vl_decoder.c revision 82e8bf36d8fcd46bcb76ec300875a47c7312f1a1
1/************************************************************************** 2 * 3 * Copyright 2009 Younes Manton. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "pipe/p_video_decoder.h" 29 30#include "util/u_video.h" 31 32#include "vl_decoder.h" 33#include "vl_mpeg12_decoder.h" 34 35bool 36vl_profile_supported(struct pipe_screen *screen, enum pipe_video_profile profile) 37{ 38 assert(screen); 39 switch (u_reduce_video_profile(profile)) { 40 case PIPE_VIDEO_CODEC_MPEG12: 41 return true; 42 default: 43 return false; 44 } 45} 46 47unsigned 48vl_num_buffers_desired(struct pipe_screen *screen, enum pipe_video_profile profile) 49{ 50 assert(screen); 51 switch (u_reduce_video_profile(profile)) { 52 case PIPE_VIDEO_CODEC_MPEG12: 53 return 4; 54 55 default: 56 return 1; 57 } 58} 59 60struct pipe_video_decoder * 61vl_create_decoder(struct pipe_context *pipe, 62 enum pipe_video_profile profile, 63 enum pipe_video_entrypoint entrypoint, 64 enum pipe_video_chroma_format chroma_format, 65 unsigned width, unsigned height, unsigned max_references) 66{ 67 unsigned buffer_width, buffer_height; 68 bool pot_buffers; 69 70 assert(pipe); 71 assert(width > 0 && height > 0); 72 73 pot_buffers = !pipe->screen->get_video_param 74 ( 75 pipe->screen, 76 profile, 77 PIPE_VIDEO_CAP_NPOT_TEXTURES 78 ); 79 80 buffer_width = pot_buffers ? util_next_power_of_two(width) : align(width, MACROBLOCK_WIDTH); 81 buffer_height = pot_buffers ? util_next_power_of_two(height) : align(height, MACROBLOCK_HEIGHT); 82 83 switch (u_reduce_video_profile(profile)) { 84 case PIPE_VIDEO_CODEC_MPEG12: 85 return vl_create_mpeg12_decoder(pipe, profile, entrypoint, chroma_format, buffer_width, buffer_height, max_references); 86 default: 87 return NULL; 88 } 89 return NULL; 90} 91