// Encoding A Frame
// ----------------
// Encoding a frame in two pass mode is identical to the simple encoder
-// example, except the deadline is set to VPX_DL_BEST_QUALITY to get the
-// best quality possible. VPX_DL_GOOD_QUALITY could also be used.
-//
+// example. To increase the quality while sacrificing encoding speed,
+// VPX_DL_BEST_QUALITY can be used in place of VPX_DL_GOOD_QUALITY.
//
// Processing Statistics Packets
// -----------------------------
#include <stdlib.h>
#include <string.h>
-#define VPX_CODEC_DISABLE_COMPAT 1
#include "vpx/vpx_encoder.h"
-#include "./tools_common.h"
-#include "./video_writer.h"
+#include "../tools_common.h"
+#include "../video_writer.h"
static const char *exec_name;
-void usage_exit() {
- fprintf(stderr, "Usage: %s <codec> <width> <height> <infile> <outfile>\n",
+void usage_exit(void) {
+ fprintf(stderr,
+ "Usage: %s <codec> <width> <height> <infile> <outfile> "
+ "<frame limit>\n",
exec_name);
exit(EXIT_FAILURE);
}
-static void get_frame_stats(vpx_codec_ctx_t *ctx,
- const vpx_image_t *img,
- vpx_codec_pts_t pts,
- unsigned int duration,
- vpx_enc_frame_flags_t flags,
- unsigned int deadline,
- vpx_fixed_buf_t *stats) {
+static int get_frame_stats(vpx_codec_ctx_t *ctx,
+ const vpx_image_t *img,
+ vpx_codec_pts_t pts,
+ unsigned int duration,
+ vpx_enc_frame_flags_t flags,
+ unsigned int deadline,
+ vpx_fixed_buf_t *stats) {
+ int got_pkts = 0;
vpx_codec_iter_t iter = NULL;
const vpx_codec_cx_pkt_t *pkt = NULL;
const vpx_codec_err_t res = vpx_codec_encode(ctx, img, pts, duration, flags,
die_codec(ctx, "Failed to get frame stats.");
while ((pkt = vpx_codec_get_cx_data(ctx, &iter)) != NULL) {
+ got_pkts = 1;
+
if (pkt->kind == VPX_CODEC_STATS_PKT) {
const uint8_t *const pkt_buf = pkt->data.twopass_stats.buf;
const size_t pkt_size = pkt->data.twopass_stats.sz;
stats->sz += pkt_size;
}
}
+
+ return got_pkts;
}
-static void encode_frame(vpx_codec_ctx_t *ctx,
- const vpx_image_t *img,
- vpx_codec_pts_t pts,
- unsigned int duration,
- vpx_enc_frame_flags_t flags,
- unsigned int deadline,
- VpxVideoWriter *writer) {
+static int encode_frame(vpx_codec_ctx_t *ctx,
+ const vpx_image_t *img,
+ vpx_codec_pts_t pts,
+ unsigned int duration,
+ vpx_enc_frame_flags_t flags,
+ unsigned int deadline,
+ VpxVideoWriter *writer) {
+ int got_pkts = 0;
vpx_codec_iter_t iter = NULL;
const vpx_codec_cx_pkt_t *pkt = NULL;
const vpx_codec_err_t res = vpx_codec_encode(ctx, img, pts, duration, flags,
die_codec(ctx, "Failed to encode frame.");
while ((pkt = vpx_codec_get_cx_data(ctx, &iter)) != NULL) {
+ got_pkts = 1;
if (pkt->kind == VPX_CODEC_CX_FRAME_PKT) {
const int keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY) != 0;
fflush(stdout);
}
}
+
+ return got_pkts;
}
static vpx_fixed_buf_t pass0(vpx_image_t *raw,
FILE *infile,
const VpxInterface *encoder,
- vpx_codec_enc_cfg_t *cfg) {
+ const vpx_codec_enc_cfg_t *cfg,
+ int max_frames) {
vpx_codec_ctx_t codec;
int frame_count = 0;
vpx_fixed_buf_t stats = {NULL, 0};
if (vpx_codec_enc_init(&codec, encoder->codec_interface(), cfg, 0))
die_codec(&codec, "Failed to initialize encoder");
+ // Calculate frame statistics.
while (vpx_img_read(raw, infile)) {
++frame_count;
- get_frame_stats(&codec, raw, frame_count, 1, 0, VPX_DL_BEST_QUALITY,
+ get_frame_stats(&codec, raw, frame_count, 1, 0, VPX_DL_GOOD_QUALITY,
&stats);
+ if (max_frames > 0 && frame_count >= max_frames)
+ break;
}
- get_frame_stats(&codec, NULL, frame_count, 1, 0, VPX_DL_BEST_QUALITY, &stats);
+ // Flush encoder.
+ while (get_frame_stats(&codec, NULL, frame_count, 1, 0,
+ VPX_DL_GOOD_QUALITY, &stats)) {}
printf("Pass 0 complete. Processed %d frames.\n", frame_count);
if (vpx_codec_destroy(&codec))
FILE *infile,
const char *outfile_name,
const VpxInterface *encoder,
- vpx_codec_enc_cfg_t *cfg) {
+ const vpx_codec_enc_cfg_t *cfg,
+ int max_frames) {
VpxVideoInfo info = {
encoder->fourcc,
cfg->g_w,
if (vpx_codec_enc_init(&codec, encoder->codec_interface(), cfg, 0))
die_codec(&codec, "Failed to initialize encoder");
+ // Encode frames.
while (vpx_img_read(raw, infile)) {
++frame_count;
- encode_frame(&codec, raw, frame_count, 1, 0, VPX_DL_BEST_QUALITY, writer);
+ encode_frame(&codec, raw, frame_count, 1, 0, VPX_DL_GOOD_QUALITY, writer);
+
+ if (max_frames > 0 && frame_count >= max_frames)
+ break;
}
+ // Flush encoder.
+ while (encode_frame(&codec, NULL, -1, 1, 0, VPX_DL_GOOD_QUALITY, writer)) {}
+
printf("\n");
if (vpx_codec_destroy(&codec))
const char *const height_arg = argv[3];
const char *const infile_arg = argv[4];
const char *const outfile_arg = argv[5];
+ int max_frames = 0;
exec_name = argv[0];
- if (argc != 6)
+ if (argc != 7)
die("Invalid number of arguments.");
+ max_frames = strtol(argv[6], NULL, 0);
+
encoder = get_vpx_encoder_by_name(codec_arg);
if (!encoder)
die("Unsupported codec.");
// Pass 0
cfg.g_pass = VPX_RC_FIRST_PASS;
- stats = pass0(&raw, infile, encoder, &cfg);
+ stats = pass0(&raw, infile, encoder, &cfg, max_frames);
// Pass 1
rewind(infile);
cfg.g_pass = VPX_RC_LAST_PASS;
cfg.rc_twopass_stats_in = stats;
- pass1(&raw, infile, outfile_arg, encoder, &cfg);
+ pass1(&raw, infile, outfile_arg, encoder, &cfg, max_frames);
free(stats.buf);
vpx_img_free(&raw);
projects / libvpx / blobdiff