From 6da5bd35a9e10c1229a213894795ec841936eee1 Mon Sep 17 00:00:00 2001
From: Cedric BAIL <cedric.bail@free.fr>
Date: Mon, 22 Jul 2019 10:27:10 +0200
Subject: [PATCH] ecore_evas_convert: add the ability to split large jpeg file.

Summary:
After trying convert to split very large image and running out of
memory, this few line of code did seems like the best solution. Maybe
there is some benefit to try to make Ecore_Evas_Convert more useful.

Reviewers: zmike, raster, segfaultxavi

Reviewed By: segfaultxavi

Subscribers: #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D9337
---
 src/bin/ecore_evas/ecore_evas_convert.c | 60 +++++++++++++++++++++++--
 1 file changed, 57 insertions(+), 3 deletions(-)

diff --git a/src/bin/ecore_evas/ecore_evas_convert.c b/src/bin/ecore_evas/ecore_evas_convert.c
index 019e42c7ff..2cddad1052 100644
--- a/src/bin/ecore_evas/ecore_evas_convert.c
+++ b/src/bin/ecore_evas/ecore_evas_convert.c
@@ -30,6 +30,7 @@ const Ecore_Getopt optdesc = {
     ECORE_GETOPT_STORE_INT('q', "quality", "define encoding quality in percent."),
     ECORE_GETOPT_STORE_TRUE('c', "compress", "define if data should be compressed."),
     ECORE_GETOPT_STORE_STR('e', "encoding", "define the codec (for TGV files: 'etc1', 'etc2', 'etc1+alpha')"),
+    ECORE_GETOPT_STORE_STR('m', "max-geometry", "define the max size in pixels (WidthxHeight) of any converted image, splitting the image as necessary in a grid pattern ('_XxY' will be appended to the file name)"),
     ECORE_GETOPT_LICENSE('L', "license"),
     ECORE_GETOPT_COPYRIGHT('C', "copyright"),
     ECORE_GETOPT_VERSION('V', "version"),
@@ -40,24 +41,50 @@ const Ecore_Getopt optdesc = {
 
 typedef struct _Save_Job {
    const char *output;
+   const char *extension;
    const char *flags;
    Evas_Object *im;
    int ret;
 } Save_Job;
 
-static Save_Job job = { NULL, NULL, NULL, -1 };
+static Save_Job job = { NULL, NULL, NULL, NULL, -1 };
+static unsigned int width = 0, height = 0;
+static unsigned int x = 0, y = 0;
+static int image_w, image_h;
 
 static void
 _save_do(void *data EINA_UNUSED)
 {
+   const char *output = job.output;
+
    job.ret = 0;
-   if (!evas_object_image_save(job.im, job.output, NULL, job.flags))
+   if (width || height)
+     {
+        Eina_Slstr *str;
+
+        str = eina_slstr_printf("%s_%ux%u.%s", output, x / width, y / height, job.extension);
+        output = str;
+
+        evas_object_image_load_region_set(job.im, x, y, width, height);
+        x += width;
+
+        if ((int)x > image_w)
+          {
+             y += height;
+             x = 0;
+          }
+
+     }
+
+   fprintf(stderr, "Saving image '%s'\n", output);
+   if (!evas_object_image_save(job.im, output, NULL, job.flags))
      {
         EINA_LOG_ERR("Could not convert file to '%s'.", job.output);
         job.ret = 1;
      }
 
-   ecore_main_loop_quit();
+   if (!width || ((int)y > image_h)) ecore_main_loop_quit();
+   else ecore_job_add(_save_do, NULL);
 }
 
 #ifndef NO_SIGNAL
@@ -81,6 +108,7 @@ main(int argc, char *argv[])
    int quality = -1;
    int r = -1;
    char *encoding = NULL;
+   char *maxgeometry = NULL;
    Eina_Bool compress = 1;
    Eina_Bool quit_option = EINA_FALSE;
    Eina_Strbuf *flags = NULL;
@@ -89,6 +117,7 @@ main(int argc, char *argv[])
      ECORE_GETOPT_VALUE_INT(quality),
      ECORE_GETOPT_VALUE_BOOL(compress),
      ECORE_GETOPT_VALUE_STR(encoding),
+     ECORE_GETOPT_VALUE_STR(maxgeometry),
      ECORE_GETOPT_VALUE_BOOL(quit_option),
      ECORE_GETOPT_VALUE_BOOL(quit_option),
      ECORE_GETOPT_VALUE_BOOL(quit_option),
@@ -116,6 +145,20 @@ main(int argc, char *argv[])
         goto end;
      }
 
+   if (maxgeometry)
+     {
+        if (sscanf(maxgeometry, "%ux%u", &width, &height) != 2)
+          {
+             EINA_LOG_ERR("max-geometry should be specified as WidthxHeight, like 1920x1280.");
+             goto end;
+          }
+        if (width == 0 || height == 0)
+          {
+             EINA_LOG_ERR("max-geometry width and height must be greater than 0.");
+             goto end;
+          }
+     }
+
    ee = ecore_evas_buffer_new(1, 1);
    e = ecore_evas_get(ee);
    if (!e)
@@ -142,11 +185,22 @@ main(int argc, char *argv[])
         goto end;
      }
 
+   evas_object_image_size_get(im, &image_w, &image_h);
+
 #ifndef NO_SIGNAL
    // Brutal way of
    signal(SIGINT, _sigint);
 #endif
 
+   // Find the extension and remove it
+   if (width || height)
+     {
+        char *tmp = strrchr(argv[arg_index + 1], '.');
+
+        if (tmp) *tmp = '\0';
+        if (tmp) job.extension = tmp + 1;
+     }
+
    job.output = argv[arg_index + 1];
    job.flags = eina_strbuf_string_get(flags);
    job.im = im;