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aom/examples/inspect.c

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C
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/*
* Copyright (c) 2016, 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.
*/
// Inspect Decoder
// ================
//
// This is a simple decoder loop that writes JSON stats to stdout. This tool
// can also be compiled with Emscripten and used as a library.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "./args.h"
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#else
#define EMSCRIPTEN_KEEPALIVE
#endif
#include "aom/aom_decoder.h"
#include "./aom_config.h"
#if CONFIG_ACCOUNTING
#include "../av1/decoder/accounting.h"
#endif
#include "../av1/decoder/inspection.h"
#include "aom/aomdx.h"
#include "../tools_common.h"
#include "../video_reader.h"
// #include "av1/av1_dx_iface.c"
#include "../av1/common/onyxc_int.h"
#include "../video_common.h"
// Max JSON buffer size.
const int MAX_BUFFER = 1024 * 1024 * 32;
typedef enum {
ACCOUNTING_LAYER = 1,
BLOCK_SIZE_LAYER = 1 << 1,
TRANSFORM_SIZE_LAYER = 1 << 2,
TRANSFORM_TYPE_LAYER = 1 << 3,
MODE_LAYER = 1 << 4,
SKIP_LAYER = 1 << 5,
FILTER_LAYER = 1 << 6,
CDEF_LAYER = 1 << 7,
REFERENCE_FRAME_LAYER = 1 << 8,
MOTION_VECTORS_LAYER = 1 << 9,
UV_MODE_LAYER = 1 << 10,
CFL_LAYER = 1 << 11,
ALL_LAYERS = (1 << 12) - 1
} LayerType;
static LayerType layers = 0;
static int stop_after = 0;
static int compress = 0;
static const arg_def_t limit_arg =
ARG_DEF(NULL, "limit", 1, "Stop decoding after n frames");
static const arg_def_t dump_all_arg = ARG_DEF("A", "all", 0, "Dump All");
static const arg_def_t compress_arg =
ARG_DEF("x", "compress", 0, "Compress JSON using RLE");
static const arg_def_t dump_accounting_arg =
ARG_DEF("a", "accounting", 0, "Dump Accounting");
static const arg_def_t dump_block_size_arg =
ARG_DEF("bs", "blockSize", 0, "Dump Block Size");
static const arg_def_t dump_motion_vectors_arg =
ARG_DEF("mv", "motionVectors", 0, "Dump Motion Vectors");
static const arg_def_t dump_transform_size_arg =
ARG_DEF("ts", "transformSize", 0, "Dump Transform Size");
static const arg_def_t dump_transform_type_arg =
ARG_DEF("tt", "transformType", 0, "Dump Transform Type");
static const arg_def_t dump_mode_arg = ARG_DEF("m", "mode", 0, "Dump Mode");
static const arg_def_t dump_uv_mode_arg =
ARG_DEF("uvm", "uv_mode", 0, "Dump UV Intra Prediction Modes");
static const arg_def_t dump_skip_arg = ARG_DEF("s", "skip", 0, "Dump Skip");
static const arg_def_t dump_filter_arg =
ARG_DEF("f", "filter", 0, "Dump Filter");
static const arg_def_t dump_cdef_arg = ARG_DEF("c", "cdef", 0, "Dump CDEF");
#if CONFIG_CFL
static const arg_def_t dump_cfl_arg =
ARG_DEF("cfl", "chroma_from_luma", 0, "Dump Chroma from Luma Alphas");
#endif
static const arg_def_t dump_reference_frame_arg =
ARG_DEF("r", "referenceFrame", 0, "Dump Reference Frame");
static const arg_def_t usage_arg = ARG_DEF("h", "help", 0, "Help");
static const arg_def_t *main_args[] = { &limit_arg,
&dump_all_arg,
&compress_arg,
#if CONFIG_ACCOUNTING
&dump_accounting_arg,
#endif
&dump_block_size_arg,
&dump_transform_size_arg,
&dump_transform_type_arg,
&dump_mode_arg,
&dump_uv_mode_arg,
&dump_skip_arg,
&dump_filter_arg,
#if CONFIG_CDEF
&dump_cdef_arg,
#endif
#if CONFIG_CFL
&dump_cfl_arg,
#endif
&dump_reference_frame_arg,
&dump_motion_vectors_arg,
&usage_arg,
NULL };
#define ENUM(name) \
{ #name, name }
#define LAST_ENUM \
{ NULL, 0 }
typedef struct map_entry {
const char *name;
int value;
} map_entry;
const map_entry refs_map[] = { ENUM(INTRA_FRAME), ENUM(LAST_FRAME),
#if CONFIG_EXT_REFS
ENUM(LAST2_FRAME), ENUM(LAST3_FRAME),
ENUM(GOLDEN_FRAME), ENUM(BWDREF_FRAME),
ENUM(ALTREF_FRAME),
#else
ENUM(GOLDEN_FRAME), ENUM(ALTREF_FRAME),
#endif
LAST_ENUM };
const map_entry block_size_map[] = {
#if CONFIG_CHROMA_2X2 || CONFIG_CHROMA_SUB8X8
ENUM(BLOCK_2X2), ENUM(BLOCK_2X4), ENUM(BLOCK_4X2),
#endif
ENUM(BLOCK_4X4), ENUM(BLOCK_4X8), ENUM(BLOCK_8X4),
ENUM(BLOCK_8X8), ENUM(BLOCK_8X16), ENUM(BLOCK_16X8),
ENUM(BLOCK_16X16), ENUM(BLOCK_16X32), ENUM(BLOCK_32X16),
ENUM(BLOCK_32X32), ENUM(BLOCK_32X64), ENUM(BLOCK_64X32),
ENUM(BLOCK_64X64),
#if CONFIG_EXT_PARTITION
ENUM(BLOCK_64X128), ENUM(BLOCK_128X64), ENUM(BLOCK_128X128),
#endif
LAST_ENUM
};
const map_entry tx_size_map[] = {
#if CONFIG_CHROMA_2X2
ENUM(TX_2X2),
#endif
ENUM(TX_4X4), ENUM(TX_8X8), ENUM(TX_16X16), ENUM(TX_32X32),
#if CONFIG_TX64X64
ENUM(TX_64X64),
#endif
ENUM(TX_4X8), ENUM(TX_8X4), ENUM(TX_8X16), ENUM(TX_16X8),
ENUM(TX_16X32), ENUM(TX_32X16), ENUM(TX_4X16), ENUM(TX_16X4),
ENUM(TX_8X32), ENUM(TX_32X8), LAST_ENUM
};
const map_entry tx_type_map[] = { ENUM(DCT_DCT),
ENUM(ADST_DCT),
ENUM(DCT_ADST),
ENUM(ADST_ADST),
#if CONFIG_EXT_TX
ENUM(FLIPADST_DCT),
ENUM(DCT_FLIPADST),
ENUM(FLIPADST_FLIPADST),
ENUM(ADST_FLIPADST),
ENUM(FLIPADST_ADST),
ENUM(IDTX),
ENUM(V_DCT),
ENUM(H_DCT),
ENUM(V_ADST),
ENUM(H_ADST),
ENUM(V_FLIPADST),
ENUM(H_FLIPADST),
#endif
LAST_ENUM };
const map_entry prediction_mode_map[] = { ENUM(DC_PRED),
ENUM(V_PRED),
ENUM(H_PRED),
ENUM(D45_PRED),
ENUM(D135_PRED),
ENUM(D117_PRED),
ENUM(D153_PRED),
ENUM(D207_PRED),
ENUM(D63_PRED),
#if CONFIG_ALT_INTRA
ENUM(SMOOTH_PRED),
#if CONFIG_SMOOTH_HV
ENUM(SMOOTH_V_PRED),
ENUM(SMOOTH_H_PRED),
#endif // CONFIG_SMOOTH_HV
#endif // CONFIG_ALT_INTRA
ENUM(TM_PRED),
ENUM(NEARESTMV),
ENUM(NEARMV),
ENUM(ZEROMV),
ENUM(NEWMV),
#if CONFIG_EXT_INTER
ENUM(NEAREST_NEARESTMV),
ENUM(NEAR_NEARMV),
ENUM(NEAREST_NEWMV),
ENUM(NEW_NEARESTMV),
ENUM(NEAR_NEWMV),
ENUM(NEW_NEARMV),
ENUM(ZERO_ZEROMV),
ENUM(NEW_NEWMV),
#endif
ENUM(INTRA_INVALID),
LAST_ENUM };
#define NO_SKIP 0
#define SKIP 1
const map_entry skip_map[] = { ENUM(SKIP), ENUM(NO_SKIP), LAST_ENUM };
const map_entry config_map[] = { ENUM(MI_SIZE), LAST_ENUM };
static const char *exec_name;
insp_frame_data frame_data;
int frame_count = 0;
int decoded_frame_count = 0;
aom_codec_ctx_t codec;
AvxVideoReader *reader = NULL;
const AvxVideoInfo *info = NULL;
aom_image_t *img = NULL;
void on_frame_decoded_dump(char *json) {
#ifdef __EMSCRIPTEN__
EM_ASM_({ Module.on_frame_decoded_json($0); }, json);
#else
printf("%s", json);
#endif
}
// Writing out the JSON buffer using snprintf is very slow, especially when
// compiled with emscripten, these functions speed things up quite a bit.
int put_str(char *buffer, const char *str) {
int i;
for (i = 0; str[i] != '\0'; i++) {
buffer[i] = str[i];
}
return i;
}
int put_num(char *buffer, char prefix, int num, char suffix) {
int i = 0;
char *buf = buffer;
int is_neg = 0;
if (prefix) {
buf[i++] = prefix;
}
if (num == 0) {
buf[i++] = '0';
} else {
if (num < 0) {
num = -num;
is_neg = 1;
}
int s = i;
while (num != 0) {
buf[i++] = '0' + (num % 10);
num = num / 10;
}
if (is_neg) {
buf[i++] = '-';
}
int e = i - 1;
while (s < e) {
int t = buf[s];
buf[s] = buf[e];
buf[e] = t;
s++;
e--;
}
}
if (suffix) {
buf[i++] = suffix;
}
return i;
}
int put_map(char *buffer, const map_entry *map) {
char *buf = buffer;
const map_entry *entry = map;
while (entry->name != NULL) {
*(buf++) = '"';
buf += put_str(buf, entry->name);
*(buf++) = '"';
buf += put_num(buf, ':', entry->value, 0);
entry++;
if (entry->name != NULL) {
*(buf++) = ',';
}
}
return buf - buffer;
}
int put_reference_frame(char *buffer) {
const int mi_rows = frame_data.mi_rows;
const int mi_cols = frame_data.mi_cols;
char *buf = buffer;
int r, c, t;
buf += put_str(buf, " \"referenceFrameMap\": {");
buf += put_map(buf, refs_map);
buf += put_str(buf, "},\n");
buf += put_str(buf, " \"referenceFrame\": [");
for (r = 0; r < mi_rows; ++r) {
*(buf++) = '[';
for (c = 0; c < mi_cols; ++c) {
insp_mi_data *mi = &frame_data.mi_grid[r * mi_cols + c];
buf += put_num(buf, '[', mi->ref_frame[0], 0);
buf += put_num(buf, ',', mi->ref_frame[1], ']');
if (compress) { // RLE
for (t = c + 1; t < mi_cols; ++t) {
insp_mi_data *next_mi = &frame_data.mi_grid[r * mi_cols + t];
if (mi->ref_frame[0] != next_mi->ref_frame[0] ||
mi->ref_frame[1] != next_mi->ref_frame[1]) {
break;
}
}
if (t - c > 1) {
*(buf++) = ',';
buf += put_num(buf, '[', t - c - 1, ']');
c = t - 1;
}
}
if (c < mi_cols - 1) *(buf++) = ',';
}
*(buf++) = ']';
if (r < mi_rows - 1) *(buf++) = ',';
}
buf += put_str(buf, "],\n");
return buf - buffer;
}
int put_motion_vectors(char *buffer) {
const int mi_rows = frame_data.mi_rows;
const int mi_cols = frame_data.mi_cols;
char *buf = buffer;
int r, c, t;
buf += put_str(buf, " \"motionVectors\": [");
for (r = 0; r < mi_rows; ++r) {
*(buf++) = '[';
for (c = 0; c < mi_cols; ++c) {
insp_mi_data *mi = &frame_data.mi_grid[r * mi_cols + c];
buf += put_num(buf, '[', mi->mv[0].col, 0);
buf += put_num(buf, ',', mi->mv[0].row, 0);
buf += put_num(buf, ',', mi->mv[1].col, 0);
buf += put_num(buf, ',', mi->mv[1].row, ']');
if (compress) { // RLE
for (t = c + 1; t < mi_cols; ++t) {
insp_mi_data *next_mi = &frame_data.mi_grid[r * mi_cols + t];
if (mi->mv[0].col != next_mi->mv[0].col ||
mi->mv[0].row != next_mi->mv[0].row ||
mi->mv[1].col != next_mi->mv[1].col ||
mi->mv[1].row != next_mi->mv[1].row) {
break;
}
}
if (t - c > 1) {
*(buf++) = ',';
buf += put_num(buf, '[', t - c - 1, ']');
c = t - 1;
}
}
if (c < mi_cols - 1) *(buf++) = ',';
}
*(buf++) = ']';
if (r < mi_rows - 1) *(buf++) = ',';
}
buf += put_str(buf, "],\n");
return buf - buffer;
}
int put_block_info(char *buffer, const map_entry *map, const char *name,
size_t offset) {
const int mi_rows = frame_data.mi_rows;
const int mi_cols = frame_data.mi_cols;
char *buf = buffer;
int r, c, t, v;
if (map) {
buf += snprintf(buf, MAX_BUFFER, " \"%sMap\": {", name);
buf += put_map(buf, map);
buf += put_str(buf, "},\n");
}
buf += snprintf(buf, MAX_BUFFER, " \"%s\": [", name);
for (r = 0; r < mi_rows; ++r) {
*(buf++) = '[';
for (c = 0; c < mi_cols; ++c) {
insp_mi_data *curr_mi = &frame_data.mi_grid[r * mi_cols + c];
v = *(((int8_t *)curr_mi) + offset);
buf += put_num(buf, 0, v, 0);
if (compress) { // RLE
for (t = c + 1; t < mi_cols; ++t) {
insp_mi_data *next_mi = &frame_data.mi_grid[r * mi_cols + t];
if (v != *(((int8_t *)next_mi) + offset)) {
break;
}
}
if (t - c > 1) {
*(buf++) = ',';
buf += put_num(buf, '[', t - c - 1, ']');
c = t - 1;
}
}
if (c < mi_cols - 1) *(buf++) = ',';
}
*(buf++) = ']';
if (r < mi_rows - 1) *(buf++) = ',';
}
buf += put_str(buf, "],\n");
return buf - buffer;
}
#if CONFIG_ACCOUNTING
int put_accounting(char *buffer) {
char *buf = buffer;
int i;
const Accounting *accounting = frame_data.accounting;
if (accounting == NULL) {
printf("XXX\n");
return 0;
}
const int num_syms = accounting->syms.num_syms;
const int num_strs = accounting->syms.dictionary.num_strs;
buf += put_str(buf, " \"symbolsMap\": [");
for (i = 0; i < num_strs; i++) {
buf += snprintf(buf, MAX_BUFFER, "\"%s\"",
accounting->syms.dictionary.strs[i]);
if (i < num_strs - 1) *(buf++) = ',';
}
buf += put_str(buf, "],\n");
buf += put_str(buf, " \"symbols\": [\n ");
AccountingSymbolContext context;
context.x = -2;
context.y = -2;
AccountingSymbol *sym;
for (i = 0; i < num_syms; i++) {
sym = &accounting->syms.syms[i];
if (memcmp(&context, &sym->context, sizeof(AccountingSymbolContext)) != 0) {
buf += put_num(buf, '[', sym->context.x, 0);
buf += put_num(buf, ',', sym->context.y, ']');
} else {
buf += put_num(buf, '[', sym->id, 0);
buf += put_num(buf, ',', sym->bits, 0);
buf += put_num(buf, ',', sym->samples, ']');
}
context = sym->context;
if (i < num_syms - 1) *(buf++) = ',';
}
buf += put_str(buf, "],\n");
return buf - buffer;
}
#endif
void inspect(void *pbi, void *data) {
/* Fetch frame data. */
ifd_inspect(&frame_data, pbi);
(void)data;
// We allocate enough space and hope we don't write out of bounds. Totally
// unsafe but this speeds things up, especially when compiled to Javascript.
char *buffer = aom_malloc(MAX_BUFFER);
char *buf = buffer;
buf += put_str(buf, "{\n");
if (layers & BLOCK_SIZE_LAYER) {
buf += put_block_info(buf, block_size_map, "blockSize",
offsetof(insp_mi_data, sb_type));
}
if (layers & TRANSFORM_SIZE_LAYER) {
buf += put_block_info(buf, tx_size_map, "transformSize",
offsetof(insp_mi_data, tx_size));
}
if (layers & TRANSFORM_TYPE_LAYER) {
buf += put_block_info(buf, tx_type_map, "transformType",
offsetof(insp_mi_data, tx_type));
}
if (layers & MODE_LAYER) {
buf += put_block_info(buf, prediction_mode_map, "mode",
offsetof(insp_mi_data, mode));
}
if (layers & UV_MODE_LAYER) {
buf += put_block_info(buf, prediction_mode_map, "uv_mode",
offsetof(insp_mi_data, uv_mode));
}
if (layers & SKIP_LAYER) {
buf += put_block_info(buf, skip_map, "skip", offsetof(insp_mi_data, skip));
}
if (layers & FILTER_LAYER) {
buf += put_block_info(buf, NULL, "filter", offsetof(insp_mi_data, filter));
}
#if CONFIG_CDEF
if (layers & CDEF_LAYER) {
buf += put_block_info(buf, NULL, "cdef_level",
offsetof(insp_mi_data, cdef_level));
buf += put_block_info(buf, NULL, "cdef_strength",
offsetof(insp_mi_data, cdef_strength));
}
#endif
#if CONFIG_CFL
if (layers & CFL_LAYER) {
buf += put_block_info(buf, NULL, "cfl_alpha_idx",
offsetof(insp_mi_data, cfl_alpha_idx));
buf += put_block_info(buf, NULL, "cfl_alpha_sign",
offsetof(insp_mi_data, cfl_alpha_sign));
}
#endif
if (layers & MOTION_VECTORS_LAYER) {
buf += put_motion_vectors(buf);
}
if (layers & REFERENCE_FRAME_LAYER) {
buf += put_reference_frame(buf);
}
#if CONFIG_ACCOUNTING
if (layers & ACCOUNTING_LAYER) {
buf += put_accounting(buf);
}
#endif
buf += snprintf(buf, MAX_BUFFER, " \"frame\": %d,\n", decoded_frame_count);
buf += snprintf(buf, MAX_BUFFER, " \"showFrame\": %d,\n",
frame_data.show_frame);
buf += snprintf(buf, MAX_BUFFER, " \"frameType\": %d,\n",
frame_data.frame_type);
buf += snprintf(buf, MAX_BUFFER, " \"baseQIndex\": %d,\n",
frame_data.base_qindex);
buf += snprintf(buf, MAX_BUFFER, " \"tileCols\": %d,\n",
frame_data.tile_mi_cols);
buf += snprintf(buf, MAX_BUFFER, " \"tileRows\": %d,\n",
frame_data.tile_mi_rows);
buf += put_str(buf, " \"config\": {");
buf += put_map(buf, config_map);
buf += put_str(buf, "},\n");
buf += snprintf(buf, MAX_BUFFER, " \"configString\": \"%s\"\n",
aom_codec_build_config());
decoded_frame_count++;
buf += put_str(buf, "},\n");
*(buf++) = 0;
on_frame_decoded_dump(buffer);
aom_free(buffer);
}
void ifd_init_cb() {
aom_inspect_init ii;
ii.inspect_cb = inspect;
ii.inspect_ctx = NULL;
aom_codec_control(&codec, AV1_SET_INSPECTION_CALLBACK, &ii);
}
EMSCRIPTEN_KEEPALIVE
int open_file(char *file) {
if (file == NULL) {
// The JS analyzer puts the .ivf file at this location.
file = "/tmp/input.ivf";
}
reader = aom_video_reader_open(file);
if (!reader) die("Failed to open %s for reading.", file);
info = aom_video_reader_get_info(reader);
const AvxInterface *decoder = get_aom_decoder_by_fourcc(info->codec_fourcc);
if (!decoder) die("Unknown input codec.");
fprintf(stderr, "Using %s\n",
aom_codec_iface_name(decoder->codec_interface()));
if (aom_codec_dec_init(&codec, decoder->codec_interface(), NULL, 0))
die_codec(&codec, "Failed to initialize decoder.");
ifd_init(&frame_data, info->frame_width, info->frame_height);
ifd_init_cb();
return EXIT_SUCCESS;
}
EMSCRIPTEN_KEEPALIVE
int read_frame() {
if (!aom_video_reader_read_frame(reader)) return EXIT_FAILURE;
img = NULL;
aom_codec_iter_t iter = NULL;
size_t frame_size = 0;
const unsigned char *frame = aom_video_reader_get_frame(reader, &frame_size);
if (aom_codec_decode(&codec, frame, (unsigned int)frame_size, NULL, 0) !=
AOM_CODEC_OK) {
die_codec(&codec, "Failed to decode frame.");
}
img = aom_codec_get_frame(&codec, &iter);
if (img == NULL) {
return EXIT_FAILURE;
}
++frame_count;
return EXIT_SUCCESS;
}
EMSCRIPTEN_KEEPALIVE
const char *get_aom_codec_build_config() { return aom_codec_build_config(); }
EMSCRIPTEN_KEEPALIVE
int get_bit_depth() { return img->bit_depth; }
EMSCRIPTEN_KEEPALIVE
int get_bits_per_sample() { return img->bps; }
EMSCRIPTEN_KEEPALIVE
int get_image_format() { return img->fmt; }
EMSCRIPTEN_KEEPALIVE
unsigned char *get_plane(int plane) { return img->planes[plane]; }
EMSCRIPTEN_KEEPALIVE
int get_plane_stride(int plane) { return img->stride[plane]; }
EMSCRIPTEN_KEEPALIVE
int get_plane_width(int plane) { return aom_img_plane_width(img, plane); }
EMSCRIPTEN_KEEPALIVE
int get_plane_height(int plane) { return aom_img_plane_height(img, plane); }
EMSCRIPTEN_KEEPALIVE
int get_frame_width() { return info->frame_width; }
EMSCRIPTEN_KEEPALIVE
int get_frame_height() { return info->frame_height; }
static void parse_args(char **argv) {
char **argi, **argj;
struct arg arg;
(void)dump_accounting_arg;
(void)dump_cdef_arg;
for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
arg.argv_step = 1;
if (arg_match(&arg, &dump_block_size_arg, argi)) layers |= BLOCK_SIZE_LAYER;
#if CONFIG_ACCOUNTING
else if (arg_match(&arg, &dump_accounting_arg, argi))
layers |= ACCOUNTING_LAYER;
#endif
else if (arg_match(&arg, &dump_transform_size_arg, argi))
layers |= TRANSFORM_SIZE_LAYER;
else if (arg_match(&arg, &dump_transform_type_arg, argi))
layers |= TRANSFORM_TYPE_LAYER;
else if (arg_match(&arg, &dump_mode_arg, argi))
layers |= MODE_LAYER;
else if (arg_match(&arg, &dump_uv_mode_arg, argi))
layers |= UV_MODE_LAYER;
else if (arg_match(&arg, &dump_skip_arg, argi))
layers |= SKIP_LAYER;
else if (arg_match(&arg, &dump_filter_arg, argi))
layers |= FILTER_LAYER;
#if CONFIG_CDEF
else if (arg_match(&arg, &dump_cdef_arg, argi))
layers |= CDEF_LAYER;
#endif
#if CONFIG_CFL
else if (arg_match(&arg, &dump_cfl_arg, argi))
layers |= CFL_LAYER;
#endif
else if (arg_match(&arg, &dump_reference_frame_arg, argi))
layers |= REFERENCE_FRAME_LAYER;
else if (arg_match(&arg, &dump_motion_vectors_arg, argi))
layers |= MOTION_VECTORS_LAYER;
else if (arg_match(&arg, &dump_all_arg, argi))
layers |= ALL_LAYERS;
else if (arg_match(&arg, &compress_arg, argi))
compress = 1;
else if (arg_match(&arg, &usage_arg, argi))
usage_exit();
else if (arg_match(&arg, &limit_arg, argi))
stop_after = arg_parse_uint(&arg);
else
argj++;
}
}
static const char *exec_name;
void usage_exit(void) {
fprintf(stderr, "Usage: %s src_filename <options>\n", exec_name);
fprintf(stderr, "\nOptions:\n");
arg_show_usage(stderr, main_args);
exit(EXIT_FAILURE);
}
EMSCRIPTEN_KEEPALIVE
int main(int argc, char **argv) {
exec_name = argv[0];
parse_args(argv);
if (argc >= 2) {
open_file(argv[1]);
printf("[\n");
while (1) {
if (stop_after && (decoded_frame_count >= stop_after)) break;
if (read_frame()) break;
}
printf("null\n");
printf("]");
} else {
usage_exit();
}
}
EMSCRIPTEN_KEEPALIVE
void quit() {
if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
aom_video_reader_close(reader);
}
EMSCRIPTEN_KEEPALIVE
void set_layers(LayerType v) { layers = v; }
EMSCRIPTEN_KEEPALIVE
void set_compress(int v) { compress = v; }
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