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-rw-r--r--src/video_dec/foovideo.c285
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diff --git a/src/video_dec/foovideo.c b/src/video_dec/foovideo.c
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+/*
+ * Copyright (C) 2000-2003 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
+ *
+ * foovideo.c: This is a reference video decoder for the xine multimedia
+ * player. It really works too! It will output frames of packed YUY2 data
+ * where each byte in the map is the same value, which is 3 larger than the
+ * value from the last frame. This creates a slowly rotating solid color
+ * frame when the frames are played in succession.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <xine/xine_internal.h>
+#include <xine/video_out.h>
+#include <xine/buffer.h>
+#include <xine/xineutils.h>
+#include "bswap.h"
+
+#define VIDEOBUFSIZE 128*1024
+
+typedef struct {
+ video_decoder_class_t decoder_class;
+} foovideo_class_t;
+
+typedef struct foovideo_decoder_s {
+ video_decoder_t video_decoder; /* parent video decoder structure */
+
+ foovideo_class_t *class;
+ xine_stream_t *stream;
+
+ /* these are traditional variables in a video decoder object */
+ uint64_t video_step; /* frame duration in pts units */
+ int decoder_ok; /* current decoder status */
+ int skipframes;
+
+ unsigned char *buf; /* the accumulated buffer data */
+ int bufsize; /* the maximum size of buf */
+ int size; /* the current size of buf */
+
+ int width; /* the width of a video frame */
+ int height; /* the height of a video frame */
+ double ratio; /* the width to height ratio */
+
+ /* these are variables exclusive to the foo video decoder */
+ unsigned char current_yuv_byte;
+
+} foovideo_decoder_t;
+
+/**************************************************************************
+ * foovideo specific decode functions
+ *************************************************************************/
+
+/**************************************************************************
+ * xine video plugin functions
+ *************************************************************************/
+
+/*
+ * This function receives a buffer of data from the demuxer layer and
+ * figures out how to handle it based on its header flags.
+ */
+static void foovideo_decode_data (video_decoder_t *this_gen,
+ buf_element_t *buf) {
+
+ foovideo_decoder_t *this = (foovideo_decoder_t *) this_gen;
+ xine_bmiheader *bih;
+
+ vo_frame_t *img; /* video out frame */
+
+ /* a video decoder does not care about this flag (?) */
+ if (buf->decoder_flags & BUF_FLAG_PREVIEW)
+ return;
+
+ if (buf->decoder_flags & BUF_FLAG_FRAMERATE) {
+ this->video_step = buf->decoder_info[0];
+ _x_stream_info_set(this->stream, XINE_STREAM_INFO_FRAME_DURATION, this->video_step);
+ }
+
+ if (buf->decoder_flags & BUF_FLAG_STDHEADER) { /* need to initialize */
+ (this->stream->video_out->open) (this->stream->video_out, this->stream);
+
+ free(this->buf);
+
+ bih = (xine_bmiheader *) buf->content;
+ this->width = bih->biWidth;
+ this->height = bih->biHeight;
+ this->ratio = (double)this->width/(double)this->height;
+
+ if (this->buf)
+ free (this->buf);
+ this->bufsize = VIDEOBUFSIZE;
+ this->buf = malloc(this->bufsize);
+ this->size = 0;
+
+ /* take this opportunity to load the stream/meta info */
+ _x_meta_info_set_utf8(this->stream, XINE_META_INFO_VIDEOCODEC, "foovideo");
+
+ /* do anything else relating to initializing this decoder */
+ this->current_yuv_byte = 0;
+
+ this->decoder_ok = 1;
+
+ return;
+ } else if (this->decoder_ok) {
+
+ if (this->size + buf->size > this->bufsize) {
+ this->bufsize = this->size + 2 * buf->size;
+ this->buf = realloc (this->buf, this->bufsize);
+ }
+
+ xine_fast_memcpy (&this->buf[this->size], buf->content, buf->size);
+
+ this->size += buf->size;
+
+ if (buf->decoder_flags & BUF_FLAG_FRAME_END) {
+
+ img = this->stream->video_out->get_frame (this->stream->video_out,
+ this->width, this->height,
+ this->ratio,
+ XINE_IMGFMT_YUY2, VO_BOTH_FIELDS);
+
+ img->duration = this->video_step;
+ img->pts = buf->pts;
+ img->bad_frame = 0;
+
+ memset(img->base[0], this->current_yuv_byte,
+ this->width * this->height * 2);
+ this->current_yuv_byte += 3;
+
+ img->draw(img, this->stream);
+ img->free(img);
+
+ this->size = 0;
+ }
+ }
+}
+
+/*
+ * This function is called when xine needs to flush the system.
+ */
+static void foovideo_flush (video_decoder_t *this_gen) {
+}
+
+/*
+ * This function resets the video decoder.
+ */
+static void foovideo_reset (video_decoder_t *this_gen) {
+ foovideo_decoder_t *this = (foovideo_decoder_t *) this_gen;
+
+ this->size = 0;
+}
+
+/*
+ * The decoder should forget any stored pts values here.
+ */
+static void foovideo_discontinuity (video_decoder_t *this_gen) {
+ foovideo_decoder_t *this = (foovideo_decoder_t *) this_gen;
+
+}
+
+/*
+ * This function frees the video decoder instance allocated to the decoder.
+ */
+static void foovideo_dispose (video_decoder_t *this_gen) {
+
+ foovideo_decoder_t *this = (foovideo_decoder_t *) this_gen;
+
+ free (this->buf);
+
+ if (this->decoder_ok) {
+ this->decoder_ok = 0;
+ this->stream->video_out->close(this->stream->video_out, this->stream);
+ }
+
+ free (this_gen);
+}
+
+/*
+ * This function allocates, initializes, and returns a private video
+ * decoder structure.
+ */
+static video_decoder_t *open_plugin (video_decoder_class_t *class_gen, xine_stream_t *stream) {
+
+ foovideo_decoder_t *this ;
+
+ this = (foovideo_decoder_t *) calloc(1, sizeof(foovideo_decoder_t));
+
+ this->video_decoder.decode_data = foovideo_decode_data;
+ this->video_decoder.flush = foovideo_flush;
+ this->video_decoder.reset = foovideo_reset;
+ this->video_decoder.discontinuity = foovideo_discontinuity;
+ this->video_decoder.dispose = foovideo_dispose;
+ this->size = 0;
+
+ this->stream = stream;
+ this->class = (foovideo_class_t *) class_gen;
+
+ this->decoder_ok = 0;
+ this->buf = NULL;
+
+ return &this->video_decoder;
+}
+
+/*
+ * This function frees the video decoder class and any other memory that was
+ * allocated.
+ */
+static void dispose_class (video_decoder_class_t *this) {
+ free (this);
+}
+
+/*
+ * This function allocates a private video decoder class and initializes
+ * the class's member functions.
+ */
+static void *init_plugin (xine_t *xine, void *data) {
+
+ foovideo_class_t *this;
+
+ this = (foovideo_class_t *) calloc(1, sizeof(foovideo_class_t));
+
+ this->decoder_class.open_plugin = open_plugin;
+ this->decoder_class.identifier = "foovideo";
+ this->decoder_class.description = N_("foovideo: reference xine video decoder plugin");
+ this->decoder_class.dispose = dispose_class;
+
+ return this;
+}
+
+/*
+ * This is a list of all of the internal xine video buffer types that
+ * this decoder is able to handle. Check src/xine-engine/buffer.h for a
+ * list of valid buffer types (and add a new one if the one you need does
+ * not exist). Terminate the list with a 0.
+ */
+static const uint32_t video_types[] = {
+ /* BUF_VIDEO_FOOVIDEO, */
+ BUF_VIDEO_VQA,
+ BUF_VIDEO_SORENSON_V3,
+ 0
+};
+
+/*
+ * This data structure combines the list of supported xine buffer types and
+ * the priority that the plugin should be given with respect to other
+ * plugins that handle the same buffer type. A plugin with priority (n+1)
+ * will be used instead of a plugin with priority (n).
+ */
+static const decoder_info_t dec_info_video = {
+ video_types, /* supported types */
+ 5 /* priority */
+};
+
+/*
+ * The plugin catalog entry. This is the only information that this plugin
+ * will export to the public.
+ */
+const plugin_info_t xine_plugin_info[] EXPORTED = {
+ /* { type, API, "name", version, special_info, init_function } */
+ { PLUGIN_VIDEO_DECODER, 19, "foovideo", XINE_VERSION_CODE, &dec_info_video, init_plugin },
+ { PLUGIN_NONE, 0, "", 0, NULL, NULL }
+};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 15:32:31 +0000