libavcodec/huffyuv: >8 bit support

This adds only yuv420p10, others are trivial to add after this commit
and will be added in a subsequent commit.
Currently the implementation is not optimized, optimizations will be
added later

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 95 insertions, 29 deletions

diff --git a/libavcodec/huffyuvenc.c b/libavcodec/huffyuvenc.c
index bd633a2fed..55e0b1e398 100644
--- a/libavcodec/huffyuvenc.c
+++ b/libavcodec/huffyuvenc.c
@@ -19,6 +19,8 @@
  * 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
+ *
+ * yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA
  */
 
 /**
@@ -33,25 +35,58 @@
 #include "put_bits.h"
 #include "libavutil/pixdesc.h"
 
+static inline void diff_bytes(HYuvContext *s, uint8_t *dst,
+                              const uint8_t *src0, const uint8_t *src1, int w)
+{
+    int i;
+    if (s->bps <= 8) {
+        s->dsp.diff_bytes(dst, src0, src1, w);
+    } else {
+        const uint16_t *src016 = (const uint16_t *)src0;
+        const uint16_t *src116 = (const uint16_t *)src1;
+        uint16_t       *dst16  = (      uint16_t *)dst;
+
+        for (i = 0; i < w; i++) {
+            dst16[i] = src016[i] - src116[i];
+        }
+
+        //FIXME optimize
+    }
+}
+
 static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
                                       const uint8_t *src, int w, int left)
 {
     int i;
-    if (w < 32) {
-        for (i = 0; i < w; i++) {
-            const int temp = src[i];
-            dst[i] = temp - left;
-            left   = temp;
+    if (s->bps <= 8) {
+        if (w < 32) {
+            for (i = 0; i < w; i++) {
+                const int temp = src[i];
+                dst[i] = temp - left;
+                left   = temp;
+            }
+            return left;
+        } else {
+            for (i = 0; i < 16; i++) {
+                const int temp = src[i];
+                dst[i] = temp - left;
+                left   = temp;
+            }
+            s->dsp.diff_bytes(dst + 16, src + 16, src + 15, w - 16);
+            return src[w-1];
         }
-        return left;
     } else {
-        for (i = 0; i < 16; i++) {
-            const int temp = src[i];
-            dst[i] = temp - left;
+        const uint16_t *src16 = (const uint16_t *)src;
+        uint16_t       *dst16 = (      uint16_t *)dst;
+
+        for (i = 0; i < w; i++) {
+            const int temp = src16[i];
+            dst16[i] = temp - left;
             left   = temp;
         }
-        s->dsp.diff_bytes(dst + 16, src + 16, src + 15, w - 16);
-        return src[w-1];
+        return left;
+
+        //FIXME optimize
     }
 }
 
@@ -122,15 +157,16 @@ static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
 {
     int i;
     int index = 0;
+    int n = s->n;
 
-    for (i = 0; i < 256;) {
+    for (i = 0; i < n;) {
         int val = len[i];
         int repeat = 0;
 
-        for (; i < 256 && len[i] == val && repeat < 255; i++)
+        for (; i < n && len[i] == val && repeat < 255; i++)
             repeat++;
 
-        av_assert0(val < 32 && val >0 && repeat<256 && repeat>0);
+        av_assert0(val < 32 && val >0 && repeat < 256 && repeat>0);
         if (repeat > 7) {
             buf[index++] = val;
             buf[index++] = repeat;
@@ -152,10 +188,10 @@ static int store_huffman_tables(HYuvContext *s, uint8_t *buf)
         count = 1 + s->alpha + 2*s->chroma;
 
     for (i = 0; i < count; i++) {
-        if ((ret = ff_huff_gen_len_table(s->len[i], s->stats[i], 256)) < 0)
+        if ((ret = ff_huff_gen_len_table(s->len[i], s->stats[i], s->n)) < 0)
             return ret;
 
-        if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) {
+        if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->n) < 0) {
             return -1;
         }
 
@@ -173,8 +209,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
 
     ff_huffyuv_common_init(avctx);
 
-    avctx->extradata = av_mallocz(1024*30); // 256*3+4 == 772
-    avctx->stats_out = av_mallocz(1024*30); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
+    avctx->extradata = av_mallocz(3*MAX_N + 4);
+    avctx->stats_out = av_mallocz(21*MAX_N*3 + 4); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
     if (!avctx->extradata || !avctx->stats_out) {
         av_freep(&avctx->stats_out);
         return AVERROR(ENOMEM);
@@ -216,6 +252,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
     case AV_PIX_FMT_YUVA422P:
     case AV_PIX_FMT_GBRAP:
     case AV_PIX_FMT_GRAY8A:
+    case AV_PIX_FMT_YUV420P10:
         s->version = 3;
         break;
     case AV_PIX_FMT_RGB32:
@@ -301,14 +338,14 @@ static av_cold int encode_init(AVCodecContext *avctx)
         char *p = avctx->stats_in;
 
         for (i = 0; i < 4; i++)
-            for (j = 0; j < 256; j++)
+            for (j = 0; j < s->n; j++)
                 s->stats[i][j] = 1;
 
         for (;;) {
             for (i = 0; i < 4; i++) {
                 char *next;
 
-                for (j = 0; j < 256; j++) {
+                for (j = 0; j < s->n; j++) {
                     s->stats[i][j] += strtol(p, &next, 0);
                     if (next == p) return -1;
                     p = next;
@@ -318,8 +355,8 @@ static av_cold int encode_init(AVCodecContext *avctx)
         }
     } else {
         for (i = 0; i < 4; i++)
-            for (j = 0; j < 256; j++) {
-                int d = FFMIN(j, 256 - j);
+            for (j = 0; j < s->n; j++) {
+                int d = FFMIN(j, s->n - j);
 
                 s->stats[i][j] = 100000000 / (d + 1);
             }
@@ -333,14 +370,14 @@ static av_cold int encode_init(AVCodecContext *avctx)
     if (s->context) {
         for (i = 0; i < 4; i++) {
             int pels = s->width * s->height / (i ? 40 : 10);
-            for (j = 0; j < 256; j++) {
-                int d = FFMIN(j, 256 - j);
+            for (j = 0; j < s->n; j++) {
+                int d = FFMIN(j, s->n - j);
                 s->stats[i][j] = pels/(d + 1);
             }
         }
     } else {
         for (i = 0; i < 4; i++)
-            for (j = 0; j < 256; j++)
+            for (j = 0; j < s->n; j++)
                 s->stats[i][j]= 0;
     }
 
@@ -412,7 +449,7 @@ static int encode_plane_bitstream(HYuvContext *s, int count, int plane)
 {
     int i;
 
-    if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 4 * count) {
+    if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < count * s->bps / 2) {
         av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
         return -1;
     }
@@ -420,6 +457,9 @@ static int encode_plane_bitstream(HYuvContext *s, int count, int plane)
 #define LOAD2\
             int y0 = s->temp[0][2 * i];\
             int y1 = s->temp[0][2 * i + 1];
+#define LOAD2_16\
+            int y0 = s->temp16[0][2 * i] & mask;\
+            int y1 = s->temp16[0][2 * i + 1] & mask;
 #define STAT2\
             s->stats[plane][y0]++;\
             s->stats[plane][y1]++;
@@ -429,6 +469,7 @@ static int encode_plane_bitstream(HYuvContext *s, int count, int plane)
 
     count /= 2;
 
+    if (s->bps <= 8) {
     if (s->flags & CODEC_FLAG_PASS1) {
         for (i = 0; i < count; i++) {
             LOAD2;
@@ -450,6 +491,30 @@ static int encode_plane_bitstream(HYuvContext *s, int count, int plane)
             WRITE2;
         }
     }
+    } else {
+        int mask = s->n - 1;
+        if (s->flags & CODEC_FLAG_PASS1) {
+            for (i = 0; i < count; i++) {
+                LOAD2_16;
+                STAT2;
+            }
+        }
+        if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
+            return 0;
+
+        if (s->context) {
+            for (i = 0; i < count; i++) {
+                LOAD2_16;
+                STAT2;
+                WRITE2;
+            }
+        } else {
+            for (i = 0; i < count; i++) {
+                LOAD2_16;
+                WRITE2;
+            }
+        }
+    }
 #undef LOAD2
 #undef STAT2
 #undef WRITE2
@@ -574,7 +639,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             return size;
 
         for (i = 0; i < 4; i++)
-            for (j = 0; j < 256; j++)
+            for (j = 0; j < s->n; j++)
                 s->stats[i][j] >>= 1;
     }
 
@@ -784,7 +849,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                     uint8_t *dst = p->data[plane] + p->linesize[plane] * y;
 
                     if (s->predictor == PLANE && s->interlaced < y) {
-                        s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, w);
+                        diff_bytes(s, s->temp[1], dst, dst - fake_stride, w);
 
                         left = sub_left_prediction(s, s->temp[0], s->temp[1], w , left);
                     } else {
@@ -810,7 +875,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         char *p = avctx->stats_out;
         char *end = p + 1024*30;
         for (i = 0; i < 4; i++) {
-            for (j = 0; j < 256; j++) {
+            for (j = 0; j < s->n; j++) {
                 snprintf(p, end-p, "%"PRIu64" ", s->stats[i][j]);
                 p += strlen(p);
                 s->stats[i][j]= 0;
@@ -883,6 +948,7 @@ AVCodec ff_ffvhuff_encoder = {
         AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
         AV_PIX_FMT_GBRAP,
         AV_PIX_FMT_GRAY8A,
+        AV_PIX_FMT_YUV420P10,
         AV_PIX_FMT_RGB24,
         AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
     },