h264: add H264_ prefix to the NAL unit types

This will prevent conflicts e.g. in code that deals with both h264 and
hevc.

libavcodec/h264.h

@@ -28,20 +28,20 @@
 
 /* NAL unit types */
 enum {
-    NAL_SLICE           = 1,
-    NAL_DPA             = 2,
-    NAL_DPB             = 3,
-    NAL_DPC             = 4,
-    NAL_IDR_SLICE       = 5,
-    NAL_SEI             = 6,
-    NAL_SPS             = 7,
-    NAL_PPS             = 8,
-    NAL_AUD             = 9,
-    NAL_END_SEQUENCE    = 10,
-    NAL_END_STREAM      = 11,
-    NAL_FILLER_DATA     = 12,
-    NAL_SPS_EXT         = 13,
-    NAL_AUXILIARY_SLICE = 19,
+    H264_NAL_SLICE           = 1,
+    H264_NAL_DPA             = 2,
+    H264_NAL_DPB             = 3,
+    H264_NAL_DPC             = 4,
+    H264_NAL_IDR_SLICE       = 5,
+    H264_NAL_SEI             = 6,
+    H264_NAL_SPS             = 7,
+    H264_NAL_PPS             = 8,
+    H264_NAL_AUD             = 9,
+    H264_NAL_END_SEQUENCE    = 10,
+    H264_NAL_END_STREAM      = 11,
+    H264_NAL_FILLER_DATA     = 12,
+    H264_NAL_SPS_EXT         = 13,
+    H264_NAL_AUXILIARY_SLICE = 19,
 };
 
 #endif /* AVCODEC_H264_H */

libavcodec/h264_parse.c

@@ -330,12 +330,12 @@ static int decode_extradata_ps(const uint8_t *data, int size, H264ParamSets *ps,
     for (i = 0; i < pkt.nb_nals; i++) {
         H2645NAL *nal = &pkt.nals[i];
         switch (nal->type) {
-        case NAL_SPS:
+        case H264_NAL_SPS:
             ret = ff_h264_decode_seq_parameter_set(&nal->gb, logctx, ps);
             if (ret < 0)
                 goto fail;
             break;
-        case NAL_PPS:
+        case H264_NAL_PPS:
             ret = ff_h264_decode_picture_parameter_set(&nal->gb, logctx, ps,
                                                        nal->size_bits);
             if (ret < 0)

libavcodec/h264_parser.c

@@ -83,14 +83,14 @@ static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
                 state >>= 1;           // 2->1, 1->0, 0->0
         } else if (state <= 5) {
             int nalu_type = buf[i] & 0x1F;
-            if (nalu_type == NAL_SEI || nalu_type == NAL_SPS ||
-                nalu_type == NAL_PPS || nalu_type == NAL_AUD) {
+            if (nalu_type == H264_NAL_SEI || nalu_type == H264_NAL_SPS ||
+                nalu_type == H264_NAL_PPS || nalu_type == H264_NAL_AUD) {
                 if (pc->frame_start_found) {
                     i++;
                     goto found;
                 }
-            } else if (nalu_type == NAL_SLICE || nalu_type == NAL_DPA ||
-                       nalu_type == NAL_IDR_SLICE) {
+            } else if (nalu_type == H264_NAL_SLICE || nalu_type == H264_NAL_DPA ||
+                       nalu_type == H264_NAL_IDR_SLICE) {
                 if (pc->frame_start_found) {
                     state += 8;
                     continue;
@@ -234,10 +234,10 @@ static inline int parse_nal_units(AVCodecParserContext *s,
         --buf;
         src_length = buf_end - buf;
         switch (state & 0x1f) {
-        case NAL_SLICE:
-        case NAL_IDR_SLICE:
+        case H264_NAL_SLICE:
+        case H264_NAL_IDR_SLICE:
             // Do not walk the whole buffer just to decode slice header
-            if ((state & 0x1f) == NAL_IDR_SLICE || ((state >> 5) & 0x3) == 0) {
+            if ((state & 0x1f) == H264_NAL_IDR_SLICE || ((state >> 5) & 0x3) == 0) {
                 /* IDR or disposable slice
                  * No need to decode many bytes because MMCOs shall not be present. */
                 if (src_length > 60)
@@ -262,17 +262,17 @@ static inline int parse_nal_units(AVCodecParserContext *s,
         nal.type    = get_bits(&nal.gb, 5);
 
         switch (nal.type) {
-        case NAL_SPS:
+        case H264_NAL_SPS:
             ff_h264_decode_seq_parameter_set(&nal.gb, avctx, &p->ps);
             break;
-        case NAL_PPS:
+        case H264_NAL_PPS:
             ff_h264_decode_picture_parameter_set(&nal.gb, avctx, &p->ps,
                                                  nal.size_bits);
             break;
-        case NAL_SEI:
+        case H264_NAL_SEI:
             ff_h264_sei_decode(&p->sei, &nal.gb, &p->ps, avctx);
             break;
-        case NAL_IDR_SLICE:
+        case H264_NAL_IDR_SLICE:
             s->key_frame = 1;
 
             p->poc.prev_frame_num        = 0;
@@ -280,7 +280,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             p->poc.prev_poc_msb          =
             p->poc.prev_poc_lsb          = 0;
         /* fall through */
-        case NAL_SLICE:
+        case H264_NAL_SLICE:
             get_ue_golomb(&nal.gb);  // skip first_mb_in_slice
             slice_type   = get_ue_golomb_31(&nal.gb);
             s->pict_type = ff_h264_golomb_to_pict_type[slice_type % 5];
@@ -353,7 +353,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                 }
             }
 
-            if (nal.type == NAL_IDR_SLICE)
+            if (nal.type == H264_NAL_IDR_SLICE)
                 get_ue_golomb(&nal.gb); /* idr_pic_id */
             if (sps->poc_type == 0) {
                 p->poc.poc_lsb = get_bits(&nal.gb, sps->log2_max_poc_lsb);
@@ -382,7 +382,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
              * FIXME: MMCO_RESET could appear in non-first slice.
              *        Maybe, we should parse all undisposable non-IDR slice of this
              *        picture until encountering MMCO_RESET in a slice of it. */
-            if (nal.ref_idc && nal.type != NAL_IDR_SLICE) {
+            if (nal.ref_idc && nal.type != H264_NAL_IDR_SLICE) {
                 got_reset = scan_mmco_reset(s, &nal.gb, avctx);
                 if (got_reset < 0)
                     goto fail;

libavcodec/h264_refs.c

@@ -735,7 +735,7 @@ int ff_h264_decode_ref_pic_marking(const H264Context *h, H264SliceContext *sl,
     MMCO *mmco = sl->mmco;
     int nb_mmco = 0;
 
-    if (h->nal_unit_type == NAL_IDR_SLICE) { // FIXME fields
+    if (h->nal_unit_type == H264_NAL_IDR_SLICE) { // FIXME fields
         skip_bits1(gb); // broken_link
         if (get_bits1(gb)) {
             mmco[0].opcode   = MMCO_LONG;

libavcodec/h264_slice.c

@@ -1374,7 +1374,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
     sl->slice_type     = slice_type;
     sl->slice_type_nos = slice_type & 3;
 
-    if (nal->type  == NAL_IDR_SLICE &&
+    if (nal->type  == H264_NAL_IDR_SLICE &&
         sl->slice_type_nos != AV_PICTURE_TYPE_I) {
         av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
         return AVERROR_INVALIDDATA;
@@ -1427,7 +1427,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
         sl->max_pic_num  = 1 << (sps->log2_max_frame_num + 1);
     }
 
-    if (nal->type == NAL_IDR_SLICE)
+    if (nal->type == H264_NAL_IDR_SLICE)
         get_ue_golomb(&sl->gb); /* idr_pic_id */
 
     if (sps->poc_type == 0) {
@@ -1701,7 +1701,7 @@ int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl,
                sl->mb_y * h->mb_width + sl->mb_x,
                av_get_picture_type_char(sl->slice_type),
                sl->slice_type_fixed ? " fix" : "",
-               nal->type == NAL_IDR_SLICE ? " IDR" : "",
+               nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
                h->poc.frame_num,
                h->cur_pic_ptr->field_poc[0],
                h->cur_pic_ptr->field_poc[1],

libavcodec/h264dec.c

@@ -639,13 +639,13 @@ static int get_last_needed_nal(H264Context *h)
          * which splits NALs strangely if so, when frame threading we
          * can't start the next thread until we've read all of them */
         switch (nal->type) {
-        case NAL_SPS:
-        case NAL_PPS:
+        case H264_NAL_SPS:
+        case H264_NAL_PPS:
             nals_needed = i;
             break;
-        case NAL_DPA:
-        case NAL_IDR_SLICE:
-        case NAL_SLICE:
+        case H264_NAL_DPA:
+        case H264_NAL_IDR_SLICE:
+        case H264_NAL_SLICE:
             init_get_bits(&gb, nal->data + 1, (nal->size - 1) * 8);
             if (!get_ue_golomb(&gb))
                 nals_needed = i;
@@ -686,7 +686,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
         int err;
 
         if (avctx->skip_frame >= AVDISCARD_NONREF &&
-            nal->ref_idc == 0 && nal->type != NAL_SEI)
+            nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
             continue;
 
         // FIXME these should stop being context-global variables
@@ -695,15 +695,15 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
 
         err = 0;
         switch (nal->type) {
-        case NAL_IDR_SLICE:
-            if (nal->type != NAL_IDR_SLICE) {
+        case H264_NAL_IDR_SLICE:
+            if (nal->type != H264_NAL_IDR_SLICE) {
                 av_log(h->avctx, AV_LOG_ERROR,
                        "Invalid mix of idr and non-idr slices\n");
                 ret = -1;
                 goto end;
             }
             idr(h); // FIXME ensure we don't lose some frames if there is reordering
-        case NAL_SLICE:
+        case H264_NAL_SLICE:
             sl->gb = nal->gb;
 
             if ((err = ff_h264_decode_slice_header(h, sl, nal)))
@@ -715,15 +715,15 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
             }
 
             h->cur_pic_ptr->f->key_frame |=
-                (nal->type == NAL_IDR_SLICE) || (h->sei.recovery_point.recovery_frame_cnt >= 0);
+                (nal->type == H264_NAL_IDR_SLICE) || (h->sei.recovery_point.recovery_frame_cnt >= 0);
 
-            if (nal->type == NAL_IDR_SLICE || h->recovery_frame == h->poc.frame_num) {
+            if (nal->type == H264_NAL_IDR_SLICE || h->recovery_frame == h->poc.frame_num) {
                 h->recovery_frame         = -1;
                 h->cur_pic_ptr->recovered = 1;
             }
             // If we have an IDR, all frames after it in decoded order are
             // "recovered".
-            if (nal->type == NAL_IDR_SLICE)
+            if (nal->type == H264_NAL_IDR_SLICE)
                 h->frame_recovered |= FRAME_RECOVERED_IDR;
             h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
 
@@ -751,35 +751,35 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
                     context_count++;
             }
             break;
-        case NAL_DPA:
-        case NAL_DPB:
-        case NAL_DPC:
+        case H264_NAL_DPA:
+        case H264_NAL_DPB:
+        case H264_NAL_DPC:
             avpriv_request_sample(avctx, "data partitioning");
             ret = AVERROR(ENOSYS);
             goto end;
             break;
-        case NAL_SEI:
+        case H264_NAL_SEI:
             ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
             if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
                 goto end;
             break;
-        case NAL_SPS:
+        case H264_NAL_SPS:
             ret = ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps);
             if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
                 goto end;
             break;
-        case NAL_PPS:
+        case H264_NAL_PPS:
             ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
                                                        nal->size_bits);
             if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
                 goto end;
             break;
-        case NAL_AUD:
-        case NAL_END_SEQUENCE:
-        case NAL_END_STREAM:
-        case NAL_FILLER_DATA:
-        case NAL_SPS_EXT:
-        case NAL_AUXILIARY_SLICE:
+        case H264_NAL_AUD:
+        case H264_NAL_END_SEQUENCE:
+        case H264_NAL_END_STREAM:
+        case H264_NAL_FILLER_DATA:
+        case H264_NAL_SPS_EXT:
+        case H264_NAL_AUXILIARY_SLICE:
             break;
         default:
             av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
@@ -912,7 +912,7 @@ out:
     if (buf_index < 0)
         return AVERROR_INVALIDDATA;
 
-    if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
+    if (!h->cur_pic_ptr && h->nal_unit_type == H264_NAL_END_SEQUENCE) {
         buf_size = 0;
         goto out;
     }

libavcodec/omx.c

@@ -703,7 +703,7 @@ static av_cold int omx_encode_init(AVCodecContext *avctx)
                          nals[avctx->extradata[i + 4] & 0x1f]++;
                      }
                 }
-                if (nals[NAL_SPS] && nals[NAL_PPS])
+                if (nals[H264_NAL_SPS] && nals[H264_NAL_PPS])
                     break;
             } else {
                 if (avctx->extradata_size > 0)

libavcodec/vaapi_encode_h264.c

@@ -283,7 +283,7 @@ static void vaapi_encode_h264_write_sps(PutBitContext *pbc,
     VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
     int i;
 
-    vaapi_encode_h264_write_nal_header(pbc, NAL_SPS, 3);
+    vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SPS, 3);
 
     u(8, mseq_var(profile_idc));
     u(1, mseq_var(constraint_set0_flag));
@@ -368,7 +368,7 @@ static void vaapi_encode_h264_write_pps(PutBitContext *pbc,
     VAAPIEncodeH264Context            *priv = ctx->priv_data;
     VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
 
-    vaapi_encode_h264_write_nal_header(pbc, NAL_PPS, 3);
+    vaapi_encode_h264_write_nal_header(pbc, H264_NAL_PPS, 3);
 
     ue(vpic_var(pic_parameter_set_id));
     ue(vpic_var(seq_parameter_set_id));
@@ -642,7 +642,7 @@ static void vaapi_encode_h264_write_sei(PutBitContext *pbc,
                           VAAPIEncodeContext *ctx,
                           VAAPIEncodePicture *pic) = NULL;
 
-    vaapi_encode_h264_write_nal_header(pbc, NAL_SEI, 0);
+    vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SEI, 0);
 
     for (payload_type = 0; payload_type < 64; payload_type++) {
         switch (payload_type) {
@@ -1010,9 +1010,9 @@ static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
     mslice = &pslice->misc_slice_params;
 
     if (pic->type == PICTURE_TYPE_IDR)
-        mslice->nal_unit_type = NAL_IDR_SLICE;
+        mslice->nal_unit_type = H264_NAL_IDR_SLICE;
     else
-        mslice->nal_unit_type = NAL_SLICE;
+        mslice->nal_unit_type = H264_NAL_SLICE;
 
     switch (pic->type) {
     case PICTURE_TYPE_IDR: