Index: source/libvpx/examples/vp9_spatial_scalable_encoder.c |
=================================================================== |
--- source/libvpx/examples/vp9_spatial_scalable_encoder.c (revision 271012) |
+++ source/libvpx/examples/vp9_spatial_scalable_encoder.c (working copy) |
@@ -1,391 +0,0 @@ |
-/* |
- * 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 "./tools_common.h" |
-#include "./video_writer.h" |
- |
-#include "vpx/svc_context.h" |
-#include "vpx/vp8cx.h" |
-#include "vpx/vpx_encoder.h" |
-#include "./vpxstats.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 for non key frames, also will " |
- "be applied to key frames if -qn is not specified (lowest to " |
- "highest layer)"); |
-static const arg_def_t quantizers_keyframe_arg = |
- ARG_DEF("qn", "quantizers-keyframe", 1, "quantizers for key frames (lowest " |
- "to highest layer)"); |
-static const arg_def_t passes_arg = |
- ARG_DEF("p", "passes", 1, "Number of passes (1/2)"); |
-static const arg_def_t pass_arg = |
- ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)"); |
-static const arg_def_t fpf_name_arg = |
- ARG_DEF(NULL, "fpf", 1, "First pass statistics file name"); |
-static const arg_def_t min_q_arg = |
- ARG_DEF(NULL, "min-q", 1, "Minimum quantizer"); |
-static const arg_def_t max_q_arg = |
- ARG_DEF(NULL, "max-q", 1, "Maximum quantizer"); |
-static const arg_def_t min_bitrate_arg = |
- ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate"); |
-static const arg_def_t max_bitrate_arg = |
- ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate"); |
- |
-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, |
- &quantizers_keyframe_arg, &passes_arg, &pass_arg, |
- &fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg, |
- &max_bitrate_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 { |
- const char *input_filename; |
- const char *output_filename; |
- uint32_t frames_to_code; |
- uint32_t frames_to_skip; |
- struct VpxInputContext input_ctx; |
- stats_io_t rc_stats; |
- int passes; |
- int pass; |
-} AppInput; |
- |
-static const char *exec_name; |
- |
-void usage_exit() { |
- 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 parse_command_line(int argc, const char **argv_, |
- AppInput *app_input, SvcContext *svc_ctx, |
- vpx_codec_enc_cfg_t *enc_cfg) { |
- struct arg arg = {0}; |
- char **argv = NULL; |
- char **argi = NULL; |
- char **argj = NULL; |
- vpx_codec_err_t res; |
- int passes = 0; |
- int pass = 0; |
- const char *fpf_file_name = NULL; |
- unsigned int min_bitrate = 0; |
- unsigned int max_bitrate = 0; |
- |
- // 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, 0); |
- } else if (arg_match(&arg, &quantizers_keyframe_arg, argi)) { |
- vpx_svc_set_quantizers(svc_ctx, arg.val, 1); |
- } else if (arg_match(&arg, &passes_arg, argi)) { |
- passes = arg_parse_uint(&arg); |
- if (passes < 1 || passes > 2) { |
- die("Error: Invalid number of passes (%d)\n", passes); |
- } |
- } else if (arg_match(&arg, &pass_arg, argi)) { |
- pass = arg_parse_uint(&arg); |
- if (pass < 1 || pass > 2) { |
- die("Error: Invalid pass selected (%d)\n", pass); |
- } |
- } else if (arg_match(&arg, &fpf_name_arg, argi)) { |
- fpf_file_name = arg.val; |
- } else if (arg_match(&arg, &min_q_arg, argi)) { |
- enc_cfg->rc_min_quantizer = arg_parse_uint(&arg); |
- } else if (arg_match(&arg, &max_q_arg, argi)) { |
- enc_cfg->rc_max_quantizer = arg_parse_uint(&arg); |
- } else if (arg_match(&arg, &min_bitrate_arg, argi)) { |
- min_bitrate = arg_parse_uint(&arg); |
- } else if (arg_match(&arg, &max_bitrate_arg, argi)) { |
- max_bitrate = arg_parse_uint(&arg); |
- } else { |
- ++argj; |
- } |
- } |
- |
- if (passes == 0 || passes == 1) { |
- if (pass) { |
- fprintf(stderr, "pass is ignored since there's only one pass\n"); |
- } |
- enc_cfg->g_pass = VPX_RC_ONE_PASS; |
- } else { |
- if (pass == 0) { |
- die("pass must be specified when passes is 2\n"); |
- } |
- |
- if (fpf_file_name == NULL) { |
- die("fpf must be specified when passes is 2\n"); |
- } |
- |
- if (pass == 1) { |
- enc_cfg->g_pass = VPX_RC_FIRST_PASS; |
- if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) { |
- fatal("Failed to open statistics store"); |
- } |
- } else { |
- enc_cfg->g_pass = VPX_RC_LAST_PASS; |
- if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) { |
- fatal("Failed to open statistics store"); |
- } |
- enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats); |
- } |
- app_input->passes = passes; |
- app_input->pass = pass; |
- } |
- |
- if (enc_cfg->rc_target_bitrate > 0) { |
- if (min_bitrate > 0) { |
- enc_cfg->rc_2pass_vbr_minsection_pct = |
- min_bitrate * 100 / enc_cfg->rc_target_bitrate; |
- } |
- if (max_bitrate > 0) { |
- enc_cfg->rc_2pass_vbr_maxsection_pct = |
- max_bitrate * 100 / enc_cfg->rc_target_bitrate; |
- } |
- } |
- |
- // 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(); |
- } |
- app_input->input_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}; |
- VpxVideoWriter *writer = NULL; |
- VpxVideoInfo info = {0}; |
- 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 */ |
- FILE *infile = NULL; |
- int end_of_stream = 0; |
- |
- memset(&svc_ctx, 0, sizeof(svc_ctx)); |
- svc_ctx.log_print = 1; |
- exec_name = argv[0]; |
- 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 (!(infile = fopen(app_input.input_filename, "rb"))) |
- die("Failed to open %s for reading\n", app_input.input_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"); |
- |
- info.codec_fourcc = VP9_FOURCC; |
- info.time_base.numerator = enc_cfg.g_timebase.num; |
- info.time_base.denominator = enc_cfg.g_timebase.den; |
- if (vpx_svc_get_layer_resolution(&svc_ctx, svc_ctx.spatial_layers - 1, |
- (unsigned int *)&info.frame_width, |
- (unsigned int *)&info.frame_height) != |
- VPX_CODEC_OK) { |
- die("Failed to get output resolution"); |
- } |
- |
- if (!(app_input.passes == 2 && app_input.pass == 1)) { |
- // We don't save the bitstream for the 1st pass on two pass rate control |
- writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF, |
- &info); |
- if (!writer) |
- die("Failed to open %s for writing\n", app_input.output_filename); |
- } |
- |
- // skip initial frames |
- for (i = 0; i < app_input.frames_to_skip; ++i) |
- vpx_img_read(&raw, infile); |
- |
- // Encode frames |
- while (!end_of_stream) { |
- if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) { |
- // We need one extra vpx_svc_encode call at end of stream to flush |
- // encoder and get remaining data |
- end_of_stream = 1; |
- } |
- |
- res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw), |
- pts, frame_duration, VPX_DL_GOOD_QUALITY); |
- printf("%s", vpx_svc_get_message(&svc_ctx)); |
- if (res != VPX_CODEC_OK) { |
- die_codec(&codec, "Failed to encode frame"); |
- } |
- if (!(app_input.passes == 2 && app_input.pass == 1)) { |
- if (vpx_svc_get_frame_size(&svc_ctx) > 0) { |
- vpx_video_writer_write_frame(writer, |
- vpx_svc_get_buffer(&svc_ctx), |
- vpx_svc_get_frame_size(&svc_ctx), |
- pts); |
- } |
- } |
- if (vpx_svc_get_rc_stats_buffer_size(&svc_ctx) > 0) { |
- stats_write(&app_input.rc_stats, |
- vpx_svc_get_rc_stats_buffer(&svc_ctx), |
- vpx_svc_get_rc_stats_buffer_size(&svc_ctx)); |
- } |
- if (!end_of_stream) { |
- ++frame_cnt; |
- pts += frame_duration; |
- } |
- } |
- |
- printf("Processed %d frames\n", frame_cnt); |
- |
- fclose(infile); |
- if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec"); |
- |
- if (app_input.passes == 2) |
- stats_close(&app_input.rc_stats, 1); |
- |
- if (writer) { |
- vpx_video_writer_close(writer); |
- } |
- |
- vpx_img_free(&raw); |
- |
- // display average size, psnr |
- printf("%s", vpx_svc_dump_statistics(&svc_ctx)); |
- |
- vpx_svc_release(&svc_ctx); |
- |
- return EXIT_SUCCESS; |
-} |