Initial commit: Immich client PoC for PS Vita

Scrollable chronological photo grid with full-screen viewer, fetching
previews from an Immich server via its REST API. Thumbnails stream in
on a background thread over a keep-alive connection. JPEG decoding is
done with libjpeg directly (vita2d's loader rejects Immich's
APP2-first JPEGs). JSON parsed with vendored jsmn (the vitasdk jansson
package is built as PIC, which vita-elf-create can't handle).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1 @@
+build/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+
+if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+  if(DEFINED ENV{VITASDK})
+    set(CMAKE_TOOLCHAIN_FILE "$ENV{VITASDK}/share/vita.toolchain.cmake" CACHE PATH "toolchain file")
+  else()
+    message(FATAL_ERROR "Please define VITASDK to point to your SDK path!")
+  endif()
+endif()
+
+project(vitaImmich C)
+include("${VITASDK}/share/vita.cmake" REQUIRED)
+
+set(VITA_APP_NAME "Vita Immich")
+set(VITA_TITLEID  "VIMM00001")
+set(VITA_VERSION  "01.00")
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -O2")
+
+add_executable(${PROJECT_NAME}
+  src/main.c
+)
+
+target_link_libraries(${PROJECT_NAME}
+  vita2d
+  curl
+  ssl
+  crypto
+  zstd
+  freetype
+  png
+  jpeg
+  z
+  m
+  SceDisplay_stub
+  SceGxm_stub
+  SceSysmodule_stub
+  SceCtrl_stub
+  SceCommonDialog_stub
+  ScePgf_stub
+  SceAppMgr_stub
+  SceNet_stub
+  SceNetCtl_stub
+)
+
+vita_create_self(${PROJECT_NAME}.self ${PROJECT_NAME})
+vita_create_vpk(${PROJECT_NAME}.vpk ${VITA_TITLEID} ${PROJECT_NAME}.self
+  VERSION ${VITA_VERSION}
+  NAME ${VITA_APP_NAME}
+)

README.md

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+# vitaImmich
+
+Minimal proof-of-concept [Immich](https://immich.app/) client for the PS Vita.
+It connects to your Immich server and shows your photo library as a scrollable
+chronological grid (newest first), with a full-screen viewer.
+
+## Requirements
+
+- A PS Vita with HENkaku/h-encore and VitaShell
+- An Immich server reachable from the Vita's Wi-Fi (recent Immich version —
+  it uses `POST /api/search/random` and `GET /api/assets/{id}/thumbnail`)
+- An Immich API key (web UI → Account Settings → API Keys)
+
+## Building
+
+Needs [VitaSDK](https://vitasdk.org/) with the `libvita2d`, `curl`, `openssl`,
+`zstd`, `zlib`, `libpng`, `libjpeg-turbo` and `freetype` packages installed
+(via `vdpm`).
+
+```sh
+export VITASDK=$HOME/vitasdk
+export PATH=$VITASDK/bin:$PATH
+cmake -B build -S .
+cmake --build build
+```
+
+This produces `build/vitaImmich.vpk`.
+
+## Installing & configuring
+
+1. Copy `vitaImmich.vpk` to the Vita and install it with VitaShell.
+2. Launch it once — it creates `ux0:data/vitaimmich/config.txt`.
+3. Edit that file (VitaShell → SELECT for FTP makes this easy):
+
+   ```
+   server=http://192.168.1.100:2283
+   apikey=your-immich-api-key
+   ```
+
+4. Relaunch the app.
+
+## Controls
+
+Grid view:
+
+| Button        | Action                          |
+| ------------- | ------------------------------- |
+| D-pad         | Move selection (hold to repeat) |
+| L / R         | Jump two rows up / down         |
+| X             | Open photo full screen          |
+| START         | Exit                            |
+
+Full-screen view:
+
+| Button        | Action                  |
+| ------------- | ----------------------- |
+| Left / Right  | Previous / next photo   |
+| X             | Retry a failed photo    |
+| O             | Back to grid            |
+| START         | Exit                    |
+
+More of the library is fetched automatically (100 photos at a time, newest
+first) as you scroll toward the end. Errors are shown on screen and logged
+to `ux0:data/vitaimmich/log.txt`.
+
+## PoC limitations
+
+- TLS certificate verification is disabled (no CA bundle is shipped), so
+  prefer plain HTTP on a trusted LAN or treat HTTPS as unverified.
+- Thumbnails stream in on a background thread (one at a time over a
+  keep-alive connection); cells show a grey placeholder until loaded.
+- Caps at 1000 photos per launch; no albums, search, video or upload.

src/jsmn.h

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+/*
+ * MIT License
+ *
+ * Copyright (c) 2010 Serge Zaitsev
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef JSMN_H
+#define JSMN_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef JSMN_STATIC
+#define JSMN_API static
+#else
+#define JSMN_API extern
+#endif
+
+/**
+ * JSON type identifier. Basic types are:
+ * 	o Object
+ * 	o Array
+ * 	o String
+ * 	o Other primitive: number, boolean (true/false) or null
+ */
+typedef enum {
+  JSMN_UNDEFINED = 0,
+  JSMN_OBJECT = 1 << 0,
+  JSMN_ARRAY = 1 << 1,
+  JSMN_STRING = 1 << 2,
+  JSMN_PRIMITIVE = 1 << 3
+} jsmntype_t;
+
+enum jsmnerr {
+  /* Not enough tokens were provided */
+  JSMN_ERROR_NOMEM = -1,
+  /* Invalid character inside JSON string */
+  JSMN_ERROR_INVAL = -2,
+  /* The string is not a full JSON packet, more bytes expected */
+  JSMN_ERROR_PART = -3
+};
+
+/**
+ * JSON token description.
+ * type		type (object, array, string etc.)
+ * start	start position in JSON data string
+ * end		end position in JSON data string
+ */
+typedef struct jsmntok {
+  jsmntype_t type;
+  int start;
+  int end;
+  int size;
+#ifdef JSMN_PARENT_LINKS
+  int parent;
+#endif
+} jsmntok_t;
+
+/**
+ * JSON parser. Contains an array of token blocks available. Also stores
+ * the string being parsed now and current position in that string.
+ */
+typedef struct jsmn_parser {
+  unsigned int pos;     /* offset in the JSON string */
+  unsigned int toknext; /* next token to allocate */
+  int toksuper;         /* superior token node, e.g. parent object or array */
+} jsmn_parser;
+
+/**
+ * Create JSON parser over an array of tokens
+ */
+JSMN_API void jsmn_init(jsmn_parser *parser);
+
+/**
+ * Run JSON parser. It parses a JSON data string into and array of tokens, each
+ * describing
+ * a single JSON object.
+ */
+JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
+                        jsmntok_t *tokens, const unsigned int num_tokens);
+
+#ifndef JSMN_HEADER
+/**
+ * Allocates a fresh unused token from the token pool.
+ */
+static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser, jsmntok_t *tokens,
+                                   const size_t num_tokens) {
+  jsmntok_t *tok;
+  if (parser->toknext >= num_tokens) {
+    return NULL;
+  }
+  tok = &tokens[parser->toknext++];
+  tok->start = tok->end = -1;
+  tok->size = 0;
+#ifdef JSMN_PARENT_LINKS
+  tok->parent = -1;
+#endif
+  return tok;
+}
+
+/**
+ * Fills token type and boundaries.
+ */
+static void jsmn_fill_token(jsmntok_t *token, const jsmntype_t type,
+                            const int start, const int end) {
+  token->type = type;
+  token->start = start;
+  token->end = end;
+  token->size = 0;
+}
+
+/**
+ * Fills next available token with JSON primitive.
+ */
+static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
+                                const size_t len, jsmntok_t *tokens,
+                                const size_t num_tokens) {
+  jsmntok_t *token;
+  int start;
+
+  start = parser->pos;
+
+  for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+    switch (js[parser->pos]) {
+#ifndef JSMN_STRICT
+    /* In strict mode primitive must be followed by "," or "}" or "]" */
+    case ':':
+#endif
+    case '\t':
+    case '\r':
+    case '\n':
+    case ' ':
+    case ',':
+    case ']':
+    case '}':
+      goto found;
+    default:
+                   /* to quiet a warning from gcc*/
+      break;
+    }
+    if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
+      parser->pos = start;
+      return JSMN_ERROR_INVAL;
+    }
+  }
+#ifdef JSMN_STRICT
+  /* In strict mode primitive must be followed by a comma/object/array */
+  parser->pos = start;
+  return JSMN_ERROR_PART;
+#endif
+
+found:
+  if (tokens == NULL) {
+    parser->pos--;
+    return 0;
+  }
+  token = jsmn_alloc_token(parser, tokens, num_tokens);
+  if (token == NULL) {
+    parser->pos = start;
+    return JSMN_ERROR_NOMEM;
+  }
+  jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+  token->parent = parser->toksuper;
+#endif
+  parser->pos--;
+  return 0;
+}
+
+/**
+ * Fills next token with JSON string.
+ */
+static int jsmn_parse_string(jsmn_parser *parser, const char *js,
+                             const size_t len, jsmntok_t *tokens,
+                             const size_t num_tokens) {
+  jsmntok_t *token;
+
+  int start = parser->pos;
+  
+  /* Skip starting quote */
+  parser->pos++;
+  
+  for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+    char c = js[parser->pos];
+
+    /* Quote: end of string */
+    if (c == '\"') {
+      if (tokens == NULL) {
+        return 0;
+      }
+      token = jsmn_alloc_token(parser, tokens, num_tokens);
+      if (token == NULL) {
+        parser->pos = start;
+        return JSMN_ERROR_NOMEM;
+      }
+      jsmn_fill_token(token, JSMN_STRING, start + 1, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+      token->parent = parser->toksuper;
+#endif
+      return 0;
+    }
+
+    /* Backslash: Quoted symbol expected */
+    if (c == '\\' && parser->pos + 1 < len) {
+      int i;
+      parser->pos++;
+      switch (js[parser->pos]) {
+      /* Allowed escaped symbols */
+      case '\"':
+      case '/':
+      case '\\':
+      case 'b':
+      case 'f':
+      case 'r':
+      case 'n':
+      case 't':
+        break;
+      /* Allows escaped symbol \uXXXX */
+      case 'u':
+        parser->pos++;
+        for (i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0';
+             i++) {
+          /* If it isn't a hex character we have an error */
+          if (!((js[parser->pos] >= 48 && js[parser->pos] <= 57) ||   /* 0-9 */
+                (js[parser->pos] >= 65 && js[parser->pos] <= 70) ||   /* A-F */
+                (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
+            parser->pos = start;
+            return JSMN_ERROR_INVAL;
+          }
+          parser->pos++;
+        }
+        parser->pos--;
+        break;
+      /* Unexpected symbol */
+      default:
+        parser->pos = start;
+        return JSMN_ERROR_INVAL;
+      }
+    }
+  }
+  parser->pos = start;
+  return JSMN_ERROR_PART;
+}
+
+/**
+ * Parse JSON string and fill tokens.
+ */
+JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
+                        jsmntok_t *tokens, const unsigned int num_tokens) {
+  int r;
+  int i;
+  jsmntok_t *token;
+  int count = parser->toknext;
+
+  for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
+    char c;
+    jsmntype_t type;
+
+    c = js[parser->pos];
+    switch (c) {
+    case '{':
+    case '[':
+      count++;
+      if (tokens == NULL) {
+        break;
+      }
+      token = jsmn_alloc_token(parser, tokens, num_tokens);
+      if (token == NULL) {
+        return JSMN_ERROR_NOMEM;
+      }
+      if (parser->toksuper != -1) {
+        jsmntok_t *t = &tokens[parser->toksuper];
+#ifdef JSMN_STRICT
+        /* In strict mode an object or array can't become a key */
+        if (t->type == JSMN_OBJECT) {
+          return JSMN_ERROR_INVAL;
+        }
+#endif
+        t->size++;
+#ifdef JSMN_PARENT_LINKS
+        token->parent = parser->toksuper;
+#endif
+      }
+      token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+      token->start = parser->pos;
+      parser->toksuper = parser->toknext - 1;
+      break;
+    case '}':
+    case ']':
+      if (tokens == NULL) {
+        break;
+      }
+      type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+#ifdef JSMN_PARENT_LINKS
+      if (parser->toknext < 1) {
+        return JSMN_ERROR_INVAL;
+      }
+      token = &tokens[parser->toknext - 1];
+      for (;;) {
+        if (token->start != -1 && token->end == -1) {
+          if (token->type != type) {
+            return JSMN_ERROR_INVAL;
+          }
+          token->end = parser->pos + 1;
+          parser->toksuper = token->parent;
+          break;
+        }
+        if (token->parent == -1) {
+          if (token->type != type || parser->toksuper == -1) {
+            return JSMN_ERROR_INVAL;
+          }
+          break;
+        }
+        token = &tokens[token->parent];
+      }
+#else
+      for (i = parser->toknext - 1; i >= 0; i--) {
+        token = &tokens[i];
+        if (token->start != -1 && token->end == -1) {
+          if (token->type != type) {
+            return JSMN_ERROR_INVAL;
+          }
+          parser->toksuper = -1;
+          token->end = parser->pos + 1;
+          break;
+        }
+      }
+      /* Error if unmatched closing bracket */
+      if (i == -1) {
+        return JSMN_ERROR_INVAL;
+      }
+      for (; i >= 0; i--) {
+        token = &tokens[i];
+        if (token->start != -1 && token->end == -1) {
+          parser->toksuper = i;
+          break;
+        }
+      }
+#endif
+      break;
+    case '\"':
+      r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
+      if (r < 0) {
+        return r;
+      }
+      count++;
+      if (parser->toksuper != -1 && tokens != NULL) {
+        tokens[parser->toksuper].size++;
+      }
+      break;
+    case '\t':
+    case '\r':
+    case '\n':
+    case ' ':
+      break;
+    case ':':
+      parser->toksuper = parser->toknext - 1;
+      break;
+    case ',':
+      if (tokens != NULL && parser->toksuper != -1 &&
+          tokens[parser->toksuper].type != JSMN_ARRAY &&
+          tokens[parser->toksuper].type != JSMN_OBJECT) {
+#ifdef JSMN_PARENT_LINKS
+        parser->toksuper = tokens[parser->toksuper].parent;
+#else
+        for (i = parser->toknext - 1; i >= 0; i--) {
+          if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
+            if (tokens[i].start != -1 && tokens[i].end == -1) {
+              parser->toksuper = i;
+              break;
+            }
+          }
+        }
+#endif
+      }
+      break;
+#ifdef JSMN_STRICT
+    /* In strict mode primitives are: numbers and booleans */
+    case '-':
+    case '0':
+    case '1':
+    case '2':
+    case '3':
+    case '4':
+    case '5':
+    case '6':
+    case '7':
+    case '8':
+    case '9':
+    case 't':
+    case 'f':
+    case 'n':
+      /* And they must not be keys of the object */
+      if (tokens != NULL && parser->toksuper != -1) {
+        const jsmntok_t *t = &tokens[parser->toksuper];
+        if (t->type == JSMN_OBJECT ||
+            (t->type == JSMN_STRING && t->size != 0)) {
+          return JSMN_ERROR_INVAL;
+        }
+      }
+#else
+    /* In non-strict mode every unquoted value is a primitive */
+    default:
+#endif
+      r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
+      if (r < 0) {
+        return r;
+      }
+      count++;
+      if (parser->toksuper != -1 && tokens != NULL) {
+        tokens[parser->toksuper].size++;
+      }
+      break;
+
+#ifdef JSMN_STRICT
+    /* Unexpected char in strict mode */
+    default:
+      return JSMN_ERROR_INVAL;
+#endif
+    }
+  }
+
+  if (tokens != NULL) {
+    for (i = parser->toknext - 1; i >= 0; i--) {
+      /* Unmatched opened object or array */
+      if (tokens[i].start != -1 && tokens[i].end == -1) {
+        return JSMN_ERROR_PART;
+      }
+    }
+  }
+
+  return count;
+}
+
+/**
+ * Creates a new parser based over a given buffer with an array of tokens
+ * available.
+ */
+JSMN_API void jsmn_init(jsmn_parser *parser) {
+  parser->pos = 0;
+  parser->toknext = 0;
+  parser->toksuper = -1;
+}
+
+#endif /* JSMN_HEADER */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* JSMN_H */