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-rw-r--r--src/libvdpau/nal_parser.c189
-rw-r--r--src/libvdpau/nal_parser.h82
2 files changed, 256 insertions, 15 deletions
diff --git a/src/libvdpau/nal_parser.c b/src/libvdpau/nal_parser.c
index 7422bd118..ebe9d562f 100644
--- a/src/libvdpau/nal_parser.c
+++ b/src/libvdpau/nal_parser.c
@@ -40,7 +40,9 @@ int parse_nal_header(struct buf_reader *buf, struct nal_unit *nal);
uint8_t parse_sps(struct buf_reader *buf, struct seq_parameter_set_rbsp *sps);
uint8_t parse_pps(struct buf_reader *buf, struct pic_parameter_set_rbsp *pps);
uint8_t parse_slice_header(struct buf_reader *buf, struct nal_unit *nal);
-
+void parse_ref_pic_list_reordering(struct buf_reader *buf, struct nal_unit *nal);
+void parse_pred_weight_table(struct buf_reader *buf, struct nal_unit *nal);
+void parse_dec_ref_pic_marking(struct buf_reader *buf, struct nal_unit *nal);
static void decode_nal(uint8_t **ret, int *len_ret, uint8_t *buf, int buf_len)
{
@@ -433,7 +435,8 @@ uint8_t parse_slice_header(struct buf_reader *buf, struct nal_unit *nal)
return -1;
slc->first_mb_in_slice = read_exp_golomb(buf);
- slc->slice_type = read_exp_golomb(buf);
+ /* we do some parsing on the slice type, because the list is doubled */
+ slc->slice_type = slice_type(read_exp_golomb(buf));
slc->pic_parameter_set_id = read_exp_golomb(buf);
slc->frame_num = read_bits(buf, sps->log2_max_frame_num_minus4 + 4);
if(!sps->frame_mbs_only_flag) {
@@ -459,11 +462,182 @@ uint8_t parse_slice_header(struct buf_reader *buf, struct nal_unit *nal)
if(pps->pic_order_present_flag && !slc->field_pic_flag)
slc->delta_pic_order_cnt[1] = read_exp_golomb_s(buf);
}
- /* do not need more information for packetizing */
+
+ if(pps->redundant_pic_cnt_present_flag == 1) {
+ slc->redundant_pic_cnt = read_exp_golomb(buf);
+ }
+
+ if(slc->slice_type == SLICE_B)
+ slc->direct_spatial_mv_pred_flag = read_bits(buf, 1);
+
+ if(slc->slice_type == SLICE_P ||
+ slc->slice_type == SLICE_SP ||
+ slc->slice_type == SLICE_B) {
+ slc->num_ref_idx_active_override_flag = read_bits(buf, 1);
+
+ if(slc->num_ref_idx_active_override_flag == 1) {
+ slc->num_ref_idx_l0_active_minus1 = read_exp_golomb(buf);
+
+ if(slc->slice_type == SLICE_B) {
+ slc->num_ref_idx_l1_active_minus1 = read_exp_golomb(buf);
+ }
+ }
+ }
+
+ /* --- ref_pic_list_reordering --- */
+ parse_ref_pic_list_reordering(buf, nal);
+
+ /* --- pred_weight_table --- */
+ if((pps->weighted_pred_flag &&
+ (slc->slice_type == SLICE_P || slc->slice_type == SLICE_SP)) ||
+ (pps->weighted_bipred_idc == 1 && slc->slice_type == SLICE_B)) {
+ parse_pred_weight_table(buf, nal);
+ }
+
+ /* --- dec_ref_pic_marking --- */
+ if(nal->nal_ref_idc != 0)
+ parse_dec_ref_pic_marking(buf, nal);
return 0;
}
+void parse_ref_pic_list_reordering(struct buf_reader *buf, struct nal_unit *nal)
+{
+ struct seq_parameter_set_rbsp *sps = nal->sps;
+ struct pic_parameter_set_rbsp *pps = nal->pps;
+ struct slice_header *slc = nal->slc;
+ if(!sps || !pps)
+ return;
+
+ if(slc->slice_type != SLICE_I && slc->slice_type != SLICE_SI) {
+ slc->ref_pic_list_reordering.ref_pic_list_reordering_flag_l0 = read_bits(buf, 1);
+
+ if(slc->ref_pic_list_reordering.ref_pic_list_reordering_flag_l0 == 1) {
+ do {
+ slc->ref_pic_list_reordering.reordering_of_pic_nums_idc = read_exp_golomb(buf);
+
+ if(slc->ref_pic_list_reordering.reordering_of_pic_nums_idc == 0 ||
+ slc->ref_pic_list_reordering.reordering_of_pic_nums_idc == 1) {
+ slc->ref_pic_list_reordering.abs_diff_pic_num_minus1 = read_exp_golomb(buf);
+ } else if (slc->ref_pic_list_reordering.reordering_of_pic_nums_idc == 2) {
+ slc->ref_pic_list_reordering.long_term_pic_num = read_exp_golomb(buf);
+ }
+ } while (slc->ref_pic_list_reordering.reordering_of_pic_nums_idc != 3);
+ }
+ }
+
+ if(slc->slice_type == SLICE_B) {
+ slc->ref_pic_list_reordering.ref_pic_list_reordering_flag_l1 = read_bits(buf, 1);
+
+ if(slc->ref_pic_list_reordering.ref_pic_list_reordering_flag_l1 == 1) {
+ do {
+ slc->ref_pic_list_reordering.reordering_of_pic_nums_idc = read_exp_golomb(buf);
+
+ if(slc->ref_pic_list_reordering.reordering_of_pic_nums_idc == 0 ||
+ slc->ref_pic_list_reordering.reordering_of_pic_nums_idc == 1) {
+ slc->ref_pic_list_reordering.abs_diff_pic_num_minus1 = read_exp_golomb(buf);
+ } else if (slc->ref_pic_list_reordering.reordering_of_pic_nums_idc == 2) {
+ slc->ref_pic_list_reordering.long_term_pic_num = read_exp_golomb(buf);
+ }
+ } while (slc->ref_pic_list_reordering.reordering_of_pic_nums_idc != 3);
+ }
+ }
+}
+
+void parse_pred_weight_table(struct buf_reader *buf, struct nal_unit *nal)
+{
+ struct seq_parameter_set_rbsp *sps = nal->sps;
+ struct pic_parameter_set_rbsp *pps = nal->pps;
+ struct slice_header *slc = nal->slc;
+ if(!sps || !pps)
+ return;
+
+ nal->slc->pred_weight_table.luma_log2_weight_denom = read_exp_golomb(buf);
+
+ if(sps->chroma_format_idc != 0)
+ nal->slc->pred_weight_table.chroma_log2_weight_denom = read_exp_golomb(buf);
+
+ int i;
+ for(i = 0; i <= pps->num_ref_idx_l0_active_minus1; i++) {
+ uint8_t luma_weight_l0_flag = read_bits(buf, 1);
+
+ if(luma_weight_l0_flag == 1 ) {
+ nal->slc->pred_weight_table.luma_weight_l0[i] = read_exp_golomb_s(buf);
+ nal->slc->pred_weight_table.luma_offset_l0[i] = read_exp_golomb_s(buf);
+ }
+
+ if(sps->chroma_format_idc != 0) {
+ uint8_t chroma_weight_l0_flag = read_bits(buf, 1);
+
+ if(chroma_weight_l0_flag == 1 ) {
+ int j;
+ for(j = 0; j < 2 ; j++) {
+ nal->slc->pred_weight_table.chroma_weight_l0[i][j] = read_exp_golomb_s(buf);
+ nal->slc->pred_weight_table.chroma_offset_l0[i][j] = read_exp_golomb_s(buf);
+ }
+ }
+ }
+ }
+
+ if(slc->slice_type == SLICE_B) {
+ for(i = 0; i <= pps->num_ref_idx_l1_active_minus1; i++) {
+ uint8_t luma_weight_l1_flag = read_bits(buf, 1);
+
+ if(luma_weight_l1_flag == 1 ) {
+ nal->slc->pred_weight_table.luma_weight_l1[i] = read_exp_golomb_s(buf);
+ nal->slc->pred_weight_table.luma_offset_l1[i] = read_exp_golomb_s(buf);
+ }
+
+ if(sps->chroma_format_idc != 0) {
+ uint8_t chroma_weight_l1_flag = read_bits(buf, 1);
+
+ if(chroma_weight_l1_flag == 1 ) {
+ int j;
+ for(j = 0; j < 2 ; j++) {
+ nal->slc->pred_weight_table.chroma_weight_l1[i][j] = read_exp_golomb_s(buf);
+ nal->slc->pred_weight_table.chroma_offset_l1[i][j] = read_exp_golomb_s(buf);
+ }
+ }
+ }
+ }
+ }
+}
+
+void parse_dec_ref_pic_marking(struct buf_reader *buf, struct nal_unit *nal)
+{
+ struct seq_parameter_set_rbsp *sps = nal->sps;
+ struct pic_parameter_set_rbsp *pps = nal->pps;
+ struct slice_header *slc = nal->slc;
+ if(!sps || !pps)
+ return;
+
+ if(nal->nal_unit_type == NAL_SLICE_IDR) {
+ slc->dec_ref_pic_marking.no_output_of_prior_pics_flag = read_bits(buf, 1);
+ slc->dec_ref_pic_marking.long_term_reference_flag = read_bits(buf, 1);
+ } else {
+ slc->dec_ref_pic_marking.adaptive_ref_pic_marking_mode_flag = read_bits(buf, 1);
+
+ if(slc->dec_ref_pic_marking.adaptive_ref_pic_marking_mode_flag) {
+ do {
+ slc->dec_ref_pic_marking.memory_management_control_operation = read_exp_golomb(buf);
+
+ if(slc->dec_ref_pic_marking.memory_management_control_operation == 1 ||
+ slc->dec_ref_pic_marking.memory_management_control_operation == 3)
+ slc->dec_ref_pic_marking.difference_of_pic_nums_minus1 = read_exp_golomb(buf);
+
+ if(slc->dec_ref_pic_marking.memory_management_control_operation == 2)
+ slc->dec_ref_pic_marking.long_term_pic_num = read_exp_golomb(buf);
+
+ if(slc->dec_ref_pic_marking.memory_management_control_operation == 3 ||
+ slc->dec_ref_pic_marking.memory_management_control_operation == 6)
+ slc->dec_ref_pic_marking.long_term_frame_idx = read_exp_golomb(buf);
+
+ if(slc->dec_ref_pic_marking.memory_management_control_operation == 4)
+ slc->dec_ref_pic_marking.max_long_term_frame_idx_plus1 = read_exp_golomb(buf);
+ } while(slc->dec_ref_pic_marking.memory_management_control_operation != 0);
+ }
+ }
+}
/* ----------------- NAL parser ----------------- */
@@ -642,15 +816,6 @@ int parse_nal(uint8_t *buf, int buf_len, struct nal_parser *parser)
if(parser->current_nal->pps == NULL)
parser->current_nal->pps = parser->last_nal->pps;
- /*if(ret)
- parser->slice = 0;*/
- /*if(parser->slice && parser->have_top && parser->field != 0) {
- parser->have_frame = 1;
- parser->have_top = 0;
- parser->slice = 0;
- return ret;
- }*/
-
/* increase the slice_cnt until a new frame is detected */
if(!ret)
parser->slice_cnt++;
diff --git a/src/libvdpau/nal_parser.h b/src/libvdpau/nal_parser.h
index fed12ff0d..609f700a1 100644
--- a/src/libvdpau/nal_parser.h
+++ b/src/libvdpau/nal_parser.h
@@ -22,6 +22,19 @@ enum nal_unit_types {
NAL_SPS_EXT
};
+/* slice types repeat from 5-9, we
+ * need a helper function for comparison
+ */
+enum slice_types {
+ SLICE_P = 0,
+ SLICE_B,
+ SLICE_I,
+ SLICE_SP,
+ SLICE_SI
+};
+
+static inline uint32_t slice_type(uint32_t slice_type) { return (slice_type < 10 ? slice_type % 5 : slice_type); }
+
struct nal_unit {
uint8_t nal_ref_idc; // 0x03
uint8_t nal_unit_type; // 0x1f
@@ -145,10 +158,73 @@ struct slice_header {
/* sps->pic_order_cnt_type == 1 && !sps->delta_pic_order_always_zero_flag */
int32_t delta_pic_order_cnt[2];
- /* not needed for packetizing */
- /*int32_t redundant_pic_cnt;
- uint8_t direct_spatial_mv_pred_flag;*/
+ /* pps->redundant_pic_cnt_present_flag == 1 */
+ int32_t redundant_pic_cnt;
+
+ /* slice_type == B */
+ uint8_t direct_spatial_mv_pred_flag;
+
+ /* slice_type == P, SP, B */
+ uint8_t num_ref_idx_active_override_flag;
+ /* num_ref_idx_active_override_flag == 1 */
+ uint32_t num_ref_idx_l0_active_minus1;
+ /* slice type == B */
+ uint32_t num_ref_idx_l1_active_minus1;
+
+ /* ref_pic_list_reordering */
+ union {
+ /* slice_type != I && slice_type != SI */
+ uint8_t ref_pic_list_reordering_flag_l0;
+
+ /* slice_type == B */
+ uint8_t ref_pic_list_reordering_flag_l1;
+
+ /* ref_pic_list_reordering_flag_l0 == 1 */
+ uint32_t reordering_of_pic_nums_idc;
+
+ /* reordering_of_pic_nums_idc == 0, 1 */
+ uint32_t abs_diff_pic_num_minus1;
+
+ /* reordering_of_pic_nums_idc == 2) */
+ uint32_t long_term_pic_num;
+ } ref_pic_list_reordering;
+
+ /* pred_weight_table */
+ union {
+ uint32_t luma_log2_weight_denom;
+
+ /* chroma_format_idc != 0 */
+ uint32_t chroma_log2_weight_denom;
+
+ int32_t luma_weight_l0[31];
+ int32_t luma_offset_l0[31];
+
+ int32_t chroma_weight_l0[31][2];
+ int32_t chroma_offset_l0[31][2];
+
+ int32_t luma_weight_l1[31];
+ int32_t luma_offset_l1[31];
+
+ int32_t chroma_weight_l1[31][2];
+ int32_t chroma_offset_l1[31][2];
+ } pred_weight_table;
+
+ /* def_rec_pic_marking */
+ union {
+
+ /* nal_unit_type == NAL_SLICE_IDR */
+ uint8_t no_output_of_prior_pics_flag;
+ uint8_t long_term_reference_flag;
+
+ /* else */
+ uint8_t adaptive_ref_pic_marking_mode_flag;
+ uint32_t memory_management_control_operation;
+ uint32_t difference_of_pic_nums_minus1;
+ uint32_t long_term_pic_num;
+ uint32_t long_term_frame_idx;
+ uint32_t max_long_term_frame_idx_plus1;
+ } dec_ref_pic_marking;
};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-23 05:02:34 +0000