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diff --git a/third_party/aom/examples/lightfield_encoder.c b/third_party/aom/examples/lightfield_encoder.c
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+/*
+ * Copyright (c) 2017, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+// Lightfield Encoder
+// ==================
+//
+// This is an example of a simple lightfield encoder. It builds upon the
+// twopass_encoder.c example. It takes an input file in YV12 format,
+// treating it as a planar lightfield instead of a video. The img_width
+// and img_height arguments are the dimensions of the lightfield images,
+// while the lf_width and lf_height arguments are the number of
+// lightfield images in each dimension. The lf_blocksize determines the
+// number of reference images used for MCP. For example, 5 means that there
+// is a reference image for every 5x5 lightfield image block. All images
+// within a block will use the center image in that block as the reference
+// image for MCP.
+// Run "make test" to download lightfield test data: vase10x10.yuv.
+// Run lightfield encoder to encode whole lightfield:
+// examples/lightfield_encoder 1024 1024 vase10x10.yuv vase10x10.ivf 10 10 5
+
+// Note: In bitstream.c and encoder.c, define EXT_TILE_DEBUG as 1 will print
+// out the uncompressed header and the frame contexts, which can be used to
+// test the bit exactness of the headers and the frame contexts for large scale
+// tile coded frames.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "aom/aom_encoder.h"
+#include "aom/aomcx.h"
+#include "aom_scale/yv12config.h"
+#include "av1/common/enums.h"
+#include "common/tools_common.h"
+#include "common/video_writer.h"
+
+static const char *exec_name;
+
+void usage_exit(void) {
+ fprintf(stderr,
+ "Usage: %s <img_width> <img_height> <infile> <outfile> "
+ "<lf_width> <lf_height> <lf_blocksize>\n",
+ exec_name);
+ exit(EXIT_FAILURE);
+}
+
+static int aom_img_size_bytes(aom_image_t *img) {
+ int image_size_bytes = 0;
+ int plane;
+ for (plane = 0; plane < 3; ++plane) {
+ const int w = aom_img_plane_width(img, plane) *
+ ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
+ const int h = aom_img_plane_height(img, plane);
+ image_size_bytes += w * h;
+ }
+ return image_size_bytes;
+}
+
+static int get_frame_stats(aom_codec_ctx_t *ctx, const aom_image_t *img,
+ aom_codec_pts_t pts, unsigned int duration,
+ aom_enc_frame_flags_t flags,
+ aom_fixed_buf_t *stats) {
+ int got_pkts = 0;
+ aom_codec_iter_t iter = NULL;
+ const aom_codec_cx_pkt_t *pkt = NULL;
+ const aom_codec_err_t res = aom_codec_encode(ctx, img, pts, duration, flags);
+ if (res != AOM_CODEC_OK) die_codec(ctx, "Failed to get frame stats.");
+
+ while ((pkt = aom_codec_get_cx_data(ctx, &iter)) != NULL) {
+ got_pkts = 1;
+
+ if (pkt->kind == AOM_CODEC_STATS_PKT) {
+ const uint8_t *const pkt_buf = pkt->data.twopass_stats.buf;
+ const size_t pkt_size = pkt->data.twopass_stats.sz;
+ stats->buf = realloc(stats->buf, stats->sz + pkt_size);
+ memcpy((uint8_t *)stats->buf + stats->sz, pkt_buf, pkt_size);
+ stats->sz += pkt_size;
+ }
+ }
+
+ return got_pkts;
+}
+
+static int encode_frame(aom_codec_ctx_t *ctx, const aom_image_t *img,
+ aom_codec_pts_t pts, unsigned int duration,
+ aom_enc_frame_flags_t flags, AvxVideoWriter *writer) {
+ int got_pkts = 0;
+ aom_codec_iter_t iter = NULL;
+ const aom_codec_cx_pkt_t *pkt = NULL;
+ const aom_codec_err_t res = aom_codec_encode(ctx, img, pts, duration, flags);
+ if (res != AOM_CODEC_OK) die_codec(ctx, "Failed to encode frame.");
+
+ while ((pkt = aom_codec_get_cx_data(ctx, &iter)) != NULL) {
+ got_pkts = 1;
+ if (pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
+ const int keyframe = (pkt->data.frame.flags & AOM_FRAME_IS_KEY) != 0;
+
+ if (!aom_video_writer_write_frame(writer, pkt->data.frame.buf,
+ pkt->data.frame.sz,
+ pkt->data.frame.pts))
+ die_codec(ctx, "Failed to write compressed frame.");
+ printf(keyframe ? "K" : ".");
+ fflush(stdout);
+ }
+ }
+
+ return got_pkts;
+}
+
+static void get_raw_image(aom_image_t **frame_to_encode, aom_image_t *raw,
+ aom_image_t *raw_shift) {
+ if (!CONFIG_LOWBITDEPTH) {
+ // Need to allocate larger buffer to use hbd internal.
+ int input_shift = 0;
+ aom_img_upshift(raw_shift, raw, input_shift);
+ *frame_to_encode = raw_shift;
+ } else {
+ *frame_to_encode = raw;
+ }
+}
+
+static aom_fixed_buf_t pass0(aom_image_t *raw, FILE *infile,
+ const AvxInterface *encoder,
+ const aom_codec_enc_cfg_t *cfg, int lf_width,
+ int lf_height, int lf_blocksize, int flags,
+ aom_image_t *raw_shift) {
+ aom_codec_ctx_t codec;
+ int frame_count = 0;
+ int image_size_bytes = aom_img_size_bytes(raw);
+ int u_blocks, v_blocks;
+ int bu, bv;
+ aom_fixed_buf_t stats = { NULL, 0 };
+ aom_image_t *frame_to_encode;
+
+ if (aom_codec_enc_init(&codec, encoder->codec_interface(), cfg, flags))
+ die_codec(&codec, "Failed to initialize encoder");
+ if (aom_codec_control(&codec, AOME_SET_ENABLEAUTOALTREF, 0))
+ die_codec(&codec, "Failed to turn off auto altref");
+ if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 0))
+ die_codec(&codec, "Failed to set frame parallel decoding");
+
+ // How many reference images we need to encode.
+ u_blocks = (lf_width + lf_blocksize - 1) / lf_blocksize;
+ v_blocks = (lf_height + lf_blocksize - 1) / lf_blocksize;
+
+ printf("\n First pass: ");
+
+ for (bv = 0; bv < v_blocks; ++bv) {
+ for (bu = 0; bu < u_blocks; ++bu) {
+ const int block_u_min = bu * lf_blocksize;
+ const int block_v_min = bv * lf_blocksize;
+ int block_u_end = (bu + 1) * lf_blocksize;
+ int block_v_end = (bv + 1) * lf_blocksize;
+ int u_block_size, v_block_size;
+ int block_ref_u, block_ref_v;
+
+ block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+ block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+ u_block_size = block_u_end - block_u_min;
+ v_block_size = block_v_end - block_v_min;
+ block_ref_u = block_u_min + u_block_size / 2;
+ block_ref_v = block_v_min + v_block_size / 2;
+
+ printf("A%d, ", (block_ref_u + block_ref_v * lf_width));
+ fseek(infile, (block_ref_u + block_ref_v * lf_width) * image_size_bytes,
+ SEEK_SET);
+ aom_img_read(raw, infile);
+ get_raw_image(&frame_to_encode, raw, raw_shift);
+
+ // Reference frames can be encoded encoded without tiles.
+ ++frame_count;
+ get_frame_stats(&codec, frame_to_encode, frame_count, 1,
+ AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+ AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+ AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+ AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+ AOM_EFLAG_NO_UPD_ARF,
+ &stats);
+ }
+ }
+
+ if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 1))
+ die_codec(&codec, "Failed to set frame parallel decoding");
+
+ for (bv = 0; bv < v_blocks; ++bv) {
+ for (bu = 0; bu < u_blocks; ++bu) {
+ const int block_u_min = bu * lf_blocksize;
+ const int block_v_min = bv * lf_blocksize;
+ int block_u_end = (bu + 1) * lf_blocksize;
+ int block_v_end = (bv + 1) * lf_blocksize;
+ int u, v;
+ block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+ block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+ for (v = block_v_min; v < block_v_end; ++v) {
+ for (u = block_u_min; u < block_u_end; ++u) {
+ printf("C%d, ", (u + v * lf_width));
+ fseek(infile, (u + v * lf_width) * image_size_bytes, SEEK_SET);
+ aom_img_read(raw, infile);
+ get_raw_image(&frame_to_encode, raw, raw_shift);
+
+ ++frame_count;
+ get_frame_stats(&codec, frame_to_encode, frame_count, 1,
+ AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+ AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+ AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+ AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+ AOM_EFLAG_NO_UPD_ARF | AOM_EFLAG_NO_UPD_ENTROPY,
+ &stats);
+ }
+ }
+ }
+ }
+ // Flush encoder.
+ // No ARF, this should not be needed.
+ while (get_frame_stats(&codec, NULL, frame_count, 1, 0, &stats)) {
+ }
+
+ if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
+
+ printf("\nFirst pass complete. Processed %d frames.\n", frame_count);
+
+ return stats;
+}
+
+static void pass1(aom_image_t *raw, FILE *infile, const char *outfile_name,
+ const AvxInterface *encoder, aom_codec_enc_cfg_t *cfg,
+ int lf_width, int lf_height, int lf_blocksize, int flags,
+ aom_image_t *raw_shift) {
+ AvxVideoInfo info = { encoder->fourcc,
+ cfg->g_w,
+ cfg->g_h,
+ { cfg->g_timebase.num, cfg->g_timebase.den },
+ 0 };
+ AvxVideoWriter *writer = NULL;
+ aom_codec_ctx_t codec;
+ int frame_count = 0;
+ int image_size_bytes = aom_img_size_bytes(raw);
+ int bu, bv;
+ int u_blocks, v_blocks;
+ aom_image_t *frame_to_encode;
+ aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
+ int reference_image_num = 0;
+ int i;
+
+ writer = aom_video_writer_open(outfile_name, kContainerIVF, &info);
+ if (!writer) die("Failed to open %s for writing", outfile_name);
+
+ if (aom_codec_enc_init(&codec, encoder->codec_interface(), cfg, flags))
+ die_codec(&codec, "Failed to initialize encoder");
+ if (aom_codec_control(&codec, AOME_SET_ENABLEAUTOALTREF, 0))
+ die_codec(&codec, "Failed to turn off auto altref");
+ if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 0))
+ die_codec(&codec, "Failed to set frame parallel decoding");
+ // Note: The superblock is a sequence parameter and has to be the same for 1
+ // sequence. In lightfield application, must choose the superblock size(either
+ // 64x64 or 128x128) before the encoding starts. Otherwise, the default is
+ // AOM_SUPERBLOCK_SIZE_DYNAMIC, and the superblock size will be set to 64x64
+ // internally.
+ if (aom_codec_control(&codec, AV1E_SET_SUPERBLOCK_SIZE,
+ AOM_SUPERBLOCK_SIZE_64X64))
+ die_codec(&codec, "Failed to set SB size");
+
+ u_blocks = (lf_width + lf_blocksize - 1) / lf_blocksize;
+ v_blocks = (lf_height + lf_blocksize - 1) / lf_blocksize;
+
+ reference_image_num = u_blocks * v_blocks;
+ aom_img_fmt_t ref_fmt = AOM_IMG_FMT_I420;
+ if (!CONFIG_LOWBITDEPTH) ref_fmt |= AOM_IMG_FMT_HIGHBITDEPTH;
+ // Allocate memory with the border so that it can be used as a reference.
+ for (i = 0; i < reference_image_num; i++) {
+ if (!aom_img_alloc_with_border(&reference_images[i], ref_fmt, cfg->g_w,
+ cfg->g_h, 32, 8, AOM_BORDER_IN_PIXELS)) {
+ die("Failed to allocate image.");
+ }
+ }
+
+ printf("\n Second pass: ");
+
+ // Encode reference images first.
+ printf("Encoding Reference Images\n");
+ for (bv = 0; bv < v_blocks; ++bv) {
+ for (bu = 0; bu < u_blocks; ++bu) {
+ const int block_u_min = bu * lf_blocksize;
+ const int block_v_min = bv * lf_blocksize;
+ int block_u_end = (bu + 1) * lf_blocksize;
+ int block_v_end = (bv + 1) * lf_blocksize;
+ int u_block_size, v_block_size;
+ int block_ref_u, block_ref_v;
+
+ block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+ block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+ u_block_size = block_u_end - block_u_min;
+ v_block_size = block_v_end - block_v_min;
+ block_ref_u = block_u_min + u_block_size / 2;
+ block_ref_v = block_v_min + v_block_size / 2;
+
+ printf("A%d, ", (block_ref_u + block_ref_v * lf_width));
+ fseek(infile, (block_ref_u + block_ref_v * lf_width) * image_size_bytes,
+ SEEK_SET);
+ aom_img_read(raw, infile);
+
+ get_raw_image(&frame_to_encode, raw, raw_shift);
+
+ // Reference frames may be encoded without tiles.
+ ++frame_count;
+ printf("Encoding reference image %d of %d\n", bv * u_blocks + bu,
+ u_blocks * v_blocks);
+ encode_frame(&codec, frame_to_encode, frame_count, 1,
+ AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+ AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+ AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+ AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+ AOM_EFLAG_NO_UPD_ARF | AOM_EFLAG_NO_UPD_ENTROPY,
+ writer);
+
+ if (aom_codec_control(&codec, AV1_COPY_NEW_FRAME_IMAGE,
+ &reference_images[frame_count - 1]))
+ die_codec(&codec, "Failed to copy decoder reference frame");
+ }
+ }
+
+ cfg->large_scale_tile = 1;
+ // Fixed q encoding for camera frames.
+ cfg->rc_end_usage = AOM_Q;
+ if (aom_codec_enc_config_set(&codec, cfg))
+ die_codec(&codec, "Failed to configure encoder");
+
+ // The fixed q value used in encoding.
+ if (aom_codec_control(&codec, AOME_SET_CQ_LEVEL, 36))
+ die_codec(&codec, "Failed to set cq level");
+ if (aom_codec_control(&codec, AV1E_SET_FRAME_PARALLEL_DECODING, 1))
+ die_codec(&codec, "Failed to set frame parallel decoding");
+ if (aom_codec_control(&codec, AV1E_SET_SINGLE_TILE_DECODING, 1))
+ die_codec(&codec, "Failed to turn on single tile decoding");
+ // Set tile_columns and tile_rows to MAX values, which guarantees the tile
+ // size of 64 x 64 pixels(i.e. 1 SB) for <= 4k resolution.
+ if (aom_codec_control(&codec, AV1E_SET_TILE_COLUMNS, 6))
+ die_codec(&codec, "Failed to set tile width");
+ if (aom_codec_control(&codec, AV1E_SET_TILE_ROWS, 6))
+ die_codec(&codec, "Failed to set tile height");
+
+ for (bv = 0; bv < v_blocks; ++bv) {
+ for (bu = 0; bu < u_blocks; ++bu) {
+ const int block_u_min = bu * lf_blocksize;
+ const int block_v_min = bv * lf_blocksize;
+ int block_u_end = (bu + 1) * lf_blocksize;
+ int block_v_end = (bv + 1) * lf_blocksize;
+ int u, v;
+ block_u_end = block_u_end < lf_width ? block_u_end : lf_width;
+ block_v_end = block_v_end < lf_height ? block_v_end : lf_height;
+ for (v = block_v_min; v < block_v_end; ++v) {
+ for (u = block_u_min; u < block_u_end; ++u) {
+ av1_ref_frame_t ref;
+ ref.idx = 0;
+ ref.use_external_ref = 1;
+ ref.img = reference_images[bv * u_blocks + bu];
+ if (aom_codec_control(&codec, AV1_SET_REFERENCE, &ref))
+ die_codec(&codec, "Failed to set reference frame");
+
+ printf("C%d, ", (u + v * lf_width));
+ fseek(infile, (u + v * lf_width) * image_size_bytes, SEEK_SET);
+ aom_img_read(raw, infile);
+ get_raw_image(&frame_to_encode, raw, raw_shift);
+
+ ++frame_count;
+ printf("Encoding image %d of %d\n",
+ frame_count - (u_blocks * v_blocks), lf_width * lf_height);
+ encode_frame(&codec, frame_to_encode, frame_count, 1,
+ AOM_EFLAG_NO_REF_LAST2 | AOM_EFLAG_NO_REF_LAST3 |
+ AOM_EFLAG_NO_REF_GF | AOM_EFLAG_NO_REF_ARF |
+ AOM_EFLAG_NO_REF_BWD | AOM_EFLAG_NO_REF_ARF2 |
+ AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
+ AOM_EFLAG_NO_UPD_ARF | AOM_EFLAG_NO_UPD_ENTROPY,
+ writer);
+ }
+ }
+ }
+ }
+
+ // Flush encoder.
+ // No ARF, this should not be needed.
+ while (encode_frame(&codec, NULL, -1, 1, 0, writer)) {
+ }
+
+ for (i = 0; i < reference_image_num; i++) aom_img_free(&reference_images[i]);
+
+ if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
+ aom_video_writer_close(writer);
+
+ printf("\nSecond pass complete. Processed %d frames.\n", frame_count);
+}
+
+int main(int argc, char **argv) {
+ FILE *infile = NULL;
+ int w, h;
+ // The number of lightfield images in the u and v dimensions.
+ int lf_width, lf_height;
+ // Defines how many images refer to the same reference image for MCP.
+ // lf_blocksize X lf_blocksize images will all use the reference image
+ // in the middle of the block of images.
+ int lf_blocksize;
+ aom_codec_ctx_t codec;
+ aom_codec_enc_cfg_t cfg;
+ aom_image_t raw;
+ aom_image_t raw_shift;
+ aom_codec_err_t res;
+ aom_fixed_buf_t stats;
+ int flags = 0;
+
+ const AvxInterface *encoder = NULL;
+ const int fps = 30;
+ const int bitrate = 200; // kbit/s
+ const char *const width_arg = argv[1];
+ const char *const height_arg = argv[2];
+ const char *const infile_arg = argv[3];
+ const char *const outfile_arg = argv[4];
+ const char *const lf_width_arg = argv[5];
+ const char *const lf_height_arg = argv[6];
+ const char *lf_blocksize_arg = argv[7];
+ exec_name = argv[0];
+
+ if (argc < 8) die("Invalid number of arguments");
+
+ encoder = get_aom_encoder_by_name("av1");
+ if (!encoder) die("Unsupported codec.");
+
+ w = (int)strtol(width_arg, NULL, 0);
+ h = (int)strtol(height_arg, NULL, 0);
+ lf_width = (int)strtol(lf_width_arg, NULL, 0);
+ lf_height = (int)strtol(lf_height_arg, NULL, 0);
+ lf_blocksize = (int)strtol(lf_blocksize_arg, NULL, 0);
+ lf_blocksize = lf_blocksize < lf_width ? lf_blocksize : lf_width;
+ lf_blocksize = lf_blocksize < lf_height ? lf_blocksize : lf_height;
+
+ if (w <= 0 || h <= 0 || (w % 2) != 0 || (h % 2) != 0)
+ die("Invalid frame size: %dx%d", w, h);
+ if (lf_width <= 0 || lf_height <= 0)
+ die("Invalid lf_width and/or lf_height: %dx%d", lf_width, lf_height);
+ if (lf_blocksize <= 0) die("Invalid lf_blocksize: %d", lf_blocksize);
+
+ if (!aom_img_alloc(&raw, AOM_IMG_FMT_I420, w, h, 32)) {
+ die("Failed to allocate image.");
+ }
+ if (!CONFIG_LOWBITDEPTH) {
+ // Need to allocate larger buffer to use hbd internal.
+ aom_img_alloc(&raw_shift, AOM_IMG_FMT_I420 | AOM_IMG_FMT_HIGHBITDEPTH, w, h,
+ 32);
+ }
+
+ printf("Using %s\n", aom_codec_iface_name(encoder->codec_interface()));
+
+ // Configuration
+ res = aom_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
+ if (res) die_codec(&codec, "Failed to get default codec config.");
+
+ cfg.g_w = w;
+ cfg.g_h = h;
+ cfg.g_timebase.num = 1;
+ cfg.g_timebase.den = fps;
+ cfg.rc_target_bitrate = bitrate;
+ cfg.g_error_resilient = 0; // This is required.
+ cfg.g_lag_in_frames = 0; // need to set this since default is 19.
+ cfg.kf_mode = AOM_KF_DISABLED;
+ cfg.large_scale_tile = 0; // Only set it to 1 for camera frame encoding.
+ cfg.g_bit_depth = AOM_BITS_8;
+ flags |= (cfg.g_bit_depth > AOM_BITS_8 || !CONFIG_LOWBITDEPTH)
+ ? AOM_CODEC_USE_HIGHBITDEPTH
+ : 0;
+
+ if (!(infile = fopen(infile_arg, "rb")))
+ die("Failed to open %s for reading", infile_arg);
+
+ // Pass 0
+ cfg.g_pass = AOM_RC_FIRST_PASS;
+ stats = pass0(&raw, infile, encoder, &cfg, lf_width, lf_height, lf_blocksize,
+ flags, &raw_shift);
+
+ // Pass 1
+ rewind(infile);
+ cfg.g_pass = AOM_RC_LAST_PASS;
+ cfg.rc_twopass_stats_in = stats;
+ pass1(&raw, infile, outfile_arg, encoder, &cfg, lf_width, lf_height,
+ lf_blocksize, flags, &raw_shift);
+ free(stats.buf);
+
+ if (!CONFIG_LOWBITDEPTH) aom_img_free(&raw_shift);
+ aom_img_free(&raw);
+ fclose(infile);
+
+ return EXIT_SUCCESS;
+}
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