FFmpeg  4.3.8
vp9_metadata_bsf.c
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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/avstring.h"
20 #include "libavutil/common.h"
21 #include "libavutil/opt.h"
22 
23 #include "bsf.h"
24 #include "bsf_internal.h"
25 #include "cbs.h"
26 #include "cbs_vp9.h"
27 
28 typedef struct VP9MetadataContext {
29  const AVClass *class;
30 
33 
36 
39 
40 
42 {
44  CodedBitstreamFragment *frag = &ctx->fragment;
45  int err, i;
46 
47  err = ff_bsf_get_packet_ref(bsf, pkt);
48  if (err < 0)
49  return err;
50 
51  err = ff_cbs_read_packet(ctx->cbc, frag, pkt);
52  if (err < 0) {
53  av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
54  goto fail;
55  }
56 
57  for (i = 0; i < frag->nb_units; i++) {
58  VP9RawFrame *frame = frag->units[i].content;
59  VP9RawFrameHeader *header = &frame->header;
60  int profile = (header->profile_high_bit << 1) + header->profile_low_bit;
61 
62  if (header->frame_type == VP9_KEY_FRAME ||
63  header->intra_only && profile > 0) {
64  if (ctx->color_space >= 0) {
65  if (!(profile & 1) && ctx->color_space == VP9_CS_RGB) {
66  if (!(ctx->color_warnings & 2)) {
67  av_log(bsf, AV_LOG_WARNING, "Warning: RGB "
68  "incompatible with profiles 0 and 2.\n");
69  ctx->color_warnings |= 2;
70  }
71  } else
72  header->color_space = ctx->color_space;
73  }
74 
75  if (ctx->color_range >= 0)
76  header->color_range = ctx->color_range;
77  if (header->color_space == VP9_CS_RGB) {
78  if (!(ctx->color_warnings & 1) && !header->color_range) {
79  av_log(bsf, AV_LOG_WARNING, "Warning: Color space RGB "
80  "implicitly sets color range to PC range.\n");
81  ctx->color_warnings |= 1;
82  }
83  header->color_range = 1;
84  }
85  } else if (!(ctx->color_warnings & 4) && header->intra_only && !profile &&
86  ctx->color_space >= 0 && ctx->color_space != VP9_CS_BT_601) {
87  av_log(bsf, AV_LOG_WARNING, "Warning: Intra-only frames in "
88  "profile 0 are automatically BT.601.\n");
89  ctx->color_warnings |= 4;
90  }
91  }
92 
93  err = ff_cbs_write_packet(ctx->cbc, pkt, frag);
94  if (err < 0) {
95  av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
96  goto fail;
97  }
98 
99  err = 0;
100 fail:
101  ff_cbs_fragment_reset(ctx->cbc, frag);
102 
103  if (err < 0)
104  av_packet_unref(pkt);
105 
106  return err;
107 }
108 
110 {
112 
113  return ff_cbs_init(&ctx->cbc, AV_CODEC_ID_VP9, bsf);
114 }
115 
117 {
119 
120  ff_cbs_fragment_free(ctx->cbc, &ctx->fragment);
121  ff_cbs_close(&ctx->cbc);
122 }
123 
124 #define OFFSET(x) offsetof(VP9MetadataContext, x)
125 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
126 static const AVOption vp9_metadata_options[] = {
127  { "color_space", "Set colour space (section 7.2.2)",
129  { .i64 = -1 }, -1, VP9_CS_RGB, FLAGS, "cs" },
130  { "unknown", "Unknown/unspecified", 0, AV_OPT_TYPE_CONST,
131  { .i64 = VP9_CS_UNKNOWN }, .flags = FLAGS, .unit = "cs" },
132  { "bt601", "ITU-R BT.601-7", 0, AV_OPT_TYPE_CONST,
133  { .i64 = VP9_CS_BT_601 }, .flags = FLAGS, .unit = "cs" },
134  { "bt709", "ITU-R BT.709-6", 0, AV_OPT_TYPE_CONST,
135  { .i64 = VP9_CS_BT_709 }, .flags = FLAGS, .unit = "cs" },
136  { "smpte170", "SMPTE-170", 0, AV_OPT_TYPE_CONST,
137  { .i64 = VP9_CS_SMPTE_170 }, .flags = FLAGS, .unit = "cs" },
138  { "smpte240", "SMPTE-240", 0, AV_OPT_TYPE_CONST,
139  { .i64 = VP9_CS_SMPTE_240 }, .flags = FLAGS, .unit = "cs" },
140  { "bt2020", "ITU-R BT.2020-2", 0, AV_OPT_TYPE_CONST,
141  { .i64 = VP9_CS_BT_2020 }, .flags = FLAGS, .unit = "cs" },
142  { "rgb", "sRGB / IEC 61966-2-1", 0, AV_OPT_TYPE_CONST,
143  { .i64 = VP9_CS_RGB }, .flags = FLAGS, .unit = "cs" },
144 
145  { "color_range", "Set colour range (section 7.2.2)",
147  { .i64 = -1 }, -1, 1, FLAGS, "cr" },
148  { "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST,
149  { .i64 = 0 }, .flags = FLAGS, .unit = "cr" },
150  { "pc", "PC (full) range", 0, AV_OPT_TYPE_CONST,
151  { .i64 = 1 }, .flags = FLAGS, .unit = "cr" },
152 
153  { NULL }
154 };
155 
156 static const AVClass vp9_metadata_class = {
157  .class_name = "vp9_metadata_bsf",
158  .item_name = av_default_item_name,
159  .option = vp9_metadata_options,
160  .version = LIBAVUTIL_VERSION_INT,
161 };
162 
163 static const enum AVCodecID vp9_metadata_codec_ids[] = {
165 };
166 
168  .name = "vp9_metadata",
169  .priv_data_size = sizeof(VP9MetadataContext),
170  .priv_class = &vp9_metadata_class,
172  .close = &vp9_metadata_close,
175 };
CodedBitstreamContext * cbc
uint8_t intra_only
Definition: cbs_vp9.h:104
#define NULL
Definition: coverity.c:32
int nb_units
Number of units in this fragment.
Definition: cbs.h:147
uint8_t color_space
Definition: cbs_vp9.h:97
static int vp9_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
AVOption.
Definition: opt.h:246
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int ff_cbs_write_packet(CodedBitstreamContext *ctx, AVPacket *pkt, CodedBitstreamFragment *frag)
Write the bitstream of a fragment to a packet.
Definition: cbs.c:401
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int ff_cbs_init(CodedBitstreamContext **ctx_ptr, enum AVCodecID codec_id, void *log_ctx)
Create and initialise a new context for the given codec.
Definition: cbs.c:74
The bitstream filter state.
Definition: bsf.h:49
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
color_range
static AVPacket pkt
void * priv_data
Opaque filter-specific private data.
Definition: bsf.h:70
static enum AVCodecID vp9_metadata_codec_ids[]
static int vp9_metadata_init(AVBSFContext *bsf)
uint8_t profile_high_bit
Definition: cbs_vp9.h:86
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
static const AVOption vp9_metadata_options[]
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, int clip)
Definition: cfhd.c:196
AVOptions.
static AVFrame * frame
int ff_cbs_read_packet(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, const AVPacket *pkt)
Read the data bitstream from a packet into a fragment, then split into units and decompose.
Definition: cbs.c:242
const char * name
Definition: bsf.h:99
void * content
Pointer to the decomposed form of this unit.
Definition: cbs.h:101
static const uint8_t header[24]
Definition: sdr2.c:67
CodedBitstreamUnit * units
Pointer to an array of units of length nb_units_allocated.
Definition: cbs.h:162
#define av_log(a,...)
void ff_cbs_fragment_free(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)
Free the units array of a fragment in addition to what ff_cbs_fragment_reset does.
Definition: cbs.c:157
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define fail()
Definition: checkasm.h:123
uint8_t profile_low_bit
Definition: cbs_vp9.h:85
static const AVClass vp9_metadata_class
AVFormatContext * ctx
Definition: movenc.c:48
CodedBitstreamFragment fragment
const AVBitStreamFilter ff_vp9_metadata_bsf
#define OFFSET(x)
Coded bitstream fragment structure, combining one or more units.
Definition: cbs.h:116
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:605
Describe the class of an AVClass context structure.
Definition: log.h:67
void ff_cbs_fragment_reset(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)
Free the units contained in a fragment as well as the fragment&#39;s own data buffer, but not the units a...
Definition: cbs.c:142
Context structure for coded bitstream operations.
Definition: cbs.h:168
#define FLAGS
void ff_cbs_close(CodedBitstreamContext **ctx_ptr)
Close a context and free all internal state.
Definition: cbs.c:115
static void vp9_metadata_close(AVBSFContext *bsf)
mfxU16 profile
Definition: qsvenc.c:45
uint8_t color_range
Definition: cbs_vp9.h:98
VP9RawFrameHeader header
Definition: cbs_vp9.h:165
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:279
static enum AVCodecID codec_ids[]
uint8_t frame_type
Definition: cbs_vp9.h:91
This structure stores compressed data.
Definition: packet.h:332
int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt)
Called by bitstream filters to get packet for filtering.
Definition: bsf.c:249