ansi: remove an extra return

[ffmpeg] / libavcodec / dvdec.c

diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
index 8f52959e0cba6bb54e1ebe594e31cb58bb581cb1..bc1bb55eb9ee07e171cafe84c5f3bdfaadb1fe2a 100644 (file)
--- a/libavcodec/dvdec.c
+++ b/libavcodec/dvdec.c
@@ -38,11 +38,11 @@
 #include "libavutil/pixdesc.h"
 #include "avcodec.h"
 #include "dsputil.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "put_bits.h"
 #include "simple_idct.h"
 #include "dvdata.h"
-#include "dvquant.h"
 
 typedef struct BlockInfo {
     const uint32_t *factor_table;
@@ -54,6 +54,8 @@ typedef struct BlockInfo {
     int shift_offset;
 } BlockInfo;
 
+static const int dv_iweight_bits = 14;
+
 /* decode AC coefficients */
 static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, DCTELEM *block)
 {
@@ -143,7 +145,7 @@ static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
     LOCAL_ALIGNED_16(DCTELEM, sblock, [5*DV_MAX_BPM], [64]);
     LOCAL_ALIGNED_16(uint8_t, mb_bit_buffer, [  80 + FF_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
     LOCAL_ALIGNED_16(uint8_t, vs_bit_buffer, [5*80 + FF_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
-    const int log2_blocksize = 3-s->avctx->lowres;
+    const int log2_blocksize = 3;
     int is_field_mode[5];
 
     assert((((int)mb_bit_buffer) & 7) == 0);
@@ -181,7 +183,7 @@ static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
                 mb->idct_put     = s->idct_put[dct_mode && log2_blocksize == 3];
                 mb->scan_table   = s->dv_zigzag[dct_mode];
                 mb->factor_table = &s->sys->idct_factor[(class1 == 3)*2*22*64 + dct_mode*22*64 +
-                                                        (quant + dv_quant_offset[class1])*64];
+                                                        (quant + ff_dv_quant_offset[class1])*64];
             }
             dc = dc << 2;
             /* convert to unsigned because 128 is not added in the
@@ -252,8 +254,8 @@ static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
         dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);
 
         /* idct_put'ting luminance */
-        if ((s->sys->pix_fmt == PIX_FMT_YUV420P) ||
-            (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8)) ||
+        if ((s->sys->pix_fmt == AV_PIX_FMT_YUV420P) ||
+            (s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) ||
             (s->sys->height >= 720 && mb_y != 134)) {
             y_stride = (s->picture.linesize[0] << ((!is_field_mode[mb_index]) * log2_blocksize));
         } else {
@@ -273,11 +275,11 @@ static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
         block += 4*64;
 
         /* idct_put'ting chrominance */
-        c_offset = (((mb_y >>  (s->sys->pix_fmt == PIX_FMT_YUV420P)) * s->picture.linesize[1] +
-                     (mb_x >> ((s->sys->pix_fmt == PIX_FMT_YUV411P) ? 2 : 1))) << log2_blocksize);
+        c_offset = (((mb_y >>  (s->sys->pix_fmt == AV_PIX_FMT_YUV420P)) * s->picture.linesize[1] +
+                     (mb_x >> ((s->sys->pix_fmt == AV_PIX_FMT_YUV411P) ? 2 : 1))) << log2_blocksize);
         for (j = 2; j; j--) {
             uint8_t *c_ptr = s->picture.data[j] + c_offset;
-            if (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8)) {
+            if (s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) {
                   uint64_t aligned_pixels[64/8];
                   uint8_t *pixels = (uint8_t*)aligned_pixels;
                   uint8_t *c_ptr1, *ptr1;
@@ -309,10 +311,10 @@ static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
 /* NOTE: exactly one frame must be given (120000 bytes for NTSC,
    144000 bytes for PAL - or twice those for 50Mbps) */
 static int dvvideo_decode_frame(AVCodecContext *avctx,
-                                 void *data, int *data_size,
+                                 void *data, int *got_frame,
                                  AVPacket *avpkt)
 {
-    const uint8_t *buf = avpkt->data;
+    uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     DVVideoContext *s = avctx->priv_data;
     const uint8_t* vsc_pack;
@@ -333,7 +335,7 @@ static int dvvideo_decode_frame(AVCodecContext *avctx,
     avctx->pix_fmt   = s->sys->pix_fmt;
     avctx->time_base = s->sys->time_base;
     avcodec_set_dimensions(avctx, s->sys->width, s->sys->height);
-    if (avctx->get_buffer(avctx, &s->picture) < 0) {
+    if (ff_get_buffer(avctx, &s->picture) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
@@ -347,7 +349,7 @@ static int dvvideo_decode_frame(AVCodecContext *avctx,
     emms_c();
 
     /* return image */
-    *data_size = sizeof(AVFrame);
+    *got_frame = 1;
     *(AVFrame*)data = s->picture;
 
     /* Determine the codec's sample_aspect ratio from the packet */
@@ -374,12 +376,11 @@ static int dvvideo_close(AVCodecContext *c)
 AVCodec ff_dvvideo_decoder = {
     .name           = "dvvideo",
     .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = CODEC_ID_DVVIDEO,
+    .id             = AV_CODEC_ID_DVVIDEO,
     .priv_data_size = sizeof(DVVideoContext),
     .init           = ff_dvvideo_init,
     .close          = dvvideo_close,
     .decode         = dvvideo_decode_frame,
     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_SLICE_THREADS,
-    .max_lowres     = 3,
     .long_name      = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
 };