| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2010 Stefano Sabatini | ||
| 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 | * Set timebase for the output link. | ||
| 24 | */ | ||
| 25 | |||
| 26 | #include "config_components.h" | ||
| 27 | |||
| 28 | #include <inttypes.h> | ||
| 29 | #include <stdio.h> | ||
| 30 | |||
| 31 | #include "libavutil/avstring.h" | ||
| 32 | #include "libavutil/eval.h" | ||
| 33 | #include "libavutil/internal.h" | ||
| 34 | #include "libavutil/mathematics.h" | ||
| 35 | #include "libavutil/opt.h" | ||
| 36 | #include "libavutil/rational.h" | ||
| 37 | #include "audio.h" | ||
| 38 | #include "avfilter.h" | ||
| 39 | #include "filters.h" | ||
| 40 | #include "video.h" | ||
| 41 | |||
| 42 | static const char *const var_names[] = { | ||
| 43 | "AVTB", /* default timebase 1/AV_TIME_BASE */ | ||
| 44 | "intb", /* input timebase */ | ||
| 45 | "sr", /* sample rate */ | ||
| 46 | NULL | ||
| 47 | }; | ||
| 48 | |||
| 49 | enum var_name { | ||
| 50 | VAR_AVTB, | ||
| 51 | VAR_INTB, | ||
| 52 | VAR_SR, | ||
| 53 | VAR_VARS_NB | ||
| 54 | }; | ||
| 55 | |||
| 56 | typedef struct SetTBContext { | ||
| 57 | const AVClass *class; | ||
| 58 | char *tb_expr; | ||
| 59 | double var_values[VAR_VARS_NB]; | ||
| 60 | } SetTBContext; | ||
| 61 | |||
| 62 | #define OFFSET(x) offsetof(SetTBContext, x) | ||
| 63 | #define DEFINE_OPTIONS(filt_name, filt_type) \ | ||
| 64 | static const AVOption filt_name##_options[] = { \ | ||
| 65 | { "expr", "set expression determining the output timebase", OFFSET(tb_expr), AV_OPT_TYPE_STRING, {.str="intb"}, \ | ||
| 66 | .flags=AV_OPT_FLAG_##filt_type##_PARAM|AV_OPT_FLAG_FILTERING_PARAM }, \ | ||
| 67 | { "tb", "set expression determining the output timebase", OFFSET(tb_expr), AV_OPT_TYPE_STRING, {.str="intb"}, \ | ||
| 68 | .flags=AV_OPT_FLAG_##filt_type##_PARAM|AV_OPT_FLAG_FILTERING_PARAM }, \ | ||
| 69 | { NULL } \ | ||
| 70 | } | ||
| 71 | |||
| 72 | 1 | static int config_output_props(AVFilterLink *outlink) | |
| 73 | { | ||
| 74 | 1 | AVFilterContext *ctx = outlink->src; | |
| 75 | 1 | SetTBContext *settb = ctx->priv; | |
| 76 | 1 | AVFilterLink *inlink = ctx->inputs[0]; | |
| 77 | AVRational time_base; | ||
| 78 | int ret; | ||
| 79 | double res; | ||
| 80 | |||
| 81 | 1 | settb->var_values[VAR_AVTB] = av_q2d(AV_TIME_BASE_Q); | |
| 82 | 1 | settb->var_values[VAR_INTB] = av_q2d(inlink->time_base); | |
| 83 | 1 | settb->var_values[VAR_SR] = inlink->sample_rate; | |
| 84 | |||
| 85 | 1 | outlink->w = inlink->w; | |
| 86 | 1 | outlink->h = inlink->h; | |
| 87 | |||
| 88 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
|
1 | if ((ret = av_expr_parse_and_eval(&res, settb->tb_expr, var_names, settb->var_values, |
| 89 | NULL, NULL, NULL, NULL, NULL, 0, NULL)) < 0) { | ||
| 90 | ✗ | av_log(ctx, AV_LOG_ERROR, "Invalid expression '%s' for timebase.\n", settb->tb_expr); | |
| 91 | ✗ | return ret; | |
| 92 | } | ||
| 93 | 1 | time_base = av_d2q(res, INT_MAX); | |
| 94 |
2/4✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
|
1 | if (time_base.num <= 0 || time_base.den <= 0) { |
| 95 | ✗ | av_log(ctx, AV_LOG_ERROR, | |
| 96 | "Invalid non-positive values for the timebase num:%d or den:%d.\n", | ||
| 97 | time_base.num, time_base.den); | ||
| 98 | ✗ | return AVERROR(EINVAL); | |
| 99 | } | ||
| 100 | |||
| 101 | 1 | outlink->time_base = time_base; | |
| 102 | 1 | av_log(outlink->src, AV_LOG_VERBOSE, "tb:%d/%d -> tb:%d/%d\n", | |
| 103 | inlink ->time_base.num, inlink ->time_base.den, | ||
| 104 | outlink->time_base.num, outlink->time_base.den); | ||
| 105 | |||
| 106 | 1 | return 0; | |
| 107 | } | ||
| 108 | |||
| 109 | 51 | static int64_t rescale_pts(AVFilterLink *inlink, AVFilterLink *outlink, int64_t orig_pts) | |
| 110 | { | ||
| 111 | 51 | AVFilterContext *ctx = inlink->dst; | |
| 112 | 51 | int64_t new_pts = orig_pts; | |
| 113 | |||
| 114 |
1/2✓ Branch 1 taken 51 times.
✗ Branch 2 not taken.
|
51 | if (av_cmp_q(inlink->time_base, outlink->time_base)) { |
| 115 | 51 | new_pts = av_rescale_q(orig_pts, inlink->time_base, outlink->time_base); | |
| 116 | 51 | av_log(ctx, AV_LOG_DEBUG, "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n", | |
| 117 | inlink ->time_base.num, inlink ->time_base.den, orig_pts, | ||
| 118 | outlink->time_base.num, outlink->time_base.den, new_pts); | ||
| 119 | } | ||
| 120 | |||
| 121 | 51 | return new_pts; | |
| 122 | } | ||
| 123 | |||
| 124 | 50 | static int filter_frame(AVFilterLink *inlink, AVFrame *frame) | |
| 125 | { | ||
| 126 | 50 | AVFilterContext *ctx = inlink->dst; | |
| 127 | 50 | AVFilterLink *outlink = ctx->outputs[0]; | |
| 128 | |||
| 129 | 50 | frame->pts = rescale_pts(inlink, outlink, frame->pts); | |
| 130 | 50 | frame->duration = av_rescale_q(frame->duration, inlink->time_base, outlink->time_base); | |
| 131 | |||
| 132 | 50 | return ff_filter_frame(outlink, frame); | |
| 133 | } | ||
| 134 | |||
| 135 | 101 | static int activate(AVFilterContext *ctx) | |
| 136 | { | ||
| 137 | 101 | AVFilterLink *inlink = ctx->inputs[0]; | |
| 138 | 101 | AVFilterLink *outlink = ctx->outputs[0]; | |
| 139 | AVFrame *in; | ||
| 140 | int status; | ||
| 141 | int64_t pts; | ||
| 142 | int ret; | ||
| 143 | |||
| 144 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 101 times.
|
101 | FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink); |
| 145 | |||
| 146 | 101 | ret = ff_inlink_consume_frame(inlink, &in); | |
| 147 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 101 times.
|
101 | if (ret < 0) |
| 148 | ✗ | return ret; | |
| 149 |
2/2✓ Branch 0 taken 50 times.
✓ Branch 1 taken 51 times.
|
101 | if (ret > 0) |
| 150 | 50 | return filter_frame(inlink, in); | |
| 151 | |||
| 152 |
2/2✓ Branch 1 taken 1 times.
✓ Branch 2 taken 50 times.
|
51 | if (ff_inlink_acknowledge_status(inlink, &status, &pts)) { |
| 153 | 1 | ff_outlink_set_status(outlink, status, rescale_pts(inlink, outlink, pts)); | |
| 154 | 1 | return 0; | |
| 155 | } | ||
| 156 | |||
| 157 |
1/2✓ Branch 1 taken 50 times.
✗ Branch 2 not taken.
|
50 | FF_FILTER_FORWARD_WANTED(outlink, inlink); |
| 158 | |||
| 159 | ✗ | return FFERROR_NOT_READY; | |
| 160 | } | ||
| 161 | |||
| 162 | #if CONFIG_SETTB_FILTER | ||
| 163 | |||
| 164 | DEFINE_OPTIONS(settb, VIDEO); | ||
| 165 | AVFILTER_DEFINE_CLASS(settb); | ||
| 166 | |||
| 167 | static const AVFilterPad avfilter_vf_settb_outputs[] = { | ||
| 168 | { | ||
| 169 | .name = "default", | ||
| 170 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 171 | .config_props = config_output_props, | ||
| 172 | }, | ||
| 173 | }; | ||
| 174 | |||
| 175 | const AVFilter ff_vf_settb = { | ||
| 176 | .name = "settb", | ||
| 177 | .description = NULL_IF_CONFIG_SMALL("Set timebase for the video output link."), | ||
| 178 | .priv_size = sizeof(SetTBContext), | ||
| 179 | .priv_class = &settb_class, | ||
| 180 | FILTER_INPUTS(ff_video_default_filterpad), | ||
| 181 | FILTER_OUTPUTS(avfilter_vf_settb_outputs), | ||
| 182 | .activate = activate, | ||
| 183 | .flags = AVFILTER_FLAG_METADATA_ONLY, | ||
| 184 | }; | ||
| 185 | #endif /* CONFIG_SETTB_FILTER */ | ||
| 186 | |||
| 187 | #if CONFIG_ASETTB_FILTER | ||
| 188 | |||
| 189 | DEFINE_OPTIONS(asettb, AUDIO); | ||
| 190 | AVFILTER_DEFINE_CLASS(asettb); | ||
| 191 | |||
| 192 | static const AVFilterPad avfilter_af_asettb_outputs[] = { | ||
| 193 | { | ||
| 194 | .name = "default", | ||
| 195 | .type = AVMEDIA_TYPE_AUDIO, | ||
| 196 | .config_props = config_output_props, | ||
| 197 | }, | ||
| 198 | }; | ||
| 199 | |||
| 200 | const AVFilter ff_af_asettb = { | ||
| 201 | .name = "asettb", | ||
| 202 | .description = NULL_IF_CONFIG_SMALL("Set timebase for the audio output link."), | ||
| 203 | .priv_size = sizeof(SetTBContext), | ||
| 204 | FILTER_INPUTS(ff_audio_default_filterpad), | ||
| 205 | FILTER_OUTPUTS(avfilter_af_asettb_outputs), | ||
| 206 | .priv_class = &asettb_class, | ||
| 207 | .activate = activate, | ||
| 208 | .flags = AVFILTER_FLAG_METADATA_ONLY, | ||
| 209 | }; | ||
| 210 | #endif /* CONFIG_ASETTB_FILTER */ | ||
| 211 |