h264: Add Intra and Constrained Baseline profiles to avctx.profile

libavcodec/avcodec.h

@@ -2260,14 +2260,21 @@ typedef struct AVCodecContext {
 #define FF_PROFILE_DTS_HD_HRA  50
 #define FF_PROFILE_DTS_HD_MA   60
 
-#define FF_PROFILE_H264_BASELINE    66
-#define FF_PROFILE_H264_MAIN        77
-#define FF_PROFILE_H264_EXTENDED    88
-#define FF_PROFILE_H264_HIGH        100
-#define FF_PROFILE_H264_HIGH_10     110
-#define FF_PROFILE_H264_HIGH_422    122
-#define FF_PROFILE_H264_HIGH_444    244
-#define FF_PROFILE_H264_CAVLC_444   44
+#define FF_PROFILE_H264_CONSTRAINED  (1<<9)  // 8+1; constraint_set1_flag
+#define FF_PROFILE_H264_INTRA        (1<<11) // 8+3; constraint_set3_flag
+
+#define FF_PROFILE_H264_BASELINE             66
+#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED)
+#define FF_PROFILE_H264_MAIN                 77
+#define FF_PROFILE_H264_EXTENDED             88
+#define FF_PROFILE_H264_HIGH                 100
+#define FF_PROFILE_H264_HIGH_10              110
+#define FF_PROFILE_H264_HIGH_10_INTRA        (110|FF_PROFILE_H264_INTRA)
+#define FF_PROFILE_H264_HIGH_422             122
+#define FF_PROFILE_H264_HIGH_422_INTRA       (122|FF_PROFILE_H264_INTRA)
+#define FF_PROFILE_H264_HIGH_444_PREDICTIVE  244
+#define FF_PROFILE_H264_HIGH_444_INTRA       (244|FF_PROFILE_H264_INTRA)
+#define FF_PROFILE_H264_CAVLC_444            44
 
     /**
      * level

libavcodec/h264.c

@@ -1677,6 +1677,33 @@ static void clone_slice(H264Context *dst, H264Context *src)
     memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
 }
 
+/**
+ * computes profile from profile_idc and constraint_set?_flags
+ *
+ * @param sps SPS
+ *
+ * @return profile as defined by FF_PROFILE_H264_*
+ */
+int ff_h264_get_profile(SPS *sps)
+{
+    int profile = sps->profile_idc;
+
+    switch(sps->profile_idc) {
+    case FF_PROFILE_H264_BASELINE:
+        // constraint_set1_flag set to 1
+        profile |= (sps->constraint_set_flags & 1<<1) ? FF_PROFILE_H264_CONSTRAINED : 0;
+        break;
+    case FF_PROFILE_H264_HIGH_10:
+    case FF_PROFILE_H264_HIGH_422:
+    case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
+        // constraint_set3_flag set to 1
+        profile |= (sps->constraint_set_flags & 1<<3) ? FF_PROFILE_H264_INTRA : 0;
+        break;
+    }
+
+    return profile;
+}
+
 /**
  * decodes a slice header.
  * This will also call MPV_common_init() and frame_start() as needed.
@@ -1756,7 +1783,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     }
     h->sps = *h0->sps_buffers[h->pps.sps_id];
 
-    s->avctx->profile = h->sps.profile_idc;
+    s->avctx->profile = ff_h264_get_profile(&h->sps);
     s->avctx->level   = h->sps.level_idc;
     s->avctx->refs    = h->sps.ref_frame_count;
 

libavcodec/h264.h

@@ -209,6 +209,7 @@ typedef struct SPS{
     int bit_depth_luma;                ///< bit_depth_luma_minus8 + 8
     int bit_depth_chroma;              ///< bit_depth_chroma_minus8 + 8
     int residual_color_transform_flag; ///< residual_colour_transform_flag
+    int constraint_set_flags;          ///< constraint_set[0-3]_flag
 }SPS;
 
 /**
@@ -611,6 +612,11 @@ int ff_h264_decode_sei(H264Context *h);
  */
 int ff_h264_decode_seq_parameter_set(H264Context *h);
 
+/**
+ * compute profile from sps
+ */
+int ff_h264_get_profile(SPS *sps);
+
 /**
  * Decode PPS
  */

libavcodec/h264_parser.c

@@ -187,7 +187,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             h->sps = *h->sps_buffers[h->pps.sps_id];
             h->frame_num = get_bits(&h->s.gb, h->sps.log2_max_frame_num);
 
-            avctx->profile = h->sps.profile_idc;
+            avctx->profile = ff_h264_get_profile(&h->sps);
             avctx->level   = h->sps.level_idc;
 
             if(h->sps.frame_mbs_only_flag){

libavcodec/h264_ps.c

@@ -267,16 +267,16 @@ static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_s
 
 int ff_h264_decode_seq_parameter_set(H264Context *h){
     MpegEncContext * const s = &h->s;
-    int profile_idc, level_idc;
+    int profile_idc, level_idc, constraint_set_flags = 0;
     unsigned int sps_id;
     int i;
     SPS *sps;
 
     profile_idc= get_bits(&s->gb, 8);
-    get_bits1(&s->gb);   //constraint_set0_flag
-    get_bits1(&s->gb);   //constraint_set1_flag
-    get_bits1(&s->gb);   //constraint_set2_flag
-    get_bits1(&s->gb);   //constraint_set3_flag
+    constraint_set_flags |= get_bits1(&s->gb) << 0;   //constraint_set0_flag
+    constraint_set_flags |= get_bits1(&s->gb) << 1;   //constraint_set1_flag
+    constraint_set_flags |= get_bits1(&s->gb) << 2;   //constraint_set2_flag
+    constraint_set_flags |= get_bits1(&s->gb) << 3;   //constraint_set3_flag
     get_bits(&s->gb, 4); // reserved
     level_idc= get_bits(&s->gb, 8);
     sps_id= get_ue_golomb_31(&s->gb);
@@ -291,6 +291,7 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
 
     sps->time_offset_length = 24;
     sps->profile_idc= profile_idc;
+    sps->constraint_set_flags = constraint_set_flags;
     sps->level_idc= level_idc;
 
     memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));