Merge commit '6647aa0426e73839b9b1d1c9d86188f469167531'

* commit '6647aa0426e73839b9b1d1c9d86188f469167531':
  indeo4: add missing Haar and slanted transforms
  dxtory v2 support

Conflicts:
	libavcodec/indeo4.c
	libavcodec/ivi_dsp.c
	libavcodec/version.h

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

libavcodec/dxtory.c

@@ -20,44 +20,31 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#define BITSTREAM_READER_LE
 #include "avcodec.h"
+#include "bytestream.h"
+#include "get_bits.h"
 #include "internal.h"
+#include "unary.h"
 #include "libavutil/common.h"
 #include "libavutil/intreadwrite.h"
 
-static av_cold int decode_init(AVCodecContext *avctx)
+static int dxtory_decode_v1(AVCodecContext *avctx, AVFrame *pic,
-{
+                            const uint8_t *src, int src_size)
-    avctx->pix_fmt     = AV_PIX_FMT_YUV420P;
-
-    return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
-                        AVPacket *avpkt)
 {
     int h, w;
-    AVFrame *pic = data;
-    const uint8_t *src = avpkt->data;
     uint8_t *Y1, *Y2, *U, *V;
     int ret;
 
-    if (avpkt->size < avctx->width * avctx->height * 3 / 2 + 16) {
+    if (src_size < avctx->width * avctx->height * 3 / 2) {
         av_log(avctx, AV_LOG_ERROR, "packet too small\n");
         return AVERROR_INVALIDDATA;
     }
 
+    avctx->pix_fmt = AV_PIX_FMT_YUV420P;
     if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
         return ret;
 
-    pic->pict_type = AV_PICTURE_TYPE_I;
-    pic->key_frame = 1;
-
-    if (AV_RL32(src) != 0x01000002) {
-        avpriv_request_sample(avctx, "Frame header %X", AV_RL32(src));
-        return AVERROR_PATCHWELCOME;
-    }
-    src += 16;
-
     Y1 = pic->data[0];
     Y2 = pic->data[0] + pic->linesize[0];
     U  = pic->data[1];
@@ -76,6 +63,154 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         V  += pic->linesize[2];
     }
 
+    return 0;
+}
+
+const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xFF };
+
+static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
+{
+    uint8_t c, val;
+
+    c = get_unary(gb, 0, 8);
+    if (!c) {
+        val = get_bits(gb, 8);
+        memmove(lru + 1, lru, sizeof(*lru) * (8 - 1));
+    } else {
+        val = lru[c - 1];
+        memmove(lru + 1, lru, sizeof(*lru) * (c - 1));
+    }
+    lru[0] = val;
+
+    return val;
+}
+
+static int dx2_decode_slice(GetBitContext *gb, int width, int height,
+                            uint8_t *Y, uint8_t *U, uint8_t *V,
+                            int ystride, int ustride, int vstride)
+{
+    int x, y, i;
+    uint8_t lru[3][8];
+
+    for (i = 0; i < 3; i++)
+        memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
+
+    for (y = 0; y < height; y+=2) {
+        for (x = 0; x < width; x += 2) {
+            Y[x + 0 + 0 * ystride] = decode_sym(gb, lru[0]);
+            Y[x + 1 + 0 * ystride] = decode_sym(gb, lru[0]);
+            Y[x + 0 + 1 * ystride] = decode_sym(gb, lru[0]);
+            Y[x + 1 + 1 * ystride] = decode_sym(gb, lru[0]);
+            U[x >> 1] = decode_sym(gb, lru[1]) ^ 0x80;
+            V[x >> 1] = decode_sym(gb, lru[2]) ^ 0x80;
+        }
+
+        Y += ystride << 1;
+        U += ustride;
+        V += vstride;
+    }
+
+    return 0;
+}
+
+static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
+                            const uint8_t *src, int src_size)
+{
+    GetByteContext gb;
+    GetBitContext  gb2;
+    int nslices, slice, slice_height;
+    uint32_t off, slice_size;
+    uint8_t *Y, *U, *V;
+    int ret;
+
+    bytestream2_init(&gb, src, src_size);
+    nslices = bytestream2_get_le16(&gb);
+    off = FFALIGN(nslices * 4 + 2, 16);
+    if (src_size < off) {
+        av_log(avctx, AV_LOG_ERROR, "no slice data\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    if (!nslices || avctx->height % nslices) {
+        avpriv_request_sample(avctx, "%d slices for %dx%d", nslices,
+                              avctx->width, avctx->height);
+        return AVERROR(ENOSYS);
+    }
+
+    slice_height = avctx->height / nslices;
+    if ((avctx->width & 1) || (slice_height & 1)) {
+        avpriv_request_sample(avctx, "slice dimensions %dx%d",
+                              avctx->width, slice_height);
+    }
+
+    avctx->pix_fmt = AV_PIX_FMT_YUV420P;
+    if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
+        return ret;
+
+    Y = pic->data[0];
+    U = pic->data[1];
+    V = pic->data[2];
+
+    for (slice = 0; slice < nslices; slice++) {
+        slice_size = bytestream2_get_le32(&gb);
+        if (slice_size > src_size - off) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "invalid slice size %d (only %d bytes left)\n",
+                   slice_size, src_size - off);
+            return AVERROR_INVALIDDATA;
+        }
+        if (slice_size <= 16) {
+            av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n", slice_size);
+            return AVERROR_INVALIDDATA;
+        }
+
+        if (AV_RL32(src + off) != slice_size - 16) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "Slice sizes mismatch: got %d instead of %d\n",
+                   AV_RL32(src + off), slice_size - 16);
+        }
+        init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
+        dx2_decode_slice(&gb2, avctx->width, slice_height, Y, U, V,
+                         pic->linesize[0], pic->linesize[1], pic->linesize[2]);
+
+        Y += pic->linesize[0] *  slice_height;
+        U += pic->linesize[1] * (slice_height >> 1);
+        V += pic->linesize[2] * (slice_height >> 1);
+        off += slice_size;
+    }
+
+    return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+                        AVPacket *avpkt)
+{
+    AVFrame *pic = data;
+    const uint8_t *src = avpkt->data;
+    int ret;
+
+    if (avpkt->size < 16) {
+        av_log(avctx, AV_LOG_ERROR, "packet too small\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    switch (AV_RB32(src)) {
+    case 0x02000001:
+        ret = dxtory_decode_v1(avctx, pic, src + 16, avpkt->size - 16);
+        break;
+    case 0x02000009:
+        ret = dxtory_decode_v2(avctx, pic, src + 16, avpkt->size - 16);
+        break;
+    default:
+        avpriv_request_sample(avctx, "Frame header %X", AV_RB32(src));
+        return AVERROR_PATCHWELCOME;
+    }
+
+    if (ret)
+        return ret;
+
+    pic->pict_type = AV_PICTURE_TYPE_I;
+    pic->key_frame = 1;
     *got_frame = 1;
 
     return avpkt->size;
@@ -86,7 +221,6 @@ AVCodec ff_dxtory_decoder = {
     .long_name      = NULL_IF_CONFIG_SMALL("Dxtory"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_DXTORY,
-    .init           = decode_init,
     .decode         = decode_frame,
     .capabilities   = CODEC_CAP_DR1,
 };

libavcodec/indeo4.c

@@ -56,8 +56,8 @@ static const struct {
     int             is_2d_trans;
 } transforms[18] = {
     { ff_ivi_inverse_haar_8x8,  ff_ivi_dc_haar_2d,       1 },
-    { ff_ivi_inverse_haar_8x1,  ff_ivi_dc_haar_2d,       1 },
+    { ff_ivi_row_haar8,         ff_ivi_dc_haar_2d,       0 },
-    { ff_ivi_inverse_haar_1x8,  ff_ivi_dc_haar_2d,       1 },
+    { ff_ivi_col_haar8,         ff_ivi_dc_haar_2d,       0 },
     { ff_ivi_put_pixels_8x8,    ff_ivi_put_dc_pixel_8x8, 1 },
     { ff_ivi_inverse_slant_8x8, ff_ivi_dc_slant_2d,      1 },
     { ff_ivi_row_slant8,        ff_ivi_dc_row_slant,     1 },
@@ -65,13 +65,13 @@ static const struct {
     { NULL, NULL, 0 }, /* inverse DCT 8x8 */
     { NULL, NULL, 0 }, /* inverse DCT 8x1 */
     { NULL, NULL, 0 }, /* inverse DCT 1x8 */
-    { NULL, NULL, 0 }, /* inverse Haar 4x4 */
+    { ff_ivi_inverse_haar_4x4,  ff_ivi_dc_haar_2d,       1 },
     { ff_ivi_inverse_slant_4x4, ff_ivi_dc_slant_2d,      1 },
     { NULL, NULL, 0 }, /* no transform 4x4 */
-    { NULL, NULL, 0 }, /* inverse Haar 1x4 */
+    { ff_ivi_row_haar4,         ff_ivi_dc_haar_2d,       0 },
-    { NULL, NULL, 0 }, /* inverse Haar 4x1 */
+    { ff_ivi_col_haar4,         ff_ivi_dc_haar_2d,       0 },
-    { NULL, NULL, 0 }, /* inverse slant 1x4 */
+    { ff_ivi_row_slant4,        ff_ivi_dc_row_slant,     0 },
-    { NULL, NULL, 0 }, /* inverse slant 4x1 */
+    { ff_ivi_col_slant4,        ff_ivi_dc_col_slant,     0 },
     { NULL, NULL, 0 }, /* inverse DCT 4x4 */
 };
 

libavcodec/ivi_dsp.c

@@ -258,12 +258,14 @@ void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
     d8 = COMPENSATE(t8); }
 
 /** inverse 4-point Haar transform */
-#define INV_HAAR4(s1, s3, s5, s7) {\
+#define INV_HAAR4(s1, s3, s5, s7, d1, d2, d3, d4, t0, t1, t2, t3, t4) {\
-    HAAR_BFLY(s1, s5);  HAAR_BFLY(s1, s3);  HAAR_BFLY(s5, s7);\
+    IVI_HAAR_BFLY(s1, s3, t0, t1, t4);\
-    s1 = COMPENSATE(s1);\
+    IVI_HAAR_BFLY(t0, s5, t2, t3, t4);\
-    s3 = COMPENSATE(s3);\
+    d1 = COMPENSATE(t2);\
-    s5 = COMPENSATE(s5);\
+    d2 = COMPENSATE(t3);\
-    s7 = COMPENSATE(s7); }
+    IVI_HAAR_BFLY(t1, s7, t2, t3, t4);\
+    d3 = COMPENSATE(t2);\
+    d4 = COMPENSATE(t3); }
 
 void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
                              const uint8_t *flags)
@@ -320,60 +322,153 @@ void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
 #undef  COMPENSATE
 }
 
-void ff_ivi_inverse_haar_1x8(const int32_t *in, int16_t *out, uint32_t pitch,
+void ff_ivi_row_haar8(const int32_t *in, int16_t *out, uint32_t pitch,
-                             const uint8_t *flags)
+                      const uint8_t *flags)
+{
+    int     i;
+    int     t0, t1, t2, t3, t4, t5, t6, t7, t8;
+
+    /* apply the InvHaar8 to all rows */
+#define COMPENSATE(x) (x)
+    for (i = 0; i < 8; i++) {
+        if (   !in[0] && !in[1] && !in[2] && !in[3]
+            && !in[4] && !in[5] && !in[6] && !in[7]) {
+            memset(out, 0, 8 * sizeof(out[0]));
+        } else {
+            INV_HAAR8(in[0],  in[1],  in[2],  in[3],
+                      in[4],  in[5],  in[6],  in[7],
+                      out[0], out[1], out[2], out[3],
+                      out[4], out[5], out[6], out[7],
+                      t0, t1, t2, t3, t4, t5, t6, t7, t8);
+        }
+        in  += 8;
+        out += pitch;
+    }
+#undef  COMPENSATE
+}
+
+void ff_ivi_col_haar8(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags)
 {
     int     i;
-    const int32_t *src;
     int     t0, t1, t2, t3, t4, t5, t6, t7, t8;
 
     /* apply the InvHaar8 to all columns */
 #define COMPENSATE(x) (x)
-    src = in;
     for (i = 0; i < 8; i++) {
         if (flags[i]) {
-            INV_HAAR8(src[ 0], src[ 8], src[16], src[24],
+            INV_HAAR8(in[ 0], in[ 8], in[16], in[24],
-                      src[32], src[40], src[48], src[56],
+                      in[32], in[40], in[48], in[56],
-                      out[ 0], out[pitch], out[2*pitch], out[3*pitch],
+                      out[0 * pitch], out[1 * pitch],
-                      out[4*pitch], out[5*pitch], out[6*pitch], out[7*pitch],
+                      out[2 * pitch], out[3 * pitch],
+                      out[4 * pitch], out[5 * pitch],
+                      out[6 * pitch], out[7 * pitch],
                       t0, t1, t2, t3, t4, t5, t6, t7, t8);
         } else
-            out[      0]= out[  pitch]= out[2*pitch]= out[3*pitch]=
+            out[0 * pitch] = out[1 * pitch] =
-            out[4*pitch]= out[5*pitch]= out[6*pitch]= out[7*pitch]= 0;
+            out[2 * pitch] = out[3 * pitch] =
+            out[4 * pitch] = out[5 * pitch] =
+            out[6 * pitch] = out[7 * pitch] = 0;
 
-        src++;
+        in++;
         out++;
     }
 #undef  COMPENSATE
 }
 
-void ff_ivi_inverse_haar_8x1(const int32_t *in, int16_t *out, uint32_t pitch,
+void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, uint32_t pitch,
                              const uint8_t *flags)
 {
-    int     i;
+    int     i, shift, sp1, sp2;
     const int32_t *src;
-    int     t0, t1, t2, t3, t4, t5, t6, t7, t8;
+    int32_t *dst;
+    int     tmp[16];
+    int     t0, t1, t2, t3, t4;
+
+    /* apply the InvHaar4 to all columns */
+#define COMPENSATE(x) (x)
+    src = in;
+    dst = tmp;
+    for (i = 0; i < 4; i++) {
+        if (flags[i]) {
+            /* pre-scaling */
+            shift = !(i & 2);
+            sp1 = src[0] << shift;
+            sp2 = src[4] << shift;
+            INV_HAAR4(   sp1,    sp2, src[8], src[12],
+                      dst[0], dst[4], dst[8], dst[12],
+                      t0, t1, t2, t3, t4);
+        } else
+            dst[0] = dst[4] = dst[8] = dst[12] = 0;
+
+        src++;
+        dst++;
+    }
+#undef  COMPENSATE
 
     /* apply the InvHaar8 to all rows */
 #define COMPENSATE(x) (x)
-    src = in;
+    src = tmp;
-    for (i = 0; i < 8; i++) {
+    for (i = 0; i < 4; i++) {
-        if (   !src[0] && !src[1] && !src[2] && !src[3]
+        if (!src[0] && !src[1] && !src[2] && !src[3]) {
-            && !src[4] && !src[5] && !src[6] && !src[7]) {
+            memset(out, 0, 4 * sizeof(out[0]));
-            memset(out, 0, 8 * sizeof(out[0]));
         } else {
-            INV_HAAR8(src[0], src[1], src[2], src[3],
+            INV_HAAR4(src[0], src[1], src[2], src[3],
-                      src[4], src[5], src[6], src[7],
                       out[0], out[1], out[2], out[3],
-                      out[4], out[5], out[6], out[7],
+                      t0, t1, t2, t3, t4);
-                      t0, t1, t2, t3, t4, t5, t6, t7, t8);
         }
-        src += 8;
+        src += 4;
         out += pitch;
     }
 #undef  COMPENSATE
 }
 
+void ff_ivi_row_haar4(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags)
+{
+    int     i;
+    int     t0, t1, t2, t3, t4;
+
+    /* apply the InvHaar4 to all rows */
+#define COMPENSATE(x) (x)
+    for (i = 0; i < 4; i++) {
+        if (!in[0] && !in[1] && !in[2] && !in[3]) {
+            memset(out, 0, 4 * sizeof(out[0]));
+        } else {
+            INV_HAAR4(in[0], in[1], in[2], in[3],
+                      out[0], out[1], out[2], out[3],
+                      t0, t1, t2, t3, t4);
+        }
+        in  += 4;
+        out += pitch;
+    }
+#undef  COMPENSATE
+}
+
+void ff_ivi_col_haar4(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags)
+{
+    int     i;
+    int     t0, t1, t2, t3, t4;
+
+    /* apply the InvHaar8 to all columns */
+#define COMPENSATE(x) (x)
+    for (i = 0; i < 4; i++) {
+        if (flags[i]) {
+            INV_HAAR4(in[0], in[4], in[8], in[12],
+                      out[0 * pitch], out[1 * pitch],
+                      out[2 * pitch], out[3 * pitch],
+                      t0, t1, t2, t3, t4);
+        } else
+            out[0 * pitch] = out[1 * pitch] =
+            out[2 * pitch] = out[3 * pitch] = 0;
+
+        in++;
+        out++;
+    }
+#undef  COMPENSATE
+}
+
 void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch,
                        int blk_size)
 {
@@ -610,6 +705,49 @@ void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int bl
     }
 }
 
+void ff_ivi_row_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
+{
+    int     i;
+    int     t0, t1, t2, t3, t4;
+
+#define COMPENSATE(x) ((x + 1)>>1)
+    for (i = 0; i < 4; i++) {
+        if (!in[0] && !in[1] && !in[2] && !in[3]) {
+            memset(out, 0, 4*sizeof(out[0]));
+        } else {
+            IVI_INV_SLANT4( in[0],  in[1],  in[2],  in[3],
+                           out[0], out[1], out[2], out[3],
+                           t0, t1, t2, t3, t4);
+        }
+        in  += 4;
+        out += pitch;
+    }
+#undef COMPENSATE
+}
+
+void ff_ivi_col_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
+{
+    int     i, row2;
+    int     t0, t1, t2, t3, t4;
+
+    row2 = pitch << 1;
+
+#define COMPENSATE(x) ((x + 1)>>1)
+    for (i = 0; i < 4; i++) {
+        if (flags[i]) {
+            IVI_INV_SLANT4(in[0], in[4], in[8], in[12],
+                           out[0], out[pitch], out[row2], out[row2 + pitch],
+                           t0, t1, t2, t3, t4);
+        } else {
+            out[0] = out[pitch] = out[row2] = out[row2 + pitch] = 0;
+        }
+
+        in++;
+        out++;
+    }
+#undef COMPENSATE
+}
+
 void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
                            const uint8_t *flags)
 {

libavcodec/ivi_dsp.h

@@ -69,6 +69,71 @@ void ff_ivi_inverse_haar_8x1(const int32_t *in, int16_t *out, uint32_t pitch,
 void ff_ivi_inverse_haar_1x8(const int32_t *in, int16_t *out, uint32_t pitch,
                              const uint8_t *flags);
 
+/**
+ *  one-dimensional inverse 8-point Haar transform on rows for Indeo 4
+ *
+ *  @param[in]  in        pointer to the vector of transform coefficients
+ *  @param[out] out       pointer to the output buffer (frame)
+ *  @param[in]  pitch     pitch to move to the next y line
+ *  @param[in]  flags     pointer to the array of column flags:
+ *                        != 0 - non_empty column, 0 - empty one
+ *                        (this array must be filled by caller)
+ */
+void ff_ivi_row_haar8(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags);
+
+/**
+ *  one-dimensional inverse 8-point Haar transform on columns for Indeo 4
+ *
+ *  @param[in]  in        pointer to the vector of transform coefficients
+ *  @param[out] out       pointer to the output buffer (frame)
+ *  @param[in]  pitch     pitch to move to the next y line
+ *  @param[in]  flags     pointer to the array of column flags:
+ *                        != 0 - non_empty column, 0 - empty one
+ *                        (this array must be filled by caller)
+ */
+void ff_ivi_col_haar8(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags);
+
+/**
+ *  two-dimensional inverse Haar 4x4 transform for Indeo 4
+ *
+ *  @param[in]  in        pointer to the vector of transform coefficients
+ *  @param[out] out       pointer to the output buffer (frame)
+ *  @param[in]  pitch     pitch to move to the next y line
+ *  @param[in]  flags     pointer to the array of column flags:
+ *                        != 0 - non_empty column, 0 - empty one
+ *                        (this array must be filled by caller)
+ */
+void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, uint32_t pitch,
+                             const uint8_t *flags);
+
+/**
+ *  one-dimensional inverse 4-point Haar transform on rows for Indeo 4
+ *
+ *  @param[in]  in        pointer to the vector of transform coefficients
+ *  @param[out] out       pointer to the output buffer (frame)
+ *  @param[in]  pitch     pitch to move to the next y line
+ *  @param[in]  flags     pointer to the array of column flags:
+ *                        != 0 - non_empty column, 0 - empty one
+ *                        (this array must be filled by caller)
+ */
+void ff_ivi_row_haar4(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags);
+
+/**
+ *  one-dimensional inverse 4-point Haar transform on columns for Indeo 4
+ *
+ *  @param[in]  in        pointer to the vector of transform coefficients
+ *  @param[out] out       pointer to the output buffer (frame)
+ *  @param[in]  pitch     pitch to move to the next y line
+ *  @param[in]  flags     pointer to the array of column flags:
+ *                        != 0 - non_empty column, 0 - empty one
+ *                        (this array must be filled by caller)
+ */
+void ff_ivi_col_haar4(const int32_t *in, int16_t *out, uint32_t pitch,
+                      const uint8_t *flags);
+
 /**
  *  DC-only two-dimensional inverse Haar transform for Indeo 4.
  *  Performing the inverse transform in this case is equivalent to
@@ -145,6 +210,30 @@ void ff_ivi_row_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
 void ff_ivi_col_slant8(const int32_t *in, int16_t *out, uint32_t pitch,
                        const uint8_t *flags);
 
+/**
+ *  inverse 1D row slant transform
+ *
+ *  @param[in]    in      pointer to the vector of transform coefficients
+ *  @param[out]   out     pointer to the output buffer (frame)
+ *  @param[in]    pitch   pitch to move to the next y line
+ *  @param[in]    flags   pointer to the array of column flags (unused here)
+ */
+void ff_ivi_row_slant4(const int32_t *in, int16_t *out, uint32_t pitch,
+                       const uint8_t *flags);
+
+/**
+ *  inverse 1D column slant transform
+ *
+ *  @param[in]    in      pointer to the vector of transform coefficients
+ *  @param[out]   out     pointer to the output buffer (frame)
+ *  @param[in]    pitch   pitch to move to the next y line
+ *  @param[in]    flags   pointer to the array of column flags:
+ *                        != 0 - non_empty column, 0 - empty one
+ *                        (this array must be filled by caller)
+ */
+void ff_ivi_col_slant4(const int32_t *in, int16_t *out, uint32_t pitch,
+                       const uint8_t *flags);
+
 /**
  *  DC-only inverse row slant transform
  */

libavcodec/version.h

@@ -30,7 +30,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 55
 #define LIBAVCODEC_VERSION_MINOR  12
-#define LIBAVCODEC_VERSION_MICRO 101
+#define LIBAVCODEC_VERSION_MICRO 102
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \