/* * Copyright (C) 2003-2005 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 image video decoder */ #include #include #include #include #include #include #include #define LOG_MODULE "image_video_decoder" #define LOG_VERBOSE /* #define LOG */ #include #ifdef PACKAGE_NAME #undef PACKAGE_BUGREPORT #undef PACKAGE_NAME #undef PACKAGE_STRING #undef PACKAGE_TARNAME #undef PACKAGE_VERSION #endif #include #include #include #include #include "bswap.h" /* In 6.4.5.4 MagickGetImagePixels changed to MagickGetAuthenticPixels * But upstream did not update their deprecated compat stuff. * So do a fun hack to make it work. * - 2008/11/26 Robin H. Johnson */ #if MagickLibVersion >= 0x645 #define MagickGetImagePixels MagickGetAuthenticPixels #endif 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; unsigned char *image; int index; } 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; if (!this->video_open) { lprintf("opening video\n"); (this->stream->video_out->open) (this->stream->video_out, this->stream); this->video_open = 1; } xine_buffer_copyin(this->image, this->index, buf->mem, buf->size); this->index += buf->size; if (buf->decoder_flags & BUF_FLAG_FRAME_END) { int width, height, i; int status; MagickWand *wand; uint8_t *img_buf, *img_buf_ptr; yuv_planes_t yuv_planes; vo_frame_t *img; /* * this->image -> rgb data */ wand = NewMagickWand(); status = MagickReadImageBlob(wand, this->image, this->index); this->index = 0; if (!status) { DestroyMagickWand(wand); lprintf("error loading image\n"); return; } width = MagickGetImageWidth(wand) & ~1; /* must be even for init_yuv_planes */ height = MagickGetImageHeight(wand); img_buf = malloc(width * height * 3); MagickGetImagePixels(wand, 0, 0, width, height, "RGB", CharPixel, img_buf); DestroyMagickWand(wand); _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); img_buf_ptr = img_buf; for (i=0; i < width*height; i++) { uint8_t r = *(img_buf_ptr++); uint8_t g = *(img_buf_ptr++); uint8_t b = *(img_buf_ptr++); yuv_planes.y[i] = COMPUTE_Y(r, g, b); yuv_planes.u[i] = COMPUTE_U(r, g, b); yuv_planes.v[i] = COMPUTE_V(r, g, b); } free(img_buf); /* * 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) */ this->index = 0; } 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; } xine_buffer_free(this->image); 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"); 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 */ this->image = xine_buffer_init(10240); 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 = "imagevdec"; this->decoder_class.description = N_("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, 0 }; static const decoder_info_t dec_info_image = { supported_types, /* supported types */ 6 /* priority */ }; const plugin_info_t xine_plugin_info[] EXPORTED = { /* type, API, "name", version, special_info, init_function */ { PLUGIN_VIDEO_DECODER, 19, "image", XINE_VERSION_CODE, &dec_info_image, init_class }, { PLUGIN_NONE, 0, "", 0, NULL, NULL } };