123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365 |
- /*
- * 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 Decoder
- // ==================
- //
- // This is an example of a simple lightfield decoder. It builds upon the
- // simple_decoder.c example. It takes an input file containing the compressed
- // data (in ivf format), treating it as a lightfield instead of a video; and a
- // text file with a list of tiles to decode. There is an optional parameter
- // allowing to choose the output format, and the supported formats are
- // YUV1D(default), YUV, and NV12.
- // After running the lightfield encoder, run lightfield decoder to decode a
- // batch of tiles:
- // examples/lightfield_decoder vase10x10.ivf vase_reference.yuv 4 tile_list.txt
- // 0(optional)
- // The tile_list.txt is expected to be of the form:
- // Frame <frame_index0>
- // <image_index0> <anchor_index0> <tile_col0> <tile_row0>
- // <image_index1> <anchor_index1> <tile_col1> <tile_row1>
- // ...
- // Frame <frame_index1)
- // ...
- //
- // The "Frame" markers indicate a new render frame and thus a new tile list
- // will be started and the old one flushed. The image_indexN, anchor_indexN,
- // tile_colN, and tile_rowN identify an individual tile to be decoded and
- // to use anchor_indexN anchor image for MCP.
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "aom/aom_decoder.h"
- #include "aom/aomdx.h"
- #include "aom_scale/yv12config.h"
- #include "av1/common/enums.h"
- #include "common/tools_common.h"
- #include "common/video_reader.h"
- static const char *exec_name;
- void usage_exit(void) {
- fprintf(stderr,
- "Usage: %s <infile> <outfile> <num_references> <tile_list> <output "
- "format(optional)>\n",
- exec_name);
- exit(EXIT_FAILURE);
- }
- // Output frame size
- const int output_frame_width = 512;
- const int output_frame_height = 512;
- static void aom_img_copy_tile(const aom_image_t *src, const aom_image_t *dst,
- int dst_row_offset, int dst_col_offset) {
- const int shift = (src->fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 1 : 0;
- int plane;
- for (plane = 0; plane < 3; ++plane) {
- const unsigned char *src_buf = src->planes[plane];
- const int src_stride = src->stride[plane];
- unsigned char *dst_buf = dst->planes[plane];
- const int dst_stride = dst->stride[plane];
- const int roffset =
- (plane > 0) ? dst_row_offset >> dst->y_chroma_shift : dst_row_offset;
- const int coffset =
- (plane > 0) ? dst_col_offset >> dst->x_chroma_shift : dst_col_offset;
- // col offset needs to be adjusted for HBD.
- dst_buf += roffset * dst_stride + (coffset << shift);
- const int w = (aom_img_plane_width(src, plane) << shift);
- const int h = aom_img_plane_height(src, plane);
- int y;
- for (y = 0; y < h; ++y) {
- memcpy(dst_buf, src_buf, w);
- src_buf += src_stride;
- dst_buf += dst_stride;
- }
- }
- }
- void decode_tile(aom_codec_ctx_t *codec, const unsigned char *frame,
- size_t frame_size, int tr, int tc, int ref_idx,
- aom_image_t *reference_images, aom_image_t *output,
- int *tile_idx, unsigned int *output_bit_depth,
- aom_image_t **img_ptr, int output_format) {
- AOM_CODEC_CONTROL_TYPECHECKED(codec, AV1_SET_TILE_MODE, 1);
- AOM_CODEC_CONTROL_TYPECHECKED(codec, AV1D_EXT_TILE_DEBUG, 1);
- AOM_CODEC_CONTROL_TYPECHECKED(codec, AV1_SET_DECODE_TILE_ROW, tr);
- AOM_CODEC_CONTROL_TYPECHECKED(codec, AV1_SET_DECODE_TILE_COL, tc);
- av1_ref_frame_t ref;
- ref.idx = 0;
- ref.use_external_ref = 1;
- ref.img = reference_images[ref_idx];
- if (AOM_CODEC_CONTROL_TYPECHECKED(codec, AV1_SET_REFERENCE, &ref)) {
- die_codec(codec, "Failed to set reference frame.");
- }
- aom_codec_err_t aom_status = aom_codec_decode(codec, frame, frame_size, NULL);
- if (aom_status) die_codec(codec, "Failed to decode tile.");
- aom_codec_iter_t iter = NULL;
- aom_image_t *img = aom_codec_get_frame(codec, &iter);
- if (!img) die_codec(codec, "Failed to get frame.");
- *img_ptr = img;
- // aom_img_alloc() sets bit_depth as follows:
- // output->bit_depth = (fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 16 : 8;
- // Use img->bit_depth(read from bitstream), so that aom_shift_img()
- // works as expected.
- output->bit_depth = img->bit_depth;
- *output_bit_depth = img->bit_depth;
- if (output_format != YUV1D) {
- // read out the tile size.
- unsigned int tile_size = 0;
- if (AOM_CODEC_CONTROL_TYPECHECKED(codec, AV1D_GET_TILE_SIZE, &tile_size))
- die_codec(codec, "Failed to get the tile size");
- const unsigned int tile_width = tile_size >> 16;
- const unsigned int tile_height = tile_size & 65535;
- const uint32_t output_frame_width_in_tiles =
- output_frame_width / tile_width;
- // Copy the tile to the output frame.
- const int row_offset =
- (*tile_idx / output_frame_width_in_tiles) * tile_height;
- const int col_offset =
- (*tile_idx % output_frame_width_in_tiles) * tile_width;
- aom_img_copy_tile(img, output, row_offset, col_offset);
- (*tile_idx)++;
- }
- }
- static void img_write_to_file(const aom_image_t *img, FILE *file,
- int output_format) {
- if (output_format == YUV)
- aom_img_write(img, file);
- else if (output_format == NV12)
- aom_img_write_nv12(img, file);
- else
- die("Invalid output format");
- }
- int main(int argc, char **argv) {
- FILE *outfile = NULL;
- AvxVideoReader *reader = NULL;
- const AvxVideoInfo *info = NULL;
- int num_references;
- aom_img_fmt_t ref_fmt = 0;
- aom_image_t reference_images[MAX_EXTERNAL_REFERENCES];
- aom_image_t output;
- aom_image_t *output_shifted = NULL;
- size_t frame_size = 0;
- const unsigned char *frame = NULL;
- int i, j;
- const char *tile_list_file = NULL;
- int output_format = YUV1D;
- exec_name = argv[0];
- if (argc < 5) die("Invalid number of arguments.");
- reader = aom_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]);
- num_references = (int)strtol(argv[3], NULL, 0);
- tile_list_file = argv[4];
- if (argc > 5) output_format = (int)strtol(argv[5], NULL, 0);
- if (output_format < YUV1D || output_format > NV12)
- die("Output format out of range [0, 2]");
- info = aom_video_reader_get_info(reader);
- aom_codec_iface_t *decoder;
- if (info->codec_fourcc == LST_FOURCC)
- decoder = get_aom_decoder_by_fourcc(AV1_FOURCC);
- else
- die("Unknown input codec.");
- printf("Using %s\n", aom_codec_iface_name(decoder));
- aom_codec_ctx_t codec;
- if (aom_codec_dec_init(&codec, decoder, NULL, 0))
- die_codec(&codec, "Failed to initialize decoder.");
- if (AOM_CODEC_CONTROL_TYPECHECKED(&codec, AV1D_SET_IS_ANNEXB,
- info->is_annexb)) {
- die("Failed to set annex b status");
- }
- // Decode anchor frames.
- AOM_CODEC_CONTROL_TYPECHECKED(&codec, AV1_SET_TILE_MODE, 0);
- for (i = 0; i < num_references; ++i) {
- aom_video_reader_read_frame(reader);
- frame = aom_video_reader_get_frame(reader, &frame_size);
- if (aom_codec_decode(&codec, frame, frame_size, NULL))
- die_codec(&codec, "Failed to decode frame.");
- if (i == 0) {
- if (AOM_CODEC_CONTROL_TYPECHECKED(&codec, AV1D_GET_IMG_FORMAT, &ref_fmt))
- die_codec(&codec, "Failed to get the image format");
- int frame_res[2];
- if (AOM_CODEC_CONTROL_TYPECHECKED(&codec, AV1D_GET_FRAME_SIZE, frame_res))
- die_codec(&codec, "Failed to get the image frame size");
- // Allocate memory to store decoded references. Allocate memory with the
- // border so that it can be used as a reference.
- for (j = 0; j < num_references; j++) {
- unsigned int border = AOM_DEC_BORDER_IN_PIXELS;
- if (!aom_img_alloc_with_border(&reference_images[j], ref_fmt,
- frame_res[0], frame_res[1], 32, 8,
- border)) {
- die("Failed to allocate references.");
- }
- }
- }
- if (AOM_CODEC_CONTROL_TYPECHECKED(&codec, AV1_COPY_NEW_FRAME_IMAGE,
- &reference_images[i]))
- die_codec(&codec, "Failed to copy decoded reference frame");
- aom_codec_iter_t iter = NULL;
- aom_image_t *img = NULL;
- while ((img = aom_codec_get_frame(&codec, &iter)) != NULL) {
- char name[1024];
- snprintf(name, sizeof(name), "ref_%d.yuv", i);
- printf("writing ref image to %s, %u, %u\n", name, img->d_w, img->d_h);
- FILE *ref_file = fopen(name, "wb");
- aom_img_write(img, ref_file);
- fclose(ref_file);
- }
- }
- FILE *infile = aom_video_reader_get_file(reader);
- // Record the offset of the first camera image.
- const FileOffset camera_frame_pos = ftello(infile);
- printf("Loading compressed frames into memory.\n");
- // Count the frames in the lightfield.
- int num_frames = 0;
- while (aom_video_reader_read_frame(reader)) {
- ++num_frames;
- }
- if (num_frames < 1) die("Input light field has no frames.");
- // Read all of the lightfield frames into memory.
- unsigned char **frames =
- (unsigned char **)malloc(num_frames * sizeof(unsigned char *));
- size_t *frame_sizes = (size_t *)malloc(num_frames * sizeof(size_t));
- // Seek to the first camera image.
- fseeko(infile, camera_frame_pos, SEEK_SET);
- for (int f = 0; f < num_frames; ++f) {
- aom_video_reader_read_frame(reader);
- frame = aom_video_reader_get_frame(reader, &frame_size);
- frames[f] = (unsigned char *)malloc(frame_size * sizeof(unsigned char));
- memcpy(frames[f], frame, frame_size);
- frame_sizes[f] = frame_size;
- }
- printf("Read %d frames.\n", num_frames);
- if (output_format != YUV1D) {
- // Allocate the output frame.
- aom_img_fmt_t out_fmt = ref_fmt;
- if (FORCE_HIGHBITDEPTH_DECODING) out_fmt |= AOM_IMG_FMT_HIGHBITDEPTH;
- if (!aom_img_alloc(&output, out_fmt, output_frame_width,
- output_frame_height, 32))
- die("Failed to allocate output image.");
- }
- printf("Decoding tile list from file.\n");
- char line[1024];
- FILE *tile_list_fptr = fopen(tile_list_file, "r");
- if (!tile_list_fptr) die_codec(&codec, "Failed to open tile list file.");
- int tile_list_cnt = 0;
- int tile_list_writes = 0;
- int tile_idx = 0;
- aom_image_t *out = NULL;
- unsigned int output_bit_depth = 0;
- while ((fgets(line, 1024, tile_list_fptr)) != NULL) {
- if (line[0] == 'F') {
- if (output_format != YUV1D) {
- // Write out the tile list.
- if (tile_list_cnt) {
- out = &output;
- if (output_bit_depth != 0)
- aom_shift_img(output_bit_depth, &out, &output_shifted);
- img_write_to_file(out, outfile, output_format);
- tile_list_writes++;
- }
- tile_list_cnt++;
- tile_idx = 0;
- // Then memset the frame.
- memset(output.img_data, 0, output.sz);
- }
- continue;
- }
- int image_idx, ref_idx, tc, tr;
- sscanf(line, "%d %d %d %d", &image_idx, &ref_idx, &tc, &tr);
- if (image_idx >= num_frames) {
- die("Tile list image_idx out of bounds: %d >= %d.", image_idx,
- num_frames);
- }
- if (ref_idx >= num_references) {
- die("Tile list ref_idx out of bounds: %d >= %d.", ref_idx,
- num_references);
- }
- frame = frames[image_idx];
- frame_size = frame_sizes[image_idx];
- aom_image_t *img = NULL;
- decode_tile(&codec, frame, frame_size, tr, tc, ref_idx, reference_images,
- &output, &tile_idx, &output_bit_depth, &img, output_format);
- if (output_format == YUV1D) {
- out = img;
- if (output_bit_depth != 0)
- aom_shift_img(output_bit_depth, &out, &output_shifted);
- aom_img_write(out, outfile);
- }
- }
- if (output_format != YUV1D) {
- // Write out the last tile list.
- if (tile_list_writes < tile_list_cnt) {
- out = &output;
- if (output_bit_depth != 0)
- aom_shift_img(output_bit_depth, &out, &output_shifted);
- img_write_to_file(out, outfile, output_format);
- }
- }
- if (output_shifted) aom_img_free(output_shifted);
- if (output_format != YUV1D) aom_img_free(&output);
- for (i = 0; i < num_references; i++) aom_img_free(&reference_images[i]);
- for (int f = 0; f < num_frames; ++f) {
- free(frames[f]);
- }
- free(frame_sizes);
- free(frames);
- if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
- aom_video_reader_close(reader);
- fclose(outfile);
- return EXIT_SUCCESS;
- }
|