summaryrefslogtreecommitdiff
path: root/src/video_dec/gdkpixbuf.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/video_dec/gdkpixbuf.c')
-rw-r--r--src/video_dec/gdkpixbuf.c299
1 files changed, 299 insertions, 0 deletions
diff --git a/src/video_dec/gdkpixbuf.c b/src/video_dec/gdkpixbuf.c
new file mode 100644
index 000000000..ed88323fb
--- /dev/null
+++ b/src/video_dec/gdkpixbuf.c
@@ -0,0 +1,299 @@
+/*
+ * Copyright (C) 2006 the xine project
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine 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 Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * xine 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * a gdk-pixbuf-based image video decoder
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#define LOG_MODULE "gdkpixbuf_video_decoder"
+#define LOG_VERBOSE
+/*
+#define LOG
+*/
+
+#include <xine/xine_internal.h>
+#include <xine/video_out.h>
+#include <xine/buffer.h>
+#include <xine/xineutils.h>
+#include "bswap.h"
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+typedef struct {
+ video_decoder_class_t decoder_class;
+
+ /*
+ * private variables
+ */
+
+} image_class_t;
+
+
+typedef struct image_decoder_s {
+ video_decoder_t video_decoder;
+
+ image_class_t *cls;
+
+ xine_stream_t *stream;
+ int video_open;
+
+ GdkPixbufLoader *loader;
+
+} image_decoder_t;
+
+
+static void image_decode_data (video_decoder_t *this_gen, buf_element_t *buf) {
+ image_decoder_t *this = (image_decoder_t *) this_gen;
+ GError *error = NULL;
+
+ if (!this->video_open) {
+ lprintf("opening video\n");
+ (this->stream->video_out->open) (this->stream->video_out, this->stream);
+ this->video_open = 1;
+ }
+
+ if (this->loader == NULL) {
+ this->loader = gdk_pixbuf_loader_new ();
+ }
+
+ if (gdk_pixbuf_loader_write (this->loader, buf->mem, buf->size, &error) == FALSE) {
+ lprintf("error loading image: %s\n", error->message);
+ g_error_free (error);
+ gdk_pixbuf_loader_close (this->loader, NULL);
+ g_object_unref (G_OBJECT (this->loader));
+ this->loader = NULL;
+ return;
+ }
+
+ if (buf->decoder_flags & BUF_FLAG_FRAME_END) {
+ GdkPixbuf *pixbuf;
+ int width, height, x, y, rowstride, n_channels, i;
+ guchar *img_buf;
+ yuv_planes_t yuv_planes;
+ vo_frame_t *img;
+
+ /*
+ * this->image -> rgb data
+ */
+ if (gdk_pixbuf_loader_close (this->loader, &error) == FALSE) {
+ lprintf("error loading image: %s\n", error->message);
+ g_error_free (error);
+ g_object_unref (G_OBJECT (this->loader));
+ this->loader = NULL;
+ return;
+ }
+
+ pixbuf = gdk_pixbuf_loader_get_pixbuf (this->loader);
+ if (pixbuf != NULL)
+ g_object_ref (G_OBJECT (pixbuf));
+ g_object_unref (this->loader);
+ this->loader = NULL;
+
+ if (pixbuf == NULL) {
+ lprintf("error loading image\n");
+ return;
+ }
+
+ width = gdk_pixbuf_get_width (pixbuf) & ~1; /* must be even for init_yuv_planes */
+ height = gdk_pixbuf_get_height (pixbuf);
+ img_buf = gdk_pixbuf_get_pixels (pixbuf);
+
+ _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_WIDTH, width);
+ _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_HEIGHT, height);
+
+ lprintf("image loaded successfully\n");
+
+ /*
+ * rgb data -> yuv_planes
+ */
+ init_yuv_planes(&yuv_planes, width, height);
+
+ n_channels = gdk_pixbuf_get_n_channels (pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+ i = 0;
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ guchar *p;
+ p = img_buf + y * rowstride + x * n_channels;
+
+ yuv_planes.y[i] = COMPUTE_Y (p[0], p[1], p[2]);
+ yuv_planes.u[i] = COMPUTE_U (p[0], p[1], p[2]);
+ yuv_planes.v[i] = COMPUTE_V (p[0], p[1], p[2]);
+
+ i++;
+ }
+ }
+ gdk_pixbuf_unref (pixbuf);
+
+ /*
+ * alloc and draw video frame
+ */
+ img = this->stream->video_out->get_frame (this->stream->video_out, width,
+ height, (double)width/(double)height,
+ XINE_IMGFMT_YUY2,
+ VO_BOTH_FIELDS);
+ img->pts = buf->pts;
+ img->duration = 3600;
+ img->bad_frame = 0;
+
+ yuv444_to_yuy2(&yuv_planes, img->base[0], img->pitches[0]);
+ free_yuv_planes(&yuv_planes);
+
+ _x_stream_info_set(this->stream, XINE_STREAM_INFO_FRAME_DURATION, img->duration);
+
+ img->draw(img, this->stream);
+ img->free(img);
+ }
+}
+
+
+static void image_flush (video_decoder_t *this_gen) {
+ /* image_decoder_t *this = (image_decoder_t *) this_gen; */
+
+ /*
+ * flush out any frames that are still stored in the decoder
+ */
+}
+
+
+static void image_reset (video_decoder_t *this_gen) {
+ image_decoder_t *this = (image_decoder_t *) this_gen;
+
+ /*
+ * reset decoder after engine flush (prepare for new
+ * video data not related to recently decoded data)
+ */
+
+ if (this->loader != NULL) {
+ gdk_pixbuf_loader_close (this->loader, NULL);
+ g_object_unref (G_OBJECT (this->loader));
+ this->loader = NULL;
+ }
+}
+
+
+static void image_discontinuity (video_decoder_t *this_gen) {
+ /* image_decoder_t *this = (image_decoder_t *) this_gen; */
+
+ /*
+ * a time reference discontinuity has happened.
+ * that is, it must forget any currently held pts value
+ */
+}
+
+static void image_dispose (video_decoder_t *this_gen) {
+ image_decoder_t *this = (image_decoder_t *) this_gen;
+
+ if (this->video_open) {
+ lprintf("closing video\n");
+
+ this->stream->video_out->close(this->stream->video_out, this->stream);
+ this->video_open = 0;
+ }
+
+ if (this->loader != NULL) {
+ gdk_pixbuf_loader_close (this->loader, NULL);
+ g_object_unref (G_OBJECT (this->loader));
+ this->loader = NULL;
+ }
+
+ lprintf("closed\n");
+ free (this);
+}
+
+
+static video_decoder_t *open_plugin (video_decoder_class_t *class_gen,
+ xine_stream_t *stream) {
+
+ image_class_t *cls = (image_class_t *) class_gen;
+ image_decoder_t *this;
+
+ lprintf("opened\n");
+
+ g_type_init ();
+
+ this = (image_decoder_t *) calloc(1, sizeof(image_decoder_t));
+
+ this->video_decoder.decode_data = image_decode_data;
+ this->video_decoder.flush = image_flush;
+ this->video_decoder.reset = image_reset;
+ this->video_decoder.discontinuity = image_discontinuity;
+ this->video_decoder.dispose = image_dispose;
+ this->cls = cls;
+ this->stream = stream;
+
+ /*
+ * initialisation of privates
+ */
+
+ return &this->video_decoder;
+}
+
+/*
+ * image plugin class
+ */
+static void *init_class (xine_t *xine, void *data) {
+
+ image_class_t *this;
+
+ this = (image_class_t *) calloc(1, sizeof(image_class_t));
+
+ this->decoder_class.open_plugin = open_plugin;
+ this->decoder_class.identifier = "gdkpixbuf";
+ this->decoder_class.description = N_("gdk-pixbuf image video decoder plugin");
+ this->decoder_class.dispose = default_video_decoder_class_dispose;
+
+ /*
+ * initialisation of privates
+ */
+
+ lprintf("class opened\n");
+
+ return this;
+}
+
+/*
+ * exported plugin catalog entry
+ */
+
+static const uint32_t supported_types[] = { BUF_VIDEO_IMAGE, BUF_VIDEO_JPEG, 0 };
+
+static const decoder_info_t dec_info_image = {
+ supported_types, /* supported types */
+ 7 /* priority */
+};
+
+const plugin_info_t xine_plugin_info[] EXPORTED = {
+ /* type, API, "name", version, special_info, init_function */
+ { PLUGIN_VIDEO_DECODER, 19, "gdkpixbuf", XINE_VERSION_CODE, &dec_info_image, init_class },
+ { PLUGIN_NONE, 0, "", 0, NULL, NULL }
+};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 16:13:47 +0000