Split ffmpeg interface into audio and video specific files

CVS patchset: 6087
CVS date: 2004/01/31 01:19:17

1 files changed, 1194 insertions, 0 deletions

diff --git a/src/libffmpeg/video_decoder.c b/src/libffmpeg/video_decoder.c
new file mode 100644
index 000000000..4533fada2
--- /dev/null
+++ b/src/libffmpeg/video_decoder.c
@@ -0,0 +1,1194 @@
+/*
+ * Copyright (C) 2001-2004 the xine project
+ * 
+ * This file is part of xine, a free video player.
+ * 
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * xine is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ *
+ * $Id: video_decoder.c,v 1.1 2004/01/31 01:19:17 jstembridge Exp $
+ *
+ * xine video decoder plugin using ffmpeg
+ *
+ */
+ 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <string.h>
+#include <pthread.h>
+#include <math.h>
+#include <assert.h>
+
+#define LOG_MODULE "ffmpeg_video_dec"
+#define LOG_VERBOSE
+/*
+#define LOG
+*/
+
+#include "xine_internal.h"
+#include "bswap.h"
+#include "buffer.h"
+#include "xineutils.h"
+#include "xine_decoder.h"
+
+#include "libavcodec/libpostproc/postprocess.h"
+
+#define VIDEOBUFSIZE        (128*1024)
+#define SLICE_BUFFER_SIZE   (1194*1024)
+#define RV10_CHUNK_TAB_SIZE 128
+
+#define ENABLE_DIRECT_RENDERING
+
+typedef struct ff_video_decoder_s ff_video_decoder_t;
+
+typedef struct ff_video_class_s {
+  video_decoder_class_t   decoder_class;
+
+  ff_video_decoder_t     *ip;
+  xine_t                 *xine;
+} ff_video_class_t;
+
+struct ff_video_decoder_s {
+  video_decoder_t   video_decoder;
+
+  ff_video_class_t *class;
+
+  xine_stream_t    *stream;
+  int               video_step;
+  int               decoder_ok;
+
+  xine_bmiheader    bih;
+  unsigned char     *buf;
+  int               bufsize;
+  int               size;
+  int               skipframes;
+
+  AVFrame           *av_frame;
+  AVCodecContext    *context;
+  AVCodec           *codec;
+  
+  int                pp_available;
+  int                pp_quality;
+  int                pp_quality_changed;
+  int                pp_flags;
+  pp_context_t      *pp_context;
+  pp_mode_t         *pp_mode;
+
+  /* mpeg sequence header parsing, stolen from libmpeg2 */
+
+  uint32_t          shift;
+  uint8_t          *chunk_buffer;
+  uint8_t          *chunk_ptr;
+  uint8_t           code;
+
+  int               is_continous;
+
+  double            aspect_ratio;
+  int               frame_flags;
+  
+  int               output_format;
+  yuv_planes_t      yuv;
+  AVPaletteControl  palette_control;
+};
+
+
+#ifdef ENABLE_DIRECT_RENDERING
+/* called from ffmpeg to do direct rendering method 1 */
+static int get_buffer(AVCodecContext *context, AVFrame *av_frame){
+  ff_video_decoder_t * this = (ff_video_decoder_t *)context->opaque;
+  vo_frame_t *img;
+  int align, width, height;
+        
+  align=15;
+    
+  width  = (context->width +align)&~align;
+  height = (context->height+align)&~align;
+
+  if( (this->context->pix_fmt != PIX_FMT_YUV420P) ||
+      (width != context->width) || (height != context->height) ) {
+    xprintf(this->stream->xine, XINE_VERBOSITY_LOG, 
+            _("ffmpeg_video_dec: unsupported frame format, DR1 disabled.\n"));
+
+    this->context->get_buffer = avcodec_default_get_buffer;
+    this->context->release_buffer = avcodec_default_release_buffer;
+    return avcodec_default_get_buffer(context, av_frame);
+  }
+
+  img = this->stream->video_out->get_frame (this->stream->video_out,
+                                            width,
+                                            height,
+                                            this->aspect_ratio, 
+                                            this->output_format,
+                                            VO_BOTH_FIELDS|this->frame_flags);
+
+  av_frame->opaque = img;
+
+  av_frame->data[0]= img->base[0];
+  av_frame->data[1]= img->base[1];
+  av_frame->data[2]= img->base[2];
+
+  av_frame->linesize[0] = img->pitches[0];
+  av_frame->linesize[1] = img->pitches[1];
+  av_frame->linesize[2] = img->pitches[2];
+
+  /* We should really keep track of the ages of xine frames (see
+   * avcodec_default_get_buffer in libavcodec/utils.c)
+   * For the moment tell ffmpeg that every frame is new (age = bignumber) */
+  av_frame->age = 256*256*256*64;
+
+  av_frame->type= FF_BUFFER_TYPE_USER;
+
+  return 0;
+}
+
+static void release_buffer(struct AVCodecContext *context, AVFrame *av_frame){
+  vo_frame_t *img = (vo_frame_t *)av_frame->opaque;
+    
+  assert(av_frame->type == FF_BUFFER_TYPE_USER);
+  assert(av_frame->opaque);  
+  
+  av_frame->data[0]= NULL;
+  av_frame->data[1]= NULL;
+  av_frame->data[2]= NULL;
+  
+  img->free(img);
+
+  av_frame->opaque = NULL;
+}
+#endif
+
+static void init_video_codec (ff_video_decoder_t *this, xine_bmiheader *bih) {
+
+  /* force (width % 8 == 0), otherwise there will be 
+   * display problems with Xv. 
+   */ 
+  this->bih.biWidth = (this->bih.biWidth + 1) & (~1);
+
+  this->context->width = this->bih.biWidth;
+  this->context->height = this->bih.biHeight;
+  this->context->stream_codec_tag = this->context->codec_tag = 
+    _x_stream_info_get(this->stream, XINE_STREAM_INFO_VIDEO_FOURCC);
+
+  /* some decoders (eg. dv) do not know the pix_fmt until they decode the
+   * first frame. setting to -1 avoid enabling DR1 for them.
+   */
+  this->context->pix_fmt = -1;
+
+  this->context->palctrl = &this->palette_control;
+
+  if( bih && bih->biSize > sizeof(xine_bmiheader) ) {
+    this->context->extradata_size = bih->biSize - sizeof(xine_bmiheader);
+    this->context->extradata = malloc(this->context->extradata_size);
+    memcpy( this->context->extradata, 
+            (uint8_t *)bih + sizeof(xine_bmiheader),
+            this->context->extradata_size ); 
+  }
+
+  if(bih)
+    this->context->bits_per_sample = bih->biBitCount;
+    
+  /* Some codecs (eg rv10) copy flags in init so it's necessary to set
+   * this flag here in case we are going to use direct rendering */
+  if(this->codec->capabilities & CODEC_CAP_DR1)
+    this->context->flags |= CODEC_FLAG_EMU_EDGE;
+
+  if (avcodec_open (this->context, this->codec) < 0) {
+    xprintf (this->stream->xine, XINE_VERBOSITY_LOG, 
+             _("ffmpeg_video_dec: couldn't open decoder\n"));
+    free(this->context);
+    this->context = NULL;
+    _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_HANDLED, 0);
+    return;
+  }
+
+  this->decoder_ok = 1;
+
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_WIDTH,    this->context->width);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_HEIGHT,   this->context->height);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_FRAME_DURATION, this->video_step);
+
+  this->stream->video_out->open (this->stream->video_out, this->stream);
+
+  if (this->buf)
+    free (this->buf);
+    
+  this->buf = xine_xmalloc (VIDEOBUFSIZE);
+  this->bufsize = VIDEOBUFSIZE;
+  
+  this->skipframes = 0;
+  
+  if((this->context->pix_fmt == PIX_FMT_RGBA32) ||
+     (this->context->pix_fmt == PIX_FMT_RGB565) ||
+     (this->context->pix_fmt == PIX_FMT_RGB555) ||
+     (this->context->pix_fmt == PIX_FMT_PAL8)) {
+    this->output_format = XINE_IMGFMT_YUY2;
+    init_yuv_planes(&this->yuv, this->context->width, this->context->height);
+  } else {
+    this->output_format = XINE_IMGFMT_YV12;
+#ifdef ENABLE_DIRECT_RENDERING
+    if( this->context->pix_fmt == PIX_FMT_YUV420P &&
+        this->codec->capabilities & CODEC_CAP_DR1 ) {
+      this->context->get_buffer = get_buffer;
+      this->context->release_buffer = release_buffer;
+      xprintf(this->stream->xine, XINE_VERBOSITY_LOG, 
+              _("ffmpeg_video_dec: direct rendering enabled\n"));
+    }
+#endif
+  }
+}
+
+static void pp_quality_cb(void *user_data, xine_cfg_entry_t *entry) {
+  ff_video_class_t   *class = (ff_video_class_t *) user_data;
+  
+  if(class->ip) {
+    ff_video_decoder_t *this  = class->ip;
+    
+    if(this->pp_available) {
+      this->pp_quality = entry->num_value;
+      this->pp_quality_changed = 1;
+    }
+  }
+}
+
+static void pp_change_quality (ff_video_decoder_t *this) {
+  if(this->pp_available && this->pp_quality) {
+    if(!this->pp_context)
+      this->pp_context = pp_get_context(this->context->width, this->context->height,
+                                        this->pp_flags);
+    if(this->pp_mode)
+      pp_free_mode(this->pp_mode);
+      
+    this->pp_mode = pp_get_mode_by_name_and_quality("hb:a,vb:a,dr:a", 
+                                                    this->pp_quality);
+  } else {
+    if(this->pp_mode) {
+      pp_free_mode(this->pp_mode);
+      this->pp_mode = NULL;
+    }
+    
+    if(this->pp_context) {
+      pp_free_context(this->pp_context);
+      this->pp_context = NULL;
+    }
+  }
+  
+  this->pp_quality_changed = 0;
+}
+
+static void init_postprocess (ff_video_decoder_t *this) {
+  uint32_t cpu_caps;
+  xine_cfg_entry_t quality_entry;
+
+  /* Read quality from config */
+  if(xine_config_lookup_entry(this->class->xine, "codec.ffmpeg_pp_quality",
+                              &quality_entry))
+    this->pp_quality = quality_entry.num_value;
+  else
+    this->pp_quality = 0;
+  
+  /* Allow post processing on mpeg-4 (based) codecs */
+  switch(this->codec->id) {
+    case CODEC_ID_MPEG4:
+    case CODEC_ID_MSMPEG4V1:
+    case CODEC_ID_MSMPEG4V2:
+    case CODEC_ID_MSMPEG4V3:
+    case CODEC_ID_WMV1:
+    case CODEC_ID_WMV2:
+      this->pp_available = 1;
+      break;
+    default:
+      this->pp_available = 0;
+      break;
+  }
+  
+  /* Detect what cpu accel we have */
+  cpu_caps = xine_mm_accel();
+  this->pp_flags = PP_FORMAT_420;
+ 
+  if(cpu_caps & MM_ACCEL_X86_MMX)
+    this->pp_flags |= PP_CPU_CAPS_MMX;
+    
+  if(cpu_caps & MM_ACCEL_X86_MMXEXT)
+    this->pp_flags |= PP_CPU_CAPS_MMX2;
+  
+  if(cpu_caps & MM_ACCEL_X86_3DNOW)  
+    this->pp_flags |= PP_CPU_CAPS_3DNOW;
+   
+  /* Set level */
+  pp_change_quality(this);    
+}
+
+static void find_sequence_header (ff_video_decoder_t *this,
+                                  uint8_t * current, uint8_t * end){
+
+  uint8_t code;
+
+  if (this->decoder_ok)
+    return;
+
+  while (current != end) {
+
+    uint32_t shift;
+    uint8_t *chunk_ptr;
+    uint8_t *limit;
+    uint8_t  byte;
+    
+    code = this->code;
+    
+    /* copy chunk */
+    
+    shift     = this->shift;
+    chunk_ptr = this->chunk_ptr;
+    limit     = current + (this->chunk_buffer + SLICE_BUFFER_SIZE - chunk_ptr);
+    if (limit > end)
+      limit = end;
+    
+    while (1) {
+      
+      byte = *current++;
+      if (shift != 0x00000100) {
+        shift = (shift | byte) << 8;
+        *chunk_ptr++ = byte;
+        if (current < limit)
+          continue;
+        if (current == end) {
+          this->chunk_ptr = chunk_ptr;
+          this->shift = shift;
+          current = 0;
+          break;
+        } else {
+          /* we filled the chunk buffer without finding a start code */
+          this->code = 0xb4;    /* sequence_error_code */
+          this->chunk_ptr = this->chunk_buffer;
+          break;
+        }
+      }
+      this->code = byte;
+      this->chunk_ptr = this->chunk_buffer;
+      this->shift = 0xffffff00;
+      break;
+    }
+
+    if (current == NULL)
+      return ;
+
+    lprintf ("looking for sequence header... %02x\n", code);
+  
+    /* mpeg2_stats (code, this->chunk_buffer); */
+    
+    if (code == 0xb3) { /* sequence_header_code */
+
+      int width, height, frame_rate_code;
+
+      lprintf ("found sequence header !\n");
+
+      height = (this->chunk_buffer[0] << 16) | (this->chunk_buffer[1] << 8) 
+        | this->chunk_buffer[2];
+
+      width = ((height >> 12) + 15) & ~15;
+      height = ((height & 0xfff) + 15) & ~15;
+
+      this->bih.biWidth  = width;
+      this->bih.biHeight = height;
+
+      frame_rate_code = this->chunk_buffer[3] & 15;
+
+      switch (frame_rate_code) {
+      case 1: /* 23.976 fps */
+        this->video_step      = 3754;  /* actually it's 3753.75 */
+        break;
+      case 2: /* 24 fps */
+        this->video_step      = 3750;
+        break;
+      case 3: /* 25 fps */
+        this->video_step      = 3600;
+        break;
+      case 4: /* 29.97 fps */
+        this->video_step      = 3003;
+        break;
+      case 5: /* 30 fps */
+        this->video_step      = 3000;
+        break;
+      case 6: /* 50 fps */
+        this->video_step      = 1800;
+        break;
+      case 7: /* 59.94 fps */
+        this->video_step      = 1502;  /* actually it's 1501.5 */
+        break;
+      case 8: /* 60 fps */
+        this->video_step      = 1500;
+        break;
+      default:
+        xprintf(this->stream->xine, XINE_VERBOSITY_LOG, 
+                _("ffmpeg_video_dec: invalid/unknown frame rate code: %d \n"),
+                frame_rate_code); 
+        this->video_step      = 0;
+      }
+
+      _x_meta_info_set(this->stream, XINE_META_INFO_VIDEOCODEC, 
+        "mpeg-1 (ffmpeg)");
+
+      /*
+       * init codec
+       */
+
+      this->codec = avcodec_find_decoder (CODEC_ID_MPEG1VIDEO); 
+      if (!this->codec) {
+        xprintf (this->stream->xine, XINE_VERBOSITY_LOG, 
+                 _("avcodec_find_decoder (CODEC_ID_MPEG1VIDEO) failed.\n"));
+        abort();
+      }
+
+      this->is_continous = 1;
+      init_video_codec (this, NULL);
+    }
+  }
+}
+
+static void ff_convert_frame(ff_video_decoder_t *this, vo_frame_t *img) {
+  int         y;
+  uint8_t    *dy, *du, *dv, *sy, *su, *sv;
+
+  dy = img->base[0];
+  du = img->base[1];
+  dv = img->base[2];
+  sy = this->av_frame->data[0];
+  su = this->av_frame->data[1];
+  sv = this->av_frame->data[2];
+
+  if (this->context->pix_fmt == PIX_FMT_YUV410P) {
+
+    yuv9_to_yv12(
+     /* Y */
+      this->av_frame->data[0],
+      this->av_frame->linesize[0],
+      img->base[0],
+      img->pitches[0],
+     /* U */
+      this->av_frame->data[1],
+      this->av_frame->linesize[1],
+      img->base[1],
+      img->pitches[1],
+     /* V */
+      this->av_frame->data[2],
+      this->av_frame->linesize[2],
+      img->base[2],
+      img->pitches[2],
+     /* width x height */
+      this->context->width,
+      this->context->height);
+
+  } else if (this->context->pix_fmt == PIX_FMT_YUV411P) {
+
+    yuv411_to_yv12(
+     /* Y */
+      this->av_frame->data[0],
+      this->av_frame->linesize[0],
+      img->base[0],
+      img->pitches[0],
+     /* U */
+      this->av_frame->data[1],
+      this->av_frame->linesize[1],
+      img->base[1],
+      img->pitches[1],
+     /* V */
+      this->av_frame->data[2],
+      this->av_frame->linesize[2],
+      img->base[2],
+      img->pitches[2],
+     /* width x height */
+      this->context->width,
+      this->context->height);
+
+  } else if (this->context->pix_fmt == PIX_FMT_RGBA32) {
+          
+    int x, plane_ptr = 0;
+    uint8_t *src;
+            
+    for(y = 0; y < this->context->height; y++) {
+      src = sy;
+      for(x = 0; x < this->context->width; x++) {
+        uint8_t r, g, b;
+              
+        /* These probably need to be switched for big endian */
+        b = *src; src++;
+        g = *src; src++;
+        r = *src; src += 2;
+
+        this->yuv.y[plane_ptr] = COMPUTE_Y(r, g, b);
+        this->yuv.u[plane_ptr] = COMPUTE_U(r, g, b);
+        this->yuv.v[plane_ptr] = COMPUTE_V(r, g, b);
+        plane_ptr++;
+      }
+      sy += this->av_frame->linesize[0];
+    }
+            
+    yuv444_to_yuy2(&this->yuv, img->base[0], img->pitches[0]);
+          
+  } else if (this->context->pix_fmt == PIX_FMT_RGB565) {
+
+    int x, plane_ptr = 0;
+    uint8_t *src;
+    uint16_t pixel16;
+
+    for(y = 0; y < this->context->height; y++) {
+      src = sy;
+      for(x = 0; x < this->context->width; x++) {
+        uint8_t r, g, b;
+              
+        /* a 16-bit RGB565 pixel is supposed to be stored in native-endian
+         * byte order; the following should be endian-safe */
+        pixel16 = *((uint16_t *)src);
+        src += 2;
+        b = (pixel16 << 3) & 0xFF;
+        g = (pixel16 >> 3) & 0xFF;
+        r = (pixel16 >> 8) & 0xFF;
+
+        this->yuv.y[plane_ptr] = COMPUTE_Y(r, g, b);
+        this->yuv.u[plane_ptr] = COMPUTE_U(r, g, b);
+        this->yuv.v[plane_ptr] = COMPUTE_V(r, g, b);
+        plane_ptr++;
+      }
+      sy += this->av_frame->linesize[0];
+    }
+            
+    yuv444_to_yuy2(&this->yuv, img->base[0], img->pitches[0]);
+          
+  } else if (this->context->pix_fmt == PIX_FMT_RGB555) {
+          
+    int x, plane_ptr = 0;
+    uint8_t *src;
+    uint16_t pixel16;
+            
+    for(y = 0; y < this->context->height; y++) {
+      src = sy;
+      for(x = 0; x < this->context->width; x++) {
+        uint8_t r, g, b;
+              
+        /* a 16-bit RGB555 pixel is supposed to be stored in native-endian
+         * byte order; the following should be endian-safe */
+        pixel16 = *((uint16_t *)src);
+        src += 2;
+        b = (pixel16 << 3) & 0xFF;
+        g = (pixel16 >> 2) & 0xFF;
+        r = (pixel16 >> 7) & 0xFF;
+
+        this->yuv.y[plane_ptr] = COMPUTE_Y(r, g, b);
+        this->yuv.u[plane_ptr] = COMPUTE_U(r, g, b);
+        this->yuv.v[plane_ptr] = COMPUTE_V(r, g, b);
+        plane_ptr++;
+      }
+      sy += this->av_frame->linesize[0];
+    }
+            
+    yuv444_to_yuy2(&this->yuv, img->base[0], img->pitches[0]);
+          
+  } else if (this->context->pix_fmt == PIX_FMT_PAL8) {
+          
+    int x, plane_ptr = 0;
+    uint8_t *src;
+    uint8_t pixel;
+    uint32_t *palette32 = (uint32_t *)su;  /* palette is in data[1] */
+    uint32_t rgb_color;
+    uint8_t r, g, b;
+    uint8_t y_palette[256];
+    uint8_t u_palette[256];
+    uint8_t v_palette[256];
+
+    for (x = 0; x < 256; x++) {
+      rgb_color = palette32[x];
+      b = rgb_color & 0xFF;
+      rgb_color >>= 8;
+      g = rgb_color & 0xFF;
+      rgb_color >>= 8;
+      r = rgb_color & 0xFF;
+      y_palette[x] = COMPUTE_Y(r, g, b);
+      u_palette[x] = COMPUTE_U(r, g, b);
+      v_palette[x] = COMPUTE_V(r, g, b);
+    }
+
+    for(y = 0; y < this->context->height; y++) {
+      src = sy;
+      for(x = 0; x < this->context->width; x++) {
+        pixel = *src++;
+
+        this->yuv.y[plane_ptr] = y_palette[pixel];
+        this->yuv.u[plane_ptr] = u_palette[pixel];
+        this->yuv.v[plane_ptr] = v_palette[pixel];
+        plane_ptr++;
+      }
+      sy += this->av_frame->linesize[0];
+    }
+            
+    yuv444_to_yuy2(&this->yuv, img->base[0], img->pitches[0]);
+          
+  } else {
+          
+    for (y=0; y<this->context->height; y++) {
+      xine_fast_memcpy (dy, sy, this->context->width);
+  
+      dy += img->pitches[0];
+  
+      sy += this->av_frame->linesize[0];
+    }
+
+    for (y=0; y<(this->context->height/2); y++) {
+      
+      if (this->context->pix_fmt != PIX_FMT_YUV444P) {
+        
+        xine_fast_memcpy (du, su, this->context->width/2);
+        xine_fast_memcpy (dv, sv, this->context->width/2);
+        
+      } else {
+        
+        int x;
+        uint8_t *src;
+        uint8_t *dst;
+      
+        /* subsample */
+        
+        src = su; dst = du;
+        for (x=0; x<(this->context->width/2); x++) {
+          *dst = *src;
+          dst++;
+          src += 2;
+        }
+        src = sv; dst = dv;
+        for (x=0; x<(this->context->width/2); x++) {
+          *dst = *src;
+          dst++;
+          src += 2;
+        }
+
+      }
+  
+      du += img->pitches[1];
+      dv += img->pitches[2];
+
+      if (this->context->pix_fmt != PIX_FMT_YUV420P) {
+        su += 2*this->av_frame->linesize[1];
+        sv += 2*this->av_frame->linesize[2];
+      } else {
+        su += this->av_frame->linesize[1];
+        sv += this->av_frame->linesize[2];
+      }
+    }
+  }
+}
+
+
+static const ff_codec_t ff_video_lookup[] = {
+  {BUF_VIDEO_MSMPEG4_V1,  CODEC_ID_MSMPEG4V1, "Microsoft MPEG-4 v1 (ffmpeg)"},
+  {BUF_VIDEO_MSMPEG4_V2,  CODEC_ID_MSMPEG4V2, "Microsoft MPEG-4 v2 (ffmpeg)"},
+  {BUF_VIDEO_MSMPEG4_V3,  CODEC_ID_MSMPEG4V3, "Microsoft MPEG-4 v3 (ffmpeg)"},
+  {BUF_VIDEO_WMV7,        CODEC_ID_WMV1,      "MS Windows Media Video 7 (ffmpeg)"},
+  {BUF_VIDEO_WMV8,        CODEC_ID_WMV2,      "MS Windows Media Video 8 (ffmpeg)"},
+  {BUF_VIDEO_MPEG4,       CODEC_ID_MPEG4,     "ISO MPEG-4 (ffmpeg)"},
+  {BUF_VIDEO_XVID,        CODEC_ID_MPEG4,     "ISO MPEG-4 (ffmpeg)"},
+  {BUF_VIDEO_DIVX5,       CODEC_ID_MPEG4,     "ISO MPEG-4 (ffmpeg)"},
+  {BUF_VIDEO_JPEG,        CODEC_ID_MJPEG,     "Motion JPEG (ffmpeg)"},
+  {BUF_VIDEO_MJPEG,       CODEC_ID_MJPEG,     "Motion JPEG (ffmpeg)"},
+  {BUF_VIDEO_I263,        CODEC_ID_H263I,     "ITU H.263 (ffmpeg)"},
+  {BUF_VIDEO_H263,        CODEC_ID_H263,      "H.263 (ffmpeg)"},
+  {BUF_VIDEO_IV31,        CODEC_ID_INDEO3,    "Indeo Video 3.1 (ffmpeg)"},
+  {BUF_VIDEO_IV32,        CODEC_ID_INDEO3,    "Indeo Video 3.2 (ffmpeg)"},
+  {BUF_VIDEO_SORENSON_V1, CODEC_ID_SVQ1,      "Sorenson Video 1 (ffmpeg)"},
+  {BUF_VIDEO_SORENSON_V3, CODEC_ID_SVQ3,      "Sorenson Video 3 (ffmpeg)"},
+  {BUF_VIDEO_DV,          CODEC_ID_DVVIDEO,   "DV (ffmpeg)"},
+  {BUF_VIDEO_HUFFYUV,     CODEC_ID_HUFFYUV,   "HuffYUV (ffmpeg)"},
+  {BUF_VIDEO_VP31,        CODEC_ID_VP3,       "On2 VP3.1 (ffmpeg)"},
+  {BUF_VIDEO_4XM,         CODEC_ID_4XM,       "4X Video (ffmpeg)"},
+  {BUF_VIDEO_CINEPAK,     CODEC_ID_CINEPAK,   "Cinepak (ffmpeg)"},
+  {BUF_VIDEO_MSVC,        CODEC_ID_MSVIDEO1,  "Microsoft Video 1 (ffmpeg)"},
+  {BUF_VIDEO_MSRLE,       CODEC_ID_MSRLE,     "Microsoft RLE (ffmpeg)"},
+  {BUF_VIDEO_RPZA,        CODEC_ID_RPZA,      "Apple Quicktime Video/RPZA (ffmpeg)"},
+  {BUF_VIDEO_CYUV,        CODEC_ID_CYUV,      "Creative YUV (ffmpeg)"},
+  {BUF_VIDEO_ROQ,         CODEC_ID_ROQ,       "Id Software RoQ (ffmpeg)"},
+  {BUF_VIDEO_IDCIN,       CODEC_ID_IDCIN,     "Id Software CIN (ffmpeg)"},
+  {BUF_VIDEO_WC3,         CODEC_ID_XAN_WC3,   "Xan (ffmpeg)"},
+  {BUF_VIDEO_VQA,         CODEC_ID_WS_VQA,    "Westwood Studios VQA (ffmpeg)"},
+  {BUF_VIDEO_INTERPLAY,   CODEC_ID_INTERPLAY_VIDEO, "Interplay MVE (ffmpeg)"} };
+
+static void ff_decode_data (video_decoder_t *this_gen, buf_element_t *buf) {
+  ff_video_decoder_t *this = (ff_video_decoder_t *) this_gen;
+  int i, codec_type;
+
+  lprintf ("processing packet type = %08x, buf : %p, buf->decoder_flags=%08x\n", 
+           buf->type, buf, buf->decoder_flags);
+
+  codec_type = buf->type & 0xFFFF0000;
+
+  if (buf->decoder_flags & BUF_FLAG_PREVIEW) {
+
+    lprintf ("preview\n");
+
+    if ( (buf->type & 0xFFFF0000) == BUF_VIDEO_MPEG ) {
+      find_sequence_header (this, buf->content, buf->content+buf->size);
+    }
+    return;
+  }
+
+  if (buf->decoder_flags & BUF_FLAG_STDHEADER) {
+
+    lprintf ("standard header\n");
+
+    /* init package containing bih */
+    memcpy ( &this->bih, buf->content, sizeof (xine_bmiheader));
+    this->video_step = buf->decoder_info[1];
+
+    /* init codec */
+    this->codec = NULL;
+
+    for(i = 0; i < sizeof(ff_video_lookup)/sizeof(ff_codec_t); i++)
+      if(ff_video_lookup[i].type == codec_type) {
+        this->codec = avcodec_find_decoder(ff_video_lookup[i].id);
+        _x_meta_info_set(this->stream, XINE_META_INFO_VIDEOCODEC,
+                         ff_video_lookup[i].name);
+        break;
+      }
+
+    if (!this->codec) {
+      xprintf (this->stream->xine, XINE_VERBOSITY_LOG, 
+               _("ffmpeg_video_dec: couldn't find/open ffmpeg decoder for buf type 0x%X\n"),
+               codec_type);
+      return;
+    }
+
+    init_video_codec (this, (xine_bmiheader *)buf->content );
+    init_postprocess (this);
+
+  } else if (buf->decoder_flags & BUF_FLAG_HEADER) {
+  
+    lprintf("header\n");
+    
+    switch(codec_type) {
+      case BUF_VIDEO_RV10:
+        this->codec = avcodec_find_decoder(CODEC_ID_RV10);
+        _x_meta_info_set(this->stream, XINE_META_INFO_VIDEOCODEC,
+                         "Real Video 1.0 (ffmpeg)");
+
+        this->bih.biWidth  = BE_16(&buf->content[12]);
+        this->bih.biHeight = BE_16(&buf->content[14]);
+        
+        this->video_step =  
+          90000.0 / ((double) BE_16(&buf->content[22]) + 
+                     ((double) BE_16(&buf->content[24]) / 65536.0));
+
+        this->context->sub_id = BE_32(&buf->content[30]);
+        this->context->slice_offset = xine_xmalloc(sizeof(int)*RV10_CHUNK_TAB_SIZE);
+        break;
+      default:
+        xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG,
+                "ffmpeg_video_dec: unknown header for buf type 0x%X\n", codec_type);
+        return;
+    }
+    
+    if(!this->codec) {
+      xprintf(this->stream->xine, XINE_VERBOSITY_LOG, 
+              _("ffmpeg_video_dec: couldn't open ffmpeg decoder for buf type 0x%X\n"),
+              codec_type);
+      return;
+    }
+
+    init_video_codec(this, NULL);
+    init_postprocess(this);
+    
+  } else if (buf->decoder_flags & BUF_FLAG_SPECIAL) {
+
+    /* take care of all the various types of special buffers */
+
+    if (buf->decoder_info[1] == BUF_SPECIAL_STSD_ATOM) {
+
+      this->context->extradata_size = buf->decoder_info[2];
+      this->context->extradata = xine_xmalloc(buf->decoder_info[2]);
+      memcpy(this->context->extradata, buf->decoder_info_ptr[2],
+        buf->decoder_info[2]);
+
+    } else if (buf->decoder_info[1] == BUF_SPECIAL_PALETTE) {
+
+      palette_entry_t *demuxer_palette;
+      AVPaletteControl *decoder_palette;
+      
+      decoder_palette = (AVPaletteControl *)this->context->palctrl;
+      demuxer_palette = (palette_entry_t *)buf->decoder_info_ptr[2];
+
+      for (i = 0; i < buf->decoder_info[2]; i++) {
+        decoder_palette->palette[i] = 
+          (demuxer_palette[i].r << 16) |
+          (demuxer_palette[i].g <<  8) |
+          (demuxer_palette[i].b <<  0);
+      }
+      decoder_palette->palette_changed = 1;
+
+    } else if (buf->decoder_info[1] == BUF_SPECIAL_RV_CHUNK_TABLE) {
+    
+      /* FIXME: Check bounds of this->context->slice_offset */
+      this->context->slice_count = buf->decoder_info[2]+1;
+      for(i = 0; i < this->context->slice_count; i++)
+        this->context->slice_offset[i] = 
+          ((uint32_t *) buf->decoder_info_ptr[2])[(2*i)+1];
+    
+    }
+
+  } else {
+  
+    if( this->size + buf->size > this->bufsize ) {
+      this->bufsize = this->size + 2 * buf->size;
+      xprintf(this->stream->xine, XINE_VERBOSITY_LOG, 
+              _("ffmpeg_video_dec: increasing buffer to %d to avoid overflow.\n"), 
+              this->bufsize);
+      this->buf = realloc( this->buf, this->bufsize );
+    }
+
+    xine_fast_memcpy (&this->buf[this->size], buf->content, buf->size);
+    this->size += buf->size;
+
+  }
+   
+  if (buf->decoder_flags & BUF_FLAG_FRAMERATE)
+    this->video_step = buf->decoder_info[0];
+  
+  if (this->decoder_ok && this->size) {
+  
+    if ( (buf->decoder_flags & BUF_FLAG_FRAME_END) || this->is_continous ) {
+
+      vo_frame_t *img;
+      int         free_img;
+      int         got_picture, len;
+      int         offset;
+
+      /* decode video frame(s) */
+
+
+      /* flag for interlaced streams */
+      this->frame_flags = 0;
+      /* FIXME: which codecs can be interlaced?
+         FIXME: check interlaced DCT and other codec specific info. */
+      switch( codec_type ) {
+        case BUF_VIDEO_DV:
+          this->frame_flags |= VO_INTERLACED_FLAG;
+          break;
+        case BUF_VIDEO_MPEG:
+          this->frame_flags |= VO_INTERLACED_FLAG;
+          break;
+        case BUF_VIDEO_MJPEG:
+          this->frame_flags |= VO_INTERLACED_FLAG;
+          break;
+        case BUF_VIDEO_HUFFYUV:
+          this->frame_flags |= VO_INTERLACED_FLAG;
+          break;
+      }
+
+      /* skip decoding b frames if too late */
+      this->context->hurry_up = (this->skipframes > 2) ? 1:0;
+
+      offset = 0;
+      while (this->size>0) {
+        
+        /* DV frames can be completely skipped */
+        if( codec_type == BUF_VIDEO_DV && this->skipframes ) {
+          len = this->size;
+          got_picture = 1;
+        } else
+          len = avcodec_decode_video (this->context, this->av_frame,
+                                      &got_picture, &this->buf[offset],
+                                      this->size);
+        if (len<0) {
+          xprintf (this->stream->xine, XINE_VERBOSITY_DEBUG, 
+                   "ffmpeg_video_dec: error decompressing frame\n");
+          this->size=0;
+          return;
+        }
+
+        this->size -= len;
+        offset += len;
+
+        if (!got_picture || !this->av_frame->data[0]) {
+          xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, 
+                  "ffmpeg_video_dec: didn't get a picture, %d bytes left\n", 
+                  this->size);
+
+          if (this->size>0)
+            memmove (this->buf, &this->buf[offset], this->size);
+
+          return;
+        }
+
+        lprintf ("got a picture\n");
+
+        this->aspect_ratio = av_q2d(this->context->sample_aspect_ratio) * 
+            (double) this->context->width / (double) this->context->height;
+
+        if(!this->av_frame->opaque) {
+          img = this->stream->video_out->get_frame (this->stream->video_out,
+                                                    this->context->width,
+                                                    this->context->height,
+                                                    this->aspect_ratio, 
+                                                    this->output_format,
+                                                    VO_BOTH_FIELDS|this->frame_flags);
+          free_img = 1;
+        } else {
+          img = (vo_frame_t*) this->av_frame->opaque;
+          free_img = 0;
+        }
+
+        if (len<0 || this->skipframes) {
+          if( !this->skipframes )
+            xprintf (this->stream->xine, XINE_VERBOSITY_DEBUG, 
+                     "ffmpeg_video_dec: error decompressing frame\n");
+          img->bad_frame = 1;
+        } else {
+          img->bad_frame = 0;
+
+          if(this->pp_quality_changed)
+            pp_change_quality(this);
+
+          if(this->pp_available && this->pp_quality) {
+
+            if(this->av_frame->opaque) {
+              img = this->stream->video_out->get_frame (this->stream->video_out,
+                                                        img->width,
+                                                        img->height,
+                                                        this->aspect_ratio, 
+                                                        this->output_format,
+                                                        VO_BOTH_FIELDS|this->frame_flags);
+              free_img = 1;
+              img->bad_frame = 0;
+            }
+
+            pp_postprocess(this->av_frame->data, this->av_frame->linesize, 
+                           img->base, img->pitches, 
+                           img->width, img->height,
+                           this->av_frame->qscale_table, this->av_frame->qstride,
+                           this->pp_mode, this->pp_context, 
+                           this->av_frame->pict_type);
+
+          } else if(!this->av_frame->opaque) {
+            ff_convert_frame(this, img);
+          }
+        }
+      
+        img->pts      = buf->pts;
+        buf->pts      = 0;
+        img->duration = this->video_step;
+
+        this->skipframes = img->draw(img, this->stream);
+        if( this->skipframes < 0 )
+          this->skipframes = 0;
+
+        if(free_img)
+          img->free(img);
+      }
+    }
+
+  }
+}
+
+static void ff_flush (video_decoder_t *this_gen) {
+  lprintf ("ff_flush\n");
+}
+
+static void ff_reset (video_decoder_t *this_gen) {
+  ff_video_decoder_t *this = (ff_video_decoder_t *) this_gen;
+
+  lprintf ("ff_reset\n");
+
+  this->size = 0;
+  if(this->context)
+    avcodec_flush_buffers(this->context);
+}
+
+static void ff_discontinuity (video_decoder_t *this_gen) {
+  
+  lprintf ("ff_discontinuity\n");
+}
+
+static void ff_dispose (video_decoder_t *this_gen) {
+  ff_video_decoder_t *this = (ff_video_decoder_t *) this_gen;
+
+  lprintf ("ff_dispose\n");
+
+  if (this->decoder_ok) {
+    avcodec_close (this->context);
+
+    this->stream->video_out->close(this->stream->video_out, this->stream);
+    this->decoder_ok = 0;
+  }
+
+  if(this->context && this->context->slice_offset)
+    free(this->context->slice_offset);
+
+  if(this->context && this->context->extradata)
+    free(this->context->extradata);
+
+  if((this->context) && 
+   ((this->context->pix_fmt == PIX_FMT_RGBA32) ||
+    (this->context->pix_fmt == PIX_FMT_RGB565) ||
+    (this->context->pix_fmt == PIX_FMT_RGB555) ||
+    (this->context->pix_fmt == PIX_FMT_PAL8)))
+    free_yuv_planes(&this->yuv);
+  
+  if( this->context )
+    free( this->context );
+
+  if( this->av_frame )
+    free( this->av_frame );
+  
+  if (this->buf)
+    free(this->buf);
+  this->buf = NULL;
+  
+  if(this->pp_context)
+    pp_free_context(this->pp_context);
+    
+  if(this->pp_mode)
+    pp_free_mode(this->pp_mode);
+  
+  free (this->chunk_buffer);
+  free (this_gen);
+}
+
+static video_decoder_t *ff_video_open_plugin (video_decoder_class_t *class_gen, xine_stream_t *stream) {
+
+  ff_video_decoder_t  *this ;
+
+  lprintf ("open_plugin\n");
+
+  this = (ff_video_decoder_t *) xine_xmalloc (sizeof (ff_video_decoder_t));
+
+  this->video_decoder.decode_data         = ff_decode_data;
+  this->video_decoder.flush               = ff_flush;
+  this->video_decoder.reset               = ff_reset;
+  this->video_decoder.discontinuity       = ff_discontinuity;
+  this->video_decoder.dispose             = ff_dispose;
+  this->size                              = 0;
+
+  this->stream                            = stream;
+  this->class                             = (ff_video_class_t *) class_gen;
+  this->class->ip                         = this;
+
+  this->av_frame        = avcodec_alloc_frame();
+  this->context         = avcodec_alloc_context();
+  this->context->opaque = this;
+  
+  this->chunk_buffer = xine_xmalloc (SLICE_BUFFER_SIZE + 4);
+
+  this->decoder_ok    = 0;
+  this->buf           = NULL;
+
+  this->shift         = 0xffffff00;
+  this->code          = 0xb4;
+  this->chunk_ptr     = this->chunk_buffer;
+
+  this->is_continous  = 0;
+  this->aspect_ratio = 0;
+
+  this->pp_quality  = 0;
+  this->pp_context  = NULL;
+  this->pp_mode     = NULL;
+
+  return &this->video_decoder;
+}
+
+static char *ff_video_get_identifier (video_decoder_class_t *this) {
+  return "ffmpeg video";
+}
+
+static char *ff_video_get_description (video_decoder_class_t *this) {
+  return "ffmpeg based video decoder plugin";
+}
+
+static void ff_video_dispose_class (video_decoder_class_t *this) {
+  free (this);
+}
+
+void *init_video_plugin (xine_t *xine, void *data) {
+
+  ff_video_class_t *this;
+  config_values_t  *config;
+  
+  this = (ff_video_class_t *) xine_xmalloc (sizeof (ff_video_class_t));
+
+  this->decoder_class.open_plugin     = ff_video_open_plugin;
+  this->decoder_class.get_identifier  = ff_video_get_identifier;
+  this->decoder_class.get_description = ff_video_get_description;
+  this->decoder_class.dispose         = ff_video_dispose_class;
+  this->ip                            = NULL;
+  this->xine                          = xine;
+
+  pthread_once( &once_control, init_once_routine );
+  
+  /* Configuration for post processing quality - default to mid (3) for the
+   * moment */
+  config = xine->config;
+  xine->config->register_range(config, "codec.ffmpeg_pp_quality", 3, 
+    0, PP_QUALITY_MAX,  _("ffmpeg mpeg-4 postprocessing quality"), NULL,
+    10, pp_quality_cb, this);  
+  
+  return this;
+}
+
+static uint32_t supported_video_types[] = { 
+  BUF_VIDEO_MSMPEG4_V1, 
+  BUF_VIDEO_MSMPEG4_V2,
+  BUF_VIDEO_MSMPEG4_V3, 
+  BUF_VIDEO_WMV7, 
+  BUF_VIDEO_MPEG4,
+  BUF_VIDEO_XVID, 
+  BUF_VIDEO_DIVX5, 
+  BUF_VIDEO_MJPEG,
+  BUF_VIDEO_H263,
+  BUF_VIDEO_RV10,
+  BUF_VIDEO_IV31,
+  BUF_VIDEO_IV32,
+  BUF_VIDEO_SORENSON_V1,
+  BUF_VIDEO_SORENSON_V3,
+  BUF_VIDEO_JPEG, 
+  BUF_VIDEO_MPEG, 
+  BUF_VIDEO_DV,
+  BUF_VIDEO_HUFFYUV,
+  BUF_VIDEO_VP31,
+  BUF_VIDEO_4XM,
+  BUF_VIDEO_CINEPAK,
+  BUF_VIDEO_MSVC,
+  BUF_VIDEO_MSRLE,
+  BUF_VIDEO_RPZA,
+  BUF_VIDEO_CYUV,
+  BUF_VIDEO_ROQ,
+  BUF_VIDEO_IDCIN,
+  BUF_VIDEO_WC3,
+  BUF_VIDEO_VQA,
+  BUF_VIDEO_INTERPLAY,
+  0 
+};
+
+static uint32_t wmv8_video_types[] = { 
+  BUF_VIDEO_WMV8,
+  0 
+};
+
+decoder_info_t dec_info_ffmpeg_video = {
+  supported_video_types,   /* supported types */
+  5                        /* priority        */
+};
+
+decoder_info_t dec_info_ffmpeg_wmv8 = {
+  wmv8_video_types,        /* supported types */
+  0                        /* priority        */
+};