GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/av1_metadata_bsf.c Lines: 70 140 50.0 %
Date: 2020-11-28 20:53:16 Branches: 32 96 33.3 %

Line Branch Exec Source
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/*
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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19
#include "libavutil/common.h"
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#include "libavutil/opt.h"
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22
#include "bsf.h"
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#include "bsf_internal.h"
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#include "cbs.h"
25
#include "cbs_av1.h"
26
27
enum {
28
    PASS,
29
    INSERT,
30
    REMOVE,
31
};
32
33
typedef struct AV1MetadataContext {
34
    const AVClass *class;
35
36
    CodedBitstreamContext *input;
37
    CodedBitstreamContext *output;
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    CodedBitstreamFragment access_unit;
39
40
    int td;
41
42
    int color_primaries;
43
    int transfer_characteristics;
44
    int matrix_coefficients;
45
46
    int color_range;
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    int chroma_sample_position;
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49
    AVRational tick_rate;
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    int num_ticks_per_picture;
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52
    int delete_padding;
53
} AV1MetadataContext;
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55
56
142
static int av1_metadata_update_sequence_header(AVBSFContext *bsf,
57
                                               AV1RawSequenceHeader *seq)
58
{
59
142
    AV1MetadataContext *ctx = bsf->priv_data;
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142
    AV1RawColorConfig  *clc = &seq->color_config;
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142
    AV1RawTimingInfo   *tim = &seq->timing_info;
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63
142
    if (ctx->color_primaries >= 0          ||
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142
        ctx->transfer_characteristics >= 0 ||
65
142
        ctx->matrix_coefficients >= 0) {
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        clc->color_description_present_flag = 1;
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68
        if (ctx->color_primaries >= 0)
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            clc->color_primaries = ctx->color_primaries;
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        if (ctx->transfer_characteristics >= 0)
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            clc->transfer_characteristics = ctx->transfer_characteristics;
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        if (ctx->matrix_coefficients >= 0)
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            clc->matrix_coefficients = ctx->matrix_coefficients;
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    }
75
76
142
    if (ctx->color_range >= 0) {
77
        if (clc->color_primaries          == AVCOL_PRI_BT709        &&
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            clc->transfer_characteristics == AVCOL_TRC_IEC61966_2_1 &&
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            clc->matrix_coefficients      == AVCOL_SPC_RGB) {
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            av_log(bsf, AV_LOG_WARNING, "Warning: color_range cannot be set "
81
                   "on RGB streams encoded in BT.709 sRGB.\n");
82
        } else {
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            clc->color_range = ctx->color_range;
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        }
85
    }
86
87
142
    if (ctx->chroma_sample_position >= 0) {
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        if (clc->mono_chrome || !clc->subsampling_x || !clc->subsampling_y) {
89
            av_log(bsf, AV_LOG_WARNING, "Warning: chroma_sample_position "
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                   "can only be set for 4:2:0 streams.\n");
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        } else {
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            clc->chroma_sample_position = ctx->chroma_sample_position;
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        }
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    }
95
96

142
    if (ctx->tick_rate.num && ctx->tick_rate.den) {
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        int num, den;
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99
        av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
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                  UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
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102
        tim->time_scale                = num;
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        tim->num_units_in_display_tick = den;
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        seq->timing_info_present_flag  = 1;
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106
        if (ctx->num_ticks_per_picture > 0) {
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            tim->equal_picture_interval = 1;
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            tim->num_ticks_per_picture_minus_1 =
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                ctx->num_ticks_per_picture - 1;
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        }
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    }
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113
142
    return 0;
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}
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116
327
static int av1_metadata_update_side_data(AVBSFContext *bsf, AVPacket *pkt)
117
{
118
327
    AV1MetadataContext *ctx = bsf->priv_data;
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327
    CodedBitstreamFragment *frag = &ctx->access_unit;
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    uint8_t *side_data;
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    int side_data_size;
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    int err, i;
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124
327
    side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
125
                                        &side_data_size);
126
327
    if (!side_data_size)
127
327
        return 0;
128
129
    err = ff_cbs_read(ctx->input, frag, side_data, side_data_size);
130
    if (err < 0) {
131
        av_log(bsf, AV_LOG_ERROR, "Failed to read extradata from packet side data.\n");
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        return err;
133
    }
134
135
    for (i = 0; i < frag->nb_units; i++) {
136
        if (frag->units[i].type == AV1_OBU_SEQUENCE_HEADER) {
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            AV1RawOBU *obu = frag->units[i].content;
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            err = av1_metadata_update_sequence_header(bsf, &obu->obu.sequence_header);
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            if (err < 0)
140
                return err;
141
        }
142
    }
143
144
    err = ff_cbs_write_fragment_data(ctx->output, frag);
145
    if (err < 0) {
146
        av_log(bsf, AV_LOG_ERROR, "Failed to write extradata into packet side data.\n");
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        return err;
148
    }
149
150
    side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, frag->data_size);
151
    if (!side_data)
152
        return AVERROR(ENOMEM);
153
    memcpy(side_data, frag->data, frag->data_size);
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155
    ff_cbs_fragment_reset(frag);
156
157
    return 0;
158
}
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160
654
static int av1_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
161
{
162
654
    AV1MetadataContext *ctx = bsf->priv_data;
163
654
    CodedBitstreamFragment *frag = &ctx->access_unit;
164
    AV1RawOBU td, *obu;
165
    int err, i;
166
167
654
    err = ff_bsf_get_packet_ref(bsf, pkt);
168
654
    if (err < 0)
169
327
        return err;
170
171
327
    err = av1_metadata_update_side_data(bsf, pkt);
172
327
    if (err < 0)
173
        goto fail;
174
175
327
    err = ff_cbs_read_packet(ctx->input, frag, pkt);
176
327
    if (err < 0) {
177
        av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
178
        goto fail;
179
    }
180
181
327
    if (frag->nb_units == 0) {
182
        av_log(bsf, AV_LOG_ERROR, "No OBU in packet.\n");
183
        err = AVERROR_INVALIDDATA;
184
        goto fail;
185
    }
186
187
1302
    for (i = 0; i < frag->nb_units; i++) {
188
975
        if (frag->units[i].type == AV1_OBU_SEQUENCE_HEADER) {
189
126
            obu = frag->units[i].content;
190
126
            err = av1_metadata_update_sequence_header(bsf, &obu->obu.sequence_header);
191
126
            if (err < 0)
192
                goto fail;
193
        }
194
    }
195
196
    // If a Temporal Delimiter is present, it must be the first OBU.
197
327
    if (frag->units[0].type == AV1_OBU_TEMPORAL_DELIMITER) {
198
327
        if (ctx->td == REMOVE)
199
            ff_cbs_delete_unit(frag, 0);
200
    } else if (ctx->td == INSERT) {
201
        td = (AV1RawOBU) {
202
            .header.obu_type = AV1_OBU_TEMPORAL_DELIMITER,
203
        };
204
205
        err = ff_cbs_insert_unit_content(frag, 0, AV1_OBU_TEMPORAL_DELIMITER,
206
                                         &td, NULL);
207
        if (err < 0) {
208
            av_log(bsf, AV_LOG_ERROR, "Failed to insert Temporal Delimiter.\n");
209
            goto fail;
210
        }
211
    }
212
213
327
    if (ctx->delete_padding) {
214
        for (i = frag->nb_units - 1; i >= 0; i--) {
215
            if (frag->units[i].type == AV1_OBU_PADDING)
216
                ff_cbs_delete_unit(frag, i);
217
        }
218
    }
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220
327
    err = ff_cbs_write_packet(ctx->output, pkt, frag);
221
327
    if (err < 0) {
222
        av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
223
        goto fail;
224
    }
225
226
327
    err = 0;
227
327
fail:
228
327
    ff_cbs_fragment_reset(frag);
229
230
327
    if (err < 0)
231
        av_packet_unref(pkt);
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233
327
    return err;
234
}
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static int av1_metadata_init(AVBSFContext *bsf)
237
{
238
16
    AV1MetadataContext *ctx = bsf->priv_data;
239
16
    CodedBitstreamFragment *frag = &ctx->access_unit;
240
    AV1RawOBU *obu;
241
    int err, i;
242
243
16
    err = ff_cbs_init(&ctx->input, AV_CODEC_ID_AV1, bsf);
244
16
    if (err < 0)
245
        return err;
246
16
    err = ff_cbs_init(&ctx->output, AV_CODEC_ID_AV1, bsf);
247
16
    if (err < 0)
248
        return err;
249
250
16
    if (bsf->par_in->extradata) {
251
16
        err = ff_cbs_read_extradata(ctx->input, frag, bsf->par_in);
252
16
        if (err < 0) {
253
            av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
254
            goto fail;
255
        }
256
257
36
        for (i = 0; i < frag->nb_units; i++) {
258
20
            if (frag->units[i].type == AV1_OBU_SEQUENCE_HEADER) {
259
16
                obu = frag->units[i].content;
260
16
                err = av1_metadata_update_sequence_header(bsf, &obu->obu.sequence_header);
261
16
                if (err < 0)
262
                    goto fail;
263
            }
264
        }
265
266
16
        err = ff_cbs_write_extradata(ctx->output, bsf->par_out, frag);
267
16
        if (err < 0) {
268
            av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
269
            goto fail;
270
        }
271
    }
272
273
16
    err = 0;
274
16
fail:
275
16
    ff_cbs_fragment_reset(frag);
276
16
    return err;
277
}
278
279
16
static void av1_metadata_close(AVBSFContext *bsf)
280
{
281
16
    AV1MetadataContext *ctx = bsf->priv_data;
282
283
16
    ff_cbs_fragment_free(&ctx->access_unit);
284
16
    ff_cbs_close(&ctx->input);
285
16
    ff_cbs_close(&ctx->output);
286
16
}
287
288
#define OFFSET(x) offsetof(AV1MetadataContext, x)
289
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
290
static const AVOption av1_metadata_options[] = {
291
    { "td", "Temporal Delimiter OBU",
292
        OFFSET(td), AV_OPT_TYPE_INT,
293
        { .i64 = PASS }, PASS, REMOVE, FLAGS, "td" },
294
    { "pass",   NULL, 0, AV_OPT_TYPE_CONST,
295
        { .i64 = PASS   }, .flags = FLAGS, .unit = "td" },
296
    { "insert", NULL, 0, AV_OPT_TYPE_CONST,
297
        { .i64 = INSERT }, .flags = FLAGS, .unit = "td" },
298
    { "remove", NULL, 0, AV_OPT_TYPE_CONST,
299
        { .i64 = REMOVE }, .flags = FLAGS, .unit = "td" },
300
301
    { "color_primaries", "Set color primaries (section 6.4.2)",
302
        OFFSET(color_primaries), AV_OPT_TYPE_INT,
303
        { .i64 = -1 }, -1, 255, FLAGS },
304
    { "transfer_characteristics", "Set transfer characteristics (section 6.4.2)",
305
        OFFSET(transfer_characteristics), AV_OPT_TYPE_INT,
306
        { .i64 = -1 }, -1, 255, FLAGS },
307
    { "matrix_coefficients", "Set matrix coefficients (section 6.4.2)",
308
        OFFSET(matrix_coefficients), AV_OPT_TYPE_INT,
309
        { .i64 = -1 }, -1, 255, FLAGS },
310
311
    { "color_range", "Set color range flag (section 6.4.2)",
312
        OFFSET(color_range), AV_OPT_TYPE_INT,
313
        { .i64 = -1 }, -1, 1, FLAGS, "cr" },
314
    { "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST,
315
        { .i64 = 0 }, .flags = FLAGS, .unit = "cr" },
316
    { "pc", "PC (full) range",    0, AV_OPT_TYPE_CONST,
317
        { .i64 = 1 }, .flags = FLAGS, .unit = "cr" },
318
319
    { "chroma_sample_position", "Set chroma sample position (section 6.4.2)",
320
        OFFSET(chroma_sample_position), AV_OPT_TYPE_INT,
321
        { .i64 = -1 }, -1, 3, FLAGS, "csp" },
322
    { "unknown",   "Unknown chroma sample position",  0, AV_OPT_TYPE_CONST,
323
        { .i64 = AV1_CSP_UNKNOWN },   .flags = FLAGS, .unit = "csp" },
324
    { "vertical",  "Left chroma sample position",     0, AV_OPT_TYPE_CONST,
325
        { .i64 = AV1_CSP_VERTICAL },  .flags = FLAGS, .unit = "csp" },
326
    { "colocated", "Top-left chroma sample position", 0, AV_OPT_TYPE_CONST,
327
        { .i64 = AV1_CSP_COLOCATED }, .flags = FLAGS, .unit = "csp" },
328
329
    { "tick_rate", "Set display tick rate (num_units_in_display_tick / time_scale)",
330
        OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL,
331
        { .dbl = 0.0 }, 0, UINT_MAX, FLAGS },
332
    { "num_ticks_per_picture", "Set display ticks per picture for CFR streams",
333
        OFFSET(num_ticks_per_picture), AV_OPT_TYPE_INT,
334
        { .i64 = -1 }, -1, INT_MAX, FLAGS },
335
336
    { "delete_padding", "Delete all Padding OBUs",
337
        OFFSET(delete_padding), AV_OPT_TYPE_BOOL,
338
        { .i64 = 0 }, 0, 1, FLAGS},
339
340
    { NULL }
341
};
342
343
static const AVClass av1_metadata_class = {
344
    .class_name = "av1_metadata_bsf",
345
    .item_name  = av_default_item_name,
346
    .option     = av1_metadata_options,
347
    .version    = LIBAVUTIL_VERSION_INT,
348
};
349
350
static const enum AVCodecID av1_metadata_codec_ids[] = {
351
    AV_CODEC_ID_AV1, AV_CODEC_ID_NONE,
352
};
353
354
const AVBitStreamFilter ff_av1_metadata_bsf = {
355
    .name           = "av1_metadata",
356
    .priv_data_size = sizeof(AV1MetadataContext),
357
    .priv_class     = &av1_metadata_class,
358
    .init           = &av1_metadata_init,
359
    .close          = &av1_metadata_close,
360
    .filter         = &av1_metadata_filter,
361
    .codec_ids      = av1_metadata_codec_ids,
362
};