ref: 2c465567e6c75ba675e922110e27c80c0d0a63ad
parent: 8a5cb084e6e40ba0f6e979843a599bae85a24812
author: angiebird <angiebird@google.com>
date: Mon Feb 3 11:44:43 EST 2020
Let SimpleEncode be able to output bitstream Add outfile_path to SimpleEncode() with default value NULL. The encoder will only output bitstream when outfile_path is set. Change-Id: Ic68e5358ea454358c510bb0ae214f4201cb3db39
--- a/ivfenc.c
+++ b/ivfenc.c
@@ -13,8 +13,10 @@
#include "vpx/vpx_encoder.h"
#include "vpx_ports/mem_ops.h"
-void ivf_write_file_header(FILE *outfile, const struct vpx_codec_enc_cfg *cfg,
- unsigned int fourcc, int frame_cnt) {+void ivf_write_file_header_with_video_info(FILE *outfile, unsigned int fourcc,
+ int frame_cnt, int frame_width,
+ int frame_height,
+ vpx_rational_t timebase) {char header[32];
header[0] = 'D';
@@ -21,17 +23,23 @@
header[1] = 'K';
header[2] = 'I';
header[3] = 'F';
- mem_put_le16(header + 4, 0); // version
- mem_put_le16(header + 6, 32); // header size
- mem_put_le32(header + 8, fourcc); // fourcc
- mem_put_le16(header + 12, cfg->g_w); // width
- mem_put_le16(header + 14, cfg->g_h); // height
- mem_put_le32(header + 16, cfg->g_timebase.den); // rate
- mem_put_le32(header + 20, cfg->g_timebase.num); // scale
- mem_put_le32(header + 24, frame_cnt); // length
- mem_put_le32(header + 28, 0); // unused
+ mem_put_le16(header + 4, 0); // version
+ mem_put_le16(header + 6, 32); // header size
+ mem_put_le32(header + 8, fourcc); // fourcc
+ mem_put_le16(header + 12, frame_width); // width
+ mem_put_le16(header + 14, frame_height); // height
+ mem_put_le32(header + 16, timebase.den); // rate
+ mem_put_le32(header + 20, timebase.num); // scale
+ mem_put_le32(header + 24, frame_cnt); // length
+ mem_put_le32(header + 28, 0); // unused
fwrite(header, 1, 32, outfile);
+}
+
+void ivf_write_file_header(FILE *outfile, const struct vpx_codec_enc_cfg *cfg,
+ unsigned int fourcc, int frame_cnt) {+ ivf_write_file_header_with_video_info(outfile, fourcc, frame_cnt, cfg->g_w,
+ cfg->g_h, cfg->g_timebase);
}
void ivf_write_frame_header(FILE *outfile, int64_t pts, size_t frame_size) {--- a/ivfenc.h
+++ b/ivfenc.h
@@ -12,6 +12,8 @@
#include "./tools_common.h"
+#include "vpx/vpx_encoder.h"
+
struct vpx_codec_enc_cfg;
struct vpx_codec_cx_pkt;
@@ -18,6 +20,11 @@
#ifdef __cplusplus
extern "C" {#endif
+
+void ivf_write_file_header_with_video_info(FILE *outfile, unsigned int fourcc,
+ int frame_cnt, int frame_width,
+ int frame_height,
+ vpx_rational_t timebase);
void ivf_write_file_header(FILE *outfile, const struct vpx_codec_enc_cfg *cfg,
uint32_t fourcc, int frame_cnt);
--- a/vp9/simple_encode.cc
+++ b/vp9/simple_encode.cc
@@ -10,6 +10,7 @@
#include <memory>
#include <vector>
+#include "./ivfenc.h"
#include "vp9/common/vp9_entropymode.h"
#include "vp9/common/vp9_enums.h"
#include "vp9/common/vp9_onyxc_int.h"
@@ -122,6 +123,13 @@
return v;
}
+static INLINE vpx_rational_t inverse_vpx_rational(vpx_rational_t v) {+ vpx_rational_t inverse_v;
+ inverse_v.num = v.den;
+ inverse_v.den = v.num;
+ return inverse_v;
+}
+
static INLINE FrameType
get_frame_type_from_update_type(FRAME_UPDATE_TYPE update_type) {// TODO(angiebird): Figure out if we need frame type other than key frame,
@@ -517,7 +525,7 @@
SimpleEncode::SimpleEncode(int frame_width, int frame_height,
int frame_rate_num, int frame_rate_den,
int target_bitrate, int num_frames,
- const char *infile_path) {+ const char *infile_path, const char *outfile_path) {impl_ptr_ = std::unique_ptr<EncodeImpl>(new EncodeImpl());
frame_width_ = frame_width;
frame_height_ = frame_height;
@@ -526,7 +534,12 @@
target_bitrate_ = target_bitrate;
num_frames_ = num_frames;
// TODO(angirbid): Should we keep a file pointer here or keep the file_path?
- file_ = fopen(infile_path, "r");
+ in_file_ = fopen(infile_path, "r");
+ if (outfile_path != NULL) {+ out_file_ = fopen(outfile_path, "w");
+ } else {+ out_file_ = NULL;
+ }
impl_ptr_->cpi = NULL;
impl_ptr_->img_fmt = VPX_IMG_FMT_I420;
}
@@ -546,11 +559,11 @@
#endif
vpx_image_t img;
vpx_img_alloc(&img, impl_ptr_->img_fmt, frame_width_, frame_height_, 1);
- rewind(file_);
+ rewind(in_file_);
impl_ptr_->first_pass_stats.clear();
for (i = 0; i < num_frames_; ++i) {assert(!vp9_lookahead_full(lookahead));
- if (img_read(&img, file_)) {+ if (img_read(&img, in_file_)) {int next_show_idx = vp9_lookahead_next_show_idx(lookahead);
int64_t ts_start =
timebase_units_to_ticks(&oxcf.g_timebase_in_ts, next_show_idx);
@@ -581,7 +594,7 @@
// TODO(angiebird): Store the total_stats apart form first_pass_stats
impl_ptr_->first_pass_stats.push_back(vp9_get_total_stats(&cpi->twopass));
free_encoder(cpi);
- rewind(file_);
+ rewind(in_file_);
vpx_img_free(&img);
}
@@ -625,7 +638,15 @@
vpx_img_alloc(&impl_ptr_->tmp_img, impl_ptr_->img_fmt, frame_width_,
frame_height_, 1);
UpdateGroupOfPicture(impl_ptr_->cpi, &group_of_picture_);
- rewind(file_);
+ rewind(in_file_);
+
+ if (out_file_ != NULL) {+ const char *fourcc = "VP90";
+ vpx_rational_t time_base = inverse_vpx_rational(frame_rate);
+ ivf_write_file_header_with_video_info(out_file_, *(const uint32_t *)fourcc,
+ num_frames_, frame_width_,
+ frame_height_, time_base);
+ }
}
void SimpleEncode::EndEncode() {@@ -632,7 +653,7 @@
free_encoder(impl_ptr_->cpi);
impl_ptr_->cpi = nullptr;
vpx_img_free(&impl_ptr_->tmp_img);
- rewind(file_);
+ rewind(in_file_);
}
int SimpleEncode::GetKeyFrameGroupSize(int key_frame_index) const {@@ -666,7 +687,7 @@
while (!vp9_lookahead_full(lookahead)) {// TODO(angiebird): Check whether we can move this file read logics to
// lookahead
- if (img_read(&impl_ptr_->tmp_img, file_)) {+ if (img_read(&impl_ptr_->tmp_img, in_file_)) {int next_show_idx = vp9_lookahead_next_show_idx(lookahead);
int64_t ts_start =
timebase_units_to_ticks(&cpi->oxcf.g_timebase_in_ts, next_show_idx);
@@ -694,6 +715,13 @@
&encode_frame_result->coding_data_byte_size,
encode_frame_result->coding_data.get(), &time_stamp,
&time_end, flush, &encode_frame_info);
+ if (out_file_ != NULL) {+ ivf_write_frame_header(out_file_, time_stamp,
+ encode_frame_result->coding_data_byte_size);
+ fwrite(encode_frame_result->coding_data.get(), 1,
+ encode_frame_result->coding_data_byte_size, out_file_);
+ }
+
// vp9_get_compressed_data is expected to encode a frame every time, so the
// data size should be greater than zero.
if (encode_frame_result->coding_data_byte_size <= 0) {@@ -763,8 +791,11 @@
}
SimpleEncode::~SimpleEncode() {- if (this->file_ != NULL) {- fclose(this->file_);
+ if (in_file_ != NULL) {+ fclose(in_file_);
+ }
+ if (out_file_ != NULL) {+ fclose(out_file_);
}
}
--- a/vp9/simple_encode.h
+++ b/vp9/simple_encode.h
@@ -202,9 +202,11 @@
class SimpleEncode {public:
+ // When outfile_path is set, the encoder will output the bitstream in ivf
+ // format.
SimpleEncode(int frame_width, int frame_height, int frame_rate_num,
int frame_rate_den, int target_bitrate, int num_frames,
- const char *infile_path);
+ const char *infile_path, const char *outfile_path = NULL);
~SimpleEncode();
SimpleEncode(SimpleEncode &) = delete;
SimpleEncode &operator=(const SimpleEncode &) = delete;
@@ -268,7 +270,8 @@
int frame_rate_den_;
int target_bitrate_;
int num_frames_;
- std::FILE *file_;
+ std::FILE *in_file_;
+ std::FILE *out_file_;
std::unique_ptr<EncodeImpl> impl_ptr_;
GroupOfPicture group_of_picture_;