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avcodec/h264_slice: replace cur->f with out for better readability

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Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2020-06-20 20:08:06 +08:00
parent dcf9235a87
commit b531216e6a
1 changed files with 24 additions and 23 deletions
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47
libavcodec/h264_slice.c
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@ -1125,9 +1125,10 @@ static int h264_export_frame_props(H264Context *h)
{
const SPS *sps = h->ps.sps;
H264Picture *cur = h->cur_pic_ptr;
AVFrame *out = cur->f;
cur->f->interlaced_frame = 0;
cur->f->repeat_pict = 0;
out->interlaced_frame = 0;
out->repeat_pict = 0;
/* Signal interlacing information externally. */
/* Prioritize picture timing SEI information over used
@ -1150,59 +1151,59 @@ static int h264_export_frame_props(H264Context *h)
break;
case H264_SEI_PIC_STRUCT_TOP_FIELD:
case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
cur->f->interlaced_frame = 1;
out->interlaced_frame = 1;
break;
case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
if (FIELD_OR_MBAFF_PICTURE(h))
cur->f->interlaced_frame = 1;
out->interlaced_frame = 1;
else
// try to flag soft telecine progressive
cur->f->interlaced_frame = h->prev_interlaced_frame;
out->interlaced_frame = h->prev_interlaced_frame;
break;
case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
/* Signal the possibility of telecined film externally
* (pic_struct 5,6). From these hints, let the applications
* decide if they apply deinterlacing. */
cur->f->repeat_pict = 1;
out->repeat_pict = 1;
break;
case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
cur->f->repeat_pict = 2;
out->repeat_pict = 2;
break;
case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
cur->f->repeat_pict = 4;
out->repeat_pict = 4;
break;
}
if ((pt->ct_type & 3) &&
pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
out->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
} else {
/* Derive interlacing flag from used decoding process. */
cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
out->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
}
h->prev_interlaced_frame = cur->f->interlaced_frame;
h->prev_interlaced_frame = out->interlaced_frame;
if (cur->field_poc[0] != cur->field_poc[1]) {
/* Derive top_field_first from field pocs. */
cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
out->top_field_first = cur->field_poc[0] < cur->field_poc[1];
} else {
if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
/* Use picture timing SEI information. Even if it is a
* information of a past frame, better than nothing. */
if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
cur->f->top_field_first = 1;
out->top_field_first = 1;
else
cur->f->top_field_first = 0;
} else if (cur->f->interlaced_frame) {
out->top_field_first = 0;
} else if (out->interlaced_frame) {
/* Default to top field first when pic_struct_present_flag
* is not set but interlaced frame detected */
cur->f->top_field_first = 1;
out->top_field_first = 1;
} else {
/* Most likely progressive */
cur->f->top_field_first = 0;
out->top_field_first = 0;
}
}
@ -1211,7 +1212,7 @@ static int h264_export_frame_props(H264Context *h)
h->sei.frame_packing.content_interpretation_type > 0 &&
h->sei.frame_packing.content_interpretation_type < 3) {
H264SEIFramePacking *fp = &h->sei.frame_packing;
AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
AVStereo3D *stereo = av_stereo3d_create_side_data(out);
if (stereo) {
switch (fp->arrangement_type) {
case H264_SEI_FPA_TYPE_CHECKERBOARD:
@ -1258,7 +1259,7 @@ static int h264_export_frame_props(H264Context *h)
h->sei.display_orientation.vflip)) {
H264SEIDisplayOrientation *o = &h->sei.display_orientation;
double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
AVFrameSideData *rotation = av_frame_new_side_data(out,
AV_FRAME_DATA_DISPLAYMATRIX,
sizeof(int32_t) * 9);
if (rotation) {
@ -1269,7 +1270,7 @@ static int h264_export_frame_props(H264Context *h)
}
if (h->sei.afd.present) {
AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
AVFrameSideData *sd = av_frame_new_side_data(out, AV_FRAME_DATA_AFD,
sizeof(uint8_t));
if (sd) {
@ -1281,7 +1282,7 @@ static int h264_export_frame_props(H264Context *h)
if (h->sei.a53_caption.buf_ref) {
H264SEIA53Caption *a53 = &h->sei.a53_caption;
AVFrameSideData *sd = av_frame_new_side_data_from_buf(cur->f, AV_FRAME_DATA_A53_CC, a53->buf_ref);
AVFrameSideData *sd = av_frame_new_side_data_from_buf(out, AV_FRAME_DATA_A53_CC, a53->buf_ref);
if (!sd)
av_buffer_unref(&a53->buf_ref);
a53->buf_ref = NULL;
@ -1293,7 +1294,7 @@ static int h264_export_frame_props(H264Context *h)
H264SEIUnregistered *unreg = &h->sei.unregistered;
if (unreg->buf_ref[i]) {
AVFrameSideData *sd = av_frame_new_side_data_from_buf(cur->f,
AVFrameSideData *sd = av_frame_new_side_data_from_buf(out,
AV_FRAME_DATA_SEI_UNREGISTERED,
unreg->buf_ref[i]);
if (!sd)
@ -1306,7 +1307,7 @@ static int h264_export_frame_props(H264Context *h)
if (h->sei.picture_timing.timecode_cnt > 0) {
uint32_t *tc_sd;
AVFrameSideData *tcside = av_frame_new_side_data(cur->f,
AVFrameSideData *tcside = av_frame_new_side_data(out,
AV_FRAME_DATA_S12M_TIMECODE,
sizeof(uint32_t)*4);
if (!tcside)