repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | /** | |
| 22 | * @file | |
| 23 | * swap UV filter | |
| 24 | */ | |
| 25 | ||
| 26 | #include "libavutil/pixdesc.h" | |
| 27 | #include "avfilter.h" | |
| 28 | #include "formats.h" | |
| 29 | #include "internal.h" | |
| 30 | #include "video.h" | |
| 31 | ||
| 32 | static void do_swap(AVFrame *frame) | |
| 33 | { | |
| 34 | FFSWAP(uint8_t*, frame->data[1], frame->data[2]); | |
| 35 | FFSWAP(int, frame->linesize[1], frame->linesize[2]); | |
| 36 | FFSWAP(uint64_t, frame->error[1], frame->error[2]); | |
| 37 | FFSWAP(AVBufferRef*, frame->buf[1], frame->buf[2]); | |
| 38 | } | |
| 39 | ||
| 40 | static AVFrame *get_video_buffer(AVFilterLink *link, int w, int h) | |
| 41 | { | |
| 42 | AVFrame *picref = ff_default_get_video_buffer(link, w, h); | |
| 43 | do_swap(picref); | |
| 44 | return picref; | |
| 45 | } | |
| 46 | ||
| 47 | static int filter_frame(AVFilterLink *link, AVFrame *inpicref) | |
| 48 | { | |
| 49 | do_swap(inpicref); | |
| 50 | return ff_filter_frame(link->dst->outputs[0], inpicref); | |
| 51 | } | |
| 52 | ||
| 53 | static int is_planar_yuv(const AVPixFmtDescriptor *desc) | |
| 54 | { | |
| 55 | int i; | |
| 56 | ||
| 57 | if (desc->flags & ~(AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA) || | |
| 58 | desc->nb_components < 3 || | |
| 59 | (desc->comp[1].depth_minus1 != desc->comp[2].depth_minus1)) | |
| 60 | return 0; | |
| 61 | for (i = 0; i < desc->nb_components; i++) { | |
| 62 | if (desc->comp[i].offset_plus1 != 1 || | |
| 63 | desc->comp[i].shift != 0 || | |
| 64 | desc->comp[i].plane != i) | |
| 65 | return 0; | |
| 66 | } | |
| 67 | ||
| 68 | return 1; | |
| 69 | } | |
| 70 | ||
| 71 | static int query_formats(AVFilterContext *ctx) | |
| 72 | { | |
| 73 | AVFilterFormats *formats = NULL; | |
| 74 | int fmt; | |
| 75 | ||
| 76 | for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) { | |
| 77 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt); | |
| 78 | if (is_planar_yuv(desc)) | |
| 79 | ff_add_format(&formats, fmt); | |
| 80 | } | |
| 81 | ||
| 82 | ff_set_common_formats(ctx, formats); | |
| 83 | return 0; | |
| 84 | } | |
| 85 | ||
| 86 | static const AVFilterPad swapuv_inputs[] = { | |
| 87 | { | |
| 88 | .name = "default", | |
| 89 | .type = AVMEDIA_TYPE_VIDEO, | |
| 90 | .get_video_buffer = get_video_buffer, | |
| 91 | .filter_frame = filter_frame, | |
| 92 | }, | |
| 93 | { NULL } | |
| 94 | }; | |
| 95 | ||
| 96 | static const AVFilterPad swapuv_outputs[] = { | |
| 97 | { | |
| 98 | .name = "default", | |
| 99 | .type = AVMEDIA_TYPE_VIDEO, | |
| 100 | }, | |
| 101 | { NULL } | |
| 102 | }; | |
| 103 | ||
| 104 | AVFilter ff_vf_swapuv = { | |
| 105 | .name = "swapuv", | |
| 106 | .description = NULL_IF_CONFIG_SMALL("Swap U and V components."), | |
| 107 | .query_formats = query_formats, | |
| 108 | .inputs = swapuv_inputs, | |
| 109 | .outputs = swapuv_outputs, | |
| 110 | }; |