metadata_iterator_init(iterator, chain);

	if(0 == (block = FLAC__metadata_iterator_get_block(iterator)))
		return die_("getting block from iterator");

	FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_STREAMINFO);

	printf("[S]VP\tmodify STREAMINFO, write\n");

	block->data.stream_info.sample_rate = 32000;
	if(!replace_in_our_metadata_(block, our_current_position, /*copy=*/true))
		return die_("copying object");

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/true, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, false, true)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

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

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

	printf("SV[P]\treplace PADDING with identical-size APPLICATION\n");
	if(0 == (block = FLAC__metadata_iterator_get_block(iterator)))
		return die_("getting block from iterator");
	if(0 == (app = FLAC__metadata_object_new(FLAC__METADATA_TYPE_APPLICATION)))
		return die_("FLAC__metadata_object_new(FLAC__METADATA_TYPE_APPLICATION)");
	memcpy(app->data.application.id, "duh", (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8));
	if(!FLAC__metadata_object_application_set_data(app, data, block->length-(FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8), true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, false, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]\tshrink APPLICATION, don't use padding\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 26, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, false, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]\tgrow APPLICATION, don't use padding\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 28, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, false, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]\tgrow APPLICATION, use padding, but last block is not padding\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 36, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/false, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, false, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]\tshrink APPLICATION, use padding, last block is not padding, but delta is too small for new PADDING block\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 33, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, true, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]\tshrink APPLICATION, use padding, last block is not padding, delta is enough for new PADDING block\n");
	if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)))
		return die_("creating PADDING block");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 29, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	padding->length = 0;
	if(!insert_to_our_metadata_(padding, our_current_position+1, /*copy=*/false))
		return die_("internal error");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, true, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]P\tshrink APPLICATION, use padding, last block is padding\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 16, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	our_metadata_.blocks[our_current_position+1]->length = 13;
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, true, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]P\tgrow APPLICATION, use padding, last block is padding, but delta is too small\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 50, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, true, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]P\tgrow APPLICATION, use padding, last block is padding of exceeding size\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, data, 56, true))
		return die_("setting APPLICATION data");
	if(!replace_in_our_metadata_(app, our_current_position, /*copy=*/true))
		return die_("copying object");
	our_metadata_.blocks[our_current_position+1]->length -= (56 - 50);
	if(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, true, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

	printf("SV[A]P\tgrow APPLICATION, use padding, last block is padding of exact size\n");
	if(0 == (app = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("copying object");
	if(!FLAC__metadata_object_application_set_data(app, 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(!FLAC__metadata_iterator_set_block(iterator, app))
		return die_c_("FLAC__metadata_iterator_set_block(iterator, app)", FLAC__metadata_chain_status(chain));

	if(!write_chain_(chain, /*use_padding=*/true, /*preserve_file_stats=*/false, filename_based, flacfile_))
		return die_c_("during FLAC__metadata_chain_write(chain, true, false)", FLAC__metadata_chain_status(chain));
	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;
	if(!test_file_(flacfile_, decoder_metadata_callback_compare_))
		return false;

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

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

	printf("[S]VA\tinsert PADDING before STREAMINFO (should fail)\n");
	if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)))
		return die_("creating PADDING block");
	padding->length = 30;
	if(!FLAC__metadata_iterator_insert_block_before(iterator, padding))
		printf("\tFLAC__metadata_iterator_insert_block_before() returned false like it should\n");
	else
		return die_("FLAC__metadata_iterator_insert_block_before() should have returned false");

	printf("[S]VP\tnext\n");
	if(!FLAC__metadata_iterator_next(iterator))
		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(!FLAC__metadata_iterator_insert_block_after(iterator, padding))
		return die_("FLAC__metadata_iterator_insert_block_after(iterator, padding)");

	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;

	printf("SV[P]A\tinsert PADDING before\n");
	if(0 == (padding = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("creating PADDING block");
	padding->length = 17;
	if(!insert_to_our_metadata_(padding, our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!FLAC__metadata_iterator_insert_block_before(iterator, padding))
		return die_("FLAC__metadata_iterator_insert_block_before(iterator, padding)");

	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;

	printf("SV[P]PA\tinsert PADDING before\n");
	if(0 == (padding = FLAC__metadata_object_clone(our_metadata_.blocks[our_current_position])))
		return die_("creating PADDING block");
	padding->length = 0;
	if(!insert_to_our_metadata_(padding, our_current_position, /*copy=*/true))
		return die_("copying metadata");
	if(!FLAC__metadata_iterator_insert_block_before(iterator, padding))
		return die_("FLAC__metadata_iterator_insert_block_before(iterator, padding)");

	if(!compare_chain_(chain, our_current_position, FLAC__metadata_iterator_get_block(iterator)))
		return false;

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

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

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

	printf("SVPPP[A]\