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RetroArch/tasks/task_image.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <file/nbio.h>
#include <formats/image.h>
#include <compat/strl.h>
#include <retro_assert.h>
#include <retro_miscellaneous.h>
#include <lists/string_list.h>
#include <rhash.h>
#ifdef HAVE_MENU
#include "../menu/menu_driver.h"
#endif
#include "tasks_internal.h"
#include "../verbosity.h"
#define CB_MENU_WALLPAPER 0xb476e505U
#define CB_MENU_THUMBNAIL 0x82f93a21U
enum image_status_enum
{
IMAGE_STATUS_POLL = 0,
IMAGE_STATUS_TRANSFER,
IMAGE_STATUS_TRANSFER_PARSE,
IMAGE_STATUS_PROCESS_TRANSFER,
IMAGE_STATUS_PROCESS_TRANSFER_PARSE,
IMAGE_STATUS_TRANSFER_PARSE_FREE
};
typedef struct nbio_image_handle nbio_image_handle_t;
struct nbio_image_handle
{
struct texture_image ti;
bool is_blocking;
bool is_blocking_on_processing;
bool is_finished;
transfer_cb_t cb;
void *handle;
size_t size;
unsigned processing_pos_increment;
unsigned pos_increment;
int processing_final_state;
enum image_status_enum status;
};
static int cb_image_menu_upload_generic(void *data, size_t len)
{
unsigned r_shift, g_shift, b_shift, a_shift;
nbio_handle_t *nbio = (nbio_handle_t*)data;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (!nbio || !image)
return -1;
if (image->processing_final_state == IMAGE_PROCESS_ERROR ||
image->processing_final_state == IMAGE_PROCESS_ERROR_END)
return -1;
image_texture_set_color_shifts(&r_shift, &g_shift, &b_shift,
&a_shift);
image_texture_color_convert(r_shift, g_shift, b_shift,
a_shift, &image->ti);
image->is_blocking_on_processing = false;
image->is_blocking = true;
image->is_finished = true;
nbio->is_finished = true;
return 0;
}
static int task_image_iterate_transfer_parse(nbio_handle_t *nbio)
{
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (image->handle && image->cb)
{
size_t len = 0;
image->cb(nbio, len);
}
return 0;
}
static int task_image_process(
nbio_handle_t *nbio,
unsigned *width,
unsigned *height)
{
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
int retval = image_transfer_process(
image->handle,
nbio->image_type,
&image->ti.pixels, image->size, width, height);
if (retval == IMAGE_PROCESS_ERROR)
return IMAGE_PROCESS_ERROR;
image->ti.width = *width;
image->ti.height = *height;
return retval;
}
static int cb_image_menu_generic(nbio_handle_t *nbio)
{
unsigned width = 0, height = 0;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (!nbio || !image)
return -1;
switch (task_image_process(nbio,
&width, &height))
{
case IMAGE_PROCESS_ERROR:
case IMAGE_PROCESS_ERROR_END:
return -1;
default:
break;
}
image->is_blocking_on_processing = true;
image->is_finished = false;
return 0;
}
static int cb_image_menu_thumbnail(void *data, size_t len)
{
nbio_handle_t *nbio = (nbio_handle_t*)data;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (cb_image_menu_generic(nbio) != 0)
return -1;
image->cb = &cb_image_menu_upload_generic;
return 0;
}
static int task_image_iterate_process_transfer(nbio_handle_t *nbio)
{
unsigned i, width = 0, height = 0;
int retval = 0;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (!nbio || !image)
return -1;
for (i = 0; i < image->processing_pos_increment; i++)
{
retval = task_image_process(nbio,
&width, &height);
if (retval != IMAGE_PROCESS_NEXT)
break;
}
if (retval == IMAGE_PROCESS_NEXT)
return 0;
image->processing_final_state = retval;
return -1;
}
static int task_image_iterate_transfer(nbio_handle_t *nbio)
{
unsigned i;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (!nbio || !image)
goto error;
if (image->is_finished)
return 0;
for (i = 0; i < image->pos_increment; i++)
{
if (!image_transfer_iterate(image->handle, nbio->image_type))
goto error;
}
return 0;
error:
return -1;
}
static void rarch_task_image_load_free_internal(nbio_handle_t *nbio)
{
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (image)
free(image);
image_transfer_free(image->handle, nbio->image_type);
image_texture_free(&image->ti);
image->handle = NULL;
image->cb = NULL;
}
static int cb_nbio_generic(nbio_handle_t *nbio, size_t *len)
{
void *ptr = NULL;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
if (!image || !image->handle)
goto error;
ptr = nbio_get_ptr(nbio->handle, len);
if (!ptr)
goto error;
image_transfer_set_buffer_ptr(image->handle, nbio->image_type, ptr);
image->size = *len;
image->pos_increment = (*len / 2) ? (*len / 2) : 1;
image->processing_pos_increment = (*len / 4) ? (*len / 4) : 1;
if (!image_transfer_start(image->handle, nbio->image_type))
goto error;
image->is_blocking = false;
image->is_finished = false;
nbio->is_finished = true;
return 0;
error:
rarch_task_image_load_free_internal(nbio);
return -1;
}
static int cb_nbio_image_menu_thumbnail(void *data, size_t len)
{
nbio_image_handle_t *image = NULL;
void *handle = NULL;
nbio_handle_t *nbio = (nbio_handle_t*)data;
if (!nbio)
goto error;
handle = image_transfer_new(nbio->image_type);
if (!handle)
goto error;
image = (nbio_image_handle_t*)nbio->data;
image->handle = handle;
image->size = len;
image->cb = &cb_image_menu_thumbnail;
return cb_nbio_generic(nbio, &len);
error:
return -1;
}
bool rarch_task_image_load_handler(retro_task_t *task)
{
nbio_handle_t *nbio = (nbio_handle_t*)task->state;
nbio_image_handle_t *image = (nbio_image_handle_t*)nbio->data;
switch (image->status)
{
case IMAGE_STATUS_PROCESS_TRANSFER:
if (task_image_iterate_process_transfer(nbio) == -1)
image->status = IMAGE_STATUS_PROCESS_TRANSFER_PARSE;
break;
case IMAGE_STATUS_TRANSFER_PARSE:
task_image_iterate_transfer_parse(nbio);
if (image->is_blocking_on_processing)
image->status = IMAGE_STATUS_PROCESS_TRANSFER;
break;
case IMAGE_STATUS_TRANSFER:
if (!image->is_blocking)
if (task_image_iterate_transfer(nbio) == -1)
image->status = IMAGE_STATUS_TRANSFER_PARSE;
break;
case IMAGE_STATUS_PROCESS_TRANSFER_PARSE:
task_image_iterate_transfer_parse(nbio);
if (!image->is_finished)
break;
case IMAGE_STATUS_TRANSFER_PARSE_FREE:
case IMAGE_STATUS_POLL:
default:
break;
}
if ( nbio->is_finished
&& image->is_finished
&& !task->cancelled)
{
task->task_data = malloc(sizeof(image->ti));
if (task->task_data)
memcpy(task->task_data, &image->ti, sizeof(image->ti));
return false;
}
return true;
}
bool rarch_task_push_image_load(const char *fullpath,
const char *type, retro_task_callback_t cb, void *user_data)
{
nbio_handle_t *nbio = NULL;
retro_task_t *t = NULL;
uint32_t cb_type_hash = djb2_calculate(type);
struct nbio_t *handle = nbio_open(fullpath, NBIO_READ);
nbio_image_handle_t *image = NULL;
switch (cb_type_hash)
{
case CB_MENU_WALLPAPER:
case CB_MENU_THUMBNAIL:
break;
default:
goto error;
}
if (!handle)
goto error;
nbio = (nbio_handle_t*)calloc(1, sizeof(*nbio));
if (!nbio)
goto error;
image = (nbio_image_handle_t*)calloc(1, sizeof(*image));
if (!image)
goto error;
image->status = IMAGE_STATUS_TRANSFER;
nbio->data = (nbio_image_handle_t*)image;
nbio->handle = handle;
nbio->is_finished = false;
nbio->cb = &cb_nbio_image_menu_thumbnail;
nbio->status = NBIO_STATUS_TRANSFER;
if (strstr(fullpath, ".png"))
nbio->image_type = IMAGE_TYPE_PNG;
else if (strstr(fullpath, ".jpeg") || strstr(fullpath, ".jpg"))
nbio->image_type = IMAGE_TYPE_JPEG;
else if (strstr(fullpath, ".bmp"))
nbio->image_type = IMAGE_TYPE_BMP;
else if (strstr(fullpath, ".tga"))
nbio->image_type = IMAGE_TYPE_TGA;
nbio_begin_read(handle);
t = (retro_task_t*)calloc(1, sizeof(*t));
if (!t)
goto error;
t->state = nbio;
t->handler = rarch_task_file_load_handler;
t->cleanup = rarch_task_image_load_free;
t->callback = cb;
t->user_data = user_data;
task_queue_ctl(TASK_QUEUE_CTL_PUSH, t);
return true;
error:
rarch_task_image_load_free(t);
nbio_free(handle);
if (nbio)
free(nbio);
RARCH_ERR("[image load] Failed to open '%s': %s.\n",
fullpath, strerror(errno));
return false;
}
void rarch_task_image_load_free(retro_task_t *task)
{
nbio_handle_t *nbio = task ? (nbio_handle_t*)task->state : NULL;
if (!nbio)
return;
rarch_task_image_load_free_internal(nbio);
}
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