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Code Issues Releases Activity

cbs_h264: Add support for pan-scan rectangle SEI messages

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This commit is contained in:
Mark Thompson 2018-05-07 23:33:08 +01:00
parent 9d375e114a
commit d94dda742c
4 changed files with 42 additions and 0 deletions
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12
libavcodec/cbs_h264.h
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@ -264,6 +264,17 @@ typedef struct H264RawSEIPicTiming {
H264RawSEIPicTimestamp timestamp[3];
} H264RawSEIPicTiming;
typedef struct H264RawSEIPanScanRect {
uint32_t pan_scan_rect_id;
uint8_t pan_scan_rect_cancel_flag;
uint8_t pan_scan_cnt_minus1;
int32_t pan_scan_rect_left_offset[3];
int32_t pan_scan_rect_right_offset[3];
int32_t pan_scan_rect_top_offset[3];
int32_t pan_scan_rect_bottom_offset[3];
uint16_t pan_scan_rect_repetition_period;
} H264RawSEIPanScanRect;
typedef struct H264RawSEIUserDataRegistered {
uint8_t itu_t_t35_country_code;
uint8_t itu_t_t35_country_code_extension_byte;
@ -301,6 +312,7 @@ typedef struct H264RawSEIPayload {
union {
H264RawSEIBufferingPeriod buffering_period;
H264RawSEIPicTiming pic_timing;
H264RawSEIPanScanRect pan_scan_rect;
// H264RawSEIFiller filler -> no fields.
H264RawSEIUserDataRegistered user_data_registered;
H264RawSEIUserDataUnregistered user_data_unregistered;

1
libavcodec/cbs_h2645.c
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@ -425,6 +425,7 @@ static void cbs_h264_free_sei_payload(H264RawSEIPayload *payload)
switch (payload->payload_type) {
case H264_SEI_TYPE_BUFFERING_PERIOD:
case H264_SEI_TYPE_PIC_TIMING:
case H264_SEI_TYPE_PAN_SCAN_RECT:
case H264_SEI_TYPE_RECOVERY_POINT:
case H264_SEI_TYPE_DISPLAY_ORIENTATION:
break;

28
libavcodec/cbs_h264_syntax_template.c
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@ -626,6 +626,30 @@ static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw,
return 0;
}
static int FUNC(sei_pan_scan_rect)(CodedBitstreamContext *ctx, RWContext *rw,
H264RawSEIPanScanRect *current)
{
int err, i;
ue(pan_scan_rect_id, 0, UINT32_MAX - 1);
flag(pan_scan_rect_cancel_flag);
if (!current->pan_scan_rect_cancel_flag) {
ue(pan_scan_cnt_minus1, 0, 2);
for (i = 0; i <= current->pan_scan_cnt_minus1; i++) {
ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i);
}
ue(pan_scan_rect_repetition_period, 0, 16384);
}
return 0;
}
static int FUNC(sei_user_data_registered)(CodedBitstreamContext *ctx, RWContext *rw,
H264RawSEIUserDataRegistered *current,
uint32_t *payload_size)
@ -737,6 +761,10 @@ static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw,
CHECK(FUNC(sei_pic_timing)
(ctx, rw, &current->payload.pic_timing));
break;
case H264_SEI_TYPE_PAN_SCAN_RECT:
CHECK(FUNC(sei_pan_scan_rect)
(ctx, rw, &current->payload.pan_scan_rect));
break;
case H264_SEI_TYPE_FILLER_PAYLOAD:
{
for (i = 0; i < current->payload_size; i++)

1
libavcodec/h264_sei.h
View File

@ -27,6 +27,7 @@
typedef enum {
H264_SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
H264_SEI_TYPE_PIC_TIMING = 1, ///< picture timing
H264_SEI_TYPE_PAN_SCAN_RECT = 2, ///< pan-scan rectangle
H264_SEI_TYPE_FILLER_PAYLOAD = 3, ///< filler data
H264_SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
H264_SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data