/* * Copyright (C) 2000-2014 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 * * Raw RGB "Decoder" by Mike Melanson (melanson@pcisys.net) * Actually, this decoder just converts a raw RGB image to a YUY2 map * suitable for display under xine. * * This decoder deals with raw RGB data from Microsoft and Quicktime files. * Data from a MS file can be 32-, 24-, 16-, or 8-bit. The latter can also * be grayscale, depending on whether a palette is present. Data from a QT * file can be 32-, 24-, 16-, 8-, 4-, 2-, or 1-bit. Any resolutions <= 8 * can also be greyscale depending on what the QT file specifies. * * One more catch: Raw RGB from a Microsoft file is upside down. This is * indicated by a negative height parameter. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #define LOG_MODULE "rgb" #define LOG_VERBOSE /* #define LOG */ #include #include #include #include typedef struct { video_decoder_class_t decoder_class; } rgb_class_t; typedef struct rgb_decoder_s { video_decoder_t video_decoder; /* parent video decoder structure */ rgb_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 */ int bytes_per_pixel; int bit_depth; int upside_down; int palette_loaded; int color_matrix; const char *fmtstring; void *rgb2yuy2; } rgb_decoder_t; static void rgb_decode_data (video_decoder_t *this_gen, buf_element_t *buf) { rgb_decoder_t *this = (rgb_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_SPECIAL) && (buf->decoder_info[1] == BUF_SPECIAL_PALETTE)) { rgb2yuy2_palette (this->rgb2yuy2, buf->decoder_info_ptr[2], buf->decoder_info[2], this->bit_depth); this->palette_loaded = 1; } 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); bih = (xine_bmiheader *) buf->content; this->width = bih->biWidth; this->height = bih->biHeight; if (this->height < 0) { this->upside_down = 1; this->height = -this->height; } else { this->upside_down = 0; } this->ratio = (double)this->width/(double)this->height; this->bit_depth = bih->biBitCount; if (this->bit_depth > 32) this->bit_depth &= 0x1F; /* round this number up in case of 15 */ lprintf("width = %d, height = %d, bit_depth = %d\n", this->width, this->height, this->bit_depth); this->bytes_per_pixel = (this->bit_depth + 1) / 8; (this->stream->video_out->open) (this->stream->video_out, this->stream); if (this->bit_depth <= 8) { this->fmtstring = "rgb"; /* see palette_entry_t */ } else if (this->upside_down) { this->fmtstring = this->bytes_per_pixel == 2 ? "rgb555le" : this->bytes_per_pixel == 3 ? "bgr" : "bgra"; } else { this->fmtstring = this->bytes_per_pixel == 2 ? "rgb555be" : this->bytes_per_pixel == 3 ? "rgb" : "rgba"; } this->color_matrix = this->stream->video_out->get_capabilities (this->stream->video_out) & VO_CAP_FULLRANGE ? 11 : 10; rgb2yuy2_free (this->rgb2yuy2); this->rgb2yuy2 = rgb2yuy2_alloc (this->color_matrix, this->fmtstring); free (this->buf); /* minimal buffer size */ this->bufsize = this->width * this->height * this->bytes_per_pixel; this->buf = calloc(1, this->bufsize); this->size = 0; this->decoder_ok = 1; /* load the stream/meta info */ _x_meta_info_set_utf8(this->stream, XINE_META_INFO_VIDEOCODEC, "Raw RGB"); 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) { int flags = VO_BOTH_FIELDS; VO_SET_FLAGS_CM (this->color_matrix, flags); img = this->stream->video_out->get_frame (this->stream->video_out, this->width, this->height, this->ratio, XINE_IMGFMT_YUY2, flags); img->duration = this->video_step; img->pts = buf->pts; img->bad_frame = 0; if ((this->bit_depth <= 8) && !this->palette_loaded) { rgb2yuy2_palette (this->rgb2yuy2, NULL, 1 << this->bit_depth, this->bit_depth); this->palette_loaded = 1; } if (this->upside_down) { rgb2yuy2_slice ( this->rgb2yuy2, this->buf + (this->height - 1) * this->width, -this->width, img->base[0], img->pitches[0], this->width, this->height); } else { rgb2yuy2_slice ( this->rgb2yuy2, this->buf, this->width, img->base[0], img->pitches[0], this->width, this->height); } img->draw(img, this->stream); img->free(img); this->size = 0; } } } /* * This function is called when xine needs to flush the system. Not * sure when or if this is used or even if it needs to do anything. */ static void rgb_flush (video_decoder_t *this_gen) { } /* * This function resets the video decoder. */ static void rgb_reset (video_decoder_t *this_gen) { rgb_decoder_t *this = (rgb_decoder_t *) this_gen; this->size = 0; } static void rgb_discontinuity (video_decoder_t *this_gen) { } /* * This function frees the video decoder instance allocated to the decoder. */ static void rgb_dispose (video_decoder_t *this_gen) { rgb_decoder_t *this = (rgb_decoder_t *) this_gen; free (this->buf); rgb2yuy2_free (this->rgb2yuy2); if (this->decoder_ok) { this->decoder_ok = 0; this->stream->video_out->close(this->stream->video_out, this->stream); } free (this_gen); } static video_decoder_t *open_plugin (video_decoder_class_t *class_gen, xine_stream_t *stream) { rgb_decoder_t *this ; this = (rgb_decoder_t *) calloc(1, sizeof(rgb_decoder_t)); this->video_decoder.decode_data = rgb_decode_data; this->video_decoder.flush = rgb_flush; this->video_decoder.reset = rgb_reset; this->video_decoder.discontinuity = rgb_discontinuity; this->video_decoder.dispose = rgb_dispose; this->size = 0; this->stream = stream; this->class = (rgb_class_t *) class_gen; this->decoder_ok = 0; this->buf = NULL; return &this->video_decoder; } static void *init_plugin (xine_t *xine, void *data) { rgb_class_t *this; this = (rgb_class_t *) calloc(1, sizeof(rgb_class_t)); this->decoder_class.open_plugin = open_plugin; this->decoder_class.identifier = "RGB"; this->decoder_class.description = N_("Raw RGB video decoder plugin"); this->decoder_class.dispose = default_video_decoder_class_dispose; return this; } /* * exported plugin catalog entry */ static const uint32_t video_types[] = { BUF_VIDEO_RGB, 0 }; static const decoder_info_t dec_info_video = { video_types, /* supported types */ 1 /* priority */ }; const plugin_info_t xine_plugin_info[] EXPORTED = { /* type, API, "name", version, special_info, init_function */ { PLUGIN_VIDEO_DECODER, 19, "rgb", XINE_VERSION_CODE, &dec_info_video, init_plugin }, { PLUGIN_NONE, 0, "", 0, NULL, NULL } };