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use std::sync::atomic::{AtomicU64, Ordering};

use matrix_sdk::{media::MediaEventContent, ruma::events::room::MediaSource};
use matrix_sdk_ui::timeline::{MsgLikeKind, TimelineItem as SdkTimelineItem, TimelineItemContent};
use ruma::{
    OwnedMxcUri,
    events::{
        room::{
            ImageInfo, ThumbnailInfo,
            message::{FileInfo, MessageType, VideoInfo},
        },
        sticker::{StickerEventContent, StickerMediaSource},
    },
};

use super::link_preview::sender_previews;
use crate::{MediaDescriptor, MediaId, MediaKind};

static NEXT_MEDIA_SCOPE: AtomicU64 = AtomicU64::new(1);

/// Per-timeline-session nonce namespacing recycled SDK unique IDs.
///
/// SDK 0.18 recycles [`SdkTimelineItem::unique_id`] across the local-to-remote
/// echo replacement, while transaction IDs disappear. Scoping the recycled ID
/// by a process-wide nonce keeps media IDs stable across replacement without
/// colliding across rooms, threads, or reopened sessions.
#[derive(Clone, Debug)]
pub(crate) struct MediaScope {
    nonce: u64,
}

impl MediaScope {
    pub(crate) fn new() -> Self {
        Self {
            nonce: NEXT_MEDIA_SCOPE.fetch_add(1, Ordering::Relaxed),
        }
    }

    pub(crate) fn owns(&self, id: &MediaId) -> bool {
        id.as_str()
            .split_once('#')
            .is_some_and(|(nonce, _)| nonce.parse() == Ok(self.nonce))
    }
}

#[derive(Clone)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub(crate) struct MediaRegistration {
    pub(crate) id: MediaId,
    pub(crate) kind: MediaKind,
    pub(crate) full: MediaSourceInfo,
    pub(crate) thumbnail: Option<MediaSourceInfo>,
}

#[derive(Clone)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub(crate) struct MediaSourceInfo {
    pub(crate) source: MediaSource,
    pub(crate) mimetype: Option<String>,
    pub(crate) declared_size: Option<u64>,
}

pub(super) fn media_registrations_for_item(
    item: &SdkTimelineItem,
    scope: &MediaScope,
) -> Vec<MediaRegistration> {
    let Some(event) = item.as_event() else {
        return Vec::new();
    };
    let identity = media_identity(item, scope);
    let TimelineItemContent::MsgLike(content) = event.content() else {
        return Vec::new();
    };
    match &content.kind {
        MsgLikeKind::Message(message) => media_registration(&identity, message.msgtype())
            .into_iter()
            .chain(
                sender_previews(Some(&identity), message.msgtype())
                    .into_iter()
                    .filter_map(|(_, registration)| registration),
            )
            .collect(),
        MsgLikeKind::Sticker(sticker) => media_sticker_registration(&identity, sticker.content())
            .into_iter()
            .collect(),
        _ => Vec::new(),
    }
}

pub(super) fn media_identity(item: &SdkTimelineItem, scope: &MediaScope) -> String {
    format!("{}#{}", scope.nonce, item.unique_id().0)
}

pub(super) fn media_from_message(identity: &str, message: &MessageType) -> Option<MediaDescriptor> {
    let descriptor =
        |kind, source: &MediaSource, filename: &str, caption: Option<&str>| MediaDescriptor {
            id: media_id(identity, "media"),
            kind,
            mxc: plain_mxc(source),
            filename: filename.to_owned(),
            caption: caption.map(str::to_owned),
            mimetype: None,
            size_bytes: None,
            width: None,
            height: None,
            duration_ms: None,
            blurhash: None,
            has_thumbnail: false,
        };
    let millis = |duration: std::time::Duration| u64::try_from(duration.as_millis()).ok();
    Some(match message {
        MessageType::Image(content) => {
            let info = content.info.as_deref();
            MediaDescriptor {
                mimetype: info.and_then(|info| info.mimetype.clone()),
                size_bytes: info.and_then(|info| info.size).map(u64::from),
                width: info.and_then(|info| info.width).map(u64::from),
                height: info.and_then(|info| info.height).map(u64::from),
                blurhash: info.and_then(|info| info.blurhash.clone()),
                has_thumbnail: info.is_some_and(|info| info.thumbnail_source.is_some()),
                ..descriptor(
                    MediaKind::Image,
                    &content.source,
                    content.filename(),
                    content.caption(),
                )
            }
        }
        MessageType::Video(content) => {
            let info = content.info.as_deref();
            MediaDescriptor {
                mimetype: info.and_then(|info| info.mimetype.clone()),
                size_bytes: info.and_then(|info| info.size).map(u64::from),
                width: info.and_then(|info| info.width).map(u64::from),
                height: info.and_then(|info| info.height).map(u64::from),
                duration_ms: info.and_then(|info| info.duration).and_then(millis),
                blurhash: info.and_then(|info| info.blurhash.clone()),
                has_thumbnail: info.is_some_and(|info| info.thumbnail_source.is_some()),
                ..descriptor(
                    MediaKind::Video,
                    &content.source,
                    content.filename(),
                    content.caption(),
                )
            }
        }
        MessageType::Audio(content) => {
            let info = content.info.as_deref();
            MediaDescriptor {
                mimetype: info.and_then(|info| info.mimetype.clone()),
                size_bytes: info.and_then(|info| info.size).map(u64::from),
                duration_ms: info.and_then(|info| info.duration).and_then(millis),
                ..descriptor(
                    MediaKind::Audio,
                    &content.source,
                    content.filename(),
                    content.caption(),
                )
            }
        }
        MessageType::File(content) => {
            let info = content.info.as_deref();
            MediaDescriptor {
                mimetype: info.and_then(|info| info.mimetype.clone()),
                size_bytes: info.and_then(|info| info.size).map(u64::from),
                has_thumbnail: info.is_some_and(|info| info.thumbnail_source.is_some()),
                ..descriptor(
                    MediaKind::File,
                    &content.source,
                    content.filename(),
                    content.caption(),
                )
            }
        }
        _ => return None,
    })
}

pub(super) fn media_descriptor_for_sticker(
    identity: &str,
    content: &StickerEventContent,
) -> MediaDescriptor {
    MediaDescriptor {
        id: media_id(identity, "sticker"),
        kind: MediaKind::Sticker,
        mxc: match &content.source {
            StickerMediaSource::Plain(uri) => Some(uri.clone()),
            _ => None,
        },
        filename: content.body.clone(),
        caption: None,
        mimetype: content.info.mimetype.clone(),
        size_bytes: content.info.size.map(u64::from),
        width: content.info.width.map(u64::from),
        height: content.info.height.map(u64::from),
        duration_ms: None,
        blurhash: content.info.blurhash.clone(),
        has_thumbnail: content.info.thumbnail_source.is_some(),
    }
}

fn plain_mxc(source: &MediaSource) -> Option<OwnedMxcUri> {
    match source {
        MediaSource::Plain(uri) => Some(uri.clone()),
        MediaSource::Encrypted(_) => None,
    }
}

pub(super) fn media_id(identity: &str, suffix: &str) -> MediaId {
    MediaId::new(format!("{identity}#{suffix}"))
}

pub(super) fn media_sticker_registration(
    identity: &str,
    content: &StickerEventContent,
) -> Option<MediaRegistration> {
    Some(MediaRegistration {
        id: media_id(identity, "sticker"),
        kind: MediaKind::Sticker,
        full: MediaSourceInfo {
            source: content.source()?,
            mimetype: content.info.mimetype.clone(),
            declared_size: content.info.size.map(u64::from),
        },
        thumbnail: thumbnail_media_source(
            content.info.thumbnail_source.clone(),
            content.info.thumbnail_info.as_deref(),
        ),
    })
}

pub(super) fn media_registration(
    identity: &str,
    message: &MessageType,
) -> Option<MediaRegistration> {
    match message {
        MessageType::Image(content) => media_registration_with_info(
            identity,
            MediaKind::Image,
            content.source(),
            content.info.as_deref(),
        ),
        MessageType::Video(content) => media_registration_with_info(
            identity,
            MediaKind::Video,
            content.source(),
            content.info.as_deref(),
        ),
        MessageType::File(content) => media_registration_with_info(
            identity,
            MediaKind::File,
            content.source(),
            content.info.as_deref(),
        ),
        MessageType::Audio(content) => media_registration_with_parts(
            identity,
            MediaKind::Audio,
            content.source(),
            content.info.as_ref().and_then(|info| info.mimetype.clone()),
            content
                .info
                .as_ref()
                .and_then(|info| info.size)
                .map(u64::from),
            None,
        ),
        _ => None,
    }
}

fn media_registration_with_info<T: MediaInfo>(
    identity: &str,
    kind: MediaKind,
    source: Option<MediaSource>,
    info: Option<&T>,
) -> Option<MediaRegistration> {
    media_registration_with_parts(
        identity,
        kind,
        source,
        info.and_then(MediaInfo::mimetype),
        info.and_then(MediaInfo::declared_size),
        info.and_then(MediaInfo::thumbnail),
    )
}

fn media_registration_with_parts(
    identity: &str,
    kind: MediaKind,
    source: Option<MediaSource>,
    mimetype: Option<String>,
    declared_size: Option<u64>,
    thumbnail: Option<MediaSourceInfo>,
) -> Option<MediaRegistration> {
    Some(MediaRegistration {
        id: media_id(identity, "media"),
        kind,
        full: MediaSourceInfo {
            source: source?,
            mimetype,
            declared_size,
        },
        thumbnail,
    })
}

trait MediaInfo {
    fn mimetype(&self) -> Option<String>;
    fn declared_size(&self) -> Option<u64>;
    fn thumbnail(&self) -> Option<MediaSourceInfo>;
}

macro_rules! impl_media_info {
    ($type:ty) => {
        impl MediaInfo for $type {
            fn mimetype(&self) -> Option<String> {
                self.mimetype.clone()
            }

            fn declared_size(&self) -> Option<u64> {
                self.size.map(u64::from)
            }

            fn thumbnail(&self) -> Option<MediaSourceInfo> {
                thumbnail_media_source(
                    self.thumbnail_source.clone(),
                    self.thumbnail_info.as_deref(),
                )
            }
        }
    };
}

impl_media_info!(ImageInfo);
impl_media_info!(VideoInfo);
impl_media_info!(FileInfo);

fn thumbnail_media_source(
    source: Option<MediaSource>,
    info: Option<&ThumbnailInfo>,
) -> Option<MediaSourceInfo> {
    source.map(|source| MediaSourceInfo {
        source,
        mimetype: info.and_then(|info| info.mimetype.clone()),
        declared_size: info.and_then(|info| info.size).map(u64::from),
    })
}

#[cfg(test)]
mod tests {
    use matrix_sdk::ruma::{
        events::room::{ImageInfo, message::ImageMessageEventContent},
        mxc_uri,
    };

    use super::*;

    #[test]
    fn image_messages_keep_media_metadata() {
        let mut info = ImageInfo::new();
        info.mimetype = Some("image/png".to_owned());
        info.size = Some(65_536_u32.into());
        info.width = Some(640_u32.into());
        info.height = Some(480_u32.into());
        let content = ImageMessageEventContent::plain(
            "screen.png".to_owned(),
            mxc_uri!("mxc://example.org/screen").to_owned(),
        )
        .info(Box::new(info));

        let media = media_from_message("$event:example.org", &MessageType::Image(content)).unwrap();
        assert_eq!(media.id.as_str(), "$event:example.org#media");
        assert_eq!(media.kind, MediaKind::Image);
        assert_eq!(media.filename, "screen.png");
        assert_eq!(media.caption, None);
        assert_eq!(media.mimetype.as_deref(), Some("image/png"));
        assert_eq!(media.size_bytes, Some(65_536));
        assert_eq!((media.width, media.height), (Some(640), Some(480)));
    }
}

1	use std::sync::atomic::{AtomicU64, Ordering};
2
3	use matrix_sdk::{media::MediaEventContent, ruma::events::room::MediaSource};
4	use matrix_sdk_ui::timeline::{MsgLikeKind, TimelineItem as SdkTimelineItem, TimelineItemContent};
5	use ruma::{
6	OwnedMxcUri,
7	events::{
8	room::{
9	ImageInfo, ThumbnailInfo,
10	message::{FileInfo, MessageType, VideoInfo},
11	},
12	sticker::{StickerEventContent, StickerMediaSource},
13	},
14	};
15
16	use super::link_preview::sender_previews;
17	use crate::{MediaDescriptor, MediaId, MediaKind};
18
19	static NEXT_MEDIA_SCOPE: AtomicU64 = AtomicU64::new(1);
20
21	/// Per-timeline-session nonce namespacing recycled SDK unique IDs.
22	///
23	/// SDK 0.18 recycles [`SdkTimelineItem::unique_id`] across the local-to-remote
24	/// echo replacement, while transaction IDs disappear. Scoping the recycled ID
25	/// by a process-wide nonce keeps media IDs stable across replacement without
26	/// colliding across rooms, threads, or reopened sessions.
27	#[derive(Clone, Debug)]
28	pub(crate) struct MediaScope {
29	nonce: u64,
30	}
31
32	impl MediaScope {
33	pub(crate) fn new() -> Self {
34	Self {
35	nonce: NEXT_MEDIA_SCOPE.fetch_add(1, Ordering::Relaxed),
36	}
37	}
38
39	pub(crate) fn owns(&self, id: &MediaId) -> bool {
40	id.as_str()
41	.split_once('#')
42	.is_some_and(\|(nonce, _)\| nonce.parse() == Ok(self.nonce))
43	}
44	}
45
46	#[derive(Clone)]
47	#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
48	pub(crate) struct MediaRegistration {
49	pub(crate) id: MediaId,
50	pub(crate) kind: MediaKind,
51	pub(crate) full: MediaSourceInfo,
52	pub(crate) thumbnail: Option<MediaSourceInfo>,
53	}
54
55	#[derive(Clone)]
56	#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
57	pub(crate) struct MediaSourceInfo {
58	pub(crate) source: MediaSource,
59	pub(crate) mimetype: Option<String>,
60	pub(crate) declared_size: Option<u64>,
61	}
62
63	pub(super) fn media_registrations_for_item(
64	item: &SdkTimelineItem,
65	scope: &MediaScope,
66	) -> Vec<MediaRegistration> {
67	let Some(event) = item.as_event() else {
68	return Vec::new();
69	};
70	let identity = media_identity(item, scope);
71	let TimelineItemContent::MsgLike(content) = event.content() else {
72	return Vec::new();
73	};
74	match &content.kind {
75	MsgLikeKind::Message(message) => media_registration(&identity, message.msgtype())
76	.into_iter()
77	.chain(
78	sender_previews(Some(&identity), message.msgtype())
79	.into_iter()
80	.filter_map(\|(_, registration)\| registration),
81	)
82	.collect(),
83	MsgLikeKind::Sticker(sticker) => media_sticker_registration(&identity, sticker.content())
84	.into_iter()
85	.collect(),
86	_ => Vec::new(),
87	}
88	}
89
90	pub(super) fn media_identity(item: &SdkTimelineItem, scope: &MediaScope) -> String {
91	format!("{}#{}", scope.nonce, item.unique_id().0)
92	}
93
94	pub(super) fn media_from_message(identity: &str, message: &MessageType) -> Option<MediaDescriptor> {
95	let descriptor =
96	\|kind, source: &MediaSource, filename: &str, caption: Option<&str>\| MediaDescriptor {
97	id: media_id(identity, "media"),
98	kind,
99	mxc: plain_mxc(source),
100	filename: filename.to_owned(),
101	caption: caption.map(str::to_owned),
102	mimetype: None,
103	size_bytes: None,
104	width: None,
105	height: None,
106	duration_ms: None,
107	blurhash: None,
108	has_thumbnail: false,
109	};
110	let millis = \|duration: std::time::Duration\| u64::try_from(duration.as_millis()).ok();
111	Some(match message {
112	MessageType::Image(content) => {
113	let info = content.info.as_deref();
114	MediaDescriptor {
115	mimetype: info.and_then(\|info\| info.mimetype.clone()),
116	size_bytes: info.and_then(\|info\| info.size).map(u64::from),
117	width: info.and_then(\|info\| info.width).map(u64::from),
118	height: info.and_then(\|info\| info.height).map(u64::from),
119	blurhash: info.and_then(\|info\| info.blurhash.clone()),
120	has_thumbnail: info.is_some_and(\|info\| info.thumbnail_source.is_some()),
121	..descriptor(
122	MediaKind::Image,
123	&content.source,
124	content.filename(),
125	content.caption(),
126	)
127	}
128	}
129	MessageType::Video(content) => {
130	let info = content.info.as_deref();
131	MediaDescriptor {
132	mimetype: info.and_then(\|info\| info.mimetype.clone()),
133	size_bytes: info.and_then(\|info\| info.size).map(u64::from),
134	width: info.and_then(\|info\| info.width).map(u64::from),
135	height: info.and_then(\|info\| info.height).map(u64::from),
136	duration_ms: info.and_then(\|info\| info.duration).and_then(millis),
137	blurhash: info.and_then(\|info\| info.blurhash.clone()),
138	has_thumbnail: info.is_some_and(\|info\| info.thumbnail_source.is_some()),
139	..descriptor(
140	MediaKind::Video,
141	&content.source,
142	content.filename(),
143	content.caption(),
144	)
145	}
146	}
147	MessageType::Audio(content) => {
148	let info = content.info.as_deref();
149	MediaDescriptor {
150	mimetype: info.and_then(\|info\| info.mimetype.clone()),
151	size_bytes: info.and_then(\|info\| info.size).map(u64::from),
152	duration_ms: info.and_then(\|info\| info.duration).and_then(millis),
153	..descriptor(
154	MediaKind::Audio,
155	&content.source,
156	content.filename(),
157	content.caption(),
158	)
159	}
160	}
161	MessageType::File(content) => {
162	let info = content.info.as_deref();
163	MediaDescriptor {
164	mimetype: info.and_then(\|info\| info.mimetype.clone()),
165	size_bytes: info.and_then(\|info\| info.size).map(u64::from),
166	has_thumbnail: info.is_some_and(\|info\| info.thumbnail_source.is_some()),
167	..descriptor(
168	MediaKind::File,
169	&content.source,
170	content.filename(),
171	content.caption(),
172	)
173	}
174	}
175	_ => return None,
176	})
177	}
178
179	pub(super) fn media_descriptor_for_sticker(
180	identity: &str,
181	content: &StickerEventContent,
182	) -> MediaDescriptor {
183	MediaDescriptor {
184	id: media_id(identity, "sticker"),
185	kind: MediaKind::Sticker,
186	mxc: match &content.source {
187	StickerMediaSource::Plain(uri) => Some(uri.clone()),
188	_ => None,
189	},
190	filename: content.body.clone(),
191	caption: None,
192	mimetype: content.info.mimetype.clone(),
193	size_bytes: content.info.size.map(u64::from),
194	width: content.info.width.map(u64::from),
195	height: content.info.height.map(u64::from),
196	duration_ms: None,
197	blurhash: content.info.blurhash.clone(),
198	has_thumbnail: content.info.thumbnail_source.is_some(),
199	}
200	}
201
202	fn plain_mxc(source: &MediaSource) -> Option<OwnedMxcUri> {
203	match source {
204	MediaSource::Plain(uri) => Some(uri.clone()),
205	MediaSource::Encrypted(_) => None,
206	}
207	}
208
209	pub(super) fn media_id(identity: &str, suffix: &str) -> MediaId {
210	MediaId::new(format!("{identity}#{suffix}"))
211	}
212
213	pub(super) fn media_sticker_registration(
214	identity: &str,
215	content: &StickerEventContent,
216	) -> Option<MediaRegistration> {
217	Some(MediaRegistration {
218	id: media_id(identity, "sticker"),
219	kind: MediaKind::Sticker,
220	full: MediaSourceInfo {
221	source: content.source()?,
222	mimetype: content.info.mimetype.clone(),
223	declared_size: content.info.size.map(u64::from),
224	},
225	thumbnail: thumbnail_media_source(
226	content.info.thumbnail_source.clone(),
227	content.info.thumbnail_info.as_deref(),
228	),
229	})
230	}
231
232	pub(super) fn media_registration(
233	identity: &str,
234	message: &MessageType,
235	) -> Option<MediaRegistration> {
236	match message {
237	MessageType::Image(content) => media_registration_with_info(
238	identity,
239	MediaKind::Image,
240	content.source(),
241	content.info.as_deref(),
242	),
243	MessageType::Video(content) => media_registration_with_info(
244	identity,
245	MediaKind::Video,
246	content.source(),
247	content.info.as_deref(),
248	),
249	MessageType::File(content) => media_registration_with_info(
250	identity,
251	MediaKind::File,
252	content.source(),
253	content.info.as_deref(),
254	),
255	MessageType::Audio(content) => media_registration_with_parts(
256	identity,
257	MediaKind::Audio,
258	content.source(),
259	content.info.as_ref().and_then(\|info\| info.mimetype.clone()),
260	content
261	.info
262	.as_ref()
263	.and_then(\|info\| info.size)
264	.map(u64::from),
265	None,
266	),
267	_ => None,
268	}
269	}
270
271	fn media_registration_with_info<T: MediaInfo>(
272	identity: &str,
273	kind: MediaKind,
274	source: Option<MediaSource>,
275	info: Option<&T>,
276	) -> Option<MediaRegistration> {
277	media_registration_with_parts(
278	identity,
279	kind,
280	source,
281	info.and_then(MediaInfo::mimetype),
282	info.and_then(MediaInfo::declared_size),
283	info.and_then(MediaInfo::thumbnail),
284	)
285	}
286
287	fn media_registration_with_parts(
288	identity: &str,
289	kind: MediaKind,
290	source: Option<MediaSource>,
291	mimetype: Option<String>,
292	declared_size: Option<u64>,
293	thumbnail: Option<MediaSourceInfo>,
294	) -> Option<MediaRegistration> {
295	Some(MediaRegistration {
296	id: media_id(identity, "media"),
297	kind,
298	full: MediaSourceInfo {
299	source: source?,
300	mimetype,
301	declared_size,
302	},
303	thumbnail,
304	})
305	}
306
307	trait MediaInfo {
308	fn mimetype(&self) -> Option<String>;
309	fn declared_size(&self) -> Option<u64>;
310	fn thumbnail(&self) -> Option<MediaSourceInfo>;
311	}
312
313	macro_rules! impl_media_info {
314	($type:ty) => {
315	impl MediaInfo for $type {
316	fn mimetype(&self) -> Option<String> {
317	self.mimetype.clone()
318	}
319
320	fn declared_size(&self) -> Option<u64> {
321	self.size.map(u64::from)
322	}
323
324	fn thumbnail(&self) -> Option<MediaSourceInfo> {
325	thumbnail_media_source(
326	self.thumbnail_source.clone(),
327	self.thumbnail_info.as_deref(),
328	)
329	}
330	}
331	};
332	}
333
334	impl_media_info!(ImageInfo);
335	impl_media_info!(VideoInfo);
336	impl_media_info!(FileInfo);
337
338	fn thumbnail_media_source(
339	source: Option<MediaSource>,
340	info: Option<&ThumbnailInfo>,
341	) -> Option<MediaSourceInfo> {
342	source.map(\|source\| MediaSourceInfo {
343	source,
344	mimetype: info.and_then(\|info\| info.mimetype.clone()),
345	declared_size: info.and_then(\|info\| info.size).map(u64::from),
346	})
347	}
348
349	#[cfg(test)]
350	mod tests {
351	use matrix_sdk::ruma::{
352	events::room::{ImageInfo, message::ImageMessageEventContent},
353	mxc_uri,
354	};
355
356	use super::*;
357
358	#[test]
359	fn image_messages_keep_media_metadata() {
360	let mut info = ImageInfo::new();
361	info.mimetype = Some("image/png".to_owned());
362	info.size = Some(65_536_u32.into());
363	info.width = Some(640_u32.into());
364	info.height = Some(480_u32.into());
365	let content = ImageMessageEventContent::plain(
366	"screen.png".to_owned(),
367	mxc_uri!("mxc://example.org/screen").to_owned(),
368	)
369	.info(Box::new(info));
370
371	let media = media_from_message("$event:example.org", &MessageType::Image(content)).unwrap();
372	assert_eq!(media.id.as_str(), "$event:example.org#media");
373	assert_eq!(media.kind, MediaKind::Image);
374	assert_eq!(media.filename, "screen.png");
375	assert_eq!(media.caption, None);
376	assert_eq!(media.mimetype.as_deref(), Some("image/png"));
377	assert_eq!(media.size_bytes, Some(65_536));
378	assert_eq!((media.width, media.height), (Some(640), Some(480)));
379	}
380	}