Files
jellytau/docs/traceability.md
T
dtourolle 1285908733 fix(android): paint the letterbox bars, so stale pixels stop surviving in them
Native video left debris in the padding around the video: the "previous frame"
flash on rotation, a ghost copy of the control bar stranded in the top bar, each
new clock digit drawn over the one before it (35:42 with the 1 still showing
through the 2), and the sleep/quality menus leaving their imprint after closing.
One cause under all of it — nothing painted those bars.

The window surface is opaque; the theme is not translucent and dumpsys window
shows no translucency flag. For an opaque surface HWUI deliberately does NOT
clear the damaged region before replaying a frame: it assumes the view hierarchy
covers every pixel it owns. Here that hierarchy is window background → video
TextureView → transparent WebView, and fitSurfaceToScreen sizes the TextureView
to the letterboxed video rect. So the bars were the window background's alone to
paint, and setTransparent(true) cleared it to TRANSPARENT — leaving them painted
by nobody, with whatever was last in the framebuffer surviving there.

The window background now stays opaque black while compositing. It cannot hide
the video: the TextureView is drawn on top of it, and the WebView's own
background is what lets the picture through.

Three previous attempts missed because they aimed at the window's rotation
animation and at TextureView frame-retention — two postOnAnimation hops, an
onSurfaceTextureUpdated reveal, then ROTATION_ANIMATION_JUMPCUT with
FLAG_FULLSCREEN to make it stick. The pixels were never the animation's, which is
also why the artefact reproduces standing still, with no rotation involved. Those
are removed. The alpha-hiding among them actively made things worse: it blanked
the one view that reliably paints its own rect. FLAG_FULLSCREEN goes too — it
fought edge-to-edge insets for no gain.

Verified on device (HONOR ROD2-W09, Android 16): reproduced with native video on
— ghost control bar in the top bar, doubled clock digit — then absent after the
fix across playback, the control bar and a rotation round-trip.

DR-194 is rewritten to record the real mechanism and marked Done.
2026-08-16 21:51:14 +02:00

376 KiB

Code Traceability Matrix

Generated: 8/16/2026, 9:50:22 PM

Summary

  • Total Files Scanned: 366
  • Total TRACES Found: 816
  • Requirements Covered:
    • User Requirements (UR): 71
    • Integration Requirements (IR): 19
    • Development Requirements (DR): 165
    • Jellyfin API Requirements (JA): 28

Requirements by Type

User Requirements (UR)

UR-002, UR-003, UR-004, UR-005, UR-007, UR-008, UR-009, UR-010, UR-011, UR-012, UR-013, UR-014, UR-015, UR-016, UR-017, UR-018, UR-019, UR-020, UR-021, UR-022, UR-023, UR-024, UR-025, UR-026, UR-027, UR-028, UR-029, UR-030, UR-031, UR-032, UR-033, UR-034, UR-035, UR-036, UR-038, UR-039, UR-040, UR-041, UR-042, UR-043, UR-044, UR-045, UR-046, UR-047, UR-048, UR-049, UR-050, UR-051, UR-052, UR-053, UR-054, UR-055, UR-056, UR-057, UR-058, UR-059, UR-060, UR-061, UR-062, UR-063, UR-064, UR-065, UR-066, UR-067, UR-068, UR-069, UR-071, UR-072, UR-073, UR-074, UR-075

Integration Requirements (IR)

IR-003, IR-004, IR-009, IR-010, IR-011, IR-012, IR-013, IR-014, IR-015, IR-016, IR-020, IR-021, IR-023, IR-025, IR-026, IR-027, IR-028, IR-030, IR-031

Development Requirements (DR)

DR-001, DR-002, DR-003, DR-004, DR-005, DR-006, DR-007, DR-009, DR-010, DR-011, DR-012, DR-013, DR-014, DR-015, DR-016, DR-017, DR-018, DR-020, DR-021, DR-022, DR-023, DR-024, DR-025, DR-026, DR-027, DR-028, DR-029, DR-030, DR-032, DR-033, DR-034, DR-035, DR-036, DR-037, DR-038, DR-039, DR-040, DR-041, DR-043, DR-044, DR-045, DR-047, DR-048, DR-049, DR-050, DR-051, DR-052, DR-053, DR-054, DR-055, DR-056, DR-057, DR-058, DR-059, DR-060, DR-061, DR-062, DR-063, DR-064, DR-065, DR-066, DR-067, DR-068, DR-069, DR-070, DR-074, DR-075, DR-076, DR-077, DR-078, DR-079, DR-080, DR-081, DR-082, DR-083, DR-084, DR-085, DR-086, DR-087, DR-088, DR-089, DR-090, DR-091, DR-092, DR-093, DR-095, DR-096, DR-097, DR-098, DR-099, DR-100, DR-101, DR-102, DR-103, DR-104, DR-105, DR-106, DR-107, DR-108, DR-109, DR-110, DR-111, DR-112, DR-113, DR-114, DR-115, DR-116, DR-117, DR-118, DR-119, DR-120, DR-123, DR-126, DR-127, DR-128, DR-129, DR-130, DR-131, DR-132, DR-133, DR-134, DR-135, DR-136, DR-137, DR-140, DR-141, DR-142, DR-143, DR-147, DR-148, DR-149, DR-150, DR-151, DR-152, DR-153, DR-154, DR-155, DR-156, DR-157, DR-158, DR-159, DR-160, DR-162, DR-167, DR-168, DR-169, DR-170, DR-171, DR-173, DR-174, DR-175, DR-176, DR-177, DR-178, DR-179, DR-180, DR-181, DR-182, DR-183, DR-185, DR-186, DR-188, DR-189, DR-193, DR-195

Jellyfin API Requirements (JA)

JA-001, JA-002, JA-003, JA-004, JA-005, JA-007, JA-008, JA-010, JA-011, JA-012, JA-016, JA-017, JA-019, JA-020, JA-021, JA-022, JA-023, JA-024, JA-025, JA-026, JA-028, JA-029, JA-030, JA-031, JA-032, JA-033, JA-034, JA-035

Detailed Mapping

IR-003

Locations: 2 file(s)

IR-004

Locations: 1 file(s)

IR-009

Locations: 6 file(s)

IR-010

Locations: 2 file(s)

IR-011

Locations: 1 file(s)

IR-012

Locations: 2 file(s)

IR-013

Locations: 3 file(s)

IR-014

Locations: 6 file(s)

IR-015

Locations: 1 file(s)

IR-016

Locations: 16 file(s)

IR-020

Locations: 8 file(s)

IR-021

Locations: 1 file(s)

IR-023

Locations: 1 file(s)

IR-025

Locations: 2 file(s)

IR-026

Locations: 1 file(s)

IR-027

Locations: 1 file(s)

IR-028

Locations: 1 file(s)

IR-030

Locations: 2 file(s)

IR-031

Locations: 2 file(s)

DR-001

Locations: 17 file(s)

DR-002

Locations: 2 file(s)

DR-003

Locations: 2 file(s)

DR-004

Locations: 16 file(s)

DR-005

Locations: 13 file(s)

DR-006

Locations: 2 file(s)

DR-007

Locations: 9 file(s)

DR-009

Locations: 12 file(s)

DR-010

Locations: 1 file(s)

DR-011

Locations: 9 file(s)

DR-012

Locations: 7 file(s)

DR-013

Locations: 5 file(s)

DR-014

Locations: 4 file(s)

DR-015

Locations: 6 file(s)

DR-016

Locations: 3 file(s)

DR-017

Locations: 3 file(s)

DR-018

Locations: 1 file(s)

DR-020

Locations: 8 file(s)

DR-021

Locations: 3 file(s)

DR-022

Locations: 1 file(s)

DR-023

Locations: 12 file(s)

DR-024

Locations: 8 file(s)

DR-025

Locations: 1 file(s)

DR-026

Locations: 2 file(s)

DR-027

Locations: 2 file(s)

DR-028

Locations: 20 file(s)

DR-029

Locations: 10 file(s)

DR-030

Locations: 18 file(s)

DR-032

Locations: 1 file(s)

DR-033

Locations: 2 file(s)

DR-034

Locations: 2 file(s)

DR-035

Locations: 7 file(s)

DR-036

Locations: 12 file(s)

DR-037

Locations: 12 file(s)

DR-038

Locations: 9 file(s)

DR-039

Locations: 8 file(s)

DR-040

Locations: 3 file(s)

DR-041

Locations: 2 file(s)

DR-043

Locations: 1 file(s)

DR-044

Locations: 1 file(s)

DR-045

Locations: 1 file(s)

DR-047

Locations: 15 file(s)

DR-048

Locations: 6 file(s)

DR-049

Locations: 1 file(s)

DR-050

Locations: 1 file(s)

DR-051

Locations: 3 file(s)

DR-052

Locations: 20 file(s)

DR-053

Locations: 1 file(s)

DR-054

Locations: 2 file(s)

DR-055

Locations: 2 file(s)

DR-056

Locations: 1 file(s)

DR-057

Locations: 1 file(s)

DR-058

Locations: 1 file(s)

DR-059

Locations: 2 file(s)

DR-060

Locations: 1 file(s)

DR-061

Locations: 2 file(s)

DR-062

Locations: 6 file(s)

DR-063

Locations: 17 file(s)

DR-064

Locations: 5 file(s)

DR-065

Locations: 2 file(s)

DR-066

Locations: 5 file(s)

DR-067

Locations: 3 file(s)

DR-068

Locations: 1 file(s)

DR-069

Locations: 1 file(s)

DR-070

Locations: 1 file(s)

DR-074

Locations: 17 file(s)

DR-075

Locations: 1 file(s)

DR-076

Locations: 2 file(s)

DR-077

Locations: 2 file(s)

DR-078

Locations: 7 file(s)

DR-079

Locations: 2 file(s)

DR-080

Locations: 2 file(s)

DR-081

Locations: 2 file(s)

DR-082

Locations: 21 file(s)

DR-083

Locations: 19 file(s)

DR-084

Locations: 2 file(s)

DR-085

Locations: 15 file(s)

DR-086

Locations: 1 file(s)

DR-087

Locations: 3 file(s)

DR-088

Locations: 2 file(s)

DR-089

Locations: 4 file(s)

DR-090

Locations: 1 file(s)

DR-091

Locations: 2 file(s)

DR-092

Locations: 2 file(s)

DR-093

Locations: 4 file(s)

DR-095

Locations: 1 file(s)

DR-096

Locations: 1 file(s)

DR-097

Locations: 9 file(s)

DR-098

Locations: 4 file(s)

DR-099

Locations: 2 file(s)

DR-100

Locations: 2 file(s)

DR-101

Locations: 8 file(s)

DR-102

Locations: 7 file(s)

DR-103

Locations: 6 file(s)

DR-104

Locations: 1 file(s)

DR-105

Locations: 10 file(s)

DR-106

Locations: 7 file(s)

DR-107

Locations: 2 file(s)

DR-108

Locations: 5 file(s)

DR-109

Locations: 6 file(s)

DR-110

Locations: 8 file(s)

DR-111

Locations: 5 file(s)

DR-112

Locations: 6 file(s)

DR-113

Locations: 4 file(s)

DR-114

Locations: 2 file(s)

DR-115

Locations: 16 file(s)

DR-116

Locations: 11 file(s)

DR-117

Locations: 8 file(s)

DR-118

Locations: 5 file(s)

DR-119

Locations: 15 file(s)

DR-120

Locations: 19 file(s)

DR-123

Locations: 8 file(s)

DR-126

Locations: 2 file(s)

DR-127

Locations: 6 file(s)

DR-128

Locations: 3 file(s)

DR-129

Locations: 8 file(s)

DR-130

Locations: 7 file(s)

DR-131

Locations: 16 file(s)

DR-132

Locations: 12 file(s)

DR-133

Locations: 2 file(s)

DR-134

Locations: 1 file(s)

DR-135

Locations: 5 file(s)

DR-136

Locations: 3 file(s)

DR-137

Locations: 17 file(s)

DR-140

Locations: 3 file(s)

DR-141

Locations: 2 file(s)

DR-142

Locations: 11 file(s)

DR-143

Locations: 11 file(s)

DR-147

Locations: 5 file(s)

DR-148

Locations: 1 file(s)

DR-149

Locations: 3 file(s)

DR-150

Locations: 4 file(s)

DR-151

Locations: 1 file(s)

DR-152

Locations: 2 file(s)

DR-153

Locations: 1 file(s)

DR-154

Locations: 7 file(s)

DR-155

Locations: 5 file(s)

DR-156

Locations: 2 file(s)

DR-157

Locations: 1 file(s)

DR-158

Locations: 6 file(s)

DR-159

Locations: 3 file(s)

DR-160

Locations: 1 file(s)

DR-162

Locations: 39 file(s)

DR-167

Locations: 2 file(s)

DR-168

Locations: 6 file(s)

DR-169

Locations: 2 file(s)

DR-170

Locations: 2 file(s)

DR-171

Locations: 9 file(s)

DR-173

Locations: 17 file(s)

DR-174

Locations: 8 file(s)

DR-175

Locations: 9 file(s)

DR-176

Locations: 24 file(s)

DR-177

Locations: 9 file(s)

DR-178

Locations: 13 file(s)

DR-179

Locations: 15 file(s)

DR-180

Locations: 6 file(s)

DR-181

Locations: 11 file(s)

DR-182

Locations: 4 file(s)

DR-183

Locations: 1 file(s)

DR-185

Locations: 1 file(s)

DR-186

Locations: 1 file(s)

DR-188

Locations: 1 file(s)

DR-189

Locations: 4 file(s)

DR-193

Locations: 2 file(s)

DR-195

Locations: 1 file(s)

JA-001

Locations: 1 file(s)

JA-002

Locations: 2 file(s)

JA-003

Locations: 1 file(s)

JA-004

Locations: 3 file(s)

JA-005

Locations: 1 file(s)

JA-007

Locations: 1 file(s)

JA-008

Locations: 8 file(s)

JA-010

Locations: 2 file(s)

JA-011

Locations: 2 file(s)

JA-012

Locations: 2 file(s)

JA-016

Locations: 1 file(s)

JA-017

Locations: 1 file(s)

JA-019

Locations: 1 file(s)

JA-020

Locations: 1 file(s)

JA-021

Locations: 6 file(s)

JA-022

Locations: 3 file(s)

JA-023

Locations: 3 file(s)

JA-024

Locations: 2 file(s)

JA-025

Locations: 4 file(s)

JA-026

Locations: 3 file(s)

JA-028

Locations: 1 file(s)

JA-029

Locations: 3 file(s)

JA-030

Locations: 2 file(s)

JA-031

Locations: 2 file(s)

JA-032

Locations: 10 file(s)

JA-033

Locations: 7 file(s)

JA-034

Locations: 3 file(s)

JA-035

Locations: 2 file(s)

UR-003

Locations: 42 file(s)

UR-004

Locations: 62 file(s)

UR-005

Locations: 103 file(s)

UR-007

Locations: 16 file(s)

UR-012

Locations: 9 file(s)

UR-013

Locations: 2 file(s)

UR-014

Locations: 1 file(s)

UR-015

Locations: 13 file(s)

UR-019

Locations: 13 file(s)

UR-021

Locations: 6 file(s)

UR-023

Locations: 24 file(s)

UR-024

Locations: 2 file(s)

UR-025

Locations: 69 file(s)

UR-026

Locations: 19 file(s)

UR-027

Locations: 23 file(s)

UR-029

Locations: 5 file(s)

UR-034

Locations: 10 file(s)

UR-035

Locations: 5 file(s)

UR-038

Locations: 1 file(s)

UR-040

Locations: 59 file(s)

UR-042

Locations: 2 file(s)

UR-043

Locations: 2 file(s)

UR-047

Locations: 1 file(s)

UR-048

Locations: 6 file(s)

UR-049

Locations: 22 file(s)

UR-052

Locations: 23 file(s)

UR-055

Locations: 54 file(s)

UR-056

Locations: 17 file(s)

UR-057

Locations: 1 file(s)

UR-058

Locations: 11 file(s)

UR-059

Locations: 6 file(s)

UR-062

Locations: 17 file(s)

UR-063

Locations: 10 file(s)

UR-066

Locations: 11 file(s)

UR-067

Locations: 41 file(s)

UR-068

Locations: 14 file(s)

IT-003

Locations: 1 file(s)

IT-004

Locations: 1 file(s)

IT-013

Locations: 4 file(s)

IT-016

Locations: 1 file(s)

IT-017

Locations: 1 file(s)

UT-003

Locations: 1 file(s)

UT-004

Locations: 1 file(s)

UT-005

Locations: 1 file(s)

UT-010

Locations: 1 file(s)

UT-012

Locations: 1 file(s)

UT-014

Locations: 2 file(s)

UT-015

Locations: 2 file(s)

UT-016

Locations: 2 file(s)

UT-017

Locations: 2 file(s)

UT-018

Locations: 2 file(s)

UT-019

Locations: 2 file(s)

UT-020

Locations: 2 file(s)

UT-021

Locations: 2 file(s)

UT-022

Locations: 2 file(s)

UT-023

Locations: 2 file(s)

UT-024

Locations: 1 file(s)

UT-025

Locations: 2 file(s)

UT-026

Locations: 2 file(s)

UT-027

Locations: 1 file(s)

UT-028

Locations: 1 file(s)

UT-029

Locations: 1 file(s)

UT-030

Locations: 1 file(s)

UT-031

Locations: 1 file(s)

UT-032

Locations: 1 file(s)

UT-033

Locations: 1 file(s)

UT-042

Locations: 1 file(s)

UT-043

Locations: 1 file(s)

UT-044

Locations: 1 file(s)

UT-051

Locations: 1 file(s)

UT-052

Locations: 1 file(s)

UT-059

Locations: 3 file(s)

UT-060

Locations: 3 file(s)

UT-061

Locations: 9 file(s)

UT-062

Locations: 1 file(s)

UT-066

Locations: 1 file(s)

UT-067

Locations: 1 file(s)

UT-071

Locations: 1 file(s)

UT-072

Locations: 1 file(s)

UT-073

Locations: 1 file(s)

UT-074

Locations: 1 file(s)

UT-075

Locations: 1 file(s)

UT-076

Locations: 1 file(s)

UT-077

Locations: 1 file(s)

UT-078

Locations: 1 file(s)

UT-079

Locations: 1 file(s)

UT-080

Locations: 1 file(s)

UT-081

Locations: 1 file(s)

UT-082

Locations: 1 file(s)

UT-083

Locations: 1 file(s)

UT-084

Locations: 1 file(s)

UT-089

Locations: 1 file(s)

UT-090

Locations: 1 file(s)

UT-091

Locations: 2 file(s)

UT-092

Locations: 3 file(s)

UT-093

Locations: 2 file(s)

UT-094

Locations: 1 file(s)

UT-095

Locations: 1 file(s)

UT-096

Locations: 1 file(s)

UT-097

Locations: 1 file(s)

UT-098

Locations: 1 file(s)

UT-099

Locations: 3 file(s)

UT-100

Locations: 6 file(s)

UT-101

Locations: 4 file(s)

UT-102

Locations: 2 file(s)

UT-103

Locations: 6 file(s)

UT-105

Locations: 3 file(s)

UT-106

Locations: 3 file(s)

UR-060

Locations: 7 file(s)

UR-069

Locations: 24 file(s)

UR-071

Locations: 63 file(s)

UR-072

Locations: 1 file(s)

UR-074

Locations: 48 file(s)

UR-075

Locations: 12 file(s)

UT-108

Locations: 2 file(s)

UT-109

Locations: 1 file(s)

UT-110

Locations: 1 file(s)

UT-111

Locations: 3 file(s)

UT-112

Locations: 2 file(s)

UT-113

Locations: 2 file(s)

UT-114

Locations: 2 file(s)

UT-115

Locations: 2 file(s)

UT-116

Locations: 4 file(s)

UT-117

Locations: 7 file(s)

UR-002

Locations: 21 file(s)

UR-009

Locations: 15 file(s)

UR-011

Locations: 11 file(s)

UR-017

Locations: 10 file(s)

UR-018

Locations: 20 file(s)

UR-050

Locations: 9 file(s)

UR-064

Locations: 7 file(s)

UR-073

Locations: 6 file(s)

UT-085

Locations: 2 file(s)

UT-086

Locations: 2 file(s)

UT-104

Locations: 7 file(s)

UT-107

Locations: 6 file(s)

UT-118

Locations: 1 file(s)

UT-119

Locations: 2 file(s)

UT-120

Locations: 2 file(s)

UT-121

Locations: 2 file(s)

UT-122

Locations: 11 file(s)

UT-123

Locations: 2 file(s)

UT-124

Locations: 1 file(s)

UT-125

Locations: 3 file(s)

UT-126

Locations: 2 file(s)

UT-127

Locations: 11 file(s)

UT-130

Locations: 3 file(s)

UT-137

Locations: 1 file(s)

UT-138

Locations: 1 file(s)

UT-139

Locations: 1 file(s)

UT-140

Locations: 1 file(s)

UT-141

Locations: 2 file(s)

UT-142

Locations: 1 file(s)

UT-143

Locations: 3 file(s)

UT-144

Locations: 3 file(s)

UT-145

Locations: 5 file(s)

UT-146

Locations: 3 file(s)

UT-147

Locations: 8 file(s)

UT-148

Locations: 3 file(s)

UT-149

Locations: 2 file(s)

UT-150

Locations: 1 file(s)

UT-152

Locations: 4 file(s)

UT-154

Locations: 2 file(s)

UT-155

Locations: 3 file(s)

UT-156

Locations: 4 file(s)

UT-157

Locations: 3 file(s)

UT-161

Locations: 4 file(s)

UT-162

Locations: 1 file(s)

UT-163

Locations: 1 file(s)

UT-164

Locations: 1 file(s)

UT-166

Locations: 7 file(s)

UT-168

Locations: 24 file(s)

UT-170

Locations: 8 file(s)

UR-053

Locations: 17 file(s)

UT-151

Locations: 7 file(s)

UT-171

Locations: 2 file(s)

UT-172

Locations: 3 file(s)

UT-173

Locations: 5 file(s)

UT-174

Locations: 2 file(s)

UT-175

Locations: 1 file(s)

UT-176

Locations: 3 file(s)

UT-177

Locations: 6 file(s)

UT-178

Locations: 3 file(s)

UT-179

Locations: 4 file(s)

UT-180

Locations: 3 file(s)

UT-182

Locations: 5 file(s)

UR-020

Locations: 48 file(s)

UR-028

Locations: 2 file(s)

UR-036

Locations: 3 file(s)

UR-041

Locations: 3 file(s)

UR-061

Locations: 4 file(s)

UT-087

Locations: 2 file(s)

UT-088

Locations: 1 file(s)

UT-131

Locations: 1 file(s)

UT-132

Locations: 1 file(s)

UT-133

Locations: 1 file(s)

UT-134

Locations: 1 file(s)

UT-135

Locations: 1 file(s)

UT-136

Locations: 1 file(s)

UT-158

Locations: 1 file(s)

UT-159

Locations: 1 file(s)

UT-160

Locations: 1 file(s)

UT-167

Locations: 1 file(s)

UT-183

Locations: 2 file(s)

UT-184

Locations: 2 file(s)

UT-185

Locations: 2 file(s)

UT-186

Locations: 1 file(s)

UT-187

Locations: 1 file(s)

UT-188

Locations: 4 file(s)

UT-189

Locations: 1 file(s)

UR-008

Locations: 2 file(s)

UR-010

Locations: 16 file(s)

UR-016

Locations: 2 file(s)

UR-022

Locations: 1 file(s)

UR-030

Locations: 2 file(s)

UR-031

Locations: 2 file(s)

UR-032

Locations: 7 file(s)

UR-033

Locations: 12 file(s)

UR-039

Locations: 1 file(s)

UR-051

Locations: 2 file(s)

UR-054

Locations: 7 file(s)

UT-181

Locations: 6 file(s)

UR-044

Locations: 1 file(s)

UR-045

Locations: 1 file(s)

UR-046

Locations: 1 file(s)

UR-065

Locations: 22 file(s)