| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #include "libavutil/buffer.h" | ||
| 20 | #include "libavutil/hwcontext.h" | ||
| 21 | #include "libavutil/log.h" | ||
| 22 | #include "libavutil/mem.h" | ||
| 23 | #include "libavutil/opt.h" | ||
| 24 | #include "libavutil/pixdesc.h" | ||
| 25 | |||
| 26 | #include "avfilter.h" | ||
| 27 | #include "filters.h" | ||
| 28 | #include "formats.h" | ||
| 29 | #include "video.h" | ||
| 30 | |||
| 31 | typedef struct HWDownloadContext { | ||
| 32 | const AVClass *class; | ||
| 33 | |||
| 34 | AVBufferRef *hwframes_ref; | ||
| 35 | AVHWFramesContext *hwframes; | ||
| 36 | } HWDownloadContext; | ||
| 37 | |||
| 38 | ✗ | static int hwdownload_query_formats(const AVFilterContext *avctx, | |
| 39 | AVFilterFormatsConfig **cfg_in, | ||
| 40 | AVFilterFormatsConfig **cfg_out) | ||
| 41 | { | ||
| 42 | int err; | ||
| 43 | |||
| 44 | ✗ | if ((err = ff_formats_ref(ff_formats_pixdesc_filter(AV_PIX_FMT_FLAG_HWACCEL, 0), | |
| 45 | ✗ | &cfg_in[0]->formats)) || | |
| 46 | ✗ | (err = ff_formats_ref(ff_formats_pixdesc_filter(0, AV_PIX_FMT_FLAG_HWACCEL), | |
| 47 | ✗ | &cfg_out[0]->formats))) | |
| 48 | ✗ | return err; | |
| 49 | |||
| 50 | ✗ | return 0; | |
| 51 | } | ||
| 52 | |||
| 53 | ✗ | static int hwdownload_config_input(AVFilterLink *inlink) | |
| 54 | { | ||
| 55 | ✗ | FilterLink *l = ff_filter_link(inlink); | |
| 56 | ✗ | AVFilterContext *avctx = inlink->dst; | |
| 57 | ✗ | HWDownloadContext *ctx = avctx->priv; | |
| 58 | |||
| 59 | ✗ | av_buffer_unref(&ctx->hwframes_ref); | |
| 60 | |||
| 61 | ✗ | if (!l->hw_frames_ctx) { | |
| 62 | ✗ | av_log(ctx, AV_LOG_ERROR, "The input must have a hardware frame " | |
| 63 | "reference.\n"); | ||
| 64 | ✗ | return AVERROR(EINVAL); | |
| 65 | } | ||
| 66 | |||
| 67 | ✗ | ctx->hwframes_ref = av_buffer_ref(l->hw_frames_ctx); | |
| 68 | ✗ | if (!ctx->hwframes_ref) | |
| 69 | ✗ | return AVERROR(ENOMEM); | |
| 70 | |||
| 71 | ✗ | ctx->hwframes = (AVHWFramesContext*)ctx->hwframes_ref->data; | |
| 72 | |||
| 73 | ✗ | return 0; | |
| 74 | } | ||
| 75 | |||
| 76 | ✗ | static int hwdownload_config_output(AVFilterLink *outlink) | |
| 77 | { | ||
| 78 | ✗ | AVFilterContext *avctx = outlink->src; | |
| 79 | ✗ | AVFilterLink *inlink = avctx->inputs[0]; | |
| 80 | ✗ | HWDownloadContext *ctx = avctx->priv; | |
| 81 | enum AVPixelFormat *formats; | ||
| 82 | int err, i, found; | ||
| 83 | |||
| 84 | ✗ | if (!ctx->hwframes_ref) | |
| 85 | ✗ | return AVERROR(EINVAL); | |
| 86 | |||
| 87 | ✗ | err = av_hwframe_transfer_get_formats(ctx->hwframes_ref, | |
| 88 | AV_HWFRAME_TRANSFER_DIRECTION_FROM, | ||
| 89 | &formats, 0); | ||
| 90 | ✗ | if (err < 0) | |
| 91 | ✗ | return err; | |
| 92 | |||
| 93 | ✗ | found = 0; | |
| 94 | ✗ | for (i = 0; formats[i] != AV_PIX_FMT_NONE; i++) { | |
| 95 | ✗ | if (formats[i] == outlink->format) { | |
| 96 | ✗ | found = 1; | |
| 97 | ✗ | break; | |
| 98 | } | ||
| 99 | } | ||
| 100 | ✗ | av_freep(&formats); | |
| 101 | |||
| 102 | ✗ | if (!found) { | |
| 103 | ✗ | av_log(ctx, AV_LOG_ERROR, "Invalid output format %s for hwframe " | |
| 104 | ✗ | "download.\n", av_get_pix_fmt_name(outlink->format)); | |
| 105 | ✗ | return AVERROR(EINVAL); | |
| 106 | } | ||
| 107 | |||
| 108 | ✗ | outlink->w = inlink->w; | |
| 109 | ✗ | outlink->h = inlink->h; | |
| 110 | |||
| 111 | ✗ | return 0; | |
| 112 | } | ||
| 113 | |||
| 114 | ✗ | static int hwdownload_filter_frame(AVFilterLink *link, AVFrame *input) | |
| 115 | { | ||
| 116 | ✗ | AVFilterContext *avctx = link->dst; | |
| 117 | ✗ | AVFilterLink *outlink = avctx->outputs[0]; | |
| 118 | ✗ | HWDownloadContext *ctx = avctx->priv; | |
| 119 | ✗ | AVFrame *output = NULL; | |
| 120 | int err; | ||
| 121 | |||
| 122 | ✗ | if (!ctx->hwframes_ref || !input->hw_frames_ctx) { | |
| 123 | ✗ | av_log(ctx, AV_LOG_ERROR, "Input frames must have hardware context.\n"); | |
| 124 | ✗ | err = AVERROR(EINVAL); | |
| 125 | ✗ | goto fail; | |
| 126 | } | ||
| 127 | ✗ | if ((void*)ctx->hwframes != input->hw_frames_ctx->data) { | |
| 128 | ✗ | av_log(ctx, AV_LOG_ERROR, "Input frame is not the in the configured " | |
| 129 | "hwframe context.\n"); | ||
| 130 | ✗ | err = AVERROR(EINVAL); | |
| 131 | ✗ | goto fail; | |
| 132 | } | ||
| 133 | |||
| 134 | ✗ | output = ff_get_video_buffer(outlink, ctx->hwframes->width, | |
| 135 | ✗ | ctx->hwframes->height); | |
| 136 | ✗ | if (!output) { | |
| 137 | ✗ | err = AVERROR(ENOMEM); | |
| 138 | ✗ | goto fail; | |
| 139 | } | ||
| 140 | |||
| 141 | ✗ | err = av_hwframe_transfer_data(output, input, 0); | |
| 142 | ✗ | if (err < 0) { | |
| 143 | ✗ | av_log(ctx, AV_LOG_ERROR, "Failed to download frame: %d.\n", err); | |
| 144 | ✗ | goto fail; | |
| 145 | } | ||
| 146 | |||
| 147 | ✗ | output->width = outlink->w; | |
| 148 | ✗ | output->height = outlink->h; | |
| 149 | |||
| 150 | ✗ | err = av_frame_copy_props(output, input); | |
| 151 | ✗ | if (err < 0) | |
| 152 | ✗ | goto fail; | |
| 153 | |||
| 154 | ✗ | av_frame_free(&input); | |
| 155 | |||
| 156 | ✗ | return ff_filter_frame(avctx->outputs[0], output); | |
| 157 | |||
| 158 | ✗ | fail: | |
| 159 | ✗ | av_frame_free(&input); | |
| 160 | ✗ | av_frame_free(&output); | |
| 161 | ✗ | return err; | |
| 162 | } | ||
| 163 | |||
| 164 | ✗ | static av_cold void hwdownload_uninit(AVFilterContext *avctx) | |
| 165 | { | ||
| 166 | ✗ | HWDownloadContext *ctx = avctx->priv; | |
| 167 | |||
| 168 | ✗ | av_buffer_unref(&ctx->hwframes_ref); | |
| 169 | ✗ | } | |
| 170 | |||
| 171 | static const AVClass hwdownload_class = { | ||
| 172 | .class_name = "hwdownload", | ||
| 173 | .item_name = av_default_item_name, | ||
| 174 | .option = NULL, | ||
| 175 | .version = LIBAVUTIL_VERSION_INT, | ||
| 176 | }; | ||
| 177 | |||
| 178 | static const AVFilterPad hwdownload_inputs[] = { | ||
| 179 | { | ||
| 180 | .name = "default", | ||
| 181 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 182 | .config_props = hwdownload_config_input, | ||
| 183 | .filter_frame = hwdownload_filter_frame, | ||
| 184 | }, | ||
| 185 | }; | ||
| 186 | |||
| 187 | static const AVFilterPad hwdownload_outputs[] = { | ||
| 188 | { | ||
| 189 | .name = "default", | ||
| 190 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 191 | .config_props = hwdownload_config_output, | ||
| 192 | }, | ||
| 193 | }; | ||
| 194 | |||
| 195 | const AVFilter ff_vf_hwdownload = { | ||
| 196 | .name = "hwdownload", | ||
| 197 | .description = NULL_IF_CONFIG_SMALL("Download a hardware frame to a normal frame"), | ||
| 198 | .uninit = hwdownload_uninit, | ||
| 199 | .priv_size = sizeof(HWDownloadContext), | ||
| 200 | .priv_class = &hwdownload_class, | ||
| 201 | FILTER_INPUTS(hwdownload_inputs), | ||
| 202 | FILTER_OUTPUTS(hwdownload_outputs), | ||
| 203 | FILTER_QUERY_FUNC2(hwdownload_query_formats), | ||
| 204 | .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, | ||
| 205 | }; | ||
| 206 |