FFmpeg  4.2.3
prores_metadata_bsf.c
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1 /*
2  * Prores Metadata bitstream filter
3  * Copyright (c) 2018 Jokyo Images
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * Prores Metadata bitstream filter
25  * set frame colorspace property
26  */
27 
28 #include "libavutil/common.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/opt.h"
31 #include "bsf.h"
32 
33 typedef struct ProresMetadataContext {
34  const AVClass *class;
35 
40 
42 {
44  int ret = 0;
45  int buf_size;
46  uint8_t *buf;
47 
48  ret = ff_bsf_get_packet_ref(bsf, pkt);
49  if (ret < 0)
50  return ret;
51 
52  ret = av_packet_make_writable(pkt);
53  if (ret < 0)
54  goto fail;
55 
56  buf = pkt->data;
57  buf_size = pkt->size;
58 
59  /* check start of the prores frame */
60  if (buf_size < 28) {
61  av_log(bsf, AV_LOG_ERROR, "not enough data in prores frame\n");
62  ret = AVERROR_INVALIDDATA;
63  goto fail;
64  }
65 
66  if (AV_RL32(buf + 4) != AV_RL32("icpf")) {
67  av_log(bsf, AV_LOG_ERROR, "invalid frame header\n");
68  ret = AVERROR_INVALIDDATA;
69  goto fail;
70  }
71 
72  if (AV_RB16(buf + 8) < 28) {
73  av_log(bsf, AV_LOG_ERROR, "invalid frame header size\n");
74  ret = AVERROR_INVALIDDATA;
75  goto fail;
76  }
77 
78  /* set the new values */
79  if (ctx->color_primaries != -1)
80  buf[8+14] = ctx->color_primaries;
81  if (ctx->transfer_characteristics != -1)
82  buf[8+15] = ctx->transfer_characteristics;
83  if (ctx->matrix_coefficients != -1)
84  buf[8+16] = ctx->matrix_coefficients;
85 
86 fail:
87  if (ret < 0)
88  av_packet_unref(pkt);
89  return ret;
90 }
91 
92 static const enum AVCodecID codec_ids[] = {
94 };
95 
97 {
99  /*! check options */
100  switch (ctx->color_primaries) {
101  case -1:
102  case 0:
103  case AVCOL_PRI_BT709:
104  case AVCOL_PRI_BT470BG:
105  case AVCOL_PRI_SMPTE170M:
106  case AVCOL_PRI_BT2020:
107  case AVCOL_PRI_SMPTE431:
108  case AVCOL_PRI_SMPTE432:
109  break;
110  default:
111  av_log(bsf, AV_LOG_ERROR, "Color primaries %d is not a valid value\n", ctx->color_primaries);
112  return AVERROR(EINVAL);
113  }
114 
115  switch (ctx->matrix_coefficients) {
116  case -1:
117  case 0:
118  case AVCOL_SPC_BT709:
119  case AVCOL_SPC_SMPTE170M:
121  break;
122  default:
123  av_log(bsf, AV_LOG_ERROR, "Colorspace %d is not a valid value\n", ctx->matrix_coefficients);
124  return AVERROR(EINVAL);
125  }
126 
127  return 0;
128 }
129 
130 #define OFFSET(x) offsetof(ProresMetadataContext, x)
131 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_BSF_PARAM)
132 static const AVOption options[] = {
133  {"color_primaries", "select color primaries", OFFSET(color_primaries), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_PRI_SMPTE432, FLAGS, "color_primaries"},
134  {"auto", "keep the same color primaries", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
135  {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
136  {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
137  {"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
138  {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
139  {"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
140  {"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
141  {"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, INT_MIN, INT_MAX, FLAGS, "color_primaries"},
142 
143  {"color_trc", "select color transfer", OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_TRC_BT709, FLAGS, "color_trc"},
144  {"auto", "keep the same color transfer", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
145  {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
146  {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, INT_MIN, INT_MAX, FLAGS, "color_trc"},
147 
148  {"colorspace", "select colorspace", OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_SPC_BT2020_NCL, FLAGS, "colorspace"},
149  {"auto", "keep the same colorspace", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
150  {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
151  {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
152  {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
153  {"bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, FLAGS, "colorspace"},
154 
155  { NULL },
156 };
157 
159  .class_name = "prores_metadata_bsf",
160  .item_name = av_default_item_name,
161  .option = options,
162  .version = LIBAVUTIL_VERSION_INT,
163 };
164 
166  .name = "prores_metadata",
167  .init = prores_metadata_init,
168  .filter = prores_metadata,
169  .priv_data_size = sizeof(ProresMetadataContext),
170  .priv_class = &prores_metadata_class,
171  .codec_ids = codec_ids,
172 };
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:498
#define OFFSET(x)
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVOption.
Definition: opt.h:246
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
SMPTE ST 432-1 (2010) / P3 D65 / Display P3.
Definition: pixfmt.h:458
The bitstream filter state.
Definition: avcodec.h:5763
int size
Definition: avcodec.h:1478
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:503
SMPTE ST 431-2 (2011) / DCI P3.
Definition: pixfmt.h:457
static AVPacket pkt
void * priv_data
Opaque filter-specific private data.
Definition: avcodec.h:5784
static const AVOption options[]
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
uint8_t
AVOptions.
#define FLAGS
const char * name
Definition: avcodec.h:5813
uint8_t * data
Definition: avcodec.h:1477
static int prores_metadata_init(AVBSFContext *bsf)
static int prores_metadata(AVBSFContext *bsf, AVPacket *pkt)
#define av_log(a,...)
int av_packet_make_writable(AVPacket *pkt)
Create a writable reference for the data described by a given packet, avoiding data copy if possible...
Definition: avpacket.c:682
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AV_RB16
Definition: intreadwrite.h:53
#define AVERROR(e)
Definition: error.h:43
also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
Definition: pixfmt.h:445
static const AVClass prores_metadata_class
#define fail()
Definition: checkasm.h:120
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:507
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
Definition: pixfmt.h:450
AVFormatContext * ctx
Definition: movenc.c:48
#define AV_RL32
Definition: intreadwrite.h:146
static enum AVCodecID codec_ids[]
also ITU-R BT1361
Definition: pixfmt.h:469
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:599
void * buf
Definition: avisynth_c.h:766
Describe the class of an AVClass context structure.
Definition: log.h:67
common internal and external API header
const AVBitStreamFilter ff_prores_metadata_bsf
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:451
ITU-R BT2020.
Definition: pixfmt.h:454
This structure stores compressed data.
Definition: avcodec.h:1454
int ff_bsf_get_packet_ref(AVBSFContext *ctx, AVPacket *pkt)
Called by bitstream filters to get packet for filtering.
Definition: bsf.c:239