st/omx: initial OpenMAX support v3

Featuring a full grown MPEG2 and H264 decoder and a couple of hundred bugs.

v2 (Leo): fix an error for pic_order_cnt_type 1
v3 (Leo): implement support for field decoding

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Leo Liu <leo.liu@amd.com>

1 files changed, 584 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/omx/vid_dec.c b/src/gallium/state_trackers/omx/vid_dec.c
new file mode 100644
index 0000000..7be1dad
--- /dev/null
+++ b/src/gallium/state_trackers/omx/vid_dec.c
@@ -0,0 +1,584 @@
+/**************************************************************************
+ *
+ * Copyright 2013 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/*
+ * Authors:
+ *      Christian König <christian.koenig@amd.com>
+ *
+ */
+
+
+#include <assert.h>
+
+#include <OMX_Video.h>
+
+/* bellagio defines a DEBUG macro that we don't want */
+#ifndef DEBUG
+#include <bellagio/omxcore.h>
+#undef DEBUG
+#else
+#include <bellagio/omxcore.h>
+#endif
+
+#include <bellagio/omx_base_video_port.h>
+
+#include "pipe/p_screen.h"
+#include "pipe/p_video_codec.h"
+#include "util/u_memory.h"
+#include "util/u_surface.h"
+#include "vl/vl_vlc.h"
+
+#include "entrypoint.h"
+#include "vid_dec.h"
+
+static OMX_ERRORTYPE vid_dec_Constructor(OMX_COMPONENTTYPE *comp, OMX_STRING name);
+static OMX_ERRORTYPE vid_dec_Destructor(OMX_COMPONENTTYPE *comp);
+static OMX_ERRORTYPE vid_dec_SetParameter(OMX_HANDLETYPE handle, OMX_INDEXTYPE idx, OMX_PTR param);
+static OMX_ERRORTYPE vid_dec_GetParameter(OMX_HANDLETYPE handle, OMX_INDEXTYPE idx, OMX_PTR param);
+static OMX_ERRORTYPE vid_dec_MessageHandler(OMX_COMPONENTTYPE *comp, internalRequestMessageType *msg);
+static OMX_ERRORTYPE vid_dec_DecodeBuffer(omx_base_PortType *port, OMX_BUFFERHEADERTYPE *buf);
+static OMX_ERRORTYPE vid_dec_FreeDecBuffer(omx_base_PortType *port, OMX_U32 idx, OMX_BUFFERHEADERTYPE *buf);
+static void vid_dec_FrameDecoded(OMX_COMPONENTTYPE *comp, OMX_BUFFERHEADERTYPE* input, OMX_BUFFERHEADERTYPE* output);
+
+static void vid_dec_name(char str[OMX_MAX_STRINGNAME_SIZE])
+{
+   snprintf(str, OMX_MAX_STRINGNAME_SIZE, OMX_VID_DEC_BASE_NAME, driver_descriptor.name);
+}
+
+static void vid_dec_name_mpeg2(char str[OMX_MAX_STRINGNAME_SIZE])
+{
+   snprintf(str, OMX_MAX_STRINGNAME_SIZE, OMX_VID_DEC_MPEG2_NAME, driver_descriptor.name);
+}
+
+static void vid_dec_name_avc(char str[OMX_MAX_STRINGNAME_SIZE])
+{
+   snprintf(str, OMX_MAX_STRINGNAME_SIZE, OMX_VID_DEC_AVC_NAME, driver_descriptor.name);
+}
+
+OMX_ERRORTYPE vid_dec_LoaderComponent(stLoaderComponentType *comp)
+{
+   comp->componentVersion.s.nVersionMajor = 0;
+   comp->componentVersion.s.nVersionMinor = 0;
+   comp->componentVersion.s.nRevision = 0;
+   comp->componentVersion.s.nStep = 1;
+   comp->name_specific_length = 2;
+
+   comp->name = CALLOC(1, OMX_MAX_STRINGNAME_SIZE);
+   if (comp->name == NULL)
+      goto error;
+
+   comp->name_specific = CALLOC(comp->name_specific_length, sizeof(char *));
+   if (comp->name_specific == NULL)
+      goto error;
+
+   comp->name_specific[0] = CALLOC(1, OMX_MAX_STRINGNAME_SIZE);
+   if (comp->name_specific[0] == NULL)
+      goto error;
+
+   comp->name_specific[1] = CALLOC(1, OMX_MAX_STRINGNAME_SIZE);
+   if (comp->name_specific[1] == NULL)
+      goto error;
+
+   comp->role_specific = CALLOC(comp->name_specific_length, sizeof(char *));
+   if (comp->role_specific == NULL)
+      goto error;
+
+   comp->role_specific[0] = CALLOC(1, OMX_MAX_STRINGNAME_SIZE);
+   if (comp->role_specific[0] == NULL)
+      goto error;
+
+   comp->role_specific[1] = CALLOC(1, OMX_MAX_STRINGNAME_SIZE);
+   if (comp->role_specific[1] == NULL)
+      goto error;
+
+   vid_dec_name(comp->name);
+   vid_dec_name_mpeg2(comp->name_specific[0]);
+   vid_dec_name_avc(comp->name_specific[1]);
+
+   strcpy(comp->role_specific[0], OMX_VID_DEC_MPEG2_ROLE);
+   strcpy(comp->role_specific[1], OMX_VID_DEC_AVC_ROLE);
+
+   comp->constructor = vid_dec_Constructor;
+ 
+   return OMX_ErrorNone;
+
+error:
+
+   FREE(comp->name);
+
+   if (comp->name_specific) {
+      FREE(comp->name_specific[0]);
+      FREE(comp->name_specific[1]);
+      FREE(comp->name_specific);
+   }
+
+   if (comp->role_specific) {
+      FREE(comp->role_specific[0]);
+      FREE(comp->role_specific[1]);
+      FREE(comp->role_specific);
+   }
+
+   return OMX_ErrorInsufficientResources;
+}
+
+static OMX_ERRORTYPE vid_dec_Constructor(OMX_COMPONENTTYPE *comp, OMX_STRING name)
+{
+   char tmpstr[OMX_MAX_STRINGNAME_SIZE];
+   vid_dec_PrivateType *priv;
+   omx_base_video_PortType *port;
+   struct pipe_screen *screen;
+   OMX_ERRORTYPE r;
+   int i;
+
+   assert(!comp->pComponentPrivate);
+
+   priv = comp->pComponentPrivate = CALLOC(1, sizeof(vid_dec_PrivateType));
+   if (!priv)
+      return OMX_ErrorInsufficientResources;
+
+   r = omx_base_filter_Constructor(comp, name);
+   if (r)
+	return r;
+
+   priv->profile = PIPE_VIDEO_PROFILE_UNKNOWN;
+
+   vid_dec_name_mpeg2(tmpstr);
+   if (!strcmp(name, tmpstr))
+      priv->profile = PIPE_VIDEO_PROFILE_MPEG2_MAIN;
+
+   vid_dec_name_avc(tmpstr);
+   if (!strcmp(name, tmpstr))
+      priv->profile = PIPE_VIDEO_PROFILE_MPEG4_AVC_HIGH;
+
+   priv->BufferMgmtCallback = vid_dec_FrameDecoded;
+   priv->messageHandler = vid_dec_MessageHandler;
+   priv->destructor = vid_dec_Destructor;
+
+   comp->SetParameter = vid_dec_SetParameter;
+   comp->GetParameter = vid_dec_GetParameter;
+
+   priv->screen = omx_get_screen();
+   if (!priv->screen)
+      return OMX_ErrorInsufficientResources;
+
+   screen = priv->screen->pscreen;
+   priv->pipe = screen->context_create(screen, priv->screen);
+   if (!priv->pipe)
+      return OMX_ErrorInsufficientResources;
+
+   priv->sPortTypesParam[OMX_PortDomainVideo].nStartPortNumber = 0;
+   priv->sPortTypesParam[OMX_PortDomainVideo].nPorts = 2;
+   priv->ports = CALLOC(2, sizeof(omx_base_PortType *));
+   if (!priv->ports)
+      return OMX_ErrorInsufficientResources;
+
+   for (i = 0; i < 2; ++i) {
+      priv->ports[i] = CALLOC(1, sizeof(omx_base_video_PortType));
+      if (!priv->ports[i])
+         return OMX_ErrorInsufficientResources;
+
+      base_video_port_Constructor(comp, &priv->ports[i], i, i == 0);
+   }
+
+   port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX];
+   strcpy(port->sPortParam.format.video.cMIMEType,"video/MPEG2");
+   port->sPortParam.nBufferCountMin = 8;
+   port->sPortParam.nBufferCountActual = 8;
+   port->sPortParam.nBufferSize = DEFAULT_OUT_BUFFER_SIZE;
+   port->sPortParam.format.video.nFrameWidth = 176;
+   port->sPortParam.format.video.nFrameHeight = 144;
+   port->sPortParam.format.video.eCompressionFormat = OMX_VIDEO_CodingMPEG2;
+   port->sVideoParam.eCompressionFormat = OMX_VIDEO_CodingMPEG2;
+   port->Port_SendBufferFunction = vid_dec_DecodeBuffer;
+   port->Port_FreeBuffer = vid_dec_FreeDecBuffer;
+
+   port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_OUTPUTPORT_INDEX];
+   port->sPortParam.nBufferCountActual = 8;
+   port->sPortParam.nBufferCountMin = 4;
+   port->sPortParam.format.video.nFrameWidth = 176;
+   port->sPortParam.format.video.nFrameHeight = 144;
+   port->sPortParam.format.video.eColorFormat = OMX_COLOR_FormatYUV420SemiPlanar;
+   port->sVideoParam.eColorFormat = OMX_COLOR_FormatYUV420SemiPlanar;
+
+   return OMX_ErrorNone;
+}
+
+static OMX_ERRORTYPE vid_dec_Destructor(OMX_COMPONENTTYPE *comp)
+{
+   vid_dec_PrivateType* priv = comp->pComponentPrivate;
+   int i;
+
+   if (priv->ports) {
+      for (i = 0; i < priv->sPortTypesParam[OMX_PortDomainVideo].nPorts; ++i) {
+         if(priv->ports[i])
+            priv->ports[i]->PortDestructor(priv->ports[i]);
+      }
+      FREE(priv->ports);
+      priv->ports=NULL;
+   }
+
+   if (priv->pipe)
+      priv->pipe->destroy(priv->pipe);
+
+   if (priv->screen)
+      omx_put_screen();
+
+   omx_base_filter_Destructor(comp);
+   return OMX_ErrorNone;
+}
+
+static OMX_ERRORTYPE vid_dec_SetParameter(OMX_HANDLETYPE handle, OMX_INDEXTYPE idx, OMX_PTR param)
+{
+   OMX_COMPONENTTYPE *comp = handle;
+   vid_dec_PrivateType *priv = comp->pComponentPrivate;
+   OMX_ERRORTYPE r;
+
+   if (!param)
+      return OMX_ErrorBadParameter;
+
+   switch(idx) {
+   case OMX_IndexParamPortDefinition: {
+      OMX_PARAM_PORTDEFINITIONTYPE *def = param;
+
+      r = omx_base_component_SetParameter(handle, idx, param);
+      if (r)
+         return r;
+
+      if (def->nPortIndex == OMX_BASE_FILTER_INPUTPORT_INDEX) {
+         omx_base_video_PortType *port;
+         unsigned framesize = def->format.video.nFrameWidth * def->format.video.nFrameHeight;
+
+         port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX];
+         port->sPortParam.nBufferSize = framesize * 512 / (16*16);
+
+         port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_OUTPUTPORT_INDEX];
+         port->sPortParam.format.video.nFrameWidth = def->format.video.nFrameWidth;
+         port->sPortParam.format.video.nFrameHeight = def->format.video.nFrameHeight;
+         port->sPortParam.format.video.nStride = def->format.video.nFrameWidth;
+         port->sPortParam.format.video.nSliceHeight = def->format.video.nFrameHeight;
+         port->sPortParam.nBufferSize = framesize*3/2;
+
+         priv->callbacks->EventHandler(comp, priv->callbackData, OMX_EventPortSettingsChanged,
+                                       OMX_BASE_FILTER_OUTPUTPORT_INDEX, 0, NULL);
+      }
+      break;
+   }
+   case OMX_IndexParamStandardComponentRole: {
+      OMX_PARAM_COMPONENTROLETYPE *role = param;
+
+      r = checkHeader(param, sizeof(OMX_PARAM_COMPONENTROLETYPE));
+      if (r)
+         return r;
+ 
+      if (!strcmp((char *)role->cRole, OMX_VID_DEC_MPEG2_ROLE)) {
+         priv->profile = PIPE_VIDEO_PROFILE_MPEG2_MAIN;
+      } else if (!strcmp((char *)role->cRole, OMX_VID_DEC_AVC_ROLE)) {
+         priv->profile = PIPE_VIDEO_PROFILE_MPEG4_AVC_HIGH;
+      } else {
+         return OMX_ErrorBadParameter;
+      }
+
+      break;
+   }
+   case OMX_IndexParamVideoPortFormat: {
+      OMX_VIDEO_PARAM_PORTFORMATTYPE *format = param;
+      omx_base_video_PortType *port;
+
+      r = checkHeader(param, sizeof(OMX_VIDEO_PARAM_PORTFORMATTYPE));
+      if (r)
+         return r;
+
+      if (format->nPortIndex > 1)
+         return OMX_ErrorBadPortIndex;
+
+      port = (omx_base_video_PortType *)priv->ports[format->nPortIndex];
+      memcpy(&port->sVideoParam, format, sizeof(OMX_VIDEO_PARAM_PORTFORMATTYPE));
+      break;
+   }
+   default:
+      return omx_base_component_SetParameter(handle, idx, param);
+   }
+   return OMX_ErrorNone;
+}
+
+static OMX_ERRORTYPE vid_dec_GetParameter(OMX_HANDLETYPE handle, OMX_INDEXTYPE idx, OMX_PTR param)
+{
+   OMX_COMPONENTTYPE *comp = handle;
+   vid_dec_PrivateType *priv = comp->pComponentPrivate;
+   OMX_ERRORTYPE r;
+
+   if (!param)
+      return OMX_ErrorBadParameter;
+
+   switch(idx) {
+   case OMX_IndexParamStandardComponentRole: {
+      OMX_PARAM_COMPONENTROLETYPE *role = param;
+
+      r = checkHeader(param, sizeof(OMX_PARAM_COMPONENTROLETYPE));
+      if (r)
+         return r;
+
+      if (priv->profile == PIPE_VIDEO_PROFILE_MPEG2_MAIN)
+         strcpy((char *)role->cRole, OMX_VID_DEC_MPEG2_ROLE);
+      else if (priv->profile == PIPE_VIDEO_PROFILE_MPEG4_AVC_HIGH)
+         strcpy((char *)role->cRole, OMX_VID_DEC_AVC_ROLE);
+ 
+      break;
+   }
+
+   case OMX_IndexParamVideoInit:
+      r = checkHeader(param, sizeof(OMX_PORT_PARAM_TYPE));
+      if (r)
+         return r;
+
+      memcpy(param, &priv->sPortTypesParam[OMX_PortDomainVideo], sizeof(OMX_PORT_PARAM_TYPE));
+      break;
+
+   case OMX_IndexParamVideoPortFormat: {
+      OMX_VIDEO_PARAM_PORTFORMATTYPE *format = param;
+      omx_base_video_PortType *port;
+
+      r = checkHeader(param, sizeof(OMX_VIDEO_PARAM_PORTFORMATTYPE));
+      if (r)
+         return r;
+
+      if (format->nPortIndex > 1)
+         return OMX_ErrorBadPortIndex;
+
+      port = (omx_base_video_PortType *)priv->ports[format->nPortIndex];
+      memcpy(format, &port->sVideoParam, sizeof(OMX_VIDEO_PARAM_PORTFORMATTYPE));
+      break;
+   }
+
+   default:
+      return omx_base_component_GetParameter(handle, idx, param);
+
+   }
+   return OMX_ErrorNone;
+}
+
+static OMX_ERRORTYPE vid_dec_MessageHandler(OMX_COMPONENTTYPE* comp, internalRequestMessageType *msg)
+{
+   vid_dec_PrivateType* priv = comp->pComponentPrivate;
+
+   if (msg->messageType == OMX_CommandStateSet) {
+      if ((msg->messageParam == OMX_StateIdle ) && (priv->state == OMX_StateLoaded)) {
+
+         struct pipe_video_codec templat = {};
+         omx_base_video_PortType *port;
+
+         port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX];
+
+         templat.profile = priv->profile;
+         templat.entrypoint = PIPE_VIDEO_ENTRYPOINT_BITSTREAM;
+         templat.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420;
+         templat.width = port->sPortParam.format.video.nFrameWidth;
+         templat.height = port->sPortParam.format.video.nFrameHeight;
+         templat.max_references = 2;
+         templat.expect_chunked_decode = true;
+
+         priv->codec = priv->pipe->create_video_codec(priv->pipe, &templat);
+
+         if (priv->profile == PIPE_VIDEO_PROFILE_MPEG2_MAIN)
+            vid_dec_mpeg12_Init(priv);
+         else if (priv->profile == PIPE_VIDEO_PROFILE_MPEG4_AVC_HIGH)
+            vid_dec_h264_Init(priv);
+
+      } else if ((msg->messageParam == OMX_StateLoaded) && (priv->state == OMX_StateIdle)) {
+         if (priv->shadow) {
+            priv->shadow->destroy(priv->shadow);
+            priv->shadow = NULL;
+         }
+         if (priv->codec) {
+            priv->codec->destroy(priv->codec);
+            priv->codec = NULL;
+         }
+      }
+   }
+
+   return omx_base_component_MessageHandler(comp, msg);
+}
+
+void vid_dec_NeedTarget(vid_dec_PrivateType *priv)
+{
+   struct pipe_video_buffer templat = {};
+   omx_base_video_PortType *port;
+
+   port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX];
+
+   if (!priv->target) {
+      templat.buffer_format = PIPE_FORMAT_NV12;
+      templat.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420;
+      templat.width = port->sPortParam.format.video.nFrameWidth;
+      templat.height = port->sPortParam.format.video.nFrameHeight;
+      templat.interlaced = false;
+      priv->target = priv->pipe->create_video_buffer(priv->pipe, &templat);
+   }
+}
+
+static void vid_dec_FreeInputPortPrivate(OMX_BUFFERHEADERTYPE *buf)
+{
+   struct pipe_video_buffer *vbuf = buf->pInputPortPrivate;
+   if (!vbuf)
+      return;
+
+   vbuf->destroy(vbuf);
+   buf->pInputPortPrivate = NULL;
+}
+
+static OMX_ERRORTYPE vid_dec_DecodeBuffer(omx_base_PortType *port, OMX_BUFFERHEADERTYPE *buf)
+{
+   OMX_COMPONENTTYPE* comp = port->standCompContainer;
+   vid_dec_PrivateType *priv = comp->pComponentPrivate;
+   unsigned i = priv->num_in_buffers++;
+   OMX_ERRORTYPE r;
+
+   priv->in_buffers[i] = buf;
+   priv->sizes[i] = buf->nFilledLen;
+   priv->inputs[i] = buf->pBuffer;
+
+   while (priv->num_in_buffers > (!!(buf->nFlags & OMX_BUFFERFLAG_EOS) ? 0 : 1)) {
+      bool eos = !!(priv->in_buffers[0]->nFlags & OMX_BUFFERFLAG_EOS);
+      unsigned min_bits_left = eos ? 32 : MAX2(buf->nFilledLen * 8, 32);
+      struct vl_vlc vlc;
+
+      vl_vlc_init(&vlc, priv->num_in_buffers, priv->inputs, priv->sizes);
+
+      if (priv->slice)
+         priv->bytes_left = vl_vlc_bits_left(&vlc) / 8;
+
+      while (vl_vlc_bits_left(&vlc) > min_bits_left) {
+         priv->Decode(priv, &vlc, min_bits_left);
+         vl_vlc_fillbits(&vlc);
+      }
+
+      if (priv->slice) {
+         unsigned bytes = priv->bytes_left - vl_vlc_bits_left(&vlc) / 8;
+
+         priv->codec->decode_bitstream(priv->codec, priv->target, &priv->picture.base,
+                                       1, &priv->slice, &bytes);
+
+         if (priv->num_in_buffers)
+            priv->slice = priv->inputs[1];
+         else
+            priv->slice = NULL;
+      }
+
+      if (eos && priv->frame_started)
+         priv->EndFrame(priv);
+
+      if (priv->frame_finished) {
+         priv->frame_finished = false;
+         priv->in_buffers[0]->nFilledLen = priv->in_buffers[0]->nAllocLen;
+         r = base_port_SendBufferFunction(port, priv->in_buffers[0]);
+      } else if (eos) {
+         vid_dec_FreeInputPortPrivate(priv->in_buffers[0]);
+         priv->in_buffers[0]->nFilledLen = priv->in_buffers[0]->nAllocLen;
+         r = base_port_SendBufferFunction(port, priv->in_buffers[0]);
+      } else {
+         priv->in_buffers[0]->nFilledLen = 0;
+         r = port->ReturnBufferFunction(port, priv->in_buffers[0]);
+      }
+
+      if (--priv->num_in_buffers) {
+         unsigned delta = (min_bits_left - vl_vlc_bits_left(&vlc)) / 8;
+
+         priv->in_buffers[0] = priv->in_buffers[1];
+         priv->sizes[0] = priv->sizes[1] - delta;
+         priv->inputs[0] = priv->inputs[1] + delta;
+      }
+
+      if (r)
+         return r;
+   }
+ 
+   return OMX_ErrorNone;
+}
+
+static OMX_ERRORTYPE vid_dec_FreeDecBuffer(omx_base_PortType *port, OMX_U32 idx, OMX_BUFFERHEADERTYPE *buf)
+{
+   vid_dec_FreeInputPortPrivate(buf);
+   return base_port_FreeBuffer(port, idx, buf);
+}
+
+static void vid_dec_FillOutput(vid_dec_PrivateType *priv, struct pipe_video_buffer *buf,
+                               OMX_BUFFERHEADERTYPE* output)
+{
+   omx_base_PortType *port = priv->ports[OMX_BASE_FILTER_OUTPUTPORT_INDEX];
+   OMX_VIDEO_PORTDEFINITIONTYPE *def = &port->sPortParam.format.video;
+
+   struct pipe_sampler_view **views;
+   struct pipe_transfer *transfer;
+   struct pipe_box box = { };
+
+   uint8_t *src, *dst;
+
+   views = buf->get_sampler_view_planes(buf);
+
+   dst = output->pBuffer;
+
+   box.width = def->nFrameWidth;
+   box.height = def->nFrameHeight;
+   box.depth = 1;
+
+   src = priv->pipe->transfer_map(priv->pipe, views[0]->texture, 0,
+                                  PIPE_TRANSFER_READ, &box, &transfer);
+   util_copy_rect(dst, views[0]->texture->format, def->nStride, 0, 0,
+                  box.width, box.height, src, transfer->stride, 0, 0);
+   pipe_transfer_unmap(priv->pipe, transfer);
+
+   dst = ((uint8_t*)output->pBuffer) + (def->nStride * box.height);
+
+   box.width = def->nFrameWidth / 2;
+   box.height = def->nFrameHeight / 2;
+ 
+   src = priv->pipe->transfer_map(priv->pipe, views[1]->texture, 0,
+                                  PIPE_TRANSFER_READ, &box, &transfer);
+   util_copy_rect(dst, views[1]->texture->format, def->nStride, 0, 0,
+                  box.width, box.height, src, transfer->stride, 0, 0);
+   pipe_transfer_unmap(priv->pipe, transfer);
+
+   output->nFilledLen = output->nAllocLen;
+}
+
+static void vid_dec_FrameDecoded(OMX_COMPONENTTYPE *comp, OMX_BUFFERHEADERTYPE* input,
+                                 OMX_BUFFERHEADERTYPE* output)
+{
+   vid_dec_PrivateType *priv = comp->pComponentPrivate;
+   bool eos = !!(input->nFlags & OMX_BUFFERFLAG_EOS);
+
+   if (!input->pInputPortPrivate)
+      input->pInputPortPrivate = priv->Flush(priv);
+
+   if (input->pInputPortPrivate)
+      vid_dec_FillOutput(priv, input->pInputPortPrivate, output);
+
+   if (eos && input->pInputPortPrivate)
+      vid_dec_FreeInputPortPrivate(input);
+   else
+      input->nFilledLen = 0;
+}