X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fhuffyuv.c;h=d3f6401b3d576ab20aab0079de6b844c752792ac;hb=f52901b305fd8d160e6ff589b5ba30cb9ecba08d;hp=3a252f6824a4a814e1e43cd14ffe438c5b6673f3;hpb=bf1a5a46d68d0dba66a5f43e9000ce937709ffd6;p=ffmpeg

diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
index 3a252f6824a..d3f6401b3d5 100644
--- a/libavcodec/huffyuv.c
+++ b/libavcodec/huffyuv.c
@@ -3,6 +3,9 @@
  *
  * Copyright (c) 2002-2003 Michael Niedermayer <michaelni@gmx.at>
  *
+ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
+ * the algorithm used
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,19 +21,17 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
- * the algorithm used
  */
 
 /**
- * @file huffyuv.c
+ * @file libavcodec/huffyuv.c
  * huffyuv codec for libavcodec.
  */
 
 #include "avcodec.h"
 #include "bitstream.h"
 #include "dsputil.h"
+#include "mathops.h"
 
 #define VLC_BITS 11
 
@@ -70,7 +71,8 @@ typedef struct HYuvContext{
     uint64_t stats[3][256];
     uint8_t len[3][256];
     uint32_t bits[3][256];
-    VLC vlc[3];
+    uint32_t pix_bgr_map[1<<VLC_BITS];
+    VLC vlc[6];                             //Y,U,V,YY,YU,YV
     AVFrame picture;
     uint8_t *bitstream_buffer;
     unsigned int bitstream_buffer_size;
@@ -260,63 +262,132 @@ static int generate_bits_table(uint32_t *dst, uint8_t *len_table){
     return 0;
 }
 
-#ifdef CONFIG_ENCODERS
+#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
+typedef struct {
+    uint64_t val;
+    int name;
+} HeapElem;
+
+static void heap_sift(HeapElem *h, int root, int size)
+{
+    while(root*2+1 < size) {
+        int child = root*2+1;
+        if(child < size-1 && h[child].val > h[child+1].val)
+            child++;
+        if(h[root].val > h[child].val) {
+            FFSWAP(HeapElem, h[root], h[child]);
+            root = child;
+        } else
+            break;
+    }
+}
+
 static void generate_len_table(uint8_t *dst, uint64_t *stats, int size){
-    uint64_t counts[2*size];
+    HeapElem h[size];
     int up[2*size];
+    int len[2*size];
     int offset, i, next;
 
     for(offset=1; ; offset<<=1){
         for(i=0; i<size; i++){
-            counts[i]= stats[i] + offset - 1;
+            h[i].name = i;
+            h[i].val = (stats[i] << 8) + offset;
+        }
+        for(i=size/2-1; i>=0; i--)
+            heap_sift(h, i, size);
+
+        for(next=size; next<size*2-1; next++){
+            // merge the two smallest entries, and put it back in the heap
+            uint64_t min1v = h[0].val;
+            up[h[0].name] = next;
+            h[0].val = INT64_MAX;
+            heap_sift(h, 0, size);
+            up[h[0].name] = next;
+            h[0].name = next;
+            h[0].val += min1v;
+            heap_sift(h, 0, size);
         }
 
-        for(next=size; next<size*2; next++){
-            uint64_t min1, min2;
-            int min1_i, min2_i;
-
-            min1=min2= INT64_MAX;
-            min1_i= min2_i=-1;
-
-            for(i=0; i<next; i++){
-                if(min2 > counts[i]){
-                    if(min1 > counts[i]){
-                        min2= min1;
-                        min2_i= min1_i;
-                        min1= counts[i];
-                        min1_i= i;
+        len[2*size-2] = 0;
+        for(i=2*size-3; i>=size; i--)
+            len[i] = len[up[i]] + 1;
+        for(i=0; i<size; i++) {
+            dst[i] = len[up[i]] + 1;
+            if(dst[i] >= 32) break;
+        }
+        if(i==size) break;
+    }
+}
+#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
+
+static void generate_joint_tables(HYuvContext *s){
+    uint16_t symbols[1<<VLC_BITS];
+    uint16_t bits[1<<VLC_BITS];
+    uint8_t len[1<<VLC_BITS];
+    if(s->bitstream_bpp < 24){
+        int p, i, y, u;
+        for(p=0; p<3; p++){
+            for(i=y=0; y<256; y++){
+                int len0 = s->len[0][y];
+                int limit = VLC_BITS - len0;
+                if(limit <= 0)
+                    continue;
+                for(u=0; u<256; u++){
+                    int len1 = s->len[p][u];
+                    if(len1 > limit)
+                        continue;
+                    len[i] = len0 + len1;
+                    bits[i] = (s->bits[0][y] << len1) + s->bits[p][u];
+                    symbols[i] = (y<<8) + u;
+                    if(symbols[i] != 0xffff) // reserved to mean "invalid"
+                        i++;
+                }
+            }
+            free_vlc(&s->vlc[3+p]);
+            init_vlc_sparse(&s->vlc[3+p], VLC_BITS, i, len, 1, 1, bits, 2, 2, symbols, 2, 2, 0);
+        }
+    }else{
+        uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
+        int i, b, g, r, code;
+        int p0 = s->decorrelate;
+        int p1 = !s->decorrelate;
+        // restrict the range to +/-16 becaues that's pretty much guaranteed to
+        // cover all the combinations that fit in 11 bits total, and it doesn't
+        // matter if we miss a few rare codes.
+        for(i=0, g=-16; g<16; g++){
+            int len0 = s->len[p0][g&255];
+            int limit0 = VLC_BITS - len0;
+            if(limit0 < 2)
+                continue;
+            for(b=-16; b<16; b++){
+                int len1 = s->len[p1][b&255];
+                int limit1 = limit0 - len1;
+                if(limit1 < 1)
+                    continue;
+                code = (s->bits[p0][g&255] << len1) + s->bits[p1][b&255];
+                for(r=-16; r<16; r++){
+                    int len2 = s->len[2][r&255];
+                    if(len2 > limit1)
+                        continue;
+                    len[i] = len0 + len1 + len2;
+                    bits[i] = (code << len2) + s->bits[2][r&255];
+                    if(s->decorrelate){
+                        map[i][G] = g;
+                        map[i][B] = g+b;
+                        map[i][R] = g+r;
                     }else{
-                        min2= counts[i];
-                        min2_i= i;
+                        map[i][B] = g;
+                        map[i][G] = b;
+                        map[i][R] = r;
                     }
+                    i++;
                 }
             }
-
-            if(min2==INT64_MAX) break;
-
-            counts[next]= min1 + min2;
-            counts[min1_i]=
-            counts[min2_i]= INT64_MAX;
-            up[min1_i]=
-            up[min2_i]= next;
-            up[next]= -1;
-        }
-
-        for(i=0; i<size; i++){
-            int len;
-            int index=i;
-
-            for(len=0; up[index] != -1; len++)
-                index= up[index];
-
-            if(len >= 32) break;
-
-            dst[i]= len;
         }
-        if(i==size) break;
+        free_vlc(&s->vlc[3]);
+        init_vlc(&s->vlc[3], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0);
     }
 }
-#endif /* CONFIG_ENCODERS */
 
 static int read_huffman_tables(HYuvContext *s, uint8_t *src, int length){
     GetBitContext gb;
@@ -339,6 +410,8 @@ printf("%6X, %2d,  %3d\n", s->bits[i][j], s->len[i][j], j);
         init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
     }
 
+    generate_joint_tables(s);
+
     return (get_bits_count(&gb)+7)/8;
 }
 
@@ -367,6 +440,8 @@ static int read_old_huffman_tables(HYuvContext *s){
         init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0);
     }
 
+    generate_joint_tables(s);
+
     return 0;
 #else
     av_log(s->avctx, AV_LOG_DEBUG, "v1 huffyuv is not supported \n");
@@ -403,8 +478,8 @@ static int common_init(AVCodecContext *avctx){
     return 0;
 }
 
-#ifdef CONFIG_DECODERS
-static int decode_init(AVCodecContext *avctx)
+#if CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER
+static av_cold int decode_init(AVCodecContext *avctx)
 {
     HYuvContext *s = avctx->priv_data;
 
@@ -418,7 +493,7 @@ s->bgr32=1;
 //if(avctx->extradata)
 //  printf("extradata:%X, extradata_size:%d\n", *(uint32_t*)avctx->extradata, avctx->extradata_size);
     if(avctx->extradata_size){
-        if((avctx->bits_per_sample&7) && avctx->bits_per_sample != 12)
+        if((avctx->bits_per_coded_sample&7) && avctx->bits_per_coded_sample != 12)
             s->version=1; // do such files exist at all?
         else
             s->version=2;
@@ -433,7 +508,7 @@ s->bgr32=1;
         s->predictor= method&63;
         s->bitstream_bpp= ((uint8_t*)avctx->extradata)[1];
         if(s->bitstream_bpp==0)
-            s->bitstream_bpp= avctx->bits_per_sample&~7;
+            s->bitstream_bpp= avctx->bits_per_coded_sample&~7;
         interlace= (((uint8_t*)avctx->extradata)[2] & 0x30) >> 4;
         s->interlaced= (interlace==1) ? 1 : (interlace==2) ? 0 : s->interlaced;
         s->context= ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
@@ -441,7 +516,7 @@ s->bgr32=1;
         if(read_huffman_tables(s, ((uint8_t*)avctx->extradata)+4, avctx->extradata_size) < 0)
             return -1;
     }else{
-        switch(avctx->bits_per_sample&7){
+        switch(avctx->bits_per_coded_sample&7){
         case 1:
             s->predictor= LEFT;
             s->decorrelate= 0;
@@ -452,7 +527,7 @@ s->bgr32=1;
             break;
         case 3:
             s->predictor= PLANE;
-            s->decorrelate= avctx->bits_per_sample >= 24;
+            s->decorrelate= avctx->bits_per_coded_sample >= 24;
             break;
         case 4:
             s->predictor= MEDIAN;
@@ -463,7 +538,7 @@ s->bgr32=1;
             s->decorrelate= 0;
             break;
         }
-        s->bitstream_bpp= avctx->bits_per_sample & ~7;
+        s->bitstream_bpp= avctx->bits_per_coded_sample & ~7;
         s->context= 0;
 
         if(read_old_huffman_tables(s) < 0)
@@ -495,13 +570,13 @@ s->bgr32=1;
 
     alloc_temp(s);
 
-//    av_log(NULL, AV_LOG_DEBUG, "pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_sample, s->interlaced);
+//    av_log(NULL, AV_LOG_DEBUG, "pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_coded_sample, s->interlaced);
 
     return 0;
 }
-#endif
+#endif /* CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER */
 
-#ifdef CONFIG_ENCODERS
+#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
 static int store_table(HYuvContext *s, uint8_t *len, uint8_t *buf){
     int i;
     int index= 0;
@@ -525,7 +600,7 @@ static int store_table(HYuvContext *s, uint8_t *len, uint8_t *buf){
     return index;
 }
 
-static int encode_init(AVCodecContext *avctx)
+static av_cold int encode_init(AVCodecContext *avctx)
 {
     HYuvContext *s = avctx->priv_data;
     int i, j;
@@ -552,7 +627,7 @@ static int encode_init(AVCodecContext *avctx)
         av_log(avctx, AV_LOG_ERROR, "format not supported\n");
         return -1;
     }
-    avctx->bits_per_sample= s->bitstream_bpp;
+    avctx->bits_per_coded_sample= s->bitstream_bpp;
     s->decorrelate= s->bitstream_bpp >= 24;
     s->predictor= avctx->prediction_method;
     s->interlaced= avctx->flags&CODEC_FLAG_INTERLACED_ME ? 1 : 0;
@@ -643,7 +718,7 @@ static int encode_init(AVCodecContext *avctx)
                 s->stats[i][j]= 0;
     }
 
-//    printf("pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_sample, s->interlaced);
+//    printf("pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_coded_sample, s->interlaced);
 
     alloc_temp(s);
 
@@ -651,7 +726,20 @@ static int encode_init(AVCodecContext *avctx)
 
     return 0;
 }
-#endif /* CONFIG_ENCODERS */
+#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
+
+/* TODO instead of restarting the read when the code isn't in the first level
+ * of the joint table, jump into the 2nd level of the individual table. */
+#define READ_2PIX(dst0, dst1, plane1){\
+    uint16_t code = get_vlc2(&s->gb, s->vlc[3+plane1].table, VLC_BITS, 1);\
+    if(code != 0xffff){\
+        dst0 = code>>8;\
+        dst1 = code;\
+    }else{\
+        dst0 = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);\
+        dst1 = get_vlc2(&s->gb, s->vlc[plane1].table, VLC_BITS, 3);\
+    }\
+}
 
 static void decode_422_bitstream(HYuvContext *s, int count){
     int i;
@@ -659,10 +747,8 @@ static void decode_422_bitstream(HYuvContext *s, int count){
     count/=2;
 
     for(i=0; i<count; i++){
-        s->temp[0][2*i  ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
-        s->temp[1][  i  ]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
-        s->temp[0][2*i+1]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
-        s->temp[2][  i  ]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
+        READ_2PIX(s->temp[0][2*i  ], s->temp[1][i], 1);
+        READ_2PIX(s->temp[0][2*i+1], s->temp[2][i], 2);
     }
 }
 
@@ -672,12 +758,11 @@ static void decode_gray_bitstream(HYuvContext *s, int count){
     count/=2;
 
     for(i=0; i<count; i++){
-        s->temp[0][2*i  ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
-        s->temp[0][2*i+1]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
+        READ_2PIX(s->temp[0][2*i  ], s->temp[0][2*i+1], 0);
     }
 }
 
-#ifdef CONFIG_ENCODERS
+#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
 static int encode_422_bitstream(HYuvContext *s, int count){
     int i;
 
@@ -770,41 +855,39 @@ static int encode_gray_bitstream(HYuvContext *s, int count){
     }
     return 0;
 }
-#endif /* CONFIG_ENCODERS */
+#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
 
-static void decode_bgr_bitstream(HYuvContext *s, int count){
+static av_always_inline void decode_bgr_1(HYuvContext *s, int count, int decorrelate, int alpha){
     int i;
-
-    if(s->decorrelate){
-        if(s->bitstream_bpp==24){
-            for(i=0; i<count; i++){
-                s->temp[0][4*i+G]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
-                s->temp[0][4*i+B]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) + s->temp[0][4*i+G];
-                s->temp[0][4*i+R]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) + s->temp[0][4*i+G];
-            }
+    for(i=0; i<count; i++){
+        int code = get_vlc2(&s->gb, s->vlc[3].table, VLC_BITS, 1);
+        if(code != -1){
+            *(uint32_t*)&s->temp[0][4*i] = s->pix_bgr_map[code];
+        }else if(decorrelate){
+            s->temp[0][4*i+G] = get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
+            s->temp[0][4*i+B] = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) + s->temp[0][4*i+G];
+            s->temp[0][4*i+R] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) + s->temp[0][4*i+G];
         }else{
-            for(i=0; i<count; i++){
-                s->temp[0][4*i+G]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
-                s->temp[0][4*i+B]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3) + s->temp[0][4*i+G];
-                s->temp[0][4*i+R]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3) + s->temp[0][4*i+G];
-                                   get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3); //?!
-            }
+            s->temp[0][4*i+B] = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
+            s->temp[0][4*i+G] = get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
+            s->temp[0][4*i+R] = get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
         }
+        if(alpha)
+            get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3); //?!
+    }
+}
+
+static void decode_bgr_bitstream(HYuvContext *s, int count){
+    if(s->decorrelate){
+        if(s->bitstream_bpp==24)
+            decode_bgr_1(s, count, 1, 0);
+        else
+            decode_bgr_1(s, count, 1, 1);
     }else{
-        if(s->bitstream_bpp==24){
-            for(i=0; i<count; i++){
-                s->temp[0][4*i+B]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
-                s->temp[0][4*i+G]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
-                s->temp[0][4*i+R]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
-            }
-        }else{
-            for(i=0; i<count; i++){
-                s->temp[0][4*i+B]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
-                s->temp[0][4*i+G]= get_vlc2(&s->gb, s->vlc[1].table, VLC_BITS, 3);
-                s->temp[0][4*i+R]= get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3);
-                                   get_vlc2(&s->gb, s->vlc[2].table, VLC_BITS, 3); //?!
-            }
-        }
+        if(s->bitstream_bpp==24)
+            decode_bgr_1(s, count, 0, 0);
+        else
+            decode_bgr_1(s, count, 0, 1);
     }
 }
 
@@ -849,7 +932,7 @@ static int encode_bgr_bitstream(HYuvContext *s, int count){
     return 0;
 }
 
-#ifdef CONFIG_DECODERS
+#if CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER
 static void draw_slice(HYuvContext *s, int y){
     int h, cy;
     int offset[4];
@@ -877,7 +960,7 @@ static void draw_slice(HYuvContext *s, int y){
     s->last_slice_end= y + h;
 }
 
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size){
     HYuvContext *s = avctx->priv_data;
     const int width= s->width;
     const int width2= s->width>>1;
@@ -890,7 +973,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
 
     s->bitstream_buffer= av_fast_realloc(s->bitstream_buffer, &s->bitstream_buffer_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
 
-    s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer, (uint32_t*)buf, buf_size/4);
+    s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer, (const uint32_t*)buf, buf_size/4);
 
     if(p->data[0])
         avctx->release_buffer(avctx, p);
@@ -1087,7 +1170,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
                 decode_bgr_bitstream(s, width-1);
                 add_left_prediction_bgr32(p->data[0] + last_line+4, s->temp[0], width-1, &leftr, &leftg, &leftb);
 
-                for(y=s->height-2; y>=0; y--){ //yes its stored upside down
+                for(y=s->height-2; y>=0; y--){ //Yes it is stored upside down.
                     decode_bgr_bitstream(s, width);
 
                     add_left_prediction_bgr32(p->data[0] + p->linesize[0]*y, s->temp[0], width, &leftr, &leftg, &leftb);
@@ -1116,7 +1199,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
 
     return (get_bits_count(&s->gb)+31)/32*4 + table_size;
 }
-#endif
+#endif /* CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER */
 
 static int common_end(HYuvContext *s){
     int i;
@@ -1127,8 +1210,8 @@ static int common_end(HYuvContext *s){
     return 0;
 }
 
-#ifdef CONFIG_DECODERS
-static int decode_end(AVCodecContext *avctx)
+#if CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER
+static av_cold int decode_end(AVCodecContext *avctx)
 {
     HYuvContext *s = avctx->priv_data;
     int i;
@@ -1136,15 +1219,15 @@ static int decode_end(AVCodecContext *avctx)
     common_end(s);
     av_freep(&s->bitstream_buffer);
 
-    for(i=0; i<3; i++){
+    for(i=0; i<6; i++){
         free_vlc(&s->vlc[i]);
     }
 
     return 0;
 }
-#endif
+#endif /* CONFIG_HUFFYUV_DECODER || CONFIG_FFVHUFF_DECODER */
 
-#ifdef CONFIG_ENCODERS
+#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
 static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
     HYuvContext *s = avctx->priv_data;
     AVFrame *pict = data;
@@ -1338,7 +1421,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
     return size*4;
 }
 
-static int encode_end(AVCodecContext *avctx)
+static av_cold int encode_end(AVCodecContext *avctx)
 {
     HYuvContext *s = avctx->priv_data;
 
@@ -1349,9 +1432,9 @@ static int encode_end(AVCodecContext *avctx)
 
     return 0;
 }
-#endif /* CONFIG_ENCODERS */
+#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
 
-#ifdef CONFIG_DECODERS
+#if CONFIG_HUFFYUV_DECODER
 AVCodec huffyuv_decoder = {
     "huffyuv",
     CODEC_TYPE_VIDEO,
@@ -1362,9 +1445,12 @@ AVCodec huffyuv_decoder = {
     decode_end,
     decode_frame,
     CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
-    NULL
+    NULL,
+    .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
 };
+#endif
 
+#if CONFIG_FFVHUFF_DECODER
 AVCodec ffvhuff_decoder = {
     "ffvhuff",
     CODEC_TYPE_VIDEO,
@@ -1375,12 +1461,12 @@ AVCodec ffvhuff_decoder = {
     decode_end,
     decode_frame,
     CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
-    NULL
+    NULL,
+    .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
 };
 #endif
 
-#ifdef CONFIG_ENCODERS
-
+#if CONFIG_HUFFYUV_ENCODER
 AVCodec huffyuv_encoder = {
     "huffyuv",
     CODEC_TYPE_VIDEO,
@@ -1389,9 +1475,12 @@ AVCodec huffyuv_encoder = {
     encode_init,
     encode_frame,
     encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_RGB32, -1},
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_RGB32, PIX_FMT_NONE},
+    .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
 };
+#endif
 
+#if CONFIG_FFVHUFF_ENCODER
 AVCodec ffvhuff_encoder = {
     "ffvhuff",
     CODEC_TYPE_VIDEO,
@@ -1400,7 +1489,7 @@ AVCodec ffvhuff_encoder = {
     encode_init,
     encode_frame,
     encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_RGB32, -1},
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_RGB32, PIX_FMT_NONE},
+    .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
 };
-
-#endif //CONFIG_ENCODERS
+#endif