avfilter/vf_normalize: add support for >8 depth

libavfilter/vf_normalize.c

@@ -73,6 +73,7 @@
  */
 
 #include "libavutil/imgutils.h"
+#include "libavutil/intreadwrite.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "avfilter.h"
@@ -82,12 +83,12 @@
 #include "video.h"
 
 typedef struct NormalizeHistory {
-    uint8_t *history;       // History entries.
-    uint32_t history_sum;   // Sum of history entries.
+    uint16_t *history;      // History entries.
+    uint64_t history_sum;   // Sum of history entries.
 } NormalizeHistory;
 
 typedef struct NormalizeLocal {
-    uint8_t in;     // Original input byte value for this frame.
+    uint16_t in;    // Original input byte value for this frame.
     float smoothed; // Smoothed input value [0,255].
     float out;      // Output value [0,255]
 } NormalizeLocal;
@@ -103,6 +104,9 @@ typedef struct NormalizeContext {
     float strength;
 
     uint8_t co[4];      // Offsets to R,G,B,A bytes respectively in each pixel
+    int depth;
+    int sblackpt[4];
+    int swhitept[4];
     int num_components; // Number of components in the pixel format
     int step;
     int history_len;    // Number of frames to average; based on smoothing factor
@@ -110,9 +114,9 @@ typedef struct NormalizeContext {
 
     // Per-extremum, per-channel history, for temporal smoothing.
     NormalizeHistory min[3], max[3];           // Min and max for each channel in {R,G,B}.
-    uint8_t *history_mem;       // Single allocation for above history entries
+    uint16_t *history_mem;       // Single allocation for above history entries
 
-    uint8_t lut[3][256];    // Lookup table
+    uint16_t lut[3][65536];    // Lookup table
 
     void (*find_min_max)(struct NormalizeContext *s, AVFrame *in, NormalizeLocal min[3], NormalizeLocal max[3]);
     void (*process)(struct NormalizeContext *s, AVFrame *in, AVFrame *out);
@@ -207,6 +211,80 @@ static void process_planar(NormalizeContext *s, AVFrame *in, AVFrame *out)
     }
 }
 
+static void find_min_max_16(NormalizeContext *s, AVFrame *in, NormalizeLocal min[3], NormalizeLocal max[3])
+{
+    for (int c = 0; c < 3; c++)
+        min[c].in = max[c].in = AV_RN16(in->data[0] + 2 * s->co[c]);
+    for (int y = 0; y < in->height; y++) {
+        uint16_t *inp = (uint16_t *)(in->data[0] + y * in->linesize[0]);
+        for (int x = 0; x < in->width; x++) {
+            for (int c = 0; c < 3; c++) {
+                min[c].in = FFMIN(min[c].in, inp[s->co[c]]);
+                max[c].in = FFMAX(max[c].in, inp[s->co[c]]);
+            }
+            inp += s->step;
+        }
+    }
+}
+
+static void process_16(NormalizeContext *s, AVFrame *in, AVFrame *out)
+{
+    for (int y = 0; y < in->height; y++) {
+        uint16_t *inp  = (uint16_t *)(in->data[0] + y * in->linesize[0]);
+        uint16_t *outp = (uint16_t *)(out->data[0] + y * out->linesize[0]);
+        for (int x = 0; x < in->width; x++) {
+            for (int c = 0; c < 3; c++)
+                outp[s->co[c]] = s->lut[c][inp[s->co[c]]];
+            if (s->num_components == 4)
+                // Copy alpha as-is.
+                outp[s->co[3]] = inp[s->co[3]];
+            inp += s->step;
+            outp += s->step;
+        }
+    }
+}
+
+static void find_min_max_planar_16(NormalizeContext *s, AVFrame *in, NormalizeLocal min[3], NormalizeLocal max[3])
+{
+    min[0].in = max[0].in = AV_RN16(in->data[2]);
+    min[1].in = max[1].in = AV_RN16(in->data[0]);
+    min[2].in = max[2].in = AV_RN16(in->data[1]);
+    for (int y = 0; y < in->height; y++) {
+        uint16_t *inrp = (uint16_t *)(in->data[2] + y * in->linesize[2]);
+        uint16_t *ingp = (uint16_t *)(in->data[0] + y * in->linesize[0]);
+        uint16_t *inbp = (uint16_t *)(in->data[1] + y * in->linesize[1]);
+        for (int x = 0; x < in->width; x++) {
+            min[0].in = FFMIN(min[0].in, inrp[x]);
+            max[0].in = FFMAX(max[0].in, inrp[x]);
+            min[1].in = FFMIN(min[1].in, ingp[x]);
+            max[1].in = FFMAX(max[1].in, ingp[x]);
+            min[2].in = FFMIN(min[2].in, inbp[x]);
+            max[2].in = FFMAX(max[2].in, inbp[x]);
+        }
+    }
+}
+
+static void process_planar_16(NormalizeContext *s, AVFrame *in, AVFrame *out)
+{
+    for (int y = 0; y < in->height; y++) {
+        uint16_t *inrp  = (uint16_t *)(in->data[2] + y * in->linesize[2]);
+        uint16_t *ingp  = (uint16_t *)(in->data[0] + y * in->linesize[0]);
+        uint16_t *inbp  = (uint16_t *)(in->data[1] + y * in->linesize[1]);
+        uint16_t *inap  = (uint16_t *)(in->data[3] + y * in->linesize[3]);
+        uint16_t *outrp = (uint16_t *)(out->data[2] + y * out->linesize[2]);
+        uint16_t *outgp = (uint16_t *)(out->data[0] + y * out->linesize[0]);
+        uint16_t *outbp = (uint16_t *)(out->data[1] + y * out->linesize[1]);
+        uint16_t *outap = (uint16_t *)(out->data[3] + y * out->linesize[3]);
+        for (int x = 0; x < in->width; x++) {
+            outrp[x] = s->lut[0][inrp[x]];
+            outgp[x] = s->lut[1][ingp[x]];
+            outbp[x] = s->lut[2][inbp[x]];
+            if (s->num_components == 4)
+                outap[x] = inap[x];
+        }
+    }
+}
+
 // This function is the main guts of the filter. Normalizes the input frame
 // into the output frame. The frames are known to have the same dimensions
 // and pixel format.
@@ -269,9 +347,9 @@ static void normalize(NormalizeContext *s, AVFrame *in, AVFrame *out)
         // Calculate the output range [min.out,max.out] as a ratio of the full-
         // strength output range [blackpt,whitept] and the original input range
         // [min.in,max.in], based on the user-specified filter strength.
-        min[c].out = (s->blackpt[c] *         s->strength)
+        min[c].out = (s->sblackpt[c] *        s->strength)
                    + (min[c].in     * (1.0f - s->strength));
-        max[c].out = (s->whitept[c] *         s->strength)
+        max[c].out = (s->swhitept[c] *        s->strength)
                    + (max[c].in     * (1.0f - s->strength));
 
         // Now, build a lookup table which linearly maps the adjusted input range
@@ -291,8 +369,7 @@ static void normalize(NormalizeContext *s, AVFrame *in, AVFrame *out)
             float scale = (max[c].out - min[c].out) / (max[c].smoothed - min[c].smoothed);
             for (in_val = min[c].in; in_val <= max[c].in; in_val++) {
                 int out_val = (in_val - min[c].smoothed) * scale + min[c].out + 0.5f;
-                out_val = FFMAX(out_val, 0);
-                out_val = FFMIN(out_val, 255);
+                out_val = av_clip_uintp2_c(out_val, s->depth);
                 s->lut[c][in_val] = out_val;
             }
         }
@@ -324,8 +401,11 @@ static int query_formats(AVFilterContext *ctx)
         AV_PIX_FMT_RGB0,
         AV_PIX_FMT_0BGR,
         AV_PIX_FMT_BGR0,
-        AV_PIX_FMT_GBRAP,
-        AV_PIX_FMT_GBRP,
+        AV_PIX_FMT_RGB48,  AV_PIX_FMT_BGR48,
+        AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
+        AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
+        AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
+        AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
         AV_PIX_FMT_NONE
     };
     // According to filter_design.txt, using ff_set_common_formats() this way
@@ -345,11 +425,13 @@ static int config_input(AVFilterLink *inlink)
     NormalizeContext *s = inlink->dst->priv;
     // Store offsets to R,G,B,A bytes respectively in each pixel
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
-    int c, planar;
+    int c, planar, scale;
 
     ff_fill_rgba_map(s->co, inlink->format);
+    s->depth = desc->comp[0].depth;
+    scale = 1 << (s->depth - 8);
     s->num_components = desc->nb_components;
-    s->step = av_get_padded_bits_per_pixel(desc) >> 3;
+    s->step = av_get_padded_bits_per_pixel(desc) >> (3 + (s->depth > 8));
     // Convert smoothing value to history_len (a count of frames to average,
     // must be at least 1).  Currently this is a direct assignment, but the
     // smoothing value was originally envisaged as a number of seconds.  In
@@ -359,19 +441,26 @@ static int config_input(AVFilterLink *inlink)
     // Allocate the history buffers -- there are 6 -- one for each extrema.
     // s->smoothing is limited to INT_MAX/8, so that (s->history_len * 6)
     // can't overflow on 32bit causing a too-small allocation.
-    s->history_mem = av_malloc(s->history_len * 6);
+    s->history_mem = av_malloc(s->history_len * 6 * sizeof(*s->history_mem));
     if (s->history_mem == NULL)
         return AVERROR(ENOMEM);
 
     for (c = 0; c < 3; c++) {
         s->min[c].history = s->history_mem + (c*2)   * s->history_len;
         s->max[c].history = s->history_mem + (c*2+1) * s->history_len;
+        s->sblackpt[c] = scale * s->blackpt[c] + (s->blackpt[c] >> (s->depth - 8));
+        s->swhitept[c] = scale * s->whitept[c] + (s->whitept[c] >> (s->depth - 8));
     }
 
     planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
 
-    s->find_min_max = planar ? find_min_max_planar : find_min_max;
-    s->process = planar? process_planar : process;
+    if (s->depth <= 8) {
+        s->find_min_max = planar ? find_min_max_planar : find_min_max;
+        s->process = planar? process_planar : process;
+    } else {
+        s->find_min_max = planar ? find_min_max_planar_16 : find_min_max_16;
+        s->process = planar? process_planar_16 : process_16;
+    }
 
     return 0;
 }