eatqi: Remove MpegEncContext dependency

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 51 insertions, 39 deletions

diff --git a/libavcodec/eatqi.c b/libavcodec/eatqi.c
index 59bba9748f..f4cad9ceea 100644
--- a/libavcodec/eatqi.c
+++ b/libavcodec/eatqi.c
@@ -35,42 +35,50 @@
 #include "idctdsp.h"
 #include "internal.h"
 #include "mpeg12.h"
-#include "mpegvideo.h"
 
 typedef struct TqiContext {
-    MpegEncContext s;
+    GetBitContext gb;
+    BlockDSPContext bdsp;
     BswapDSPContext bsdsp;
+    IDCTDSPContext idsp;
+    ScanTable intra_scantable;
+
     void *bitstream_buf;
     unsigned int bitstream_buf_size;
+
+    int mb_x, mb_y;
+    uint16_t intra_matrix[64];
+    int last_dc[3];
+
     DECLARE_ALIGNED(16, int16_t, block)[6][64];
 } TqiContext;
 
 static av_cold int tqi_decode_init(AVCodecContext *avctx)
 {
     TqiContext *t = avctx->priv_data;
-    MpegEncContext *s = &t->s;
-    s->avctx = avctx;
-    ff_blockdsp_init(&s->bdsp, avctx);
+
+    ff_blockdsp_init(&t->bdsp, avctx);
     ff_bswapdsp_init(&t->bsdsp);
-    ff_idctdsp_init(&s->idsp, avctx);
-    ff_init_scantable_permutation(s->idsp.idct_permutation, FF_IDCT_PERM_NONE);
-    ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
-    s->qscale = 1;
+    ff_idctdsp_init(&t->idsp, avctx);
+    ff_init_scantable_permutation(t->idsp.idct_permutation, FF_IDCT_PERM_NONE);
+    ff_init_scantable(t->idsp.idct_permutation, &t->intra_scantable, ff_zigzag_direct);
+
     avctx->framerate = (AVRational){ 15, 1 };
     avctx->pix_fmt = AV_PIX_FMT_YUV420P;
     ff_mpeg12_init_vlcs();
     return 0;
 }
 
-static int tqi_decode_mb(MpegEncContext *s, int16_t (*block)[64])
+static int tqi_decode_mb(TqiContext *t, int16_t (*block)[64])
 {
     int n;
-    s->bdsp.clear_blocks(block[0]);
+
+    t->bdsp.clear_blocks(block[0]);
     for (n = 0; n < 6; n++) {
-        int ret = ff_mpeg1_decode_block_intra(&s->gb,
-                                              s->intra_matrix,
-                                              s->intra_scantable.permutated,
-                                              s->last_dc, block[n], n, 1);
+        int ret = ff_mpeg1_decode_block_intra(&t->gb,
+                                              t->intra_matrix,
+                                              t->intra_scantable.permutated,
+                                              t->last_dc, block[n], n, 1);
         if (ret < 0)
             return -1;
     }
@@ -78,31 +86,34 @@ static int tqi_decode_mb(MpegEncContext *s, int16_t (*block)[64])
     return 0;
 }
 
-static inline void tqi_idct_put(TqiContext *t, AVFrame *frame, int16_t (*block)[64])
+static inline void tqi_idct_put(AVCodecContext *avctx, AVFrame *frame,
+                                int16_t (*block)[64])
 {
-    MpegEncContext *s = &t->s;
+    TqiContext *t = avctx->priv_data;
     int linesize = frame->linesize[0];
-    uint8_t *dest_y  = frame->data[0] + (s->mb_y * 16* linesize            ) + s->mb_x * 16;
-    uint8_t *dest_cb = frame->data[1] + (s->mb_y * 8 * frame->linesize[1]) + s->mb_x * 8;
-    uint8_t *dest_cr = frame->data[2] + (s->mb_y * 8 * frame->linesize[2]) + s->mb_x * 8;
+    uint8_t *dest_y  = frame->data[0] + t->mb_y * 16 * linesize           + t->mb_x * 16;
+    uint8_t *dest_cb = frame->data[1] + t->mb_y *  8 * frame->linesize[1] + t->mb_x *  8;
+    uint8_t *dest_cr = frame->data[2] + t->mb_y *  8 * frame->linesize[2] + t->mb_x *  8;
 
     ff_ea_idct_put_c(dest_y                 , linesize, block[0]);
     ff_ea_idct_put_c(dest_y              + 8, linesize, block[1]);
     ff_ea_idct_put_c(dest_y + 8*linesize    , linesize, block[2]);
     ff_ea_idct_put_c(dest_y + 8*linesize + 8, linesize, block[3]);
-    if(!(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
+
+    if (!(avctx->flags & AV_CODEC_FLAG_GRAY)) {
         ff_ea_idct_put_c(dest_cb, frame->linesize[1], block[4]);
         ff_ea_idct_put_c(dest_cr, frame->linesize[2], block[5]);
     }
 }
 
-static void tqi_calculate_qtable(MpegEncContext *s, int quant)
+static void tqi_calculate_qtable(TqiContext *t, int quant)
 {
     const int qscale = (215 - 2*quant)*5;
     int i;
-    s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11;
+
+    t->intra_matrix[0] = (ff_inv_aanscales[0] * ff_mpeg1_default_intra_matrix[0]) >> 11;
     for(i=1; i<64; i++)
-        s->intra_matrix[i] = (ff_inv_aanscales[i]*ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>14;
+        t->intra_matrix[i] = (ff_inv_aanscales[i] * ff_mpeg1_default_intra_matrix[i] * qscale + 32) >> 14;
 }
 
 static int tqi_decode_frame(AVCodecContext *avctx,
@@ -113,16 +124,15 @@ static int tqi_decode_frame(AVCodecContext *avctx,
     int buf_size = avpkt->size;
     const uint8_t *buf_end = buf+buf_size;
     TqiContext *t = avctx->priv_data;
-    MpegEncContext *s = &t->s;
     AVFrame *frame = data;
-    int ret;
+    int ret, w, h;
 
-    s->width  = AV_RL16(&buf[0]);
-    s->height = AV_RL16(&buf[2]);
-    tqi_calculate_qtable(s, buf[4]);
+    w = AV_RL16(&buf[0]);
+    h = AV_RL16(&buf[2]);
+    tqi_calculate_qtable(t, buf[4]);
     buf += 8;
 
-    ret = ff_set_dimensions(s->avctx, s->width, s->height);
+    ret = ff_set_dimensions(avctx, w, h);
     if (ret < 0)
         return ret;
 
@@ -137,15 +147,17 @@ static int tqi_decode_frame(AVCodecContext *avctx,
         return AVERROR(ENOMEM);
     t->bsdsp.bswap_buf(t->bitstream_buf, (const uint32_t *) buf,
                        (buf_end - buf) / 4);
-    init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf));
-
-    s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 0;
-    for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++)
-    for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++)
-    {
-        if (tqi_decode_mb(s, t->block) < 0)
-            break;
-        tqi_idct_put(t, frame, t->block);
+    init_get_bits(&t->gb, t->bitstream_buf, 8 * (buf_end - buf));
+
+    t->last_dc[0] =
+    t->last_dc[1] =
+    t->last_dc[2] = 0;
+    for (t->mb_y = 0; t->mb_y < (h + 15) / 16; t->mb_y++) {
+        for (t->mb_x = 0; t->mb_x < (w + 15) / 16; t->mb_x++) {
+            if (tqi_decode_mb(t, t->block) < 0)
+                break;
+            tqi_idct_put(avctx, frame, t->block);
+        }
     }
 
     *got_frame = 1;