shithub: libvpx

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Modified vpxdec loop

to work like vpxenc.  This is required for the frame-based
multithreading.


Change-Id: I338ae9c7d52b0541f3536cc033d6b89f00866e74

--- a/vp8/vp8_dx_iface.c

+++ b/vp8/vp8_dx_iface.c

@@ -659,7 +659,7 @@

     /* iter acts as a flip flop, so an image is only returned on the first

      * call to get_frame.

      */

-    if (!(*iter))

+    if (!(*iter) && ctx->yv12_frame_buffers.pbi[0])

     {

         YV12_BUFFER_CONFIG sd;

         int64_t time_stamp = 0, time_end_stamp = 0;

@@ -943,10 +943,10 @@

 {

     int *corrupted = va_arg(args, int *);

+    VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0];

-    if (corrupted)

+    if (corrupted && pbi)

     {

-        VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0];

         *corrupted = pbi->common.frame_to_show->corrupted;

         return VPX_CODEC_OK;

--- a/vpxdec.c

+++ b/vpxdec.c

@@ -714,6 +714,7 @@

   int                     do_scale = 0;

   int                     stream_w = 0, stream_h = 0;

   vpx_image_t             *scaled_img = NULL;

+  int                     frame_avail, got_data;

   /* Parse command line */

   exec_name = argv_[0];

@@ -980,30 +981,50 @@

     arg_skip--;

   }

+  frame_avail = 1;

+  got_data = 0;

+

   /* Decode file */

-  while (!read_frame(&input, &buf, &buf_sz, &buf_alloc_sz)) {

+  while (frame_avail || got_data) {

     vpx_codec_iter_t  iter = NULL;

     vpx_image_t    *img;

     struct vpx_usec_timer timer;

     int                   corrupted;

-    vpx_usec_timer_start(&timer);

+    frame_avail = 0;

+    if (!stop_after || frame_in < stop_after) {

+      if(!read_frame(&input, &buf, &buf_sz, &buf_alloc_sz)) {

+        frame_avail = 1;

+        frame_in++;

-    if (vpx_codec_decode(&decoder, buf, (unsigned int)buf_sz, NULL, 0)) {

-      const char *detail = vpx_codec_error_detail(&decoder);

-      fprintf(stderr, "Failed to decode frame: %s\n", vpx_codec_error(&decoder));

+        vpx_usec_timer_start(&timer);

-      if (detail)

-        fprintf(stderr, "  Additional information: %s\n", detail);

+        if (vpx_codec_decode(&decoder, buf, (unsigned int)buf_sz, NULL, 0)) {

+          const char *detail = vpx_codec_error_detail(&decoder);

+          fprintf(stderr, "Failed to decode frame: %s\n",

+                  vpx_codec_error(&decoder));

-      goto fail;

+          if (detail)

+            fprintf(stderr, "  Additional information: %s\n", detail);

+          goto fail;

+        }

+

+        vpx_usec_timer_mark(&timer);

+        dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);

+      }

     }

+    vpx_usec_timer_start(&timer);

+

+    got_data = 0;

+    if ((img = vpx_codec_get_frame(&decoder, &iter))) {

+      ++frame_out;

+      got_data = 1;

+    }

+

     vpx_usec_timer_mark(&timer);

     dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);

-    ++frame_in;

-

     if (vpx_codec_control(&decoder, VP8D_GET_FRAME_CORRUPTED, &corrupted)) {

       fprintf(stderr, "Failed VP8_GET_FRAME_CORRUPTED: %s\n",

               vpx_codec_error(&decoder));

@@ -1010,14 +1031,6 @@

       goto fail;

     }

     frames_corrupted += corrupted;

-

-    vpx_usec_timer_start(&timer);

-

-    if ((img = vpx_codec_get_frame(&decoder, &iter)))

-      ++frame_out;

-

-    vpx_usec_timer_mark(&timer);

-    dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);

     if (progress)

       show_progress(frame_in, frame_out, dx_time);