Index: source/libvpx/examples/vp8_set_maps.c |
=================================================================== |
--- source/libvpx/examples/vp8_set_maps.c (revision 263011) |
+++ source/libvpx/examples/vp8_set_maps.c (working copy) |
@@ -1,240 +0,0 @@ |
-/* |
- * 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. |
- */ |
- |
- |
-// VP8 Set Active and ROI Maps |
-// =========================== |
-// |
-// This is an example demonstrating how to control the VP8 encoder's |
-// ROI and Active maps. |
-// |
-// ROI (Reigon of Interest) maps are a way for the application to assign |
-// each macroblock in the image to a region, and then set quantizer and |
-// filtering parameters on that image. |
-// |
-// Active maps are a way for the application to specify on a |
-// macroblock-by-macroblock basis whether there is any activity in that |
-// macroblock. |
-// |
-// |
-// Configuration |
-// ------------- |
-// An ROI map is set on frame 22. If the width of the image in macroblocks |
-// is evenly divisble by 4, then the output will appear to have distinct |
-// columns, where the quantizer, loopfilter, and static threshold differ |
-// from column to column. |
-// |
-// An active map is set on frame 33. If the width of the image in macroblocks |
-// is evenly divisble by 4, then the output will appear to have distinct |
-// columns, where one column will have motion and the next will not. |
-// |
-// The active map is cleared on frame 44. |
-// |
-// Observing The Effects |
-// --------------------- |
-// Use the `simple_decoder` example to decode this sample, and observe |
-// the change in the image at frames 22, 33, and 44. |
- |
-#include <stdio.h> |
-#include <stdlib.h> |
-#include <string.h> |
- |
-#define VPX_CODEC_DISABLE_COMPAT 1 |
-#include "vpx/vp8cx.h" |
-#include "vpx/vpx_encoder.h" |
- |
-#include "./tools_common.h" |
-#include "./video_writer.h" |
- |
-static const char *exec_name; |
- |
-void usage_exit() { |
- fprintf(stderr, "Usage: %s <width> <height> <infile> <outfile>\n", exec_name); |
- exit(EXIT_FAILURE); |
-} |
- |
-static void set_roi_map(const vpx_codec_enc_cfg_t *cfg, |
- vpx_codec_ctx_t *codec) { |
- unsigned int i; |
- vpx_roi_map_t roi = {0}; |
- |
- roi.rows = cfg->g_h / 16; |
- roi.cols = cfg->g_w / 16; |
- |
- roi.delta_q[0] = 0; |
- roi.delta_q[1] = -2; |
- roi.delta_q[2] = -4; |
- roi.delta_q[3] = -6; |
- |
- roi.delta_lf[0] = 0; |
- roi.delta_lf[1] = 1; |
- roi.delta_lf[2] = 2; |
- roi.delta_lf[3] = 3; |
- |
- roi.static_threshold[0] = 1500; |
- roi.static_threshold[1] = 1000; |
- roi.static_threshold[2] = 500; |
- roi.static_threshold[3] = 0; |
- |
- roi.roi_map = (uint8_t *)malloc(roi.rows * roi.cols); |
- for (i = 0; i < roi.rows * roi.cols; ++i) |
- roi.roi_map[i] = i % 4; |
- |
- if (vpx_codec_control(codec, VP8E_SET_ROI_MAP, &roi)) |
- die_codec(codec, "Failed to set ROI map"); |
- |
- free(roi.roi_map); |
-} |
- |
-static void set_active_map(const vpx_codec_enc_cfg_t *cfg, |
- vpx_codec_ctx_t *codec) { |
- unsigned int i; |
- vpx_active_map_t map = {0}; |
- |
- map.rows = cfg->g_h / 16; |
- map.cols = cfg->g_w / 16; |
- |
- map.active_map = (uint8_t *)malloc(map.rows * map.cols); |
- for (i = 0; i < map.rows * map.cols; ++i) |
- map.active_map[i] = i % 2; |
- |
- if (vpx_codec_control(codec, VP8E_SET_ACTIVEMAP, &map)) |
- die_codec(codec, "Failed to set active map"); |
- |
- free(map.active_map); |
-} |
- |
-static void unset_active_map(const vpx_codec_enc_cfg_t *cfg, |
- vpx_codec_ctx_t *codec) { |
- vpx_active_map_t map = {0}; |
- |
- map.rows = cfg->g_h / 16; |
- map.cols = cfg->g_w / 16; |
- map.active_map = NULL; |
- |
- if (vpx_codec_control(codec, VP8E_SET_ACTIVEMAP, &map)) |
- die_codec(codec, "Failed to set active map"); |
-} |
- |
-static void encode_frame(vpx_codec_ctx_t *codec, |
- vpx_image_t *img, |
- int frame_index, |
- VpxVideoWriter *writer) { |
- vpx_codec_iter_t iter = NULL; |
- const vpx_codec_cx_pkt_t *pkt = NULL; |
- const vpx_codec_err_t res = vpx_codec_encode(codec, img, frame_index, 1, 0, |
- VPX_DL_GOOD_QUALITY); |
- if (res != VPX_CODEC_OK) |
- die_codec(codec, "Failed to encode frame"); |
- |
- while ((pkt = vpx_codec_get_cx_data(codec, &iter)) != NULL) { |
- if (pkt->kind == VPX_CODEC_CX_FRAME_PKT) { |
- const int keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY) != 0; |
- if (!vpx_video_writer_write_frame(writer, |
- pkt->data.frame.buf, |
- pkt->data.frame.sz, |
- pkt->data.frame.pts)) { |
- die_codec(codec, "Failed to write compressed frame"); |
- } |
- |
- printf(keyframe ? "K" : "."); |
- fflush(stdout); |
- } |
- } |
-} |
- |
-int main(int argc, char **argv) { |
- FILE *infile = NULL; |
- vpx_codec_ctx_t codec = {0}; |
- vpx_codec_enc_cfg_t cfg = {0}; |
- int frame_count = 0; |
- vpx_image_t raw = {0}; |
- vpx_codec_err_t res; |
- VpxVideoInfo info = {0}; |
- VpxVideoWriter *writer = NULL; |
- const VpxInterface *encoder = NULL; |
- const int fps = 2; // TODO(dkovalev) add command line argument |
- const int bitrate = 200; // kbit/s TODO(dkovalev) add command line argument |
- |
- exec_name = argv[0]; |
- |
- if (argc != 5) |
- die("Invalid number of arguments"); |
- |
- encoder = get_vpx_encoder_by_name("vp8"); // only vp8 for now |
- if (!encoder) |
- die("Unsupported codec."); |
- |
- info.codec_fourcc = encoder->fourcc; |
- info.frame_width = strtol(argv[1], NULL, 0); |
- info.frame_height = strtol(argv[2], NULL, 0); |
- info.time_base.numerator = 1; |
- info.time_base.denominator = fps; |
- |
- if (info.frame_width <= 0 || |
- info.frame_height <= 0 || |
- (info.frame_width % 2) != 0 || |
- (info.frame_height % 2) != 0) { |
- die("Invalid frame size: %dx%d", info.frame_width, info.frame_height); |
- } |
- |
- if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, info.frame_width, |
- info.frame_height, 1)) { |
- die("Failed to allocate image."); |
- } |
- |
- printf("Using %s\n", vpx_codec_iface_name(encoder->interface())); |
- |
- res = vpx_codec_enc_config_default(encoder->interface(), &cfg, 0); |
- if (res) |
- die_codec(&codec, "Failed to get default codec config."); |
- |
- cfg.g_w = info.frame_width; |
- cfg.g_h = info.frame_height; |
- cfg.g_timebase.num = info.time_base.numerator; |
- cfg.g_timebase.den = info.time_base.denominator; |
- cfg.rc_target_bitrate = bitrate; |
- |
- writer = vpx_video_writer_open(argv[4], kContainerIVF, &info); |
- if (!writer) |
- die("Failed to open %s for writing.", argv[4]); |
- |
- if (!(infile = fopen(argv[3], "rb"))) |
- die("Failed to open %s for reading.", argv[3]); |
- |
- if (vpx_codec_enc_init(&codec, encoder->interface(), &cfg, 0)) |
- die_codec(&codec, "Failed to initialize encoder"); |
- |
- while (vpx_img_read(&raw, infile)) { |
- ++frame_count; |
- |
- if (frame_count == 22) { |
- set_roi_map(&cfg, &codec); |
- } else if (frame_count == 33) { |
- set_active_map(&cfg, &codec); |
- } else if (frame_count == 44) { |
- unset_active_map(&cfg, &codec); |
- } |
- |
- encode_frame(&codec, &raw, frame_count, writer); |
- } |
- encode_frame(&codec, NULL, -1, writer); |
- printf("\n"); |
- fclose(infile); |
- printf("Processed %d frames.\n", frame_count); |
- |
- vpx_img_free(&raw); |
- if (vpx_codec_destroy(&codec)) |
- die_codec(&codec, "Failed to destroy codec."); |
- |
- vpx_video_writer_close(writer); |
- |
- return EXIT_SUCCESS; |
-} |