feat: add option to ignore focus changes for a specified duration

- Makefile computes version automatically
- added version flag for splash cli

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+mail@adityagupta.dev.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -0,0 +1,84 @@
+# Contributing to gsplash
+
+Thanks for your interest in contributing. gsplash is a small utility and contributions that keep it that way are most welcome.
+
+## What to work on
+
+Check the issue tracker on [GitHub](https://github.com/sortedcord/gsplash) for open issues. If you want to add something new, open an issue first to discuss it before writing code. This avoids wasted effort if the change isn't a good fit for the project.
+
+Good areas to contribute:
+
+- Bug fixes (see known issues in README or open issues)
+- Broader video format or image format support
+- Wayland compatibility improvements
+- Packaging for other distributions
+
+## Building
+
+You'll need:
+
+- GCC or Clang
+- make, pkg-config
+- SDL2, SDL2\_image
+- ffmpeg (`libavformat`, `libavcodec`, `libswscale`, `libavutil`)
+
+On Arch Linux:
+
+```bash
+sudo pacman -S sdl2 sdl2_image ffmpeg
+```
+
+On Ubuntu/Debian:
+
+```bash
+sudo apt install libsdl2-dev libsdl2-image-dev libavformat-dev libavcodec-dev libswscale-dev libavutil-dev
+```
+
+Then build:
+
+```bash
+make
+```
+
+The binary is output to `build/gsplash`.
+
+## Testing
+
+Before submitting a PR, run the automated test suite:
+
+```bash
+make check
+```
+
+This runs a headless smoke test and the CLI argument validation suite. Both must pass.
+
+For visual changes (render modes, layout), also run the interactive test with a real image:
+
+```bash
+./tests/test_interactive.sh path/to/image.png
+```
+
+If you're adding new CLI arguments or flags, add corresponding cases to `tests/test_cli.sh`.
+
+## Code style
+
+- Match the existing style: 4-space indentation, `snake_case`, braces on their own line.
+- All new functions in `video.c`/`video.h` should have declarations in the header.
+- Avoid adding new dependencies unless there's a strong reason. SDL2 and ffmpeg are already heavy. 
+
+## Submitting a PR
+
+1. Fork the repo and create a branch from `main`.
+2. Keep commits focused — one logical change per commit.
+3. Write a clear PR description explaining what the change does and why.
+4. If the change fixes a bug, reference the issue number.
+5. PRs should target `github.com/sortedcord/gsplash` — this is the canonical public remote.
+
+## Reporting bugs
+
+Open an issue on GitHub with:
+
+- Your OS and desktop environment
+- The gsplash version or commit hash
+- The command you ran
+- The full stderr output (gsplash logs to stderr via `[splash]` prefixed lines)

LICENSE

@@ -0,0 +1,621 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS

Makefile

@@ -1,10 +1,13 @@
 # Makefile for gsplash (community-standard layout)
 
+VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo "unknown")
+
 PREFIX ?= /usr/local
 bindir ?= $(PREFIX)/bin
 
 CC ?= gcc
 CFLAGS ?= -O2 -Wall -Wextra
+CFLAGS += -DGSPLASH_VERSION=\"$(VERSION)\"
 PKG_CONFIG ?= pkg-config
 
 SDL_CFLAGS := $(shell $(PKG_CONFIG) --cflags sdl2 SDL2_image)

PKGBUILD

@@ -1,22 +0,0 @@
-pkgname=gsplash-git
-pkgver=0.1.0
-pkgrel=1
-pkgdesc="A lightweight native SDL2 splash screen wrapper for game launchers."
-arch=('x86_64')
-license=('custom')
-depends=('sdl2' 'sdl2_image' 'ffmpeg')
-makedepends=('make' 'gcc' 'pkgconf')
-
-# Leave this empty so makepkg doesn't look for external downloads or local copies
-source=()
-sha256sums=()
-
-build() {
-  cd "$startdir"
-  make
-}
-
-package() {
-  cd "$startdir"
-  make DESTDIR="$pkgdir" PREFIX="/usr" install
-}

README.md

@@ -22,9 +22,16 @@ https://github.com/user-attachments/assets/22da49b4-0f1f-4208-8d0b-9eeef14e35e5
 
 ## Install
 
-Arch Linux (PKGBUILD) for integrating with your system package manager:
+Arch Linux users can install the latest development package from the [AUR](https://aur.archlinux.org/packages/gsplash-git) using an AUR helper like `yay` or `paru`:
 
 ```bash
+yay -S gsplash-git
+```
+
+Alternatively, you can build it manually using the provided PKGBUILD:
+
+```bash
+cd packaging/arch
 makepkg -si
 ```
 
@@ -44,7 +51,7 @@ DESTDIR=/some/staging/path make install
 ## Usage
 
 ```bash
-gsplash <image_or_video_path> <game_executable> [game_arguments...]
+gsplash [options] <image_or_video_path> <game_executable> [game_arguments...]
 ```
 
 Example:
@@ -65,9 +72,17 @@ Gsplash allows you to configure how the image or video is displayed with 3 modes
 You can set these by using the `-m` or `--mode` flag:
 
 ```bash
-build/gsplash [--mode=stretch|center|crop] <background> <executable> [args...]
+gsplash [--mode=stretch|center|crop] <background> <executable> [args...]
 
-build/gsplash -m stretch|center|crop <background> <executable> [args...]
+gsplash -m stretch|center|crop <background> <executable> [args...]
+```
+
+You can optionally protect the splash screen from dismissing on focus changes for a given number of seconds using `-i` or `--ignore-focus=SEC`. This is useful if the game process itself brings up a short-lived focus window before the main game window opens:
+
+```bash
+gsplash --ignore-focus=2.5 <background> <executable> [args...]
+
+gsplash -i 2.5 <background> <executable> [args...]
 ```
 
 
@@ -103,3 +118,6 @@ For manual testing, a `dummy_game` binary is built alongside `gsplash`. It mimic
 ./build/gsplash path/to/image.png ./build/dummy_game 10
 ```
 
+## Contributing
+
+Please go through the [CONTRIBUTING.md](CONTRIBUTING.md) guidelines if you'd like to contribute to gsplash.

packaging/arch/PKGBUILD

@@ -0,0 +1,28 @@
+pkgname=gsplash-git
+pkgver=r23.1a0712c
+pkgrel=1
+pkgdesc="A lightweight native SDL2 splash screen wrapper for game launchers."
+arch=('x86_64')
+url="https://github.com/sortedcord/gsplash"
+license=('GPL3')
+depends=('sdl2' 'sdl2_image' 'ffmpeg')
+makedepends=('make' 'git' 'pkgconf')
+
+source=("git+https://github.com/sortedcord/gsplash.git")
+sha256sums=('SKIP')
+
+pkgver() {
+  cd "gsplash"
+  printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+
+build() {
+  cd "gsplash"
+  make
+}
+
+package() {
+  cd "gsplash"
+  make DESTDIR="$pkgdir" PREFIX="/usr" install
+  install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+}

src/gsplash.c

@@ -1,409 +1,411 @@
 #include <SDL2/SDL.h>
 #include <SDL2/SDL_image.h>
-#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <math.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 #include <sys/wait.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <errno.h>
-#include <string.h>
-#include <math.h>
-#include <stdbool.h>
-#include <ctype.h>
+#include <unistd.h>
 
 #include "video.h"
 
-static void log_info(const char *fmt, ...)
-{
-    va_list args;
-    fprintf(stderr, "[splash] ");
-    va_start(args, fmt);
-    vfprintf(stderr, fmt, args);
-    va_end(args);
-    fputc('\n', stderr);
-    fflush(stderr);
+static void log_info(const char* fmt, ...) {
+  va_list args;
+  fprintf(stderr, "[splash] ");
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  va_end(args);
+  fputc('\n', stderr);
+  fflush(stderr);
 }
 
-static void log_error(const char *fmt, ...)
-{
-    va_list args;
-    fprintf(stderr, "[splash][error] ");
-    va_start(args, fmt);
-    vfprintf(stderr, fmt, args);
-    va_end(args);
-    fputc('\n', stderr);
-    fflush(stderr);
+static void log_error(const char* fmt, ...) {
+  va_list args;
+  fprintf(stderr, "[splash][error] ");
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  va_end(args);
+  fputc('\n', stderr);
+  fflush(stderr);
 }
 
-typedef enum RenderMode
-{
-    RENDER_STRETCH = 0,
-    RENDER_CENTER,
-    RENDER_CROP
+typedef enum RenderMode {
+  RENDER_STRETCH = 0,
+  RENDER_CENTER,
+  RENDER_CROP
 } RenderMode;
 
-static RenderMode parse_render_mode(const char *value)
-{
-    if (strcmp(value, "center") == 0)
-    {
-        return RENDER_CENTER;
-    }
-    if (strcmp(value, "crop") == 0)
-    {
-        return RENDER_CROP;
-    }
-    return RENDER_STRETCH;
+static RenderMode parse_render_mode(const char* value) {
+  if (strcmp(value, "center") == 0) {
+    return RENDER_CENTER;
+  }
+  if (strcmp(value, "crop") == 0) {
+    return RENDER_CROP;
+  }
+  return RENDER_STRETCH;
 }
 
-static void compute_dest_rect(int src_w, int src_h, int out_w, int out_h, RenderMode mode, SDL_Rect *dst)
-{
-    dst->x = 0;
-    dst->y = 0;
-    dst->w = out_w;
-    dst->h = out_h;
+static void compute_dest_rect(int src_w, int src_h, int out_w, int out_h,
+                              RenderMode mode, SDL_Rect* dst) {
+  /*
+  Calculate the destination rectangle for rendering the splash image/video based
+  on the specified render mode. The rectangle is centered by default, and its
+  size is adjusted according to the mode:
 
-    if (src_w <= 0 || src_h <= 0 || out_w <= 0 || out_h <= 0)
-    {
-        return;
-    }
+  - RENDER_STRETCH: The image/video is stretched to fill the entire output area,
+    ignoring aspect ratio.
+  - RENDER_CENTER: The image/video is scaled to fit within the output area while
+    maintaining aspect ratio, and centered with potential letterboxing.
+  - RENDER_CROP: The image/video is scaled to fill the entire output area while
+    maintaining aspect ratio, and centered with potential cropping.
+  */
 
-    if (mode == RENDER_CENTER)
-    {
-        float scale = fminf((float)out_w / (float)src_w, (float)out_h / (float)src_h);
-        dst->w = (int)(src_w * scale);
-        dst->h = (int)(src_h * scale);
-        dst->x = (out_w - dst->w) / 2;
-        dst->y = (out_h - dst->h) / 2;
-    }
-    else if (mode == RENDER_CROP)
-    {
-        float scale = fmaxf((float)out_w / (float)src_w, (float)out_h / (float)src_h);
-        dst->w = (int)(src_w * scale);
-        dst->h = (int)(src_h * scale);
-        dst->x = (out_w - dst->w) / 2;
-        dst->y = (out_h - dst->h) / 2;
-    }
+  // Set default to full output size (stretch)
+  dst->x = 0;
+  dst->y = 0;
+  dst->w = out_w;
+  dst->h = out_h;
+
+  // Safety check
+  if (src_w <= 0 || src_h <= 0 || out_w <= 0 || out_h <= 0) {
+    return;
+  }
+
+  if (mode == RENDER_CENTER) {
+    float scale =
+        fminf((float)out_w / (float)src_w, (float)out_h / (float)src_h);
+    dst->w = (int)(src_w * scale);
+    dst->h = (int)(src_h * scale);
+    dst->x = (out_w - dst->w) / 2;
+    dst->y = (out_h - dst->h) / 2;
+  } else if (mode == RENDER_CROP) {
+    float scale =
+        fmaxf((float)out_w / (float)src_w, (float)out_h / (float)src_h);
+    dst->w = (int)(src_w * scale);
+    dst->h = (int)(src_h * scale);
+    dst->x = (out_w - dst->w) / 2;
+    dst->y = (out_h - dst->h) / 2;
+  }
 }
 
-int main(int argc, char *argv[])
-{
-    RenderMode render_mode = RENDER_CENTER;
-    int arg_index = 1;
+int main(int argc, char* argv[]) {
+  RenderMode render_mode = RENDER_CENTER;
+  float focus_ignore_seconds = 0.0f;
+  int arg_index = 1;
 
-    if (argc >= 3 && strncmp(argv[1], "--mode=", 7) == 0)
-    {
-        render_mode = parse_render_mode(argv[1] + 7);
-        arg_index += 1;
-    }
-    else if (argc >= 2 && strcmp(argv[1], "-m") == 0)
-    {
-        if (argc < 4)
-        {
-            log_error("Usage: %s [--mode=stretch|center|crop] <image_path> <game_executable> [args...]", argv[0]);
-            log_error("       %s -m stretch|center|crop <image_path> <game_executable> [args...]", argv[0]);
-            return 1;
-        }
-        render_mode = parse_render_mode(argv[2]);
-        arg_index += 2;
-    }
+#ifndef GSPLASH_VERSION
+#define GSPLASH_VERSION "unknown"
+#endif
 
-    if (argc - arg_index < 2)
-    {
-        log_error("Usage: %s [--mode=stretch|center|crop] <image_path> <game_executable> [args...]", argv[0]);
-        log_error("       %s -m stretch|center|crop <image_path> <game_executable> [args...]", argv[0]);
+  while (arg_index < argc && argv[arg_index][0] == '-') {
+    if (strcmp(argv[arg_index], "--") == 0) {
+      arg_index++;
+      break;
+    } else if (strncmp(argv[arg_index], "--mode=", 7) == 0) {
+      render_mode = parse_render_mode(argv[arg_index] + 7);
+      arg_index++;
+    } else if (strcmp(argv[arg_index], "-m") == 0) {
+      if (arg_index + 1 >= argc) {
+        log_error("Missing value for option -m");
         return 1;
-    }
-
-    const char *image_path = argv[arg_index];
-    const char *game_path = argv[arg_index + 1];
-
-    log_info("Starting splash: image='%s', game='%s', mode=%d", image_path, game_path, render_mode);
-
-    // Initialize SDL2 Video subsystems
-    if (SDL_Init(SDL_INIT_VIDEO) < 0)
-    {
-        log_error("SDL Init Failed: %s", SDL_GetError());
+      }
+      render_mode = parse_render_mode(argv[arg_index + 1]);
+      arg_index += 2;
+    } else if (strncmp(argv[arg_index], "--ignore-focus=", 15) == 0) {
+      focus_ignore_seconds = atof(argv[arg_index] + 15);
+      arg_index++;
+    } else if (strcmp(argv[arg_index], "-i") == 0) {
+      if (arg_index + 1 >= argc) {
+        log_error("Missing value for option -i");
         return 1;
+      }
+      focus_ignore_seconds = atof(argv[arg_index + 1]);
+      arg_index += 2;
+    } else if (strcmp(argv[arg_index], "--version") == 0 ||
+               strcmp(argv[arg_index], "-v") == 0) {
+      printf("gsplash version %s\n", GSPLASH_VERSION);
+      return 0;
+    } else if (strcmp(argv[arg_index], "-h") == 0 ||
+               strcmp(argv[arg_index], "--help") == 0) {
+      printf("Usage: %s [options] <image_path> <game_executable> [args...]\n",
+             argv[0]);
+      printf("Options:\n");
+      printf("  -v, --version           Show version information\n");
+      printf(
+          "  -m, --mode=MODE         Set render mode: stretch, center "
+          "(default), "
+          "crop\n");
+      printf(
+          "  -i, --ignore-focus=SEC  Ignore focus changes for a given amount "
+          "of seconds\n");
+      printf("  -h, --help              Show this help message\n");
+      return 0;
+    } else {
+      log_error("Unknown option: %s", argv[arg_index]);
+      return 1;
     }
-    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
-    log_info("SDL initialized");
+  }
 
-    // Initialize JPEG and PNG decoders
-    if (!(IMG_Init(IMG_INIT_JPG | IMG_INIT_PNG) & (IMG_INIT_JPG | IMG_INIT_PNG)))
-    {
-        log_error("SDL_image Init Failed: %s", IMG_GetError());
-        SDL_Quit();
-        return 1;
+  if (argc - arg_index < 2) {
+    log_error("Missing required arguments. Use --help for usage.");
+    return 1;
+  }
+
+  const char* image_path = argv[arg_index];
+  const char* game_path = argv[arg_index + 1];
+
+  log_info("Starting splash: image='%s', game='%s', mode=%d", image_path,
+           game_path, render_mode);
+
+  // Initialize SDL2 Video subsystems
+  if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+    log_error("SDL Init Failed: %s", SDL_GetError());
+    return 1;
+  }
+  SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
+  log_info("SDL initialized");
+
+  // Initialize JPEG and PNG decoders
+  if (!(IMG_Init(IMG_INIT_JPG | IMG_INIT_PNG) &
+        (IMG_INIT_JPG | IMG_INIT_PNG))) {
+    log_error("SDL_image Init Failed: %s", IMG_GetError());
+    SDL_Quit();
+    return 1;
+  }
+  log_info("SDL_image initialized (JPG/PNG)");
+
+  // Create a native borderless fullscreen window
+  SDL_Window* window = SDL_CreateWindow(
+      "Game Splash Screen", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 0,
+      0, SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_BORDERLESS);
+
+  if (!window) {
+    log_error("Window Creation Failed: %s", SDL_GetError());
+    IMG_Quit();
+    SDL_Quit();
+    return 1;
+  }
+  log_info("Fullscreen borderless window created");
+
+  SDL_ShowCursor(SDL_DISABLE);  // Hide the mouse pointer
+
+  // Create a hardware-accelerated renderer
+  SDL_Renderer* renderer =
+      SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+  if (renderer) {
+    log_info("Renderer created (accelerated)");
+  }
+  SDL_Texture* texture = NULL;
+  VideoPlayer video_player;
+  bool video_active = false;
+
+  if (has_video_extension(image_path)) {
+    if (init_video_player(&video_player, renderer, image_path)) {
+      video_active = true;
+    } else {
+      log_error("Failed to open video '%s'; showing black screen", image_path);
     }
-    log_info("SDL_image initialized (JPG/PNG)");
-
-    // Create a native borderless fullscreen window
-    SDL_Window *window = SDL_CreateWindow(
-        "Game Splash Screen",
-        SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
-        0, 0,
-        SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_BORDERLESS);
-
-    if (!window)
-    {
-        log_error("Window Creation Failed: %s", SDL_GetError());
-        IMG_Quit();
-        SDL_Quit();
-        return 1;
-    }
-    log_info("Fullscreen borderless window created");
-
-    SDL_ShowCursor(SDL_DISABLE); // Hide the mouse pointer
-
-    // Create a hardware-accelerated renderer
-    SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
-    if (renderer)
-    {
-        log_info("Renderer created (accelerated)");
-    }
-    SDL_Texture *texture = NULL;
-    VideoPlayer video_player;
-    bool video_active = false;
-
-    if (has_video_extension(image_path))
-    {
-        if (init_video_player(&video_player, renderer, image_path))
-        {
-            video_active = true;
-        }
-        else
-        {
-            log_error("Failed to open video '%s'; showing black screen", image_path);
+  } else {
+    SDL_Surface* surface = IMG_Load(image_path);
+    if (surface) {
+      SDL_Surface* rgba_surface =
+          SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_RGBA32, 0);
+      SDL_FreeSurface(surface);
+      if (rgba_surface) {
+        texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA32,
+                                    SDL_TEXTUREACCESS_STREAMING,
+                                    rgba_surface->w, rgba_surface->h);
+        if (texture) {
+          SDL_UpdateTexture(texture, NULL, rgba_surface->pixels,
+                            rgba_surface->pitch);
+        } else {
+          log_error("Failed to create texture: %s", SDL_GetError());
         }
+        SDL_FreeSurface(rgba_surface);
+      }
     }
-    else
-    {
-        SDL_Surface *surface = IMG_Load(image_path);
-        if (surface)
-        {
-            SDL_Surface *rgba_surface = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_RGBA32, 0);
-            SDL_FreeSurface(surface);
-            if (rgba_surface)
-            {
-                texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA32,
-                                            SDL_TEXTUREACCESS_STREAMING,
-                                            rgba_surface->w, rgba_surface->h);
-                if (texture)
-                {
-                    SDL_UpdateTexture(texture, NULL, rgba_surface->pixels, rgba_surface->pitch);
-                }
-                else
-                {
-                    log_error("Failed to create texture: %s", SDL_GetError());
-                }
-                SDL_FreeSurface(rgba_surface);
-            }
-        }
-        if (!texture && init_video_player(&video_player, renderer, image_path))
-        {
-            video_active = true;
-        }
+    if (!texture && init_video_player(&video_player, renderer, image_path)) {
+      video_active = true;
     }
+  }
+
+  if (!texture && !video_active) {
+    log_error("Failed to load splash image '%s': %s; showing black screen",
+              image_path, IMG_GetError());
+    // Fallback: Clear to solid black if image file is broken
+    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+    SDL_RenderClear(renderer);
+    SDL_RenderPresent(renderer);
+  } else {
+    SDL_Rect dst_rect = {0, 0, 0, 0};
+    int out_w = 0;
+    int out_h = 0;
+
+    SDL_GetRendererOutputSize(renderer, &out_w, &out_h);
+
+    if (video_active) {
+      log_info("Video splash loaded");
+      compute_dest_rect(video_player.width, video_player.height, out_w, out_h,
+                        render_mode, &dst_rect);
+      decode_next_frame(&video_player);
+      SDL_RenderClear(renderer);
+      SDL_RenderCopy(renderer, video_player.texture, NULL, &dst_rect);
+      SDL_RenderPresent(renderer);
+    } else if (texture) {
+      int tex_w = 0;
+      int tex_h = 0;
+
+      log_info("Splash image loaded");
+      if (SDL_QueryTexture(texture, NULL, NULL, &tex_w, &tex_h) == 0) {
+        compute_dest_rect(tex_w, tex_h, out_w, out_h, render_mode, &dst_rect);
+      }
+
+      SDL_RenderClear(renderer);
+      if (dst_rect.w > 0 && dst_rect.h > 0) {
+        SDL_RenderCopy(renderer, texture, NULL, &dst_rect);
+      } else {
+        SDL_RenderCopy(renderer, texture, NULL, NULL);
+      }
+      SDL_RenderPresent(renderer);
+    }
+  }
+
+  // Fork the process to run the game
+  log_info("Launching game executable");
+  Uint32 launch_time = SDL_GetTicks();
+  pid_t pid = fork();
+  if (pid == 0) {
+    // Inside Child Process: Hand over execution directly to the game binary
+    log_info("Execing game: %s", game_path);
+    execvp(game_path, &argv[arg_index + 1]);
+    log_error("Failed to launch target game executable '%s': %s", game_path,
+              strerror(errno));
+    _exit(1);
+  } else if (pid < 0) {
+    log_error("Failed to fork process: %s", strerror(errno));
+  } else {
+    log_info("Game process started (pid=%d)", pid);
+    // Inside Parent Process: Manage splash screen lifecycle
+    int running = 1;
+    SDL_Event event;
+    bool hide_scheduled = false;
+    Uint32 hide_time = 0;
+
+    while (running) {
+      // Non-blocking check: Has the game quit?
+      int status;
+      pid_t result = waitpid(pid, &status, WNOHANG);
+      if (result > 0) {
+        if (WIFEXITED(status)) {
+          log_info("Game exited (code=%d)", WEXITSTATUS(status));
+        } else if (WIFSIGNALED(status)) {
+          log_info("Game terminated by signal %d", WTERMSIG(status));
+        } else {
+          log_info("Game exited");
+        }
+        break;  // Game closed, break the loop and close the script
+      } else if (result < 0) {
+        log_error("waitpid failed: %s", strerror(errno));
+        break;  // Process error safetynet
+      }
+
+      if (video_active && SDL_GetTicks() >= video_player.next_frame_tick) {
+        if (!decode_next_frame(&video_player)) {
+          // If decoding fails or loops, try again on next tick
+        }
+        video_player.next_frame_tick += (Uint32)video_player.frame_delay_ms;
+        Uint32 now = SDL_GetTicks();
+        if ((Sint32)(now - video_player.next_frame_tick) > 100) {
+          video_player.next_frame_tick = now;
+        }
 
-    if (!texture && !video_active)
-    {
-        log_error("Failed to load splash image '%s': %s; showing black screen", image_path, IMG_GetError());
-        // Fallback: Clear to solid black if image file is broken
-        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
         SDL_RenderClear(renderer);
-        SDL_RenderPresent(renderer);
-    }
-    else
-    {
         SDL_Rect dst_rect = {0, 0, 0, 0};
         int out_w = 0;
         int out_h = 0;
-
         SDL_GetRendererOutputSize(renderer, &out_w, &out_h);
+        compute_dest_rect(video_player.width, video_player.height, out_w, out_h,
+                          render_mode, &dst_rect);
+        SDL_RenderCopy(renderer, video_player.texture, NULL, &dst_rect);
+        SDL_RenderPresent(renderer);
+      }
 
-        if (video_active)
-        {
-            log_info("Video splash loaded");
-            compute_dest_rect(video_player.width, video_player.height, out_w, out_h, render_mode, &dst_rect);
-            decode_next_frame(&video_player);
-            SDL_RenderClear(renderer);
-            SDL_RenderCopy(renderer, video_player.texture, NULL, &dst_rect);
-            SDL_RenderPresent(renderer);
+      // Check desktop server window events
+      while (SDL_PollEvent(&event)) {
+        if (event.type == SDL_QUIT) {
+          log_info("Splash dismissed via window close");
+          running = 0;
         }
-        else if (texture)
-        {
-            int tex_w = 0;
-            int tex_h = 0;
-
-            log_info("Splash image loaded");
-            if (SDL_QueryTexture(texture, NULL, NULL, &tex_w, &tex_h) == 0)
-            {
-                compute_dest_rect(tex_w, tex_h, out_w, out_h, render_mode, &dst_rect);
+        if (event.type == SDL_WINDOWEVENT) {
+          // THE MOMENT THE GAME WINDOW STEALS FOCUS:
+          if (event.window.event == SDL_WINDOWEVENT_FOCUS_LOST &&
+              !hide_scheduled) {
+            Uint32 current_time = SDL_GetTicks();
+            if (current_time - launch_time <
+                (Uint32)(focus_ignore_seconds * 1000.0f)) {
+              log_info("Ignoring focus loss due to ignore limit");
+            } else {
+              log_info("Splash window hidden (focus lost), scheduling hide");
+              hide_scheduled = true;
+              hide_time =
+                  SDL_GetTicks() + 100;  // 100ms delay to prevent desktop flash
             }
-
+          }
+          // Re-render static image when compositor requests a redraw
+          if (event.window.event == SDL_WINDOWEVENT_EXPOSED && texture &&
+              !video_active) {
+            int out_w = 0, out_h = 0;
+            SDL_GetRendererOutputSize(renderer, &out_w, &out_h);
+            int tex_w = 0, tex_h = 0;
+            SDL_QueryTexture(texture, NULL, NULL, &tex_w, &tex_h);
+            SDL_Rect dst_rect = {0, 0, 0, 0};
+            compute_dest_rect(tex_w, tex_h, out_w, out_h, render_mode,
+                              &dst_rect);
             SDL_RenderClear(renderer);
             if (dst_rect.w > 0 && dst_rect.h > 0)
-            {
-                SDL_RenderCopy(renderer, texture, NULL, &dst_rect);
-            }
+              SDL_RenderCopy(renderer, texture, NULL, &dst_rect);
             else
-            {
-                SDL_RenderCopy(renderer, texture, NULL, NULL);
-            }
+              SDL_RenderCopy(renderer, texture, NULL, NULL);
             SDL_RenderPresent(renderer);
+          }
         }
-    }
-
-    // Fork the process to run the game
-    log_info("Launching game executable");
-    pid_t pid = fork();
-    if (pid == 0)
-    {
-        // Inside Child Process: Hand over execution directly to the game binary
-        log_info("Execing game: %s", game_path);
-        execvp(game_path, &argv[arg_index + 1]);
-        log_error("Failed to launch target game executable '%s': %s", game_path, strerror(errno));
-        _exit(1);
-    }
-    else if (pid < 0)
-    {
-        log_error("Failed to fork process: %s", strerror(errno));
-    }
-    else
-    {
-        log_info("Game process started (pid=%d)", pid);
-        // Inside Parent Process: Manage splash screen lifecycle
-        int running = 1;
-        SDL_Event event;
-        bool hide_scheduled = false;
-        Uint32 hide_time = 0;
-
-        while (running)
-        {
-            // Non-blocking check: Has the game quit?
-            int status;
-            pid_t result = waitpid(pid, &status, WNOHANG);
-            if (result > 0)
-            {
-                if (WIFEXITED(status))
-                {
-                    log_info("Game exited (code=%d)", WEXITSTATUS(status));
-                }
-                else if (WIFSIGNALED(status))
-                {
-                    log_info("Game terminated by signal %d", WTERMSIG(status));
-                }
-                else
-                {
-                    log_info("Game exited");
-                }
-                break; // Game closed, break the loop and close the script
-            }
-            else if (result < 0)
-            {
-                log_error("waitpid failed: %s", strerror(errno));
-                break; // Process error safetynet
-            }
-
-            if (video_active && SDL_GetTicks() >= video_player.next_frame_tick)
-            {
-                if (!decode_next_frame(&video_player))
-                {
-                    // If decoding fails or loops, try again on next tick
-                }
-                video_player.next_frame_tick += (Uint32)video_player.frame_delay_ms;
-                Uint32 now = SDL_GetTicks();
-                if ((Sint32)(now - video_player.next_frame_tick) > 100)
-                {
-                    video_player.next_frame_tick = now;
-                }
-
-                SDL_RenderClear(renderer);
-                SDL_Rect dst_rect = {0, 0, 0, 0};
-                int out_w = 0;
-                int out_h = 0;
-                SDL_GetRendererOutputSize(renderer, &out_w, &out_h);
-                compute_dest_rect(video_player.width, video_player.height, out_w, out_h, render_mode, &dst_rect);
-                SDL_RenderCopy(renderer, video_player.texture, NULL, &dst_rect);
-                SDL_RenderPresent(renderer);
-            }
-
-            // Check desktop server window events
-            while (SDL_PollEvent(&event))
-            {
-                if (event.type == SDL_QUIT)
-                {
-                    log_info("Splash dismissed via window close");
-                    running = 0;
-                }
-                if (event.type == SDL_WINDOWEVENT)
-                {
-                    // THE MOMENT THE GAME WINDOW STEALS FOCUS:
-                    if (event.window.event == SDL_WINDOWEVENT_FOCUS_LOST && !hide_scheduled)
-                    {
-                        log_info("Splash window hidden (focus lost), scheduling hide");
-                        hide_scheduled = true;
-                        hide_time = SDL_GetTicks() + 250; // 250ms delay to prevent desktop flash
-                    }
-                    // Re-render static image when compositor requests a redraw
-                    if (event.window.event == SDL_WINDOWEVENT_EXPOSED && texture && !video_active)
-                    {
-                        int out_w = 0, out_h = 0;
-                        SDL_GetRendererOutputSize(renderer, &out_w, &out_h);
-                        int tex_w = 0, tex_h = 0;
-                        SDL_QueryTexture(texture, NULL, NULL, &tex_w, &tex_h);
-                        SDL_Rect dst_rect = {0, 0, 0, 0};
-                        compute_dest_rect(tex_w, tex_h, out_w, out_h, render_mode, &dst_rect);
-                        SDL_RenderClear(renderer);
-                        if (dst_rect.w > 0 && dst_rect.h > 0)
-                            SDL_RenderCopy(renderer, texture, NULL, &dst_rect);
-                        else
-                            SDL_RenderCopy(renderer, texture, NULL, NULL);
-                        SDL_RenderPresent(renderer);
-                    }
-                }
-                if (event.type == SDL_KEYDOWN)
-                {
-                    if (event.key.keysym.sym == SDLK_ESCAPE)
-                    {
-                        log_info("Splash dismissed via escape key");
-                        running = 0; // Emergency escape key loop override
-                    }
-                }
-            }
-
-            if (hide_scheduled && SDL_GetTicks() >= hide_time)
-            {
-                log_info("Hiding splash window (delayed)");
-                SDL_HideWindow(window);
-                hide_scheduled = false;
-            }
-
-            if (video_active)
-            {
-                Uint32 now = SDL_GetTicks();
-                if ((Sint32)(video_player.next_frame_tick - now) > 0)
-                {
-                    Uint32 delay = video_player.next_frame_tick - now;
-                    SDL_Delay(delay > 33 ? 33 : delay);
-                }
-            }
-            else
-            {
-                SDL_Delay(33); // ~30 FPS polling loop to ensure near-zero CPU usage
-            }
+        if (event.type == SDL_KEYDOWN) {
+          if (event.key.keysym.sym == SDLK_ESCAPE) {
+            log_info("Splash dismissed via escape key");
+            running = 0;  // Emergency escape key loop override
+          }
         }
-    }
+      }
 
-    // Clean up memory space
-    if (texture)
-        SDL_DestroyTexture(texture);
-    if (video_active)
-        cleanup_video_player(&video_player);
-    SDL_DestroyRenderer(renderer);
-    SDL_DestroyWindow(window);
-    IMG_Quit();
-    SDL_Quit();
-    log_info("Splash shutdown complete");
-    return 0;
+      if (hide_scheduled && SDL_GetTicks() >= hide_time) {
+        log_info("Hiding splash window (delayed)");
+        SDL_HideWindow(window);
+        hide_scheduled = false;
+      }
+
+      if (video_active) {
+        Uint32 now = SDL_GetTicks();
+        if ((Sint32)(video_player.next_frame_tick - now) > 0) {
+          Uint32 delay = video_player.next_frame_tick - now;
+          SDL_Delay(delay > 33 ? 33 : delay);
+        }
+      } else {
+        SDL_Delay(33);  // ~30 FPS polling loop to ensure near-zero CPU usage
+      }
+    }
+  }
+
+  // Clean up memory space
+  if (texture) SDL_DestroyTexture(texture);
+  if (video_active) cleanup_video_player(&video_player);
+  SDL_DestroyRenderer(renderer);
+  SDL_DestroyWindow(window);
+  IMG_Quit();
+  SDL_Quit();
+  log_info("Splash shutdown complete");
+  return 0;
 }

src/video.c

@@ -1,205 +1,197 @@
 #include "video.h"
-#include <string.h>
+
 #include <ctype.h>
+#include <string.h>
 
-bool has_video_extension(const char *path)
-{
-    const char *dot = strrchr(path, '.');
-    if (!dot || dot == path)
-    {
-        return false;
-    }
+bool has_video_extension(const char* path) {
+  /*
+  Check if the file extension of the given path matches common video formats.
+  */
 
-    char ext[8];
-    size_t i = 0;
-    dot++;
-    while (*dot && i < sizeof(ext) - 1)
-    {
-        ext[i++] = (char)tolower((unsigned char)*dot++);
-    }
-    ext[i] = '\0';
+  // TODO: Instead of checking file extension, use MIME type detection
 
-    return strcmp(ext, "mp4") == 0 || strcmp(ext, "mkv") == 0 || strcmp(ext, "webm") == 0 ||
-           strcmp(ext, "avi") == 0 || strcmp(ext, "mov") == 0 || strcmp(ext, "mpg") == 0 ||
-           strcmp(ext, "mpeg") == 0;
-}
-
-bool init_video_player(VideoPlayer *player, SDL_Renderer *renderer, const char *path)
-{
-    memset(player, 0, sizeof(*player));
-
-    if (avformat_open_input(&player->format_ctx, path, NULL, NULL) != 0)
-    {
-        return false;
-    }
-
-    if (avformat_find_stream_info(player->format_ctx, NULL) < 0)
-    {
-        return false;
-    }
-
-    player->stream_index = -1;
-    for (unsigned int i = 0; i < player->format_ctx->nb_streams; ++i)
-    {
-        if (player->format_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
-        {
-            player->stream_index = (int)i;
-            break;
-        }
-    }
-
-    if (player->stream_index < 0)
-    {
-        return false;
-    }
-
-    AVCodecParameters *codecpar = player->format_ctx->streams[player->stream_index]->codecpar;
-    const AVCodec *decoder = avcodec_find_decoder(codecpar->codec_id);
-    if (!decoder)
-    {
-        return false;
-    }
-
-    player->codec_ctx = avcodec_alloc_context3(decoder);
-    if (!player->codec_ctx)
-    {
-        return false;
-    }
-
-    if (avcodec_parameters_to_context(player->codec_ctx, codecpar) < 0)
-    {
-        return false;
-    }
-
-    if (avcodec_open2(player->codec_ctx, decoder, NULL) < 0)
-    {
-        return false;
-    }
-
-    player->width = player->codec_ctx->width;
-    player->height = player->codec_ctx->height;
-    player->frame = av_frame_alloc();
-    player->rgba_frame = av_frame_alloc();
-    if (!player->frame || !player->rgba_frame)
-    {
-        return false;
-    }
-
-    player->rgba_buffer_size = av_image_get_buffer_size(AV_PIX_FMT_RGBA, player->width, player->height, 1);
-    player->rgba_buffer = (uint8_t *)av_malloc(player->rgba_buffer_size);
-    if (!player->rgba_buffer)
-    {
-        return false;
-    }
-
-    av_image_fill_arrays(player->rgba_frame->data, player->rgba_frame->linesize, player->rgba_buffer,
-                         AV_PIX_FMT_RGBA, player->width, player->height, 1);
-
-    player->sws_ctx = sws_getContext(player->width, player->height, player->codec_ctx->pix_fmt,
-                                     player->width, player->height, AV_PIX_FMT_RGBA, SWS_BILINEAR,
-                                     NULL, NULL, NULL);
-    if (!player->sws_ctx)
-    {
-        return false;
-    }
-
-    player->texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA32,
-                                        SDL_TEXTUREACCESS_STREAMING, player->width, player->height);
-    if (!player->texture)
-    {
-        return false;
-    }
-
-    AVRational fr = player->format_ctx->streams[player->stream_index]->avg_frame_rate;
-    if (fr.num > 0 && fr.den > 0)
-    {
-        player->frame_delay_ms = (int)(1000.0 * fr.den / fr.num);
-    }
-    else
-    {
-        player->frame_delay_ms = 33;
-    }
-
-    player->next_frame_tick = SDL_GetTicks();
-    return true;
-}
-
-void cleanup_video_player(VideoPlayer *player)
-{
-    if (player->texture)
-    {
-        SDL_DestroyTexture(player->texture);
-    }
-    if (player->sws_ctx)
-    {
-        sws_freeContext(player->sws_ctx);
-    }
-    if (player->rgba_buffer)
-    {
-        av_free(player->rgba_buffer);
-    }
-    if (player->rgba_frame)
-    {
-        av_frame_free(&player->rgba_frame);
-    }
-    if (player->frame)
-    {
-        av_frame_free(&player->frame);
-    }
-    if (player->codec_ctx)
-    {
-        avcodec_free_context(&player->codec_ctx);
-    }
-    if (player->format_ctx)
-    {
-        avformat_close_input(&player->format_ctx);
-    }
-    memset(player, 0, sizeof(*player));
-}
-
-bool decode_next_frame(VideoPlayer *player)
-{
-    AVPacket packet;
-    av_init_packet(&packet);
-
-    while (av_read_frame(player->format_ctx, &packet) >= 0)
-    {
-        if (packet.stream_index != player->stream_index)
-        {
-            av_packet_unref(&packet);
-            continue;
-        }
-
-        if (avcodec_send_packet(player->codec_ctx, &packet) < 0)
-        {
-            av_packet_unref(&packet);
-            continue;
-        }
-        av_packet_unref(&packet);
-
-        while (true)
-        {
-            int ret = avcodec_receive_frame(player->codec_ctx, player->frame);
-            if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
-            {
-                break;
-            }
-            if (ret < 0)
-            {
-                return false;
-            }
-
-            sws_scale(player->sws_ctx, (const uint8_t *const *)player->frame->data,
-                      player->frame->linesize, 0, player->height,
-                      player->rgba_frame->data, player->rgba_frame->linesize);
-
-            SDL_UpdateTexture(player->texture, NULL, player->rgba_frame->data[0],
-                              player->rgba_frame->linesize[0]);
-            return true;
-        }
-    }
-
-    av_seek_frame(player->format_ctx, player->stream_index, 0, AVSEEK_FLAG_BACKWARD);
-    avcodec_flush_buffers(player->codec_ctx);
+  // Check if the given path has an extension by looking for the last dot
+  // character.
+  const char* dot = strrchr(path, '.');
+  if (!dot || dot == path) {
     return false;
+  }
+
+  char ext[8];
+  size_t i = 0;
+  dot++;
+  while (*dot && i < sizeof(ext) - 1) {
+    ext[i++] = (char)tolower((unsigned char)*dot++);
+  }
+  ext[i] = '\0';
+
+  return strcmp(ext, "mp4") == 0 || strcmp(ext, "mkv") == 0 ||
+         strcmp(ext, "webm") == 0 || strcmp(ext, "avi") == 0 ||
+         strcmp(ext, "mov") == 0 || strcmp(ext, "mpg") == 0 ||
+         strcmp(ext, "mpeg") == 0;
+}
+
+bool init_video_player(VideoPlayer* player, SDL_Renderer* renderer,
+                       const char* path) {
+  memset(player, 0, sizeof(*player));
+
+  if (avformat_open_input(&player->format_ctx, path, NULL, NULL) != 0) {
+    goto error;
+  }
+
+  if (avformat_find_stream_info(player->format_ctx, NULL) < 0) {
+    goto error;
+  }
+
+  player->stream_index = -1;
+  for (unsigned int i = 0; i < player->format_ctx->nb_streams; ++i) {
+    if (player->format_ctx->streams[i]->codecpar->codec_type ==
+        AVMEDIA_TYPE_VIDEO) {
+      player->stream_index = (int)i;
+      break;
+    }
+  }
+
+  if (player->stream_index < 0) {
+    goto error;
+  }
+
+  AVCodecParameters* codecpar =
+      player->format_ctx->streams[player->stream_index]->codecpar;
+  const AVCodec* decoder = avcodec_find_decoder(codecpar->codec_id);
+  if (!decoder) {
+    goto error;
+  }
+
+  player->codec_ctx = avcodec_alloc_context3(decoder);
+  if (!player->codec_ctx) {
+    goto error;
+  }
+
+  if (avcodec_parameters_to_context(player->codec_ctx, codecpar) < 0) {
+    goto error;
+  }
+
+  if (avcodec_open2(player->codec_ctx, decoder, NULL) < 0) {
+    goto error;
+  }
+
+  player->width = player->codec_ctx->width;
+  player->height = player->codec_ctx->height;
+  player->frame = av_frame_alloc();
+  player->rgba_frame = av_frame_alloc();
+  if (!player->frame || !player->rgba_frame) {
+    goto error;
+  }
+
+  player->rgba_buffer_size = av_image_get_buffer_size(
+      AV_PIX_FMT_RGBA, player->width, player->height, 1);
+  player->rgba_buffer = (uint8_t*)av_malloc(player->rgba_buffer_size);
+  if (!player->rgba_buffer) {
+    goto error;
+  }
+
+  av_image_fill_arrays(player->rgba_frame->data, player->rgba_frame->linesize,
+                       player->rgba_buffer, AV_PIX_FMT_RGBA, player->width,
+                       player->height, 1);
+
+  player->sws_ctx = sws_getContext(
+      player->width, player->height, player->codec_ctx->pix_fmt, player->width,
+      player->height, AV_PIX_FMT_RGBA, SWS_BILINEAR, NULL, NULL, NULL);
+  if (!player->sws_ctx) {
+    goto error;
+  }
+
+  player->texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA32,
+                                      SDL_TEXTUREACCESS_STREAMING,
+                                      player->width, player->height);
+  if (!player->texture) {
+    goto error;
+  }
+
+  AVRational fr =
+      player->format_ctx->streams[player->stream_index]->avg_frame_rate;
+  if (fr.num > 0 && fr.den > 0) {
+    player->frame_delay_ms = (int)(1000.0 * fr.den / fr.num);
+  } else {
+    player->frame_delay_ms = 33;
+  }
+
+  player->next_frame_tick = SDL_GetTicks();
+  return true;
+
+error:
+  cleanup_video_player(player);
+  return false;
+}
+
+void cleanup_video_player(VideoPlayer* player) {
+  if (player->texture) {
+    SDL_DestroyTexture(player->texture);
+  }
+  if (player->sws_ctx) {
+    sws_freeContext(player->sws_ctx);
+  }
+  if (player->rgba_buffer) {
+    av_free(player->rgba_buffer);
+  }
+  if (player->rgba_frame) {
+    av_frame_free(&player->rgba_frame);
+  }
+  if (player->frame) {
+    av_frame_free(&player->frame);
+  }
+  if (player->codec_ctx) {
+    avcodec_free_context(&player->codec_ctx);
+  }
+  if (player->format_ctx) {
+    avformat_close_input(&player->format_ctx);
+  }
+  memset(player, 0, sizeof(*player));
+}
+
+bool decode_next_frame(VideoPlayer* player) {
+  AVPacket* packet = av_packet_alloc();
+  if (!packet) {
+    return false;
+  }
+
+  while (av_read_frame(player->format_ctx, packet) >= 0) {
+    if (packet->stream_index != player->stream_index) {
+      av_packet_unref(packet);
+      continue;
+    }
+
+    if (avcodec_send_packet(player->codec_ctx, packet) < 0) {
+      av_packet_unref(packet);
+      continue;
+    }
+    av_packet_unref(packet);
+
+    while (true) {
+      int ret = avcodec_receive_frame(player->codec_ctx, player->frame);
+      if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
+        break;
+      }
+      if (ret < 0) {
+        av_packet_free(&packet);
+        return false;
+      }
+
+      sws_scale(player->sws_ctx, (const uint8_t* const*)player->frame->data,
+                player->frame->linesize, 0, player->height,
+                player->rgba_frame->data, player->rgba_frame->linesize);
+
+      SDL_UpdateTexture(player->texture, NULL, player->rgba_frame->data[0],
+                        player->rgba_frame->linesize[0]);
+      av_packet_free(&packet);
+      return true;
+    }
+  }
+
+  av_seek_frame(player->format_ctx, player->stream_index, 0,
+                AVSEEK_FLAG_BACKWARD);
+  avcodec_flush_buffers(player->codec_ctx);
+  av_packet_free(&packet);
+  return false;
 }

src/video.h

@@ -2,33 +2,32 @@
 #define VIDEO_H
 
 #include <SDL2/SDL.h>
-#include <stdbool.h>
-
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
-#include <libswscale/swscale.h>
 #include <libavutil/imgutils.h>
+#include <libswscale/swscale.h>
+#include <stdbool.h>
 
-typedef struct VideoPlayer
-{
-    AVFormatContext *format_ctx;
-    AVCodecContext *codec_ctx;
-    struct SwsContext *sws_ctx;
-    AVFrame *frame;
-    AVFrame *rgba_frame;
-    uint8_t *rgba_buffer;
-    int rgba_buffer_size;
-    int stream_index;
-    int width;
-    int height;
-    int frame_delay_ms;
-    Uint32 next_frame_tick;
-    SDL_Texture *texture;
+typedef struct VideoPlayer {
+  AVFormatContext* format_ctx;
+  AVCodecContext* codec_ctx;
+  struct SwsContext* sws_ctx;
+  AVFrame* frame;
+  AVFrame* rgba_frame;
+  uint8_t* rgba_buffer;
+  int rgba_buffer_size;
+  int stream_index;
+  int width;
+  int height;
+  int frame_delay_ms;
+  Uint32 next_frame_tick;
+  SDL_Texture* texture;
 } VideoPlayer;
 
-bool has_video_extension(const char *path);
-bool init_video_player(VideoPlayer *player, SDL_Renderer *renderer, const char *path);
-void cleanup_video_player(VideoPlayer *player);
-bool decode_next_frame(VideoPlayer *player);
+bool has_video_extension(const char* path);
+bool init_video_player(VideoPlayer* player, SDL_Renderer* renderer,
+                       const char* path);
+void cleanup_video_player(VideoPlayer* player);
+bool decode_next_frame(VideoPlayer* player);
 
-#endif // VIDEO_H
+#endif  // VIDEO_H