X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=db.cpp;h=39fd55776c40c9f094e84bfbbb4aed906b65fed6;hb=ce2e0615420b706e1ff2405fffcedfba37a9adac;hp=c3e647cf46343885360c58007da9d970aabe80af;hpb=c786b9e247c7169e7a8097b37259dfa6ecd5a953;p=nageru

diff --git a/db.cpp b/db.cpp
index c3e647c..39fd557 100644
--- a/db.cpp
+++ b/db.cpp
@@ -1,10 +1,12 @@
 #include "db.h"
 
+#include "frame.pb.h"
+
 #include <string>
 
 using namespace std;
 
-DB::DB(const std::string &filename)
+DB::DB(const string &filename)
 {
 	int ret = sqlite3_open(filename.c_str(), &db);
 	if (ret != SQLITE_OK) {
@@ -16,6 +18,23 @@ DB::DB(const std::string &filename)
 		CREATE TABLE IF NOT EXISTS state (state BLOB);
 	)", nullptr, nullptr, nullptr);  // Ignore errors.
 
+	sqlite3_exec(db, R"(
+		DROP TABLE file;
+	)", nullptr, nullptr, nullptr);  // Ignore errors.
+
+	sqlite3_exec(db, R"(
+		DROP TABLE frame;
+	)", nullptr, nullptr, nullptr);  // Ignore errors.
+
+	sqlite3_exec(db, R"(
+		CREATE TABLE IF NOT EXISTS filev2 (
+			file INTEGER NOT NULL PRIMARY KEY,
+			filename VARCHAR NOT NULL UNIQUE,
+			size BIGINT NOT NULL,
+			frames BLOB NOT NULL
+		);
+	)", nullptr, nullptr, nullptr);  // Ignore errors.
+
 	sqlite3_exec(db, "PRAGMA journal_mode=WAL", nullptr, nullptr, nullptr);  // Ignore errors.
 	sqlite3_exec(db, "PRAGMA synchronous=NORMAL", nullptr, nullptr, nullptr);  // Ignore errors.
 }
@@ -25,7 +44,7 @@ StateProto DB::get_state()
 	StateProto state;
 
 	sqlite3_stmt *stmt;
-	int ret = sqlite3_prepare(db, "SELECT state FROM state", -1, &stmt, 0);
+	int ret = sqlite3_prepare_v2(db, "SELECT state FROM state", -1, &stmt, 0);
 	if (ret != SQLITE_OK) {
 		fprintf(stderr, "SELECT prepare: %s\n", sqlite3_errmsg(db));
 		exit(1);
@@ -70,7 +89,7 @@ void DB::store_state(const StateProto &state)
 	}
 
 	sqlite3_stmt *stmt;
-	ret = sqlite3_prepare(db, "INSERT INTO state VALUES (?)", -1, &stmt, 0);
+	ret = sqlite3_prepare_v2(db, "INSERT INTO state VALUES (?)", -1, &stmt, 0);
 	if (ret != SQLITE_OK) {
 		fprintf(stderr, "INSERT prepare: %s\n", sqlite3_errmsg(db));
 		exit(1);
@@ -96,3 +115,210 @@ void DB::store_state(const StateProto &state)
 		exit(1);
 	}
 }
+
+vector<DB::FrameOnDiskAndStreamIdx> DB::load_frame_file(const string &filename, size_t size, unsigned filename_idx)
+{
+	FileContentsProto file_contents;
+
+	sqlite3_stmt *stmt;
+	int ret = sqlite3_prepare_v2(db, "SELECT frames FROM filev2 WHERE filename=? AND size=?", -1, &stmt, 0);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "SELECT prepare: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
+	sqlite3_bind_int64(stmt, 2, size);
+
+	ret = sqlite3_step(stmt);
+	if (ret == SQLITE_ROW) {
+		bool ok = file_contents.ParseFromArray(sqlite3_column_blob(stmt, 0), sqlite3_column_bytes(stmt, 0));
+		if (!ok) {
+			fprintf(stderr, "Frame list in database is corrupted!\n");
+			exit(1);
+		}
+	} else if (ret != SQLITE_DONE) {
+		fprintf(stderr, "SELECT step: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	ret = sqlite3_finalize(stmt);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "SELECT finalize: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	vector<FrameOnDiskAndStreamIdx> frames;
+	for (const StreamContentsProto &stream : file_contents.stream()) {
+		FrameOnDiskAndStreamIdx frame;
+		frame.stream_idx = stream.stream_idx();
+		for (int i = 0; i < stream.pts_size(); ++i) {
+			frame.frame.filename_idx = filename_idx;
+			frame.frame.pts = stream.pts(i);
+			frame.frame.offset = stream.offset(i);
+			frame.frame.size = stream.file_size(i);
+			frames.push_back(frame);
+		}
+	}
+
+	return frames;
+}
+
+void DB::store_frame_file(const string &filename, size_t size, const vector<FrameOnDiskAndStreamIdx> &frames)
+{
+	int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	// Delete any existing instances with this filename.
+	sqlite3_stmt *stmt;
+
+	ret = sqlite3_prepare_v2(db, "DELETE FROM filev2 WHERE filename=?", -1, &stmt, 0);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "DELETE prepare: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
+
+	ret = sqlite3_step(stmt);
+	if (ret == SQLITE_ROW) {
+		fprintf(stderr, "DELETE step: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	ret = sqlite3_finalize(stmt);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "DELETE finalize: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	// Create the protobuf blob for the new row.
+	FileContentsProto file_contents;
+	unordered_set<unsigned> seen_stream_idx;  // Usually only one.
+	for (const FrameOnDiskAndStreamIdx &frame : frames) {
+		seen_stream_idx.insert(frame.stream_idx);
+	}
+	for (unsigned stream_idx : seen_stream_idx) {
+		StreamContentsProto *stream = file_contents.add_stream();
+		stream->set_stream_idx(stream_idx);
+		stream->mutable_pts()->Reserve(frames.size());
+		stream->mutable_offset()->Reserve(frames.size());
+		stream->mutable_file_size()->Reserve(frames.size());
+		for (const FrameOnDiskAndStreamIdx &frame : frames) {
+			if (frame.stream_idx != stream_idx) {
+				continue;
+			}
+			stream->add_pts(frame.frame.pts);
+			stream->add_offset(frame.frame.offset);
+			stream->add_file_size(frame.frame.size);
+		}
+	}
+	string serialized;
+	file_contents.SerializeToString(&serialized);
+
+	// Insert the new row.
+	ret = sqlite3_prepare_v2(db, "INSERT INTO filev2 (filename, size, frames) VALUES (?, ?, ?)", -1, &stmt, 0);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "INSERT prepare: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
+	sqlite3_bind_int64(stmt, 2, size);
+	sqlite3_bind_blob(stmt, 3, serialized.data(), serialized.size(), SQLITE_STATIC);
+
+	ret = sqlite3_step(stmt);
+	if (ret == SQLITE_ROW) {
+		fprintf(stderr, "INSERT step: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	ret = sqlite3_finalize(stmt);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "INSERT finalize: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	// Commit.
+	ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+}
+
+void DB::clean_unused_frame_files(const vector<string> &used_filenames)
+{
+	int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	ret = sqlite3_exec(db, R"(
+		CREATE TEMPORARY TABLE used_filenames ( filename VARCHAR NOT NULL PRIMARY KEY )
+	)", nullptr, nullptr, nullptr);
+
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "CREATE TEMPORARY TABLE: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	// Insert the new rows.
+	sqlite3_stmt *stmt;
+	ret = sqlite3_prepare_v2(db, "INSERT INTO used_filenames (filename) VALUES (?)", -1, &stmt, 0);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "INSERT prepare: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	for (const string &filename : used_filenames) {
+		sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
+
+		ret = sqlite3_step(stmt);
+		if (ret == SQLITE_ROW) {
+			fprintf(stderr, "INSERT step: %s\n", sqlite3_errmsg(db));
+			exit(1);
+		}
+
+		ret = sqlite3_reset(stmt);
+		if (ret == SQLITE_ROW) {
+			fprintf(stderr, "INSERT reset: %s\n", sqlite3_errmsg(db));
+			exit(1);
+		}
+	}
+
+	ret = sqlite3_finalize(stmt);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "INSERT finalize: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	ret = sqlite3_exec(db, R"(
+		DELETE FROM filev2 WHERE filename NOT IN ( SELECT filename FROM used_filenames )
+	)", nullptr, nullptr, nullptr);
+
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "DELETE: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	ret = sqlite3_exec(db, R"(
+		DROP TABLE used_filenames
+	)", nullptr, nullptr, nullptr);
+
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "DROP TABLE: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+
+	// Commit.
+	ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
+	if (ret != SQLITE_OK) {
+		fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
+		exit(1);
+	}
+}