avcodec/mpegvideo: Use intra_scantable in dct_unquantize_h263_intra_c()
[ffmpeg.git] / libavcodec / idctdsp.c
index 8542ab3..d596aed 100644 (file)
@@ -1,18 +1,18 @@
 /*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -24,6 +24,7 @@
 #include "faanidct.h"
 #include "idctdsp.h"
 #include "simple_idct.h"
+#include "xvididct.h"
 
 av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st,
                                const uint8_t *src_scantable)
@@ -47,29 +48,29 @@ av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st,
 }
 
 av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation,
-                                           int idct_permutation_type)
+                                           enum idct_permutation_type perm_type)
 {
     int i;
 
     if (ARCH_X86)
         if (ff_init_scantable_permutation_x86(idct_permutation,
-                                              idct_permutation_type))
+                                              perm_type))
             return;
 
-    switch (idct_permutation_type) {
-    case FF_NO_IDCT_PERM:
+    switch (perm_type) {
+    case FF_IDCT_PERM_NONE:
         for (i = 0; i < 64; i++)
             idct_permutation[i] = i;
         break;
-    case FF_LIBMPEG2_IDCT_PERM:
+    case FF_IDCT_PERM_LIBMPEG2:
         for (i = 0; i < 64; i++)
             idct_permutation[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
         break;
-    case FF_TRANSPOSE_IDCT_PERM:
+    case FF_IDCT_PERM_TRANSPOSE:
         for (i = 0; i < 64; i++)
             idct_permutation[i] = ((i & 7) << 3) | (i >> 3);
         break;
-    case FF_PARTTRANS_IDCT_PERM:
+    case FF_IDCT_PERM_PARTTRANS:
         for (i = 0; i < 64; i++)
             idct_permutation[i] = (i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3);
         break;
@@ -79,8 +80,8 @@ av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation,
     }
 }
 
-static void put_pixels_clamped_c(const int16_t *block, uint8_t *restrict pixels,
-                                 int line_size)
+void ff_put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
+                             ptrdiff_t line_size)
 {
     int i;
 
@@ -100,9 +101,41 @@ static void put_pixels_clamped_c(const int16_t *block, uint8_t *restrict pixels,
     }
 }
 
+static void put_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels,
+                                 int line_size)
+{
+    int i;
+
+    /* read the pixels */
+    for(i=0;i<4;i++) {
+        pixels[0] = av_clip_uint8(block[0]);
+        pixels[1] = av_clip_uint8(block[1]);
+        pixels[2] = av_clip_uint8(block[2]);
+        pixels[3] = av_clip_uint8(block[3]);
+
+        pixels += line_size;
+        block += 8;
+    }
+}
+
+static void put_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels,
+                                 int line_size)
+{
+    int i;
+
+    /* read the pixels */
+    for(i=0;i<2;i++) {
+        pixels[0] = av_clip_uint8(block[0]);
+        pixels[1] = av_clip_uint8(block[1]);
+
+        pixels += line_size;
+        block += 8;
+    }
+}
+
 static void put_signed_pixels_clamped_c(const int16_t *block,
-                                        uint8_t *restrict pixels,
-                                        int line_size)
+                                        uint8_t *av_restrict pixels,
+                                        ptrdiff_t line_size)
 {
     int i, j;
 
@@ -121,8 +154,8 @@ static void put_signed_pixels_clamped_c(const int16_t *block,
     }
 }
 
-static void add_pixels_clamped_c(const int16_t *block, uint8_t *restrict pixels,
-                                 int line_size)
+void ff_add_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
+                             ptrdiff_t line_size)
 {
     int i;
 
@@ -141,57 +174,139 @@ static void add_pixels_clamped_c(const int16_t *block, uint8_t *restrict pixels,
     }
 }
 
-static void jref_idct_put(uint8_t *dest, int line_size, int16_t *block)
+static void add_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels,
+                          int line_size)
+{
+    int i;
+
+    /* read the pixels */
+    for(i=0;i<4;i++) {
+        pixels[0] = av_clip_uint8(pixels[0] + block[0]);
+        pixels[1] = av_clip_uint8(pixels[1] + block[1]);
+        pixels[2] = av_clip_uint8(pixels[2] + block[2]);
+        pixels[3] = av_clip_uint8(pixels[3] + block[3]);
+        pixels += line_size;
+        block += 8;
+    }
+}
+
+static void add_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels,
+                          int line_size)
+{
+    int i;
+
+    /* read the pixels */
+    for(i=0;i<2;i++) {
+        pixels[0] = av_clip_uint8(pixels[0] + block[0]);
+        pixels[1] = av_clip_uint8(pixels[1] + block[1]);
+        pixels += line_size;
+        block += 8;
+    }
+}
+
+static void ff_jref_idct4_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    ff_j_rev_dct4 (block);
+    put_pixels_clamped4_c(block, dest, line_size);
+}
+static void ff_jref_idct4_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
 {
-    ff_j_rev_dct(block);
-    put_pixels_clamped_c(block, dest, line_size);
+    ff_j_rev_dct(block);
+    add_pixels_clamped4_c(block, dest, line_size);
 }
 
-static void jref_idct_add(uint8_t *dest, int line_size, int16_t *block)
+static void ff_jref_idct2_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
 {
-    ff_j_rev_dct(block);
-    add_pixels_clamped_c(block, dest, line_size);
+    ff_j_rev_dct2 (block);
+    put_pixels_clamped2_c(block, dest, line_size);
+}
+static void ff_jref_idct2_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    ff_j_rev_dct2 (block);
+    add_pixels_clamped2_c(block, dest, line_size);
+}
+
+static void ff_jref_idct1_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    dest[0] = av_clip_uint8((block[0] + 4)>>3);
+}
+static void ff_jref_idct1_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
+{
+    dest[0] = av_clip_uint8(dest[0] + ((block[0] + 4)>>3));
 }
 
 av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
 {
     const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
 
-    if (avctx->bits_per_raw_sample == 10) {
-        c->idct_put              = ff_simple_idct_put_10;
-        c->idct_add              = ff_simple_idct_add_10;
-        c->idct                  = ff_simple_idct_10;
-        c->idct_permutation_type = FF_NO_IDCT_PERM;
+    if (avctx->lowres==1) {
+        c->idct_put  = ff_jref_idct4_put;
+        c->idct_add  = ff_jref_idct4_add;
+        c->idct      = ff_j_rev_dct4;
+        c->perm_type = FF_IDCT_PERM_NONE;
+    } else if (avctx->lowres==2) {
+        c->idct_put  = ff_jref_idct2_put;
+        c->idct_add  = ff_jref_idct2_add;
+        c->idct      = ff_j_rev_dct2;
+        c->perm_type = FF_IDCT_PERM_NONE;
+    } else if (avctx->lowres==3) {
+        c->idct_put  = ff_jref_idct1_put;
+        c->idct_add  = ff_jref_idct1_add;
+        c->idct      = ff_j_rev_dct1;
+        c->perm_type = FF_IDCT_PERM_NONE;
     } else {
-        if (avctx->idct_algo == FF_IDCT_INT) {
-            c->idct_put              = jref_idct_put;
-            c->idct_add              = jref_idct_add;
-            c->idct                  = ff_j_rev_dct;
-            c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM;
-        } else if (avctx->idct_algo == FF_IDCT_FAAN) {
-            c->idct_put              = ff_faanidct_put;
-            c->idct_add              = ff_faanidct_add;
-            c->idct                  = ff_faanidct;
-            c->idct_permutation_type = FF_NO_IDCT_PERM;
-        } else { // accurate/default
-            c->idct_put              = ff_simple_idct_put_8;
-            c->idct_add              = ff_simple_idct_add_8;
-            c->idct                  = ff_simple_idct_8;
-            c->idct_permutation_type = FF_NO_IDCT_PERM;
+        if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) {
+            c->idct_put              = ff_simple_idct_put_10;
+            c->idct_add              = ff_simple_idct_add_10;
+            c->idct                  = ff_simple_idct_10;
+            c->perm_type             = FF_IDCT_PERM_NONE;
+        } else if (avctx->bits_per_raw_sample == 12) {
+            c->idct_put              = ff_simple_idct_put_12;
+            c->idct_add              = ff_simple_idct_add_12;
+            c->idct                  = ff_simple_idct_12;
+            c->perm_type             = FF_IDCT_PERM_NONE;
+        } else {
+            if (avctx->idct_algo == FF_IDCT_INT) {
+                c->idct_put  = ff_jref_idct_put;
+                c->idct_add  = ff_jref_idct_add;
+                c->idct      = ff_j_rev_dct;
+                c->perm_type = FF_IDCT_PERM_LIBMPEG2;
+#if CONFIG_FAANIDCT
+            } else if (avctx->idct_algo == FF_IDCT_FAAN) {
+                c->idct_put  = ff_faanidct_put;
+                c->idct_add  = ff_faanidct_add;
+                c->idct      = ff_faanidct;
+                c->perm_type = FF_IDCT_PERM_NONE;
+#endif /* CONFIG_FAANIDCT */
+            } else { // accurate/default
+                c->idct_put  = ff_simple_idct_put_8;
+                c->idct_add  = ff_simple_idct_add_8;
+                c->idct      = ff_simple_idct_8;
+                c->perm_type = FF_IDCT_PERM_NONE;
+            }
         }
     }
 
-    c->put_pixels_clamped        = put_pixels_clamped_c;
+    c->put_pixels_clamped        = ff_put_pixels_clamped_c;
     c->put_signed_pixels_clamped = put_signed_pixels_clamped_c;
-    c->add_pixels_clamped        = add_pixels_clamped_c;
+    c->add_pixels_clamped        = ff_add_pixels_clamped_c;
+
+    if (CONFIG_MPEG4_DECODER && avctx->idct_algo == FF_IDCT_XVID)
+        ff_xvid_idct_init(c, avctx);
 
+    if (ARCH_AARCH64)
+        ff_idctdsp_init_aarch64(c, avctx, high_bit_depth);
+    if (ARCH_ALPHA)
+        ff_idctdsp_init_alpha(c, avctx, high_bit_depth);
     if (ARCH_ARM)
         ff_idctdsp_init_arm(c, avctx, high_bit_depth);
     if (ARCH_PPC)
         ff_idctdsp_init_ppc(c, avctx, high_bit_depth);
     if (ARCH_X86)
         ff_idctdsp_init_x86(c, avctx, high_bit_depth);
+    if (ARCH_MIPS)
+        ff_idctdsp_init_mips(c, avctx, high_bit_depth);
 
     ff_init_scantable_permutation(c->idct_permutation,
-                                  c->idct_permutation_type);
+                                  c->perm_type);
 }