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Name	Size	Permission
decode_to_md5.c	3.91 KB	-rw-r--r--
decode_with_drops.c	4.3 KB	-rw-r--r--
postproc.c	4.49 KB	-rw-r--r--
resize_util.c	3.09 KB	-rw-r--r--
set_maps.c	7.26 KB	-rw-r--r--
simple_decoder.c	5.39 KB	-rw-r--r--
simple_encoder.c	8.95 KB	-rw-r--r--
svc_context.h	3.23 KB	-rw-r--r--
svc_encodeframe.c	22.09 KB	-rw-r--r--
twopass_encoder.c	8.15 KB	-rw-r--r--
vp8_multi_resolution_encoder.c	22.61 KB	-rw-r--r--
vp8cx_set_ref.c	5.81 KB	-rw-r--r--
vp9_lossless_encoder.c	4.14 KB	-rw-r--r--
vp9_spatial_svc_encoder.c	47.69 KB	-rw-r--r--
vp9cx_set_ref.c	9.68 KB	-rw-r--r--
vpx_dec_fuzzer.cc	3.52 KB	-rw-r--r--
vpx_temporal_svc_encoder.c	37.27 KB	-rw-r--r--

Code Editor : postproc.c

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

// Postprocessing Decoder
// ======================
//
// This example adds postprocessing to the simple decoder loop.
//
// Initializing Postprocessing
// ---------------------------
// You must inform the codec that you might request postprocessing at
// initialization time. This is done by passing the VPX_CODEC_USE_POSTPROC
// flag to `vpx_codec_dec_init`. If the codec does not support
// postprocessing, this call will return VPX_CODEC_INCAPABLE. For
// demonstration purposes, we also fall back to default initialization if
// the codec does not provide support.
//
// Using Adaptive Postprocessing
// -----------------------------
// VP6 provides "adaptive postprocessing." It will automatically select the
// best postprocessing filter on a frame by frame basis based on the amount
// of time remaining before the user's specified deadline expires. The
// special value 0 indicates that the codec should take as long as
// necessary to provide the best quality frame. This example gives the
// codec 15ms (15000us) to return a frame. Remember that this is a soft
// deadline, and the codec may exceed it doing its regular processing. In
// these cases, no additional postprocessing will be done.
//
// Codec Specific Postprocessing Controls
// --------------------------------------
// Some codecs provide fine grained controls over their built-in
// postprocessors. VP8 is one example. The following sample code toggles
// postprocessing on and off every 15 frames.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "vpx/vp8dx.h"
#include "vpx/vpx_decoder.h"

#include "../tools_common.h"
#include "../video_reader.h"
#include "./vpx_config.h"

static const char *exec_name;

void usage_exit(void) {
  fprintf(stderr, "Usage: %s <infile> <outfile>\n", exec_name);
  exit(EXIT_FAILURE);
}

int main(int argc, char **argv) {
  int frame_cnt = 0;
  FILE *outfile = NULL;
  vpx_codec_ctx_t codec;
  vpx_codec_err_t res;
  VpxVideoReader *reader = NULL;
  const VpxInterface *decoder = NULL;
  const VpxVideoInfo *info = NULL;

exec_name = argv[0];

if (argc != 3) die("Invalid number of arguments.");

reader = vpx_video_reader_open(argv[1]);
  if (!reader) die("Failed to open %s for reading.", argv[1]);

if (!(outfile = fopen(argv[2], "wb")))
    die("Failed to open %s for writing", argv[2]);

info = vpx_video_reader_get_info(reader);

decoder = get_vpx_decoder_by_fourcc(info->codec_fourcc);
  if (!decoder) die("Unknown input codec.");

printf("Using %s\n", vpx_codec_iface_name(decoder->codec_interface()));

res = vpx_codec_dec_init(&codec, decoder->codec_interface(), NULL,
                           VPX_CODEC_USE_POSTPROC);
  if (res == VPX_CODEC_INCAPABLE)
    die_codec(&codec, "Postproc not supported by this decoder.");

if (res) die_codec(&codec, "Failed to initialize decoder.");

while (vpx_video_reader_read_frame(reader)) {
    vpx_codec_iter_t iter = NULL;
    vpx_image_t *img = NULL;
    size_t frame_size = 0;
    const unsigned char *frame =
        vpx_video_reader_get_frame(reader, &frame_size);

++frame_cnt;

if (frame_cnt % 30 == 1) {
      vp8_postproc_cfg_t pp = { 0, 0, 0 };

if (vpx_codec_control(&codec, VP8_SET_POSTPROC, &pp))
        die_codec(&codec, "Failed to turn off postproc.");
    } else if (frame_cnt % 30 == 16) {
      vp8_postproc_cfg_t pp = { VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE, 4,
                                0 };
      if (vpx_codec_control(&codec, VP8_SET_POSTPROC, &pp))
        die_codec(&codec, "Failed to turn on postproc.");
    };

// Decode the frame with 15ms deadline
    if (vpx_codec_decode(&codec, frame, (unsigned int)frame_size, NULL, 15000))
      die_codec(&codec, "Failed to decode frame");

while ((img = vpx_codec_get_frame(&codec, &iter)) != NULL) {
      vpx_img_write(img, outfile);
    }
  }

printf("Processed %d frames.\n", frame_cnt);
  if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");

printf("Play: ffplay -f rawvideo -pix_fmt yuv420p -s %dx%d %s\n",
         info->frame_width, info->frame_height, argv[2]);

vpx_video_reader_close(reader);

fclose(outfile);
  return EXIT_SUCCESS;
}

${this.title}

Code Editor : postproc.c