Index: source/libvpx/examples/vp9_spatial_svc_encoder.c |
=================================================================== |
--- source/libvpx/examples/vp9_spatial_svc_encoder.c (revision 0) |
+++ source/libvpx/examples/vp9_spatial_svc_encoder.c (revision 0) |
@@ -0,0 +1,391 @@ |
+/* |
+ * 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; |
+} |