vpx/vp9_spatial_scalable_encoder.c

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/*
* Copyright (c) 2012 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.
*/
/*
* This is an example demonstrating how to implement a multi-layer
* VP9 encoding scheme based on spatial scalability for video applications
* that benefit from a scalable bitstream.
*/
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "./args.h"
#include "./ivfenc.h"
#include "./tools_common.h"
#include "vpx/svc_context.h"
#include "vpx/vp8cx.h"
#include "vpx/vpx_encoder.h"
static const struct arg_enum_list encoding_mode_enum[] = {
{"i", INTER_LAYER_PREDICTION_I},
{"alt-ip", ALT_INTER_LAYER_PREDICTION_IP},
{"ip", INTER_LAYER_PREDICTION_IP},
{"gf", USE_GOLDEN_FRAME},
{NULL, 0}
};
static const arg_def_t encoding_mode_arg = ARG_DEF_ENUM(
"m", "encoding-mode", 1, "Encoding mode algorithm", encoding_mode_enum);
static const arg_def_t skip_frames_arg =
ARG_DEF("s", "skip-frames", 1, "input frames to skip");
static const arg_def_t frames_arg =
ARG_DEF("f", "frames", 1, "number of frames to encode");
static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
static const arg_def_t timebase_arg =
ARG_DEF("t", "timebase", 1, "timebase (num/den)");
static const arg_def_t bitrate_arg = ARG_DEF(
"b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
static const arg_def_t layers_arg =
ARG_DEF("l", "layers", 1, "number of SVC layers");
static const arg_def_t kf_dist_arg =
ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
static const arg_def_t scale_factors_arg =
ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
static const arg_def_t quantizers_arg =
ARG_DEF("q", "quantizers", 1, "quantizers (lowest to highest layer)");
static const arg_def_t *svc_args[] = {
&encoding_mode_arg, &frames_arg, &width_arg, &height_arg,
&timebase_arg, &bitrate_arg, &skip_frames_arg, &layers_arg,
&kf_dist_arg, &scale_factors_arg, &quantizers_arg, NULL
};
static const SVC_ENCODING_MODE default_encoding_mode =
INTER_LAYER_PREDICTION_IP;
static const uint32_t default_frames_to_skip = 0;
static const uint32_t default_frames_to_code = 60 * 60;
static const uint32_t default_width = 1920;
static const uint32_t default_height = 1080;
static const uint32_t default_timebase_num = 1;
static const uint32_t default_timebase_den = 60;
static const uint32_t default_bitrate = 1000;
static const uint32_t default_spatial_layers = 5;
static const uint32_t default_kf_dist = 100;
typedef struct {
char *output_filename;
uint32_t frames_to_code;
uint32_t frames_to_skip;
struct VpxInputContext input_ctx;
} AppInput;
void usage_exit(const char *exec_name) {
fprintf(stderr, "Usage: %s <options> input_filename output_filename\n",
exec_name);
fprintf(stderr, "Options:\n");
arg_show_usage(stderr, svc_args);
exit(EXIT_FAILURE);
}
static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
const char *detail = vpx_codec_error_detail(ctx);
printf("%s: %s\n", s, vpx_codec_error(ctx));
if (detail) printf(" %s\n", detail);
exit(EXIT_FAILURE);
}
static int create_dummy_frame(vpx_image_t *img) {
const size_t buf_size = img->w * img->h * 3 / 2;
memset(img->planes[0], 129, buf_size);
return 1;
}
static void parse_command_line(int argc, const char **argv_,
AppInput *app_input, SvcContext *svc_ctx,
vpx_codec_enc_cfg_t *enc_cfg) {
struct arg arg;
char **argv, **argi, **argj;
vpx_codec_err_t res;
// initialize SvcContext with parameters that will be passed to vpx_svc_init
svc_ctx->log_level = SVC_LOG_DEBUG;
svc_ctx->spatial_layers = default_spatial_layers;
svc_ctx->encoding_mode = default_encoding_mode;
// start with default encoder configuration
res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
if (res) {
die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
}
// update enc_cfg with app default values
enc_cfg->g_w = default_width;
enc_cfg->g_h = default_height;
enc_cfg->g_timebase.num = default_timebase_num;
enc_cfg->g_timebase.den = default_timebase_den;
enc_cfg->rc_target_bitrate = default_bitrate;
enc_cfg->kf_min_dist = default_kf_dist;
enc_cfg->kf_max_dist = default_kf_dist;
// initialize AppInput with default values
app_input->frames_to_code = default_frames_to_code;
app_input->frames_to_skip = default_frames_to_skip;
// process command line options
argv = argv_dup(argc - 1, argv_ + 1);
for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
arg.argv_step = 1;
if (arg_match(&arg, &encoding_mode_arg, argi)) {
svc_ctx->encoding_mode = arg_parse_enum_or_int(&arg);
} else if (arg_match(&arg, &frames_arg, argi)) {
app_input->frames_to_code = arg_parse_uint(&arg);
} else if (arg_match(&arg, &width_arg, argi)) {
enc_cfg->g_w = arg_parse_uint(&arg);
} else if (arg_match(&arg, &height_arg, argi)) {
enc_cfg->g_h = arg_parse_uint(&arg);
} else if (arg_match(&arg, &timebase_arg, argi)) {
enc_cfg->g_timebase = arg_parse_rational(&arg);
} else if (arg_match(&arg, &bitrate_arg, argi)) {
enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
} else if (arg_match(&arg, &skip_frames_arg, argi)) {
app_input->frames_to_skip = arg_parse_uint(&arg);
} else if (arg_match(&arg, &layers_arg, argi)) {
svc_ctx->spatial_layers = arg_parse_uint(&arg);
} else if (arg_match(&arg, &kf_dist_arg, argi)) {
enc_cfg->kf_min_dist = arg_parse_uint(&arg);
enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
} else if (arg_match(&arg, &scale_factors_arg, argi)) {
vpx_svc_set_scale_factors(svc_ctx, arg.val);
} else if (arg_match(&arg, &quantizers_arg, argi)) {
vpx_svc_set_quantizers(svc_ctx, arg.val);
} else {
++argj;
}
}
// Check for unrecognized options
for (argi = argv; *argi; ++argi)
if (argi[0][0] == '-' && strlen(argi[0]) > 1)
die("Error: Unrecognized option %s\n", *argi);
if (argv[0] == NULL || argv[1] == 0) {
usage_exit(argv_[0]);
}
app_input->input_ctx.filename = argv[0];
app_input->output_filename = argv[1];
free(argv);
if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
enc_cfg->g_h % 2)
die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
printf(
"Codec %s\nframes: %d, skip: %d\n"
"mode: %d, layers: %d\n"
"width %d, height: %d,\n"
"num: %d, den: %d, bitrate: %d,\n"
"gop size: %d\n",
vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
app_input->frames_to_skip, svc_ctx->encoding_mode,
svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h,
enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
}
int main(int argc, const char **argv) {
AppInput app_input = {0};
FILE *outfile;
vpx_codec_ctx_t codec;
vpx_codec_enc_cfg_t enc_cfg;
SvcContext svc_ctx;
uint32_t i;
uint32_t frame_cnt = 0;
vpx_image_t raw;
vpx_codec_err_t res;
int pts = 0; /* PTS starts at 0 */
int frame_duration = 1; /* 1 timebase tick per frame */
vpx_codec_cx_pkt_t packet = {0};
packet.kind = VPX_CODEC_CX_FRAME_PKT;
memset(&svc_ctx, 0, sizeof(svc_ctx));
svc_ctx.log_print = 1;
parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
// Allocate image buffer
if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32))
die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
if (!(app_input.input_ctx.file = fopen(app_input.input_ctx.filename, "rb")))
die("Failed to open %s for reading\n", app_input.input_ctx.filename);
if (!(outfile = fopen(app_input.output_filename, "wb")))
die("Failed to open %s for writing\n", app_input.output_filename);
// Initialize codec
if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) !=
VPX_CODEC_OK)
die("Failed to initialize encoder\n");
SVC improvements These changes were originally made in the Stratacaster team-review repository commit e114bffcd82ad74c3696ec58e13c0ac895d6c82d Author: Charles 'Buck' Krasic <ckrasic@google.com> Date: Mon Oct 14 16:52:13 2013 -0700 Make dummy frame handling a bit more explicit, fixing bug with single layer encodes. Squashed commit of the following: commit 1ebbfd976c0fadb02bf1ea562a2d0e3f0206daad Merge: ac468dd 54e88b7 Author: Ivan Maltz <ivanmaltz@google.com> Date: Fri Oct 11 17:29:58 2013 -0700 Move SVC code from vp9_spatial_scalable_encoder to libvpx module accessible from ffmpeg commit 54e88b78b160becc9569fc3c6cb6b0a8c95dc357 Author: Ivan Maltz <ivanmaltz@google.com> Date: Tue Oct 8 09:08:40 2013 -0700 common svc encoding code for sample app and ffmpeg added svc_encodeframe.c, svc_context.h, svc_test.cc vp9_spatial_scalable_encoder uses vpx_svc_encode commit 5616ec8e2e3d3e8d277333d8a9242f6c70151162 Merge: 4528014 e29137d Author: Ivan Maltz <ivanmaltz@google.com> Date: Tue Oct 8 08:47:58 2013 -0700 Merge branch 'master' into stratacaster commit 45280148450b1f3d61e390df8aadedf85cd5bce1 Merge: bb2b675 1ab60f7 Author: Sujeevan Rajayogam <sujee@google.com> Date: Fri Oct 4 10:22:31 2013 -0700 Merge branch 'master' into stratacaster commit bb2b675e595dc9bfc8551e963edf56800c3aea61 Author: Sujeevan Rajayogam <sujee@google.com> Date: Wed Oct 2 12:37:26 2013 -0700 Track individual frame sizes and psnrs instead of averages. commit c6d303b714795c81e7ceb4173967115c9f8ff5b7 Merge: fa87df9 3583087 Author: Sujeevan Rajayogam <sujee@google.com> Date: Fri Sep 27 10:05:35 2013 -0700 Merge branch 'master' into stratacaster commit fa87df94fba923d9f7aeb8ae20c6e15f777e00b5 Merge: bf22d71 3c465af Author: Sujeevan Rajayogam <sujee@google.com> Date: Thu Sep 26 16:10:31 2013 -0700 Merge branch 'master' into stratacaster commit bf22d7144895a82e0c348ac177c8a261b9e2b88e Author: Sujeevan Rajayogam <sujee@google.com> Date: Thu Sep 26 11:10:34 2013 -0700 Parameterized quantizer, 16th scalefactors, more logging, enabled single layer encodes to generate baseline. commit ceffd7e6025b765f9886b5ea0f324248aa37e327 Author: Sujeevan Rajayogam <sujee@google.com> Date: Thu Sep 19 10:04:49 2013 -0700 - Include new mode for 3 layer I frame with 5 total layers. - Refactor svc api. Change-Id: Ie4d775e21e006fa597d884c59488dc999478e9b5
2013-10-12 03:03:00 +02:00
ivf_write_file_header(outfile, &enc_cfg, VP9_FOURCC, 0);
// skip initial frames
for (i = 0; i < app_input.frames_to_skip; ++i) {
read_yuv_frame(&app_input.input_ctx, &raw);
}
// Encode frames
while (frame_cnt < app_input.frames_to_code) {
if (read_yuv_frame(&app_input.input_ctx, &raw)) break;
res = vpx_svc_encode(&svc_ctx, &codec, &raw, pts, frame_duration,
VPX_DL_REALTIME);
printf("%s", vpx_svc_get_message(&svc_ctx));
if (res != VPX_CODEC_OK) {
die_codec(&codec, "Failed to encode frame");
}
if (vpx_svc_get_frame_size(&svc_ctx) > 0) {
packet.data.frame.pts = pts;
packet.data.frame.sz = vpx_svc_get_frame_size(&svc_ctx);
ivf_write_frame_header(outfile, &packet);
(void)fwrite(vpx_svc_get_buffer(&svc_ctx), 1,
vpx_svc_get_frame_size(&svc_ctx), outfile);
}
++frame_cnt;
pts += frame_duration;
}
printf("Processed %d frames\n", frame_cnt);
fclose(app_input.input_ctx.file);
if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
// rewrite the output file headers with the actual frame count
if (!fseek(outfile, 0, SEEK_SET)) {
ivf_write_file_header(outfile, &enc_cfg, VP9_FOURCC, frame_cnt);
}
fclose(outfile);
vpx_img_free(&raw);
// display average size, psnr
printf("%s", vpx_svc_dump_statistics(&svc_ctx));
vpx_svc_release(&svc_ctx);
return EXIT_SUCCESS;
}