mov_chan: Pass a separate AVIOContext for reading

[ffmpeg] / libavcodec / dv.c

diff --git a/libavcodec/dv.c b/libavcodec/dv.c
index 1a0075b57b8760cfba693ce1125a21741e1a04dd..67e6fd7bc529e7de58d5dbb4856d08fa82bbebe1 100644 (file)
--- a/libavcodec/dv.c
+++ b/libavcodec/dv.c
@@ -46,7 +46,6 @@
 #include "put_bits.h"
 #include "simple_idct.h"
 #include "dvdata.h"
-#include "dvquant.h"
 #include "dv_tablegen.h"
 
 /* XXX: also include quantization */
@@ -167,6 +166,15 @@ static inline void dv_calc_mb_coordinates(const DVprofile *d, int chan, int seq,
     }
 }
 
+/* quantization quanta by QNO for DV100 */
+static const uint8_t dv100_qstep[16] = {
+    1, /* QNO = 0 and 1 both have no quantization */
+    1,
+    2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52
+};
+
+static const uint8_t dv_quant_areas[4]  = { 6, 21, 43, 64 };
+
 int ff_dv_init_dynamic_tables(const DVprofile *d)
 {
     int j,i,c,s,p;
@@ -195,11 +203,11 @@ int ff_dv_init_dynamic_tables(const DVprofile *d)
         factor1 = &d->idct_factor[0];
         factor2 = &d->idct_factor[DV_PROFILE_IS_HD(d)?4096:2816];
         if (d->height == 720) {
-            iweight1 = &dv_iweight_720_y[0];
-            iweight2 = &dv_iweight_720_c[0];
+            iweight1 = &ff_dv_iweight_720_y[0];
+            iweight2 = &ff_dv_iweight_720_c[0];
         } else {
-            iweight1 = &dv_iweight_1080_y[0];
-            iweight2 = &dv_iweight_1080_c[0];
+            iweight1 = &ff_dv_iweight_1080_y[0];
+            iweight2 = &ff_dv_iweight_1080_c[0];
         }
         if (DV_PROFILE_IS_HD(d)) {
             for (c = 0; c < 4; c++) {
@@ -211,12 +219,12 @@ int ff_dv_init_dynamic_tables(const DVprofile *d)
                 }
             }
         } else {
-            iweight1 = &dv_iweight_88[0];
-            for (j = 0; j < 2; j++, iweight1 = &dv_iweight_248[0]) {
+            iweight1 = &ff_dv_iweight_88[0];
+            for (j = 0; j < 2; j++, iweight1 = &ff_dv_iweight_248[0]) {
                 for (s = 0; s < 22; s++) {
                     for (i = c = 0; c < 4; c++) {
                         for (; i < dv_quant_areas[c]; i++) {
-                            *factor1   = iweight1[i] << (dv_quant_shifts[s][c] + 1);
+                            *factor1   = iweight1[i] << (ff_dv_quant_shifts[s][c] + 1);
                             *factor2++ = (*factor1++) << 1;
                         }
                     }
@@ -286,8 +294,6 @@ av_cold int ff_dvvideo_init(AVCodecContext *avctx)
             ff_dv_rl_vlc[i].run   = run;
         }
         ff_free_vlc(&dv_vlc);
-
-        dv_vlc_map_tableinit();
     }
 
     /* Generic DSP setup */
@@ -305,13 +311,7 @@ av_cold int ff_dvvideo_init(AVCodecContext *avctx)
     /* 248DCT setup */
     s->fdct[1]     = dsp.fdct248;
     s->idct_put[1] = ff_simple_idct248_put;  // FIXME: need to add it to DSP
-    if (avctx->lowres){
-        for (i = 0; i < 64; i++){
-            int j = ff_zigzag248_direct[i];
-            s->dv_zigzag[1][i] = dsp.idct_permutation[(j & 7) + (j & 8) * 4 + (j & 48) / 2];
-        }
-    }else
-        memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
+    memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
 
     avctx->coded_frame = &s->picture;
     s->avctx = avctx;
@@ -330,6 +330,8 @@ static av_cold int dvvideo_init_encoder(AVCodecContext *avctx)
         return AVERROR(EINVAL);
     }
 
+    dv_vlc_map_tableinit();
+
     return ff_dvvideo_init(avctx);
 }
 
@@ -467,6 +469,28 @@ static av_always_inline int dv_guess_dct_mode(DVVideoContext *s, uint8_t *data,
     return 0;
 }
 
+static const int dv_weight_bits = 18;
+static const int dv_weight_88[64] = {
+ 131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,
+ 237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,
+ 224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,
+ 212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,
+ 206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,
+ 200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,
+ 174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,
+ 170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
+};
+static const int dv_weight_248[64] = {
+ 131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
+ 224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
+ 211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
+ 242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
+ 200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
+ 229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
+ 175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
+ 195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
+};
+
 static av_always_inline int dv_init_enc_block(EncBlockInfo* bi, uint8_t *data, int linesize, DVVideoContext *s, int bias)
 {
     const int *weight;
@@ -578,7 +602,7 @@ static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos)
           size[i] = 0;
           for (j = 0; j < 6; j++, b++) {
              for (a = 0; a < 4; a++) {
-                if (b->area_q[a] != dv_quant_shifts[qnos[i] + dv_quant_offset[b->cno]][a]) {
+                if (b->area_q[a] != ff_dv_quant_shifts[qnos[i] + ff_dv_quant_offset[b->cno]][a]) {
                     b->bit_size[a] = 1; // 4 areas 4 bits for EOB :)
                     b->area_q[a]++;
                     prev = b->prev[a];
@@ -638,7 +662,7 @@ static int dv_encode_video_segment(AVCodecContext *avctx, void *arg)
     int mb_x, mb_y, c_offset, linesize, y_stride;
     uint8_t*  y_ptr;
     uint8_t*  dif;
-    LOCAL_ALIGNED_8(uint8_t, scratch, [64]);
+    LOCAL_ALIGNED_8(uint8_t, scratch, [128]);
     EncBlockInfo  enc_blks[5*DV_MAX_BPM];
     PutBitContext pbs[5*DV_MAX_BPM];
     PutBitContext* pb;
@@ -693,10 +717,10 @@ static int dv_encode_video_segment(AVCodecContext *avctx, void *arg)
                     b[0] = c_ptr[0]; b[1] = c_ptr[1]; b[2] = c_ptr[2]; b[3] = c_ptr[3];
                     b[4] =     d[0]; b[5] =     d[1]; b[6] =     d[2]; b[7] =     d[3];
                     c_ptr += linesize;
-                    b += 8;
+                    b += 16;
                 }
                 c_ptr = scratch;
-                linesize = 8;
+                linesize = 16;
             }
 
             vs_bit_size += dv_init_enc_block(    enc_blk++, c_ptr           , linesize, s, 1);
@@ -955,7 +979,7 @@ static int dvvideo_encode_frame(AVCodecContext *c, AVPacket *pkt,
 AVCodec ff_dvvideo_encoder = {
     .name           = "dvvideo",
     .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = CODEC_ID_DVVIDEO,
+    .id             = AV_CODEC_ID_DVVIDEO,
     .priv_data_size = sizeof(DVVideoContext),
     .init           = dvvideo_init_encoder,
     .encode2        = dvvideo_encode_frame,