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codecparsers: h264: record ref_pic_list_modification().

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This commit is contained in:
Gwenole Beauchesne 2011-11-22 09:47:58 +01:00 committed by Thibault Saunier
parent 99101a5824
commit 177451c921
2 changed files with 71 additions and 57 deletions
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72
gst-libs/gst/codecparsers/gsth264parser.c
View File

@ -743,60 +743,56 @@ error:
} }
static gboolean static gboolean
slice_parse_ref_pic_list_modification (GstH264SliceHdr * slice, NalReader * nr) slice_parse_ref_pic_list_modification_1 (GstH264SliceHdr * slice,
NalReader * nr, guint list)
{ {
GST_DEBUG ("parsing \"Reference picture list modification\""); GstH264RefPicListModification *entries;
guint8 *ref_pic_list_modification_flag;
if (!GST_H264_IS_I_SLICE (slice) && !GST_H264_IS_SI_SLICE (slice)) {
guint8 ref_pic_list_modification_flag_l0;
guint32 modification_of_pic_nums_idc; guint32 modification_of_pic_nums_idc;
guint i = 0;
READ_UINT8 (nr, ref_pic_list_modification_flag_l0, 1); if (list == 0) {
if (ref_pic_list_modification_flag_l0) entries = slice->ref_pic_list_modification_l0;
ref_pic_list_modification_flag = &slice->ref_pic_list_modification_flag_l0;
} else {
entries = slice->ref_pic_list_modification_l1;
ref_pic_list_modification_flag = &slice->ref_pic_list_modification_flag_l1;
}
READ_UINT8 (nr, *ref_pic_list_modification_flag, 1);
do { do {
READ_UE (nr, modification_of_pic_nums_idc); READ_UE (nr, modification_of_pic_nums_idc);
if (modification_of_pic_nums_idc == 0 if (modification_of_pic_nums_idc == 0 || modification_of_pic_nums_idc == 1) {
|| modification_of_pic_nums_idc == 1) { READ_UE_ALLOWED (nr, entries[i].value.abs_diff_pic_num_minus1, 0,
guint32 abs_diff_pic_num_minus1 G_GNUC_UNUSED;
READ_UE_ALLOWED (nr, abs_diff_pic_num_minus1, 0,
slice->max_pic_num - 1); slice->max_pic_num - 1);
} else if (modification_of_pic_nums_idc == 2) { } else if (modification_of_pic_nums_idc == 2) {
guint32 long_term_pic_num; READ_UE (nr, entries[i].value.long_term_pic_num);
READ_UE (nr, long_term_pic_num);
} }
} while (modification_of_pic_nums_idc != 3); } while (modification_of_pic_nums_idc != 3);
}
if (GST_H264_IS_B_SLICE (slice)) {
guint8 ref_pic_list_modification_flag_l1;
guint32 modification_of_pic_nums_idc;
READ_UINT8 (nr, ref_pic_list_modification_flag_l1, 1);
if (ref_pic_list_modification_flag_l1)
do {
READ_UE (nr, modification_of_pic_nums_idc);
if (modification_of_pic_nums_idc == 0
|| modification_of_pic_nums_idc == 1) {
guint32 abs_diff_num_minus1;
READ_UE (nr, abs_diff_num_minus1);
} else if (modification_of_pic_nums_idc == 2) {
guint32 long_term_pic_num;
READ_UE (nr, long_term_pic_num);
}
} while (modification_of_pic_nums_idc != 3);
}
return TRUE; return TRUE;
error: error:
GST_WARNING ("error parsing \"Reference picture list modification\""); GST_WARNING ("error parsing \"Reference picture list %u modification\"",
list);
return FALSE; return FALSE;
} }
static gboolean
slice_parse_ref_pic_list_modification (GstH264SliceHdr * slice, NalReader * nr)
{
if (!GST_H264_IS_I_SLICE (slice) && !GST_H264_IS_SI_SLICE (slice)) {
if (!slice_parse_ref_pic_list_modification_1 (slice, nr, 0))
return FALSE;
}
if (GST_H264_IS_B_SLICE (slice)) {
if (!slice_parse_ref_pic_list_modification_1 (slice, nr, 1))
return FALSE;
}
return TRUE;
}
static gboolean static gboolean
gst_h264_slice_parse_dec_ref_pic_marking (GstH264SliceHdr * slice, gst_h264_slice_parse_dec_ref_pic_marking (GstH264SliceHdr * slice,
GstH264NalUnit * nalu, NalReader * nr) GstH264NalUnit * nalu, NalReader * nr)

18
gst-libs/gst/codecparsers/gsth264parser.h
View File

@ -177,6 +177,7 @@ typedef struct _GstH264PPS GstH264PPS;
typedef struct _GstH264HRDParams GstH264HRDParams; typedef struct _GstH264HRDParams GstH264HRDParams;
typedef struct _GstH264VUIParams GstH264VUIParams; typedef struct _GstH264VUIParams GstH264VUIParams;
typedef struct _GstH264RefPicListModification GstH264RefPicListModification;
typedef struct _GstH264DecRefPicMarking GstH264DecRefPicMarking; typedef struct _GstH264DecRefPicMarking GstH264DecRefPicMarking;
typedef struct _GstH264RefPicMarking GstH264RefPicMarking; typedef struct _GstH264RefPicMarking GstH264RefPicMarking;
typedef struct _GstH264PredWeightTable GstH264PredWeightTable; typedef struct _GstH264PredWeightTable GstH264PredWeightTable;
@ -485,6 +486,18 @@ struct _GstH264PPS
gboolean valid; gboolean valid;
}; };
struct _GstH264RefPicListModification
{
guint8 modification_of_pic_nums_idc;
union
{
/* if modification_of_pic_nums_idc == 0 || 1 */
guint32 abs_diff_pic_num_minus1;
/* if modification_of_pic_nums_idc == 2 */
guint32 long_term_pic_num;
} value;
};
struct _GstH264PredWeightTable struct _GstH264PredWeightTable
{ {
guint8 luma_log2_weight_denom; guint8 luma_log2_weight_denom;
@ -559,6 +572,11 @@ struct _GstH264SliceHdr
guint8 num_ref_idx_l0_active_minus1; guint8 num_ref_idx_l0_active_minus1;
guint8 num_ref_idx_l1_active_minus1; guint8 num_ref_idx_l1_active_minus1;
guint8 ref_pic_list_modification_flag_l0;
GstH264RefPicListModification ref_pic_list_modification_l0[32];
guint8 ref_pic_list_modification_flag_l1;
GstH264RefPicListModification ref_pic_list_modification_l1[32];
GstH264PredWeightTable pred_weight_table; GstH264PredWeightTable pred_weight_table;
/* if nal_unit.ref_idc != 0 */ /* if nal_unit.ref_idc != 0 */
GstH264DecRefPicMarking dec_ref_pic_marking; GstH264DecRefPicMarking dec_ref_pic_marking;