| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2021 Paul B Mahol | ||
| 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 | #include "config_components.h" | ||
| 22 | |||
| 23 | #include "audio.h" | ||
| 24 | #include "avfilter.h" | ||
| 25 | #include "filters.h" | ||
| 26 | #include "internal.h" | ||
| 27 | #include "video.h" | ||
| 28 | |||
| 29 | typedef struct LatencyContext { | ||
| 30 | int64_t min_latency; | ||
| 31 | int64_t max_latency; | ||
| 32 | int64_t sum; | ||
| 33 | } LatencyContext; | ||
| 34 | |||
| 35 | ✗ | static av_cold int init(AVFilterContext *ctx) | |
| 36 | { | ||
| 37 | ✗ | LatencyContext *s = ctx->priv; | |
| 38 | |||
| 39 | ✗ | s->min_latency = INT64_MAX; | |
| 40 | ✗ | s->max_latency = INT64_MIN; | |
| 41 | |||
| 42 | ✗ | return 0; | |
| 43 | } | ||
| 44 | |||
| 45 | ✗ | static int activate(AVFilterContext *ctx) | |
| 46 | { | ||
| 47 | ✗ | LatencyContext *s = ctx->priv; | |
| 48 | ✗ | AVFilterLink *inlink = ctx->inputs[0]; | |
| 49 | ✗ | AVFilterLink *outlink = ctx->outputs[0]; | |
| 50 | |||
| 51 | ✗ | FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink); | |
| 52 | |||
| 53 | ✗ | if (!ctx->is_disabled && ctx->inputs[0]->src && | |
| 54 | ✗ | ctx->inputs[0]->src->nb_inputs > 0) { | |
| 55 | ✗ | AVFilterLink *prevlink = ctx->inputs[0]->src->inputs[0]; | |
| 56 | ✗ | int64_t delta = 0; | |
| 57 | |||
| 58 | ✗ | switch (prevlink->type) { | |
| 59 | ✗ | case AVMEDIA_TYPE_AUDIO: | |
| 60 | ✗ | delta = prevlink->sample_count_in - inlink->sample_count_out; | |
| 61 | ✗ | break; | |
| 62 | ✗ | case AVMEDIA_TYPE_VIDEO: | |
| 63 | ✗ | delta = prevlink->frame_count_in - inlink->frame_count_out; | |
| 64 | ✗ | break; | |
| 65 | } | ||
| 66 | |||
| 67 | ✗ | if (delta > 0) { | |
| 68 | ✗ | s->min_latency = FFMIN(s->min_latency, delta); | |
| 69 | ✗ | s->max_latency = FFMAX(s->max_latency, delta); | |
| 70 | } | ||
| 71 | } | ||
| 72 | |||
| 73 | ✗ | if (ff_inlink_queued_frames(inlink)) { | |
| 74 | ✗ | AVFrame *frame = NULL; | |
| 75 | int ret; | ||
| 76 | |||
| 77 | ✗ | ret = ff_inlink_consume_frame(inlink, &frame); | |
| 78 | ✗ | if (ret < 0) | |
| 79 | ✗ | return ret; | |
| 80 | ✗ | if (ret > 0) | |
| 81 | ✗ | return ff_filter_frame(outlink, frame); | |
| 82 | } | ||
| 83 | |||
| 84 | ✗ | FF_FILTER_FORWARD_STATUS(inlink, outlink); | |
| 85 | ✗ | FF_FILTER_FORWARD_WANTED(outlink, inlink); | |
| 86 | |||
| 87 | ✗ | return FFERROR_NOT_READY; | |
| 88 | } | ||
| 89 | |||
| 90 | ✗ | static av_cold void uninit(AVFilterContext *ctx) | |
| 91 | { | ||
| 92 | ✗ | LatencyContext *s = ctx->priv; | |
| 93 | |||
| 94 | ✗ | if (s->min_latency != INT64_MAX) | |
| 95 | ✗ | av_log(ctx, AV_LOG_INFO, "Min latency: %"PRId64"\n", s->min_latency); | |
| 96 | ✗ | if (s->max_latency != INT64_MIN) | |
| 97 | ✗ | av_log(ctx, AV_LOG_INFO, "Max latency: %"PRId64"\n", s->max_latency); | |
| 98 | ✗ | } | |
| 99 | |||
| 100 | #if CONFIG_LATENCY_FILTER | ||
| 101 | |||
| 102 | const AVFilter ff_vf_latency = { | ||
| 103 | .name = "latency", | ||
| 104 | .description = NULL_IF_CONFIG_SMALL("Report video filtering latency."), | ||
| 105 | .priv_size = sizeof(LatencyContext), | ||
| 106 | .init = init, | ||
| 107 | .uninit = uninit, | ||
| 108 | .activate = activate, | ||
| 109 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | | ||
| 110 | AVFILTER_FLAG_METADATA_ONLY, | ||
| 111 | FILTER_INPUTS(ff_video_default_filterpad), | ||
| 112 | FILTER_OUTPUTS(ff_video_default_filterpad), | ||
| 113 | }; | ||
| 114 | |||
| 115 | #endif // CONFIG_LATENCY_FILTER | ||
| 116 | |||
| 117 | #if CONFIG_ALATENCY_FILTER | ||
| 118 | |||
| 119 | const AVFilter ff_af_alatency = { | ||
| 120 | .name = "alatency", | ||
| 121 | .description = NULL_IF_CONFIG_SMALL("Report audio filtering latency."), | ||
| 122 | .priv_size = sizeof(LatencyContext), | ||
| 123 | .init = init, | ||
| 124 | .uninit = uninit, | ||
| 125 | .activate = activate, | ||
| 126 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, | ||
| 127 | FILTER_INPUTS(ff_audio_default_filterpad), | ||
| 128 | FILTER_OUTPUTS(ff_audio_default_filterpad), | ||
| 129 | }; | ||
| 130 | #endif // CONFIG_ALATENCY_FILTER | ||
| 131 |