cbs_h2645: Merge SEI messages in common between codecs

Make a new template file for common SEI messages - this will also apply
to H.266.

1 files changed, 132 insertions, 0 deletions

diff --git a/libavcodec/cbs_sei_syntax_template.c b/libavcodec/cbs_sei_syntax_template.c
new file mode 100644
index 0000000000..93d9fafde1
--- /dev/null
+++ b/libavcodec/cbs_sei_syntax_template.c
@@ -0,0 +1,132 @@
+/*
+ * 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
+ */
+
+static int FUNC(sei_user_data_registered)
+    (CodedBitstreamContext *ctx, RWContext *rw,
+     SEIRawUserDataRegistered *current, uint32_t *payload_size)
+{
+    int err, i, j;
+
+    HEADER("User Data Registered ITU-T T.35");
+
+    u(8, itu_t_t35_country_code, 0x00, 0xff);
+    if (current->itu_t_t35_country_code != 0xff)
+        i = 1;
+    else {
+        u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff);
+        i = 2;
+    }
+
+#ifdef READ
+    if (*payload_size < i) {
+        av_log(ctx->log_ctx, AV_LOG_ERROR,
+               "Invalid SEI user data registered payload.\n");
+        return AVERROR_INVALIDDATA;
+    }
+    current->data_length = *payload_size - i;
+#else
+    *payload_size = i + current->data_length;
+#endif
+
+    allocate(current->data, current->data_length);
+    for (j = 0; j < current->data_length; j++)
+        xu(8, itu_t_t35_payload_byte[], current->data[j], 0x00, 0xff, 1, i + j);
+
+    return 0;
+}
+
+static int FUNC(sei_user_data_unregistered)
+    (CodedBitstreamContext *ctx, RWContext *rw,
+     SEIRawUserDataUnregistered *current, uint32_t *payload_size)
+{
+    int err, i;
+
+    HEADER("User Data Unregistered");
+
+#ifdef READ
+    if (*payload_size < 16) {
+        av_log(ctx->log_ctx, AV_LOG_ERROR,
+               "Invalid SEI user data unregistered payload.\n");
+        return AVERROR_INVALIDDATA;
+    }
+    current->data_length = *payload_size - 16;
+#else
+    *payload_size = 16 + current->data_length;
+#endif
+
+    for (i = 0; i < 16; i++)
+        us(8, uuid_iso_iec_11578[i], 0x00, 0xff, 1, i);
+
+    allocate(current->data, current->data_length);
+
+    for (i = 0; i < current->data_length; i++)
+        xu(8, user_data_payload_byte[i], current->data[i], 0x00, 0xff, 1, i);
+
+    return 0;
+}
+
+static int FUNC(sei_mastering_display_colour_volume)
+    (CodedBitstreamContext *ctx, RWContext *rw,
+     SEIRawMasteringDisplayColourVolume *current)
+{
+    int err, c;
+
+    HEADER("Mastering Display Colour Volume");
+
+    for (c = 0; c < 3; c++) {
+        us(16, display_primaries_x[c], 0, 50000, 1, c);
+        us(16, display_primaries_y[c], 0, 50000, 1, c);
+    }
+
+    u(16, white_point_x, 0, 50000);
+    u(16, white_point_y, 0, 50000);
+
+    u(32, max_display_mastering_luminance,
+      1, MAX_UINT_BITS(32));
+    u(32, min_display_mastering_luminance,
+      0, current->max_display_mastering_luminance - 1);
+
+    return 0;
+}
+
+static int FUNC(sei_content_light_level)
+    (CodedBitstreamContext *ctx, RWContext *rw,
+     SEIRawContentLightLevelInfo *current)
+{
+    int err;
+
+    HEADER("Content Light Level");
+
+    ub(16, max_content_light_level);
+    ub(16, max_pic_average_light_level);
+
+    return 0;
+}
+
+static int FUNC(sei_alternative_transfer_characteristics)
+    (CodedBitstreamContext *ctx, RWContext *rw,
+     SEIRawAlternativeTransferCharacteristics *current)
+{
+    int err;
+
+    HEADER("Alternative Transfer Characteristics");
+
+    ub(8, preferred_transfer_characteristics);
+
+    return 0;
+}