avcodec/ttaenc: split off hybrid filter processing as ttaencdsp

Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/Makefile

@@ -552,7 +552,7 @@ OBJS-$(CONFIG_TRUESPEECH_DECODER)      += truespeech.o
 OBJS-$(CONFIG_TSCC_DECODER)            += tscc.o msrledec.o
 OBJS-$(CONFIG_TSCC2_DECODER)           += tscc2.o
 OBJS-$(CONFIG_TTA_DECODER)             += tta.o ttadata.o ttadsp.o
-OBJS-$(CONFIG_TTA_ENCODER)             += ttaenc.o ttadata.o
+OBJS-$(CONFIG_TTA_ENCODER)             += ttaenc.o ttaencdsp.o ttadata.o
 OBJS-$(CONFIG_TWINVQ_DECODER)          += twinvqdec.o twinvq.o
 OBJS-$(CONFIG_TXD_DECODER)             += txd.o
 OBJS-$(CONFIG_ULTI_DECODER)            += ulti.o

libavcodec/ttaenc.c

@@ -20,6 +20,7 @@
 
 #define BITSTREAM_WRITER_LE
 #include "ttadata.h"
+#include "ttaencdsp.h"
 #include "avcodec.h"
 #include "put_bits.h"
 #include "internal.h"
@@ -29,6 +30,7 @@ typedef struct TTAEncContext {
     const AVCRC *crc_table;
     int bps;
     TTAChannel *ch_ctx;
+    TTAEncDSPContext dsp;
 } TTAEncContext;
 
 static av_cold int tta_encode_init(AVCodecContext *avctx)
@@ -57,38 +59,9 @@ static av_cold int tta_encode_init(AVCodecContext *avctx)
     if (!s->ch_ctx)
         return AVERROR(ENOMEM);
 
-    return 0;
-}
-
-static inline void ttafilter_process(TTAFilter *c, int32_t *in)
-{
-    register int32_t *dl = c->dl, *qm = c->qm, *dx = c->dx, sum = c->round;
-
-    if (c->error < 0) {
-        qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3];
-        qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7];
-    } else if (c->error > 0) {
-        qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3];
-        qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7];
-    }
+    ff_ttaencdsp_init(&s->dsp);
 
-    sum += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] +
-           dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7];
-
-    dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4];
-    dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4];
-
-    dx[4] = ((dl[4] >> 30) | 1);
-    dx[5] = ((dl[5] >> 30) | 2) & ~1;
-    dx[6] = ((dl[6] >> 30) | 2) & ~1;
-    dx[7] = ((dl[7] >> 30) | 4) & ~3;
-
-    dl[4] = -dl[5]; dl[5] = -dl[6];
-    dl[6] = *in - dl[7]; dl[7] = *in;
-    dl[5] += dl[6]; dl[4] += dl[5];
-
-    *in -= (sum >> c->shift);
-    c->error = *in;
+    return 0;
 }
 
 static int32_t get_sample(const AVFrame *frame, int sample,
@@ -155,7 +128,8 @@ pkt_alloc:
         }
         c->predictor = temp;
 
-        ttafilter_process(filter, &value);
+        s->dsp.filter_process(filter->qm, filter->dx, filter->dl, &filter->error, &value,
+                              filter->shift, filter->round);
         outval = (value > 0) ? (value << 1) - 1: -value << 1;
 
         k = rice->k0;

libavcodec/ttaencdsp.c

@@ -0,0 +1,55 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "ttaencdsp.h"
+
+static void ttaenc_filter_process_c(int32_t *qm, int32_t *dx, int32_t *dl,
+                                    int32_t *error, int32_t *in, int32_t shift,
+                                    int32_t round) {
+    if (*error < 0) {
+        qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3];
+        qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7];
+    } else if (*error > 0) {
+        qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3];
+        qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7];
+    }
+
+    round += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] +
+             dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7];
+
+    dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4];
+    dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4];
+
+    dx[4] = ((dl[4] >> 30) | 1);
+    dx[5] = ((dl[5] >> 30) | 2) & ~1;
+    dx[6] = ((dl[6] >> 30) | 2) & ~1;
+    dx[7] = ((dl[7] >> 30) | 4) & ~3;
+
+    dl[4] = -dl[5]; dl[5] = -dl[6];
+    dl[6] = *in - dl[7]; dl[7] = *in;
+    dl[5] += dl[6]; dl[4] += dl[5];
+
+    *in -= (round >> shift);
+    *error = *in;
+}
+
+av_cold void ff_ttaencdsp_init(TTAEncDSPContext *c)
+{
+    c->filter_process = ttaenc_filter_process_c;
+}

libavcodec/ttaencdsp.h

@@ -0,0 +1,32 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_TTAENCDSP_H
+#define AVCODEC_TTAENCDSP_H
+
+#include <stdint.h>
+
+typedef struct TTAEncDSPContext {
+    void (*filter_process)(int32_t *qm, int32_t *dx, int32_t *dl,
+                           int32_t *error, int32_t *in, int32_t shift,
+                           int32_t round);
+} TTAEncDSPContext;
+
+void ff_ttaencdsp_init(TTAEncDSPContext *c);
+
+#endif /* AVCODEC_TTAENCDSP_H */