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6148 | serge | 1 | /* |
2 | * Copyright (c) 2010 Stefano Sabatini |
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3 | * Copyright (c) 2008 Vitor Sessak |
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4 | * |
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5 | * This file is part of FFmpeg. |
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6 | * |
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7 | * FFmpeg is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU Lesser General Public |
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9 | * License as published by the Free Software Foundation; either |
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10 | * version 2.1 of the License, or (at your option) any later version. |
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11 | * |
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12 | * FFmpeg is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | * Lesser General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU Lesser General Public |
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18 | * License along with FFmpeg; if not, write to the Free Software |
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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20 | */ |
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21 | |||
22 | /** |
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23 | * @file |
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24 | * transposition filter |
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25 | * Based on MPlayer libmpcodecs/vf_rotate.c. |
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26 | */ |
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27 | |||
28 | #include |
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29 | |||
30 | #include "libavutil/intreadwrite.h" |
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31 | #include "libavutil/pixdesc.h" |
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32 | #include "libavutil/imgutils.h" |
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33 | #include "libavutil/internal.h" |
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34 | #include "libavutil/opt.h" |
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35 | #include "avfilter.h" |
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36 | #include "formats.h" |
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37 | #include "internal.h" |
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38 | #include "video.h" |
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39 | |||
40 | typedef enum { |
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41 | TRANSPOSE_PT_TYPE_NONE, |
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42 | TRANSPOSE_PT_TYPE_LANDSCAPE, |
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43 | TRANSPOSE_PT_TYPE_PORTRAIT, |
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44 | } PassthroughType; |
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45 | |||
46 | enum TransposeDir { |
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47 | TRANSPOSE_CCLOCK_FLIP, |
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48 | TRANSPOSE_CLOCK, |
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49 | TRANSPOSE_CCLOCK, |
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50 | TRANSPOSE_CLOCK_FLIP, |
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51 | }; |
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52 | |||
53 | typedef struct { |
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54 | const AVClass *class; |
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55 | int hsub, vsub; |
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56 | int pixsteps[4]; |
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57 | |||
58 | PassthroughType passthrough; ///< landscape passthrough mode enabled |
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59 | enum TransposeDir dir; |
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60 | } TransContext; |
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61 | |||
62 | static int query_formats(AVFilterContext *ctx) |
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63 | { |
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64 | AVFilterFormats *pix_fmts = NULL; |
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65 | int fmt; |
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66 | |||
67 | for (fmt = 0; fmt < AV_PIX_FMT_NB; fmt++) { |
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68 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt); |
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69 | if (!(desc->flags & AV_PIX_FMT_FLAG_PAL || |
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70 | desc->flags & AV_PIX_FMT_FLAG_HWACCEL || |
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71 | desc->flags & AV_PIX_FMT_FLAG_BITSTREAM || |
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72 | desc->log2_chroma_w != desc->log2_chroma_h)) |
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73 | ff_add_format(&pix_fmts, fmt); |
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74 | } |
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75 | |||
76 | |||
77 | ff_set_common_formats(ctx, pix_fmts); |
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78 | return 0; |
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79 | } |
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80 | |||
81 | static int config_props_output(AVFilterLink *outlink) |
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82 | { |
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83 | AVFilterContext *ctx = outlink->src; |
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84 | TransContext *trans = ctx->priv; |
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85 | AVFilterLink *inlink = ctx->inputs[0]; |
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86 | const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format); |
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87 | const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format); |
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88 | |||
89 | if (trans->dir&4) { |
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90 | av_log(ctx, AV_LOG_WARNING, |
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91 | "dir values greater than 3 are deprecated, use the passthrough option instead\n"); |
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92 | trans->dir &= 3; |
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93 | trans->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE; |
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94 | } |
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95 | |||
96 | if ((inlink->w >= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) || |
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97 | (inlink->w <= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) { |
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98 | av_log(ctx, AV_LOG_VERBOSE, |
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99 | "w:%d h:%d -> w:%d h:%d (passthrough mode)\n", |
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100 | inlink->w, inlink->h, inlink->w, inlink->h); |
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101 | return 0; |
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102 | } else { |
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103 | trans->passthrough = TRANSPOSE_PT_TYPE_NONE; |
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104 | } |
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105 | |||
106 | trans->hsub = desc_in->log2_chroma_w; |
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107 | trans->vsub = desc_in->log2_chroma_h; |
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108 | |||
109 | av_image_fill_max_pixsteps(trans->pixsteps, NULL, desc_out); |
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110 | |||
111 | outlink->w = inlink->h; |
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112 | outlink->h = inlink->w; |
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113 | |||
114 | if (inlink->sample_aspect_ratio.num){ |
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115 | outlink->sample_aspect_ratio = av_div_q((AVRational){1,1}, inlink->sample_aspect_ratio); |
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116 | } else |
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117 | outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; |
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118 | |||
119 | av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n", |
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120 | inlink->w, inlink->h, trans->dir, outlink->w, outlink->h, |
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121 | trans->dir == 1 || trans->dir == 3 ? "clockwise" : "counterclockwise", |
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122 | trans->dir == 0 || trans->dir == 3); |
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123 | return 0; |
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124 | } |
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125 | |||
126 | static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h) |
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127 | { |
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128 | TransContext *trans = inlink->dst->priv; |
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129 | |||
130 | return trans->passthrough ? |
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131 | ff_null_get_video_buffer (inlink, w, h) : |
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132 | ff_default_get_video_buffer(inlink, w, h); |
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133 | } |
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134 | |||
135 | typedef struct ThreadData { |
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136 | AVFrame *in, *out; |
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137 | } ThreadData; |
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138 | |||
139 | static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, |
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140 | int nb_jobs) |
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141 | { |
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142 | TransContext *trans = ctx->priv; |
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143 | ThreadData *td = arg; |
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144 | AVFrame *out = td->out; |
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145 | AVFrame *in = td->in; |
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146 | int plane; |
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147 | |||
148 | for (plane = 0; out->data[plane]; plane++) { |
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149 | int hsub = plane == 1 || plane == 2 ? trans->hsub : 0; |
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150 | int vsub = plane == 1 || plane == 2 ? trans->vsub : 0; |
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151 | int pixstep = trans->pixsteps[plane]; |
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152 | int inh = in->height >> vsub; |
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153 | int outw = FF_CEIL_RSHIFT(out->width, hsub); |
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154 | int outh = FF_CEIL_RSHIFT(out->height, vsub); |
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155 | int start = (outh * jobnr ) / nb_jobs; |
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156 | int end = (outh * (jobnr+1)) / nb_jobs; |
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157 | uint8_t *dst, *src; |
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158 | int dstlinesize, srclinesize; |
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159 | int x, y; |
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160 | |||
161 | dstlinesize = out->linesize[plane]; |
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162 | dst = out->data[plane] + start * dstlinesize; |
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163 | src = in->data[plane]; |
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164 | srclinesize = in->linesize[plane]; |
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165 | |||
166 | if (trans->dir&1) { |
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167 | src += in->linesize[plane] * (inh-1); |
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168 | srclinesize *= -1; |
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169 | } |
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170 | |||
171 | if (trans->dir&2) { |
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172 | dst = out->data[plane] + dstlinesize * (outh-start-1); |
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173 | dstlinesize *= -1; |
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174 | } |
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175 | |||
176 | switch (pixstep) { |
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177 | case 1: |
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178 | for (y = start; y < end; y++, dst += dstlinesize) |
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179 | for (x = 0; x < outw; x++) |
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180 | dst[x] = src[x*srclinesize + y]; |
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181 | break; |
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182 | case 2: |
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183 | for (y = start; y < end; y++, dst += dstlinesize) { |
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184 | for (x = 0; x < outw; x++) |
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185 | *((uint16_t *)(dst + 2*x)) = *((uint16_t *)(src + x*srclinesize + y*2)); |
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186 | } |
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187 | break; |
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188 | case 3: |
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189 | for (y = start; y < end; y++, dst += dstlinesize) { |
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190 | for (x = 0; x < outw; x++) { |
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191 | int32_t v = AV_RB24(src + x*srclinesize + y*3); |
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192 | AV_WB24(dst + 3*x, v); |
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193 | } |
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194 | } |
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195 | break; |
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196 | case 4: |
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197 | for (y = start; y < end; y++, dst += dstlinesize) { |
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198 | for (x = 0; x < outw; x++) |
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199 | *((uint32_t *)(dst + 4*x)) = *((uint32_t *)(src + x*srclinesize + y*4)); |
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200 | } |
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201 | break; |
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202 | case 6: |
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203 | for (y = start; y < end; y++, dst += dstlinesize) { |
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204 | for (x = 0; x < outw; x++) { |
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205 | int64_t v = AV_RB48(src + x*srclinesize + y*6); |
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206 | AV_WB48(dst + 6*x, v); |
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207 | } |
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208 | } |
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209 | break; |
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210 | case 8: |
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211 | for (y = start; y < end; y++, dst += dstlinesize) { |
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212 | for (x = 0; x < outw; x++) |
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213 | *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x*srclinesize + y*8)); |
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214 | } |
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215 | break; |
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216 | } |
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217 | } |
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218 | |||
219 | return 0; |
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220 | } |
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221 | |||
222 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
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223 | { |
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224 | AVFilterContext *ctx = inlink->dst; |
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225 | TransContext *trans = ctx->priv; |
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226 | AVFilterLink *outlink = ctx->outputs[0]; |
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227 | ThreadData td; |
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228 | AVFrame *out; |
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229 | |||
230 | if (trans->passthrough) |
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231 | return ff_filter_frame(outlink, in); |
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232 | |||
233 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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234 | if (!out) { |
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235 | av_frame_free(&in); |
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236 | return AVERROR(ENOMEM); |
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237 | } |
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238 | av_frame_copy_props(out, in); |
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239 | |||
240 | if (in->sample_aspect_ratio.num == 0) { |
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241 | out->sample_aspect_ratio = in->sample_aspect_ratio; |
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242 | } else { |
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243 | out->sample_aspect_ratio.num = in->sample_aspect_ratio.den; |
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244 | out->sample_aspect_ratio.den = in->sample_aspect_ratio.num; |
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245 | } |
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246 | |||
247 | td.in = in, td.out = out; |
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248 | ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ctx->graph->nb_threads)); |
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249 | av_frame_free(&in); |
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250 | return ff_filter_frame(outlink, out); |
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251 | } |
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252 | |||
253 | #define OFFSET(x) offsetof(TransContext, x) |
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254 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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255 | |||
256 | static const AVOption transpose_options[] = { |
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257 | { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" }, |
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258 | { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .unit = "dir" }, |
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259 | { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .unit = "dir" }, |
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260 | { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .unit = "dir" }, |
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261 | { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .unit = "dir" }, |
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262 | |||
263 | { "passthrough", "do not apply transposition if the input matches the specified geometry", |
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264 | OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" }, |
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265 | { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
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266 | { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
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267 | { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
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268 | |||
269 | { NULL } |
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270 | }; |
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271 | |||
272 | AVFILTER_DEFINE_CLASS(transpose); |
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273 | |||
274 | static const AVFilterPad avfilter_vf_transpose_inputs[] = { |
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275 | { |
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276 | .name = "default", |
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277 | .type = AVMEDIA_TYPE_VIDEO, |
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278 | .get_video_buffer = get_video_buffer, |
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279 | .filter_frame = filter_frame, |
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280 | }, |
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281 | { NULL } |
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282 | }; |
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283 | |||
284 | static const AVFilterPad avfilter_vf_transpose_outputs[] = { |
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285 | { |
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286 | .name = "default", |
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287 | .config_props = config_props_output, |
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288 | .type = AVMEDIA_TYPE_VIDEO, |
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289 | }, |
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290 | { NULL } |
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291 | }; |
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292 | |||
293 | AVFilter avfilter_vf_transpose = { |
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294 | .name = "transpose", |
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295 | .description = NULL_IF_CONFIG_SMALL("Transpose input video."), |
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296 | .priv_size = sizeof(TransContext), |
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297 | .priv_class = &transpose_class, |
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298 | .query_formats = query_formats, |
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299 | .inputs = avfilter_vf_transpose_inputs, |
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300 | .outputs = avfilter_vf_transpose_outputs, |
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301 | .flags = AVFILTER_FLAG_SLICE_THREADS, |
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302 | };>>>>>>>>>>>>=>>> |