Files
jellytau/docs/traceability.md
T
dtourolle dccb5f53dd fix(android): stop the rotation cross-fade replaying the old video frame
Rotating with native video on shows the previous frame flashing in what become
the letterbox bars. It reads as a TextureView artefact — the view retains its
last frame, so between the rotation and fitSurfaceToScreen() landing that frame
sits at the old size — and two fixes were built on that reading:

  1. reveal after two postOnAnimation hops. An animation frame is not a video
     frame; at 24fps the next decoded frame can be several vsyncs away.
  2. reveal on onSurfaceTextureUpdated, i.e. when a real frame lands. This meant
     owning the SurfaceTextureListener and handing ExoPlayer the Surface directly
     instead of via setVideoTextureView, which installs its own and leaves us
     blind to frame arrival.

Neither stopped the flash. The mechanism is the WINDOW's rotation animation:
Android cross-fades a screenshot of the old orientation, that screenshot holds
the old video frame at the old size, and nothing at the TextureView level can
reach it. The app cannot pre-empt the screenshot either — onConfigurationChanged
fires after it is taken.

So the animation itself has to go: ROTATION_ANIMATION_JUMPCUT. That was accepted
and silently ignored, and the platform said why out loud —
"VRI[MainActivity]: setLayoutParams: not fullscreen" — because the attribute is
honoured only for a fullscreen window. FLAG_FULLSCREEN is therefore set with it,
scoped to while native compositing is active so the rest of the app keeps its
normal animation. After the change that complaint is gone from logcat.

The frame-arrival reveal is kept: it replaces a fixed-timeout guess with a real
signal, and its timeout is required rather than defensive — a resize while paused
means no new frame is ever coming, and revealing a stale frame beats a
permanently black player.

NOT CONFIRMED FIXED on device. The forced-rotation harness
(settings put system user_rotation) proved unreliable here, and screenrecord
fixes its canvas at start, so a rotation inside a recording never changes frame
dimensions — which defeated two separate attempts to measure this. DR-194 is
recorded as "Needs device verification" rather than Done.
2026-08-16 18:46:15 +02:00

376 KiB

Code Traceability Matrix

Generated: 8/16/2026, 6:45:35 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-004

Locations: 62 file(s)

UR-009

Locations: 15 file(s)

UR-023

Locations: 24 file(s)

UR-026

Locations: 19 file(s)

UR-027

Locations: 23 file(s)

UR-028

Locations: 2 file(s)

UR-036

Locations: 3 file(s)

UR-040

Locations: 59 file(s)

IT-013

Locations: 4 file(s)

UT-010

Locations: 1 file(s)

UT-024

Locations: 1 file(s)

UT-052

Locations: 1 file(s)

UT-060

Locations: 3 file(s)

UT-061

Locations: 9 file(s)

UR-003

Locations: 42 file(s)

UR-005

Locations: 103 file(s)

UR-018

Locations: 20 file(s)

UR-020

Locations: 48 file(s)

UR-025

Locations: 69 file(s)

UR-049

Locations: 22 file(s)

UR-050

Locations: 9 file(s)

UR-053

Locations: 17 file(s)

UR-055

Locations: 54 file(s)

UR-056

Locations: 17 file(s)

UR-062

Locations: 17 file(s)

UR-064

Locations: 7 file(s)

UR-067

Locations: 41 file(s)

UR-071

Locations: 63 file(s)

UR-073

Locations: 6 file(s)

UR-074

Locations: 48 file(s)

UT-062

Locations: 1 file(s)

UT-066

Locations: 1 file(s)

UT-071

Locations: 1 file(s)

UT-085

Locations: 2 file(s)

UT-086

Locations: 2 file(s)

UT-087

Locations: 2 file(s)

UT-088

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-104

Locations: 7 file(s)

UT-105

Locations: 3 file(s)

UT-106

Locations: 3 file(s)

UT-107

Locations: 6 file(s)

UT-116

Locations: 4 file(s)

UT-117

Locations: 7 file(s)

UT-118

Locations: 1 file(s)

UT-123

Locations: 2 file(s)

UT-124

Locations: 1 file(s)

UT-133

Locations: 1 file(s)

UT-134

Locations: 1 file(s)

UT-136

Locations: 1 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-143

Locations: 3 file(s)

UT-144

Locations: 3 file(s)

UT-145

Locations: 5 file(s)

UT-147

Locations: 8 file(s)

UT-149

Locations: 2 file(s)

UT-151

Locations: 7 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-168

Locations: 24 file(s)

UT-170

Locations: 8 file(s)

UT-182

Locations: 5 file(s)

UR-002

Locations: 21 file(s)

UR-007

Locations: 16 file(s)

UR-008

Locations: 2 file(s)

UR-011

Locations: 11 file(s)

UR-012

Locations: 9 file(s)

UR-013

Locations: 2 file(s)

UR-015

Locations: 13 file(s)

UR-017

Locations: 10 file(s)

UR-019

Locations: 13 file(s)

UR-021

Locations: 6 file(s)

UR-024

Locations: 2 file(s)

UR-043

Locations: 2 file(s)

UR-047

Locations: 1 file(s)

UR-059

Locations: 6 file(s)

UR-060

Locations: 7 file(s)

UR-061

Locations: 4 file(s)

UR-072

Locations: 1 file(s)

UR-075

Locations: 12 file(s)

IT-003

Locations: 1 file(s)

IT-004

Locations: 1 file(s)

IT-016

Locations: 1 file(s)

UT-003

Locations: 1 file(s)

UT-004

Locations: 1 file(s)

UT-005

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-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-051

Locations: 1 file(s)

UT-059

Locations: 3 file(s)

UT-067

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-099

Locations: 3 file(s)

UT-100

Locations: 6 file(s)

UT-101

Locations: 4 file(s)

UT-102

Locations: 2 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-120

Locations: 2 file(s)

UT-121

Locations: 2 file(s)

UT-122

Locations: 11 file(s)

UT-127

Locations: 11 file(s)

UT-130

Locations: 3 file(s)

UT-141

Locations: 2 file(s)

UT-142

Locations: 1 file(s)

UT-146

Locations: 3 file(s)

UR-029

Locations: 5 file(s)

UR-030

Locations: 2 file(s)

UR-034

Locations: 10 file(s)

UR-035

Locations: 5 file(s)

UR-039

Locations: 1 file(s)

UR-048

Locations: 6 file(s)

UR-051

Locations: 2 file(s)

UR-052

Locations: 23 file(s)

UR-054

Locations: 7 file(s)

UR-058

Locations: 11 file(s)

UR-066

Locations: 11 file(s)

UR-068

Locations: 14 file(s)

UT-131

Locations: 1 file(s)

UT-132

Locations: 1 file(s)

UT-135

Locations: 1 file(s)

UR-063

Locations: 10 file(s)

UT-148

Locations: 3 file(s)

UT-150

Locations: 1 file(s)

UT-154

Locations: 2 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-174

Locations: 2 file(s)

UT-175

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-010

Locations: 16 file(s)

UR-016

Locations: 2 file(s)

UR-038

Locations: 1 file(s)

UR-041

Locations: 3 file(s)

UR-042

Locations: 2 file(s)

UR-057

Locations: 1 file(s)

UR-065

Locations: 22 file(s)

UR-069

Locations: 24 file(s)

IT-017

Locations: 1 file(s)

UT-042

Locations: 1 file(s)

UT-043

Locations: 1 file(s)

UT-044

Locations: 1 file(s)

UT-103

Locations: 6 file(s)

UT-115

Locations: 2 file(s)

UT-119

Locations: 2 file(s)

UT-125

Locations: 3 file(s)

UT-126

Locations: 2 file(s)

UT-152

Locations: 4 file(s)

UT-155

Locations: 3 file(s)

UT-166

Locations: 7 file(s)

UT-171

Locations: 2 file(s)

UT-172

Locations: 3 file(s)

UR-014

Locations: 1 file(s)

UR-022

Locations: 1 file(s)

UR-031

Locations: 2 file(s)

UR-032

Locations: 7 file(s)

UR-033

Locations: 12 file(s)

UR-044

Locations: 1 file(s)

UR-045

Locations: 1 file(s)

UT-173

Locations: 5 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-181

Locations: 6 file(s)

UR-046

Locations: 1 file(s)