FFmpeg coverage

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/common.h"
20			#include "libavutil/mem.h"
21			#include "libavutil/opt.h"
22
23			#include "bsf.h"
24			#include "bsf_internal.h"
25			#include "cbs.h"
26			#include "cbs_bsf.h"
27			#include "cbs_av1.h"
28			#include "cbs_h265.h"
29			#include "dovi_rpu.h"
30			#include "h2645data.h"
31			#include "h265_profile_level.h"
32			#include "itut35.h"
33
34			#include "hevc/hevc.h"
35
36			typedef struct DoviRpuContext {
37			CBSBSFContext common;
38			DOVIContext dec;
39			DOVIContext enc;
40
41			int strip;
42			int compression;
43			} DoviRpuContext;
44
45		✗	static int update_rpu(AVBSFContext *bsf, const AVPacket *pkt, int flags,
46			const uint8_t *rpu, size_t rpu_size,
47			uint8_t **out_rpu, int *out_size)
48			{
49		✗	DoviRpuContext *s = bsf->priv_data;
50		✗	AVDOVIMetadata *metadata = NULL;
51			int ret;
52
53		✗	ret = ff_dovi_rpu_parse(&s->dec, rpu, rpu_size, 0);
54		✗	if (ret < 0) {
55		✗	ff_dovi_ctx_flush(&s->dec);
56		✗	return ret;
57			}
58
59		✗	ret = ff_dovi_get_metadata(&s->dec, &metadata);
60		✗	if (ret == 0 /* no metadata */) {
61		✗	*out_rpu = NULL;
62		✗	*out_size = 0;
63		✗	return 0;
64		✗	} else if (ret < 0) {
65		✗	ff_dovi_ctx_flush(&s->dec);
66		✗	return ret;
67			}
68
69		✗	if (pkt && !(pkt->flags & AV_PKT_FLAG_KEY))
70		✗	flags |= FF_DOVI_COMPRESS_RPU;
71		✗	ret = ff_dovi_rpu_generate(&s->enc, metadata, flags, out_rpu, out_size);
72		✗	av_free(metadata);
73		✗	if (ret < 0)
74		✗	ff_dovi_ctx_flush(&s->enc);
75
76		✗	return ret;
77			}
78
79		✗	static int dovi_rpu_update_fragment_hevc(AVBSFContext *bsf, AVPacket *pkt,
80			CodedBitstreamFragment *au)
81			{
82		✗	DoviRpuContext *s = bsf->priv_data;
83		✗	CodedBitstreamUnit *nal = au->nb_units ? &au->units[au->nb_units - 1] : NULL;
84		✗	uint8_t *rpu = NULL;
85			int rpu_size, ret;
86
87			// HEVC_NAL_UNSPEC62 is Dolby Vision PRU and HEVC_NAL_UNSPEC63 is Dolby Vision EL
88		✗	if (!nal || (nal->type != HEVC_NAL_UNSPEC62 && nal->type != HEVC_NAL_UNSPEC63))
89		✗	return 0;
90
91		✗	if (s->strip) {
92		✗	ff_cbs_delete_unit(au, au->nb_units - 1);
93		✗	return 0;
94			}
95
96		✗	if (nal->type == HEVC_NAL_UNSPEC63)
97		✗	return 0;
98
99		✗	ret = update_rpu(bsf, pkt, 0, nal->data + 2, nal->data_size - 2, &rpu, &rpu_size);
100		✗	if (ret < 0)
101		✗	return ret;
102
103			/* NAL unit header + NAL prefix */
104		✗	if (rpu_size + 3 <= nal->data_size && av_buffer_is_writable(nal->data_ref)) {
105		✗	memcpy(nal->data + 3, rpu, rpu_size);
106		✗	av_free(rpu);
107		✗	nal->data_size = rpu_size + 3;
108			} else {
109		✗	AVBufferRef *ref = av_buffer_alloc(rpu_size + 3);
110		✗	if (!ref) {
111		✗	av_free(rpu);
112		✗	return AVERROR(ENOMEM);
113			}
114
115		✗	memcpy(ref->data, nal->data, 3);
116		✗	memcpy(ref->data + 3, rpu, rpu_size);
117		✗	av_buffer_unref(&nal->data_ref);
118		✗	av_free(rpu);
119		✗	nal->data = ref->data;
120		✗	nal->data_size = rpu_size + 3;
121		✗	nal->data_ref = ref;
122		✗	nal->data_bit_padding = 0;
123			}
124
125		✗	return 0;
126			}
127
128		✗	static int dovi_rpu_update_fragment_av1(AVBSFContext *bsf, AVPacket *pkt,
129			CodedBitstreamFragment *frag)
130			{
131		✗	DoviRpuContext *s = bsf->priv_data;
132			int provider_code, provider_oriented_code, rpu_size, ret;
133			AVBufferRef *ref;
134			uint8_t *rpu;
135
136		✗	for (int i = 0; i < frag->nb_units; i++) {
137		✗	AV1RawOBU *obu = frag->units[i].content;
138		✗	AV1RawMetadataITUTT35 *t35 = &obu->obu.metadata.metadata.itut_t35;
139		✗	if (frag->units[i].type != AV1_OBU_METADATA ||
140		✗	obu->obu.metadata.metadata_type != AV1_METADATA_TYPE_ITUT_T35 ||
141		✗	t35->itu_t_t35_country_code != ITU_T_T35_COUNTRY_CODE_US ||
142		✗	t35->payload_size < 6)
143		✗	continue;
144
145		✗	provider_code = AV_RB16(t35->payload);
146		✗	provider_oriented_code = AV_RB32(t35->payload + 2);
147		✗	if (provider_code != ITU_T_T35_PROVIDER_CODE_DOLBY ||
148			provider_oriented_code != 0x800)
149		✗	continue;
150
151		✗	if (s->strip) {
152		✗	ff_cbs_delete_unit(frag, i);
153		✗	return 0;
154			}
155
156		✗	ret = update_rpu(bsf, pkt, FF_DOVI_WRAP_T35,
157		✗	t35->payload + 6, t35->payload_size - 6,
158			&rpu, &rpu_size);
159		✗	if (ret < 0)
160		✗	return ret;
161
162		✗	ref = av_buffer_create(rpu, rpu_size, av_buffer_default_free, NULL, 0);
163		✗	if (!ref) {
164		✗	av_free(rpu);
165		✗	return AVERROR(ENOMEM);
166			}
167
168		✗	av_buffer_unref(&t35->payload_ref);
169		✗	t35->payload_ref = ref;
170		✗	t35->payload = rpu + 1; /* skip country code */
171		✗	t35->payload_size = rpu_size - 1;
172		✗	break; /* should be only one RPU per packet */
173			}
174
175		✗	return 0;
176			}
177
178			static const CBSBSFType dovi_rpu_hevc_type = {
179			.codec_id = AV_CODEC_ID_HEVC,
180			.fragment_name = "access unit",
181			.unit_name = "NAL unit",
182			.update_fragment = &dovi_rpu_update_fragment_hevc,
183			};
184
185			static const CBSBSFType dovi_rpu_av1_type = {
186			.codec_id = AV_CODEC_ID_AV1,
187			.fragment_name = "temporal unit",
188			.unit_name = "OBU",
189			.update_fragment = &dovi_rpu_update_fragment_av1,
190			};
191
192		✗	static int dovi_rpu_init(AVBSFContext *bsf)
193			{
194			int ret;
195		✗	DoviRpuContext *s = bsf->priv_data;
196		✗	s->dec.logctx = s->enc.logctx = bsf;
197		✗	s->enc.enable = 1;
198
199		✗	if (s->compression == AV_DOVI_COMPRESSION_RESERVED) {
200		✗	av_log(bsf, AV_LOG_ERROR, "Invalid compression level: %d\n", s->compression);
201		✗	return AVERROR(EINVAL);
202			}
203
204		✗	if (s->strip) {
205		✗	av_packet_side_data_remove(bsf->par_out->coded_side_data,
206		✗	&bsf->par_out->nb_coded_side_data,
207			AV_PKT_DATA_DOVI_CONF);
208			} else {
209			const AVPacketSideData *sd;
210		✗	sd = av_packet_side_data_get(bsf->par_out->coded_side_data,
211		✗	bsf->par_out->nb_coded_side_data,
212			AV_PKT_DATA_DOVI_CONF);
213
214		✗	if (sd) {
215			AVDOVIDecoderConfigurationRecord *cfg;
216		✗	cfg = (AVDOVIDecoderConfigurationRecord *) sd->data;
217		✗	s->dec.cfg = *cfg;
218
219			/* Update configuration record before setting to enc ctx */
220		✗	cfg->dv_md_compression = s->compression;
221		✗	if (s->compression && s->dec.cfg.dv_profile < 8) {
222		✗	av_log(bsf, AV_LOG_ERROR, "Invalid compression level %d for "
223		✗	"Dolby Vision profile %d.\n", s->compression, s->dec.cfg.dv_profile);
224		✗	return AVERROR(EINVAL);
225			}
226
227		✗	s->enc.cfg = *cfg;
228			} else {
229		✗	av_log(bsf, AV_LOG_WARNING, "No Dolby Vision configuration record "
230			"found? Generating one, but results may be invalid.\n");
231		✗	ret = ff_dovi_configure_from_codedpar(&s->enc, bsf->par_out, NULL, s->compression,
232			FF_COMPLIANCE_NORMAL);
233		✗	if (ret < 0)
234		✗	return ret;
235			/* Be conservative in accepting all compressed RPUs */
236		✗	s->dec.cfg = s->enc.cfg;
237		✗	s->dec.cfg.dv_md_compression = AV_DOVI_COMPRESSION_EXTENDED;
238			}
239			}
240
241		✗	switch (bsf->par_in->codec_id) {
242		✗	case AV_CODEC_ID_HEVC:
243		✗	return ff_cbs_bsf_generic_init(bsf, &dovi_rpu_hevc_type);
244		✗	case AV_CODEC_ID_AV1:
245		✗	return ff_cbs_bsf_generic_init(bsf, &dovi_rpu_av1_type);
246		✗	default:
247		✗	return AVERROR_BUG;
248			}
249			}
250
251		✗	static void dovi_rpu_close(AVBSFContext *bsf)
252			{
253		✗	DoviRpuContext *s = bsf->priv_data;
254		✗	ff_dovi_ctx_unref(&s->dec);
255		✗	ff_dovi_ctx_unref(&s->enc);
256		✗	ff_cbs_bsf_generic_close(bsf);
257		✗	}
258
259			#define OFFSET(x) offsetof(DoviRpuContext, x)
260			#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
261			static const AVOption dovi_rpu_options[] = {
262			{ "strip", "Strip Dolby Vision metadata", OFFSET(strip), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
263			{ "compression", "DV metadata compression mode", OFFSET(compression), AV_OPT_TYPE_INT, { .i64 = AV_DOVI_COMPRESSION_LIMITED }, 0, AV_DOVI_COMPRESSION_EXTENDED, FLAGS, .unit = "compression" },
264			{ "none", "Don't compress metadata", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, .flags = FLAGS, .unit = "compression" },
265			{ "limited", "Limited metadata compression", 0, AV_OPT_TYPE_CONST, {.i64 = AV_DOVI_COMPRESSION_LIMITED}, .flags = FLAGS, .unit = "compression" },
266			{ "extended", "Extended metadata compression",0, AV_OPT_TYPE_CONST, {.i64 = AV_DOVI_COMPRESSION_EXTENDED}, .flags = FLAGS, .unit = "compression" },
267			{ NULL }
268			};
269
270			static const AVClass dovi_rpu_class = {
271			.class_name = "dovi_rpu_bsf",
272			.item_name = av_default_item_name,
273			.option = dovi_rpu_options,
274			.version = LIBAVUTIL_VERSION_INT,
275			};
276
277			static const enum AVCodecID dovi_rpu_codec_ids[] = {
278			AV_CODEC_ID_HEVC, AV_CODEC_ID_AV1, AV_CODEC_ID_NONE,
279			};
280
281			const FFBitStreamFilter ff_dovi_rpu_bsf = {
282			.p.name = "dovi_rpu",
283			.p.codec_ids = dovi_rpu_codec_ids,
284			.p.priv_class = &dovi_rpu_class,
285			.priv_data_size = sizeof(DoviRpuContext),
286			.init = &dovi_rpu_init,
287			.close = &dovi_rpu_close,
288			.filter = &ff_cbs_bsf_generic_filter,
289			};
290