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Diffstat (limited to 'libavcodec/hevc_sei.c')
-rw-r--r--libavcodec/hevc_sei.c107
1 files changed, 90 insertions, 17 deletions
diff --git a/libavcodec/hevc_sei.c b/libavcodec/hevc_sei.c
index 590d9fd53a..179b045864 100644
--- a/libavcodec/hevc_sei.c
+++ b/libavcodec/hevc_sei.c
@@ -5,20 +5,20 @@
* Copyright (C) 2012 - 2013 Gildas Cocherel
* Copyright (C) 2013 Vittorio Giovara
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -56,10 +56,13 @@ enum HEVC_SEI_TYPE {
static int decode_nal_sei_decoded_picture_hash(HEVCContext *s)
{
int cIdx, i;
- GetBitContext *gb = &s->HEVClc.gb;
- uint8_t hash_type = get_bits(gb, 8);
+ uint8_t hash_type;
+ //uint16_t picture_crc;
+ //uint32_t picture_checksum;
+ GetBitContext *gb = &s->HEVClc->gb;
+ hash_type = get_bits(gb, 8);
- for (cIdx = 0; cIdx < 3; cIdx++) {
+ for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) {
if (hash_type == 0) {
s->is_md5 = 1;
for (i = 0; i < 16; i++)
@@ -68,7 +71,7 @@ static int decode_nal_sei_decoded_picture_hash(HEVCContext *s)
// picture_crc = get_bits(gb, 16);
skip_bits(gb, 16);
} else if (hash_type == 2) {
- // picture_checksum = get_bits(gb, 32);
+ // picture_checksum = get_bits_long(gb, 32);
skip_bits(gb, 32);
}
}
@@ -77,7 +80,7 @@ static int decode_nal_sei_decoded_picture_hash(HEVCContext *s)
static int decode_nal_sei_frame_packing_arrangement(HEVCContext *s)
{
- GetBitContext *gb = &s->HEVClc.gb;
+ GetBitContext *gb = &s->HEVClc->gb;
get_ue_golomb(gb); // frame_packing_arrangement_id
s->sei_frame_packing_present = !get_bits1(gb);
@@ -103,7 +106,7 @@ static int decode_nal_sei_frame_packing_arrangement(HEVCContext *s)
static int decode_nal_sei_display_orientation(HEVCContext *s)
{
- GetBitContext *gb = &s->HEVClc.gb;
+ GetBitContext *gb = &s->HEVClc->gb;
s->sei_display_orientation_present = !get_bits1(gb);
@@ -118,9 +121,64 @@ static int decode_nal_sei_display_orientation(HEVCContext *s)
return 0;
}
+static int decode_pic_timing(HEVCContext *s)
+{
+ GetBitContext *gb = &s->HEVClc->gb;
+ HEVCSPS *sps;
+
+ if (!s->ps.sps_list[s->active_seq_parameter_set_id])
+ return(AVERROR(ENOMEM));
+ sps = (HEVCSPS*)s->ps.sps_list[s->active_seq_parameter_set_id]->data;
+
+ if (sps->vui.frame_field_info_present_flag) {
+ int pic_struct = get_bits(gb, 4);
+ s->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
+ if (pic_struct == 2) {
+ av_log(s->avctx, AV_LOG_DEBUG, "BOTTOM Field\n");
+ s->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
+ } else if (pic_struct == 1) {
+ av_log(s->avctx, AV_LOG_DEBUG, "TOP Field\n");
+ s->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
+ }
+ get_bits(gb, 2); // source_scan_type
+ get_bits(gb, 1); // duplicate_flag
+ }
+ return 1;
+}
+
+static int active_parameter_sets(HEVCContext *s)
+{
+ GetBitContext *gb = &s->HEVClc->gb;
+ int num_sps_ids_minus1;
+ int i;
+ unsigned active_seq_parameter_set_id;
+
+ get_bits(gb, 4); // active_video_parameter_set_id
+ get_bits(gb, 1); // self_contained_cvs_flag
+ get_bits(gb, 1); // num_sps_ids_minus1
+ num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
+
+ if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
+ av_log(s->avctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
+ return AVERROR_INVALIDDATA;
+ }
+
+ active_seq_parameter_set_id = get_ue_golomb_long(gb);
+ if (active_seq_parameter_set_id >= MAX_SPS_COUNT) {
+ av_log(s->avctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
+ return AVERROR_INVALIDDATA;
+ }
+ s->active_seq_parameter_set_id = active_seq_parameter_set_id;
+
+ for (i = 1; i <= num_sps_ids_minus1; i++)
+ get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
+
+ return 0;
+}
+
static int decode_nal_sei_prefix(HEVCContext *s, int type, int size)
{
- GetBitContext *gb = &s->HEVClc.gb;
+ GetBitContext *gb = &s->HEVClc->gb;
switch (type) {
case 256: // Mismatched value from HM 8.1
@@ -129,6 +187,17 @@ static int decode_nal_sei_prefix(HEVCContext *s, int type, int size)
return decode_nal_sei_frame_packing_arrangement(s);
case SEI_TYPE_DISPLAY_ORIENTATION:
return decode_nal_sei_display_orientation(s);
+ case SEI_TYPE_PICTURE_TIMING:
+ {
+ int ret = decode_pic_timing(s);
+ av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
+ skip_bits(gb, 8 * size);
+ return ret;
+ }
+ case SEI_TYPE_ACTIVE_PARAMETER_SETS:
+ active_parameter_sets(s);
+ av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
+ return 0;
default:
av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
skip_bits_long(gb, 8 * size);
@@ -138,7 +207,7 @@ static int decode_nal_sei_prefix(HEVCContext *s, int type, int size)
static int decode_nal_sei_suffix(HEVCContext *s, int type, int size)
{
- GetBitContext *gb = &s->HEVClc.gb;
+ GetBitContext *gb = &s->HEVClc->gb;
switch (type) {
case SEI_TYPE_DECODED_PICTURE_HASH:
@@ -152,7 +221,7 @@ static int decode_nal_sei_suffix(HEVCContext *s, int type, int size)
static int decode_nal_sei_message(HEVCContext *s)
{
- GetBitContext *gb = &s->HEVClc.gb;
+ GetBitContext *gb = &s->HEVClc->gb;
int payload_type = 0;
int payload_size = 0;
@@ -173,7 +242,7 @@ static int decode_nal_sei_message(HEVCContext *s)
} else { /* nal_unit_type == NAL_SEI_SUFFIX */
return decode_nal_sei_suffix(s, payload_type, payload_size);
}
- return 0;
+ return 1;
}
static int more_rbsp_data(GetBitContext *gb)
@@ -183,8 +252,12 @@ static int more_rbsp_data(GetBitContext *gb)
int ff_hevc_decode_nal_sei(HEVCContext *s)
{
+ int ret;
+
do {
- decode_nal_sei_message(s);
- } while (more_rbsp_data(&s->HEVClc.gb));
- return 0;
+ ret = decode_nal_sei_message(s);
+ if (ret < 0)
+ return(AVERROR(ENOMEM));
+ } while (more_rbsp_data(&s->HEVClc->gb));
+ return 1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-08 15:45:29 +0000