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Only support dur format v7, set -1 color to black

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Signed-off-by: AnErrupTion <anerruption@disroot.org>
This commit is contained in:
AnErrupTion
2025-12-06 10:05:41 +01:00
parent 92beb24c80
commit a9ff0a6d07
1 changed files with 66 additions and 83 deletions
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149
src/animations/DurFile.zig
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@@ -17,14 +17,14 @@ fn read_decompress_file(allocator: Allocator, file_path: []const u8) ![]u8 {
var file_reader_buffer: [4096]u8 = undefined;
var decompress_buffer: [flate.max_window_len]u8 = undefined;
var file_reader = file_buffer.reader(&file_reader_buffer);
var decompress: flate.Decompress = .init(&file_reader.interface, .gzip, &decompress_buffer);
const file_decompressed = decompress.reader.allocRemaining(allocator, .unlimited) catch {
const file_decompressed = decompress.reader.allocRemaining(allocator, .unlimited) catch {
return error.NotValidFile;
};
return file_decompressed;
}
@@ -36,7 +36,7 @@ const Frame = struct {
// allocator must be outside of struct as it will fail the json parser
pub fn deinit(self: *const Frame, allocator: Allocator) void {
for (self.contents) |con| {
for (self.contents) |con| {
allocator.free(con);
}
allocator.free(self.contents);
@@ -63,22 +63,20 @@ const DurFormat = struct {
frames: std.ArrayList(Frame) = undefined,
pub fn valid(self: *DurFormat) bool {
if (self.formatVersion != null and
if (self.formatVersion != null and
self.colorFormat != null and
self.encoding != null and
self.framerate != null and
self.columns != null and
self.lines != null and
self.frames.items.len >= 1) {
// Oldest example in dur repo was 5 so unsure if older changes json layout
if (self.formatVersion.? < 5) return false;
// v8 may have breaking changes like changing the colormap xy direction
self.frames.items.len >= 1)
{
// v8 may have breaking changes like changing the colormap xy direction
// (https://github.com/cmang/durdraw/issues/24)
if (self.formatVersion.? > 7) return false;
if (self.formatVersion.? != 7) return false;
// Code currently only supports 16 and 256 color format only
if (!(eql(u8, "16", self.colorFormat.?) or eql(u8, "256", self.colorFormat.?)))
if (!(eql(u8, "16", self.colorFormat.?) or eql(u8, "256", self.colorFormat.?)))
return false;
// Code currently supports only utf-8 encoding
@@ -96,18 +94,16 @@ const DurFormat = struct {
}
fn parse_dur_from_json(self: *DurFormat, allocator: Allocator, dur_json_root: Json.Value) !void {
var dur_movie = if (dur_json_root.object.get("DurMovie")) |dm| dm.object else return error.NotValidFile;
var dur_movie = if (dur_json_root.object.get("DurMovie")) |dm| dm.object else return error.NotValidFile;
// Depending on the version, a dur file can have different json object names (ie: columns vs sizeX)
self.formatVersion = if (dur_movie.get("formatVersion"))|x| x.integer else null;
self.colorFormat = if (dur_movie.get("colorFormat")) |x| try allocator.dupe(u8, x.string) else null;
self.encoding = if (dur_movie.get("encoding")) |x| try allocator.dupe(u8, x.string) else null;
self.framerate = if (dur_movie.get("framerate")) |x| x.float else null;
self.columns = if (dur_movie.get("columns")) |x| x.integer
else if (dur_movie.get("sizeX")) |x| x.integer else null;
self.formatVersion = if (dur_movie.get("formatVersion")) |x| x.integer else null;
self.colorFormat = if (dur_movie.get("colorFormat")) |x| try allocator.dupe(u8, x.string) else null;
self.encoding = if (dur_movie.get("encoding")) |x| try allocator.dupe(u8, x.string) else null;
self.framerate = if (dur_movie.get("framerate")) |x| x.float else null;
self.columns = if (dur_movie.get("columns")) |x| x.integer else if (dur_movie.get("sizeX")) |x| x.integer else null;
self.lines = if (dur_movie.get("lines")) |x| x.integer
else if (dur_movie.get("sizeY")) |x| x.integer else null;
self.lines = if (dur_movie.get("lines")) |x| x.integer else if (dur_movie.get("sizeY")) |x| x.integer else null;
const frames = dur_movie.get("frames") orelse return error.NotValidFile;
@@ -117,21 +113,16 @@ const DurFormat = struct {
var parsed_frame = try Json.parseFromValue(Frame, allocator, json_frame, .{});
defer parsed_frame.deinit();
const frame_val = parsed_frame.value;
// copy all fields to own the ptrs for deallocation, the parsed_frame has some other
const frame_val = parsed_frame.value;
// copy all fields to own the ptrs for deallocation, the parsed_frame has some other
// allocated memory making it difficult to deallocate without leaks
const frame: Frame = .{
.frameNumber = frame_val.frameNumber,
.delay = frame_val.delay,
.contents = try allocator.alloc([]u8, frame_val.contents.len),
.colorMap = try allocator.alloc([][]i32, frame_val.colorMap.len)
};
const frame: Frame = .{ .frameNumber = frame_val.frameNumber, .delay = frame_val.delay, .contents = try allocator.alloc([]u8, frame_val.contents.len), .colorMap = try allocator.alloc([][]i32, frame_val.colorMap.len) };
for (0..frame.contents.len) |i| {
frame.contents[i] = try allocator.dupe(u8, frame_val.contents[i]);
}
// colorMap is stored as an 3d array where:
// the outer (i) most array is the horizontal position of the color
// the middle (j) is the vertical position of the color
@@ -143,22 +134,24 @@ const DurFormat = struct {
frame.colorMap[i][j][0] = frame_val.colorMap[i][j][0];
frame.colorMap[i][j][1] = frame_val.colorMap[i][j][1];
}
}
}
try self.frames.append(allocator, frame);
}
}
pub fn create_from_file(self: *DurFormat, allocator: Allocator, file_path: [] const u8) !void {
pub fn create_from_file(self: *DurFormat, allocator: Allocator, file_path: []const u8) !void {
const file_decompressed = try read_decompress_file(allocator, file_path);
defer allocator.free(file_decompressed);
const parsed = try Json.parseFromSlice(Json.Value, allocator, file_decompressed, .{});
defer parsed.deinit();
try parse_dur_from_json(self, allocator, parsed.value);
if (!self.valid()) { return error.NotValidFile; }
if (!self.valid()) {
return error.NotValidFile;
}
}
pub fn init(allocator: Allocator) DurFormat {
@@ -169,8 +162,8 @@ const DurFormat = struct {
if (self.colorFormat) |str| self.allocator.free(str);
if (self.encoding) |str| self.allocator.free(str);
for (self.frames.items) |frame| {
frame.deinit(self.allocator);
for (self.frames.items) |frame| {
frame.deinit(self.allocator);
}
self.frames.deinit(self.allocator);
}
@@ -218,30 +211,30 @@ const rgb_color_16 = [16]u32{
// Made this table from looking at colormapping in dur source, not sure whats going on with the mapping logic
// Array indexes are dur colormappings which value maps to indexes in table above. Only needed for dur 16 color
const durcolor_table_to_color16 = [17]u32{
0, // 0 black
0, // 1 nothing?? dur source did not say why 1 is unused
4, // 2 blue
2, // 3 green
6, // 4 cyan
1, // 5 red
5, // 6 magenta
3, // 7 yellow
7, // 8 light gray
8, // 9 gray
12, // 10 bright blue
0, // 0 black
0, // 1 nothing?? dur source did not say why 1 is unused
4, // 2 blue
2, // 3 green
6, // 4 cyan
1, // 5 red
5, // 6 magenta
3, // 7 yellow
7, // 8 light gray
8, // 9 gray
12, // 10 bright blue
10, // 11 bright green
14, // 12 bright cyan
9, // 13 bright red
9, // 13 bright red
13, // 14 bright magenta
11, // 15 bright yellow
15, // 16 bright white
};
fn sixcube_to_channel(sixcube: u32) u32 {
// Although the range top for the extended range is 0xFF, 6 is not divisible into 0xFF,
// so we use 0xF0 instead with a scaler
// Although the range top for the extended range is 0xFF, 6 is not divisible into 0xFF,
// so we use 0xF0 instead with a scaler
const equal_divisions = 0xF0 / 6;
// Since the range is to 0xFF but 6 isn't divisible, we must add a scaler to get it to 0xFF at the last index (5)
const scaler = 0xFF - (equal_divisions * 5);
@@ -285,7 +278,7 @@ fn convert_256_to_rgb(color_256: u32) u32 {
const equal_divisions = (0xEE - scaler) / 23; // evals to 0x0A
const channel = scaler + equal_divisions * (color_256 - 232);
// gray is equal value of same channel color in rgb
rgb_color = channel | (channel << 8) | (channel << 16);
}
@@ -293,7 +286,6 @@ fn convert_256_to_rgb(color_256: u32) u32 {
return rgb_color;
}
const DurFile = @This();
allocator: Allocator,
@@ -307,20 +299,14 @@ dur_movie: DurFormat,
frame_width: u32,
frame_height: u32,
frame_time: u32,
is_color_format_16 : bool,
is_color_format_16: bool,
pub fn init(allocator: Allocator,
terminal_buffer: *TerminalBuffer,
log_writer: *std.io.Writer,
file_path: []const u8,
x_offset: u32,
y_offset: u32,
full_color: bool) !DurFile {
pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer, log_writer: *std.io.Writer, file_path: []const u8, x_offset: u32, y_offset: u32, full_color: bool) !DurFile {
var dur_movie: DurFormat = .init(allocator);
// error state is recoverable when thrown to main and results in no background with Dummy in main
dur_movie.create_from_file(allocator, file_path) catch |err| switch (err) {
error.FileNotFound => {
error.FileNotFound => {
try log_writer.print("error: dur_file was not found at: {s}\n", .{file_path});
return err;
},
@@ -340,18 +326,18 @@ pub fn init(allocator: Allocator,
const buf_width: u32 = @intCast(terminal_buffer.width);
const buf_height: u32 = @intCast(terminal_buffer.height);
const movie_width: u32 = @intCast(dur_movie.columns.?);
const movie_height: u32 = @intCast(dur_movie.lines.?);
// Clamp to prevent user from exceeding draw window
const x_offset_clamped = std.math.clamp(x_offset, 0, buf_width - 1);
const y_offset_clamped = std.math.clamp(y_offset, 0, buf_height - 1);
// Ensure if user offsets and frame goes offscreen, it will not overflow draw
const frame_width = if ((movie_width + x_offset_clamped) < buf_width) movie_width else buf_width - x_offset_clamped;
const frame_height = if ((movie_height + y_offset_clamped) < buf_height) movie_height else buf_height - y_offset_clamped;
// Convert dur fps to frames per ms
const frame_time: u32 = @intFromFloat(1000 / dur_movie.framerate.?);
@@ -367,7 +353,7 @@ pub fn init(allocator: Allocator,
.frame_width = frame_width,
.frame_height = frame_height,
.frame_time = frame_time,
.is_color_format_16 = eql(u8, dur_movie.colorFormat.?, "16")
.is_color_format_16 = eql(u8, dur_movie.colorFormat.?, "16"),
};
}
@@ -383,37 +369,34 @@ fn realloc(_: *DurFile) anyerror!void {}
fn draw(self: *DurFile) void {
const current_frame = self.dur_movie.frames.items[self.frames];
for (0..self.frame_height) |y| {
var iter = std.unicode.Utf8View.initUnchecked(current_frame.contents[y]).iterator();
for (0..self.frame_width) |x| {
const codepoint: u21 = iter.nextCodepoint().?;
const color_map = current_frame.colorMap[x][y];
var color_map_0: u32 = @intCast(current_frame.colorMap[x][y][0]);
var color_map_1: u32 = @intCast(current_frame.colorMap[x][y][1]);
var color_map_0: u32 = @intCast(if (color_map[0] == -1) 0 else color_map[0]);
var color_map_1: u32 = @intCast(if (color_map[1] == -1) 0 else color_map[1]);
if (self.is_color_format_16) {
color_map_0 = durcolor_table_to_color16[color_map_0];
color_map_0 = durcolor_table_to_color16[color_map_0];
color_map_1 = durcolor_table_to_color16[color_map_1 + 1]; // Add 1, dur source stores it like this for some reason
}
const fg_color = if (self.full_color) convert_256_to_rgb(color_map_0) else tb_color_16[color_map_0];
const bg_color = if (self.full_color) convert_256_to_rgb(color_map_1) else tb_color_16[color_map_1];
const cell = Cell {
.ch = @intCast(codepoint),
.fg = fg_color,
.bg = bg_color
};
const cell = Cell{ .ch = @intCast(codepoint), .fg = fg_color, .bg = bg_color };
cell.put(x + self.x_offset, y + self.y_offset);
}
}
const time_current = std.time.milliTimestamp();
const delta_time = time_current - self.time_previous;
// Convert delay from sec to ms
const delay_time: u32 = @intCast(current_frame.delay * 1000);
if (delta_time > (self.frame_time + delay_time)) {