Add VP9 support to the set maps example.
Change-Id: I8c3be3ed4d6bbc5fa3042a2d5637407d4d56afee
diff --git a/examples/set_maps.c b/examples/set_maps.c
new file mode 100644
index 0000000..4343832
--- /dev/null
+++ b/examples/set_maps.c
@@ -0,0 +1,243 @@
+/*
+ * 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 <codec> <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 + 15) / 16;
+ roi.cols = (cfg->g_w + 15) / 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 + 15) / 16;
+ map.cols = (cfg->g_w + 15) / 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 + 15) / 16;
+ map.cols = (cfg->g_w + 15) / 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 double bits_per_pixel_per_frame = 0.067;
+
+ exec_name = argv[0];
+
+ if (argc != 6)
+ die("Invalid number of arguments");
+
+ encoder = get_vpx_encoder_by_name(argv[1]);
+ if (!encoder)
+ die("Unsupported codec.");
+
+ info.codec_fourcc = encoder->fourcc;
+ info.frame_width = strtol(argv[2], NULL, 0);
+ info.frame_height = strtol(argv[3], 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 = (unsigned int)(bits_per_pixel_per_frame * cfg.g_w *
+ cfg.g_h * fps / 1000);
+ cfg.g_lag_in_frames = 0;
+
+ writer = vpx_video_writer_open(argv[5], kContainerIVF, &info);
+ if (!writer)
+ die("Failed to open %s for writing.", argv[5]);
+
+ if (!(infile = fopen(argv[4], "rb")))
+ die("Failed to open %s for reading.", argv[4]);
+
+ 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 && encoder->fourcc == VP8_FOURCC) {
+ 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;
+}
