avcodec : add prores_metadata bsf for set the color property of each prores frame

doc/bitstream_filters.texi

@@ -530,6 +530,72 @@ ffmpeg -i INPUT -c copy -bsf noise[=1] output.mkv
 @section null
 This bitstream filter passes the packets through unchanged.
 
+@section prores_metadata
+
+Modify color property metadata embedded in prores stream.
+
+@table @option
+@item color_primaries
+Set the color primaries.
+Available values are:
+
+@table @samp
+@item auto
+Keep the same color primaries property (default).
+
+@item unknown
+@item bt709
+@item bt470bg
+BT601 625
+
+@item smpte170m
+BT601 525
+
+@item bt2020
+@item smpte431
+DCI P3
+
+@item smpte432
+P3 D65
+
+@end table
+
+@item transfer_characteristics
+Set the color transfert.
+Available values are:
+
+@table @samp
+@item auto
+Keep the same transfer characteristics property (default).
+
+@item unknown
+@item bt709
+BT 601, BT 709, BT 2020
+@end table
+
+
+@item matrix_coefficients
+Set the matrix coefficient.
+Available values are:
+
+@table @samp
+@item auto
+Keep the same transfer characteristics property (default).
+
+@item unknown
+@item bt709
+@item smpte170m
+BT 601
+
+@item bt2020nc
+@end table
+@end table
+
+Set Rec709 colorspace for each frame of the file
+@example
+ffmpeg -i INPUT -c copy -bsf:v prores_metadata=color_primaries=bt709:color_trc=bt709:colorspace=bt709 output.mov
+@end example
+
 @section remove_extra
 
 Remove extradata from packets.

libavcodec/Makefile

@@ -1081,6 +1081,7 @@ OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF)  += mp3_header_decompress_bsf.o \
 OBJS-$(CONFIG_MPEG2_METADATA_BSF)         += mpeg2_metadata_bsf.o
 OBJS-$(CONFIG_NOISE_BSF)                  += noise_bsf.o
 OBJS-$(CONFIG_NULL_BSF)                   += null_bsf.o
+OBJS-$(CONFIG_PRORES_METADATA_BSF)        += prores_metadata_bsf.o
 OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF)       += remove_extradata_bsf.o
 OBJS-$(CONFIG_TEXT2MOVSUB_BSF)            += movsub_bsf.o
 OBJS-$(CONFIG_TRACE_HEADERS_BSF)          += trace_headers_bsf.o

libavcodec/bitstream_filters.c

@@ -47,6 +47,7 @@ extern const AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf;
 extern const AVBitStreamFilter ff_mov2textsub_bsf;
 extern const AVBitStreamFilter ff_noise_bsf;
 extern const AVBitStreamFilter ff_null_bsf;
+extern const AVBitStreamFilter ff_prores_metadata_bsf;
 extern const AVBitStreamFilter ff_remove_extradata_bsf;
 extern const AVBitStreamFilter ff_text2movsub_bsf;
 extern const AVBitStreamFilter ff_trace_headers_bsf;

libavcodec/prores_metadata_bsf.c

+/*
+ * Prores Metadata bitstream filter
+ * Copyright (c) 2018 Jokyo Images
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Prores Metadata bitstream filter
+ * set frame colorspace property
+ */
+
+#include "libavutil/common.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/opt.h"
+#include "bsf.h"
+
+typedef struct ProresMetadataContext {
+    const AVClass *class;
+
+    int color_primaries;
+    int transfer_characteristics;
+    int matrix_coefficients;
+} ProresMetadataContext;
+
+static int prores_metadata(AVBSFContext *bsf, AVPacket *pkt)
+{
+    ProresMetadataContext *ctx = bsf->priv_data;
+    int ret = 0;
+    int buf_size;
+    uint8_t *buf;
+
+    ret = ff_bsf_get_packet_ref(bsf, pkt);
+    if (ret < 0)
+        return ret;
+
+    ret = av_packet_make_writable(pkt);
+    if (ret < 0)
+        goto fail;
+
+    buf = pkt->data;
+    buf_size = pkt->size;
+
+    /* check start of the prores frame */
+    if (buf_size < 28) {
+        av_log(bsf, AV_LOG_ERROR, "not enough data in prores frame\n");
+        ret = AVERROR_INVALIDDATA;
+        goto fail;
+    }
+
+    if (AV_RL32(buf + 4) != AV_RL32("icpf")) {
+        av_log(bsf, AV_LOG_ERROR, "invalid frame header\n");
+        ret = AVERROR_INVALIDDATA;
+        goto fail;
+    }
+
+    if (AV_RB16(buf + 8) < 28) {
+        av_log(bsf, AV_LOG_ERROR, "invalid frame header size\n");
+        ret = AVERROR_INVALIDDATA;
+        goto fail;
+    }
+
+    /* set the new values */
+    if (ctx->color_primaries != -1)
+        buf[8+14] = ctx->color_primaries;
+    if (ctx->transfer_characteristics != -1)
+        buf[8+15] = ctx->transfer_characteristics;
+    if (ctx->matrix_coefficients != -1)
+        buf[8+16] = ctx->matrix_coefficients;
+
+fail:
+    if (ret < 0)
+        av_packet_unref(pkt);
+    return ret;
+}
+
+static const enum AVCodecID codec_ids[] = {
+    AV_CODEC_ID_PRORES, AV_CODEC_ID_NONE,
+};
+
+static int prores_metadata_init(AVBSFContext *bsf)
+{
+    ProresMetadataContext *ctx = bsf->priv_data;
+    /*! check options */
+    switch (ctx->color_primaries) {
+    case -1:
+    case 0:
+    case AVCOL_PRI_BT709:
+    case AVCOL_PRI_BT470BG:
+    case AVCOL_PRI_SMPTE170M:
+    case AVCOL_PRI_BT2020:
+    case AVCOL_PRI_SMPTE431:
+    case AVCOL_PRI_SMPTE432:
+        break;
+    default:
+        av_log(bsf, AV_LOG_ERROR, "Color primaries %d is not a valid value\n", ctx->color_primaries);
+        return AVERROR(EINVAL);
+    }
+
+    switch (ctx->matrix_coefficients) {
+    case -1:
+    case 0:
+    case AVCOL_PRI_BT709:
+    case AVCOL_SPC_SMPTE170M:
+    case AVCOL_SPC_BT2020_NCL:
+        break;
+    default:
+        av_log(bsf, AV_LOG_ERROR, "Colorspace %d is not a valid value\n", ctx->matrix_coefficients);
+        return AVERROR(EINVAL);
+    }
+
+    return 0;
+}
+
+#define OFFSET(x) offsetof(ProresMetadataContext, x)
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_BSF_PARAM)
+static const AVOption options[] = {
+    {"color_primaries", "select color primaries", OFFSET(color_primaries), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_PRI_SMPTE432, FLAGS, "color_primaries"},
+    {"auto", "keep the same color primaries",  0, AV_OPT_TYPE_CONST, {.i64=-1},                     INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"unknown",                         NULL,  0, AV_OPT_TYPE_CONST, {.i64=0},                      INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"bt709",                           NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709},        INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"bt470bg",                         NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG},      INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"smpte170m",                       NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M},    INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"bt2020",                          NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020},       INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"smpte431",                        NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431},     INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+    {"smpte432",                        NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432},     INT_MIN, INT_MAX, FLAGS, "color_primaries"},
+
+    {"color_trc", "select color transfer", OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVCOL_TRC_BT709, FLAGS, "color_trc"},
+    {"auto", "keep the same color transfer",  0, AV_OPT_TYPE_CONST, {.i64=-1},                               INT_MIN, INT_MAX, FLAGS, "color_trc"},
+    {"unknown",                        NULL,  0, AV_OPT_TYPE_CONST, {.i64=0},                                INT_MIN, INT_MAX, FLAGS, "color_trc"},
+    {"bt709",                          NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709},                  INT_MIN, INT_MAX, FLAGS, "color_trc"},
+
+    {"colorspace", "select colorspace", OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, {.i64=-1}, -1,  AVCOL_SPC_BT2020_NCL, FLAGS, "colorspace"},
+    {"auto", "keep the same colorspace",  0, AV_OPT_TYPE_CONST, {.i64=-1},                            INT_MIN, INT_MAX, FLAGS, "colorspace"},
+    {"unknown",                    NULL,  0, AV_OPT_TYPE_CONST, {.i64=0},                             INT_MIN, INT_MAX, FLAGS, "colorspace"},
+    {"bt709",                      NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709},               INT_MIN, INT_MAX, FLAGS, "colorspace"},
+    {"smpte170m",                  NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M},           INT_MIN, INT_MAX, FLAGS, "colorspace"},
+    {"bt2020nc",                   NULL,  0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL},          INT_MIN, INT_MAX, FLAGS, "colorspace"},
+
+    { NULL },
+};
+
+static const AVClass prores_metadata_class = {
+    .class_name = "prores_metadata_bsf",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+const AVBitStreamFilter ff_prores_metadata_bsf = {
+    .name       = "prores_metadata",
+    .init       = prores_metadata_init,
+    .filter     = prores_metadata,
+    .priv_data_size = sizeof(ProresMetadataContext),
+    .priv_class = &prores_metadata_class,
+    .codec_ids  = codec_ids,
+};