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Merge "twopass_encoder: Separate functions for first and second pass."

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This commit is contained in:
Dmitry Kovalev 2014-08-25 14:29:14 -07:00 committed by Gerrit Code Review
commit 4269a656fd
1 changed files with 89 additions and 68 deletions
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157
examples/twopass_encoder.c
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@ -119,17 +119,79 @@ static void encode_frame(vpx_codec_ctx_t *ctx,
}
}
static vpx_fixed_buf_t pass0(vpx_image_t *raw,
FILE *infile,
const VpxInterface *encoder,
vpx_codec_enc_cfg_t *cfg) {
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");
while (vpx_img_read(raw, infile)) {
++frame_count;
get_frame_stats(&codec, raw, frame_count, 1, 0, VPX_DL_BEST_QUALITY,
&stats);
}
get_frame_stats(&codec, NULL, frame_count, 1, 0, VPX_DL_BEST_QUALITY, &stats);
printf("Pass 0 complete. Processed %d frames.\n", frame_count);
if (vpx_codec_destroy(&codec))
die_codec(&codec, "Failed to destroy codec.");
return stats;
}
static void pass1(vpx_image_t *raw,
FILE *infile,
const char *outfile_name,
const VpxInterface *encoder,
vpx_codec_enc_cfg_t *cfg) {
VpxVideoInfo info = {
encoder->fourcc,
cfg->g_w,
cfg->g_h,
{cfg->g_timebase.num, cfg->g_timebase.den}
};
VpxVideoWriter *writer = NULL;
vpx_codec_ctx_t codec;
int frame_count = 0;
writer = vpx_video_writer_open(outfile_name, kContainerIVF, &info);
if (!writer)
die("Failed to open %s for writing", outfile_name);
if (vpx_codec_enc_init(&codec, encoder->codec_interface(), cfg, 0))
die_codec(&codec, "Failed to initialize encoder");
while (vpx_img_read(raw, infile)) {
++frame_count;
encode_frame(&codec, raw, frame_count, 1, 0, VPX_DL_BEST_QUALITY, writer);
}
printf("\n");
if (vpx_codec_destroy(&codec))
die_codec(&codec, "Failed to destroy codec.");
vpx_video_writer_close(writer);
printf("Pass 1 complete. Processed %d frames.\n", frame_count);
}
int main(int argc, char **argv) {
FILE *infile = NULL;
VpxVideoWriter *writer = NULL;
int w, h;
vpx_codec_ctx_t codec;
vpx_codec_enc_cfg_t cfg;
vpx_image_t raw;
vpx_codec_err_t res;
vpx_fixed_buf_t stats = {0};
VpxVideoInfo info = {0};
vpx_fixed_buf_t stats;
const VpxInterface *encoder = NULL;
int pass;
const int fps = 30; // TODO(dkovalev) add command line argument
const int bitrate = 200; // kbit/s TODO(dkovalev) add command line argument
const char *const codec_arg = argv[1];
@ -146,85 +208,44 @@ int main(int argc, char **argv) {
if (!encoder)
die("Unsupported codec.");
info.codec_fourcc = encoder->fourcc;
info.time_base.numerator = 1;
info.time_base.denominator = fps;
info.frame_width = strtol(width_arg, NULL, 0);
info.frame_height = strtol(height_arg, NULL, 0);
w = strtol(width_arg, NULL, 0);
h = strtol(height_arg, NULL, 0);
if (info.frame_width <= 0 ||
info.frame_height <= 0 ||
(info.frame_width % 2) != 0 ||
(info.frame_height % 2) != 0) {
die("Invalid frame size: %dx%d", info.frame_width, info.frame_height);
}
if (w <= 0 || h <= 0 || (w % 2) != 0 || (h % 2) != 0)
die("Invalid frame size: %dx%d", w, h);
if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, info.frame_width,
info.frame_height, 1)) {
die("Failed to allocate image", info.frame_width, info.frame_height);
}
writer = vpx_video_writer_open(outfile_arg, kContainerIVF, &info);
if (!writer)
die("Failed to open %s for writing", outfile_arg);
if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, w, h, 1))
die("Failed to allocate image", w, h);
printf("Using %s\n", vpx_codec_iface_name(encoder->codec_interface()));
// Configuration
res = vpx_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
if (res)
die_codec(&codec, "Failed to get default codec config.");
cfg.g_w = info.frame_width;
cfg.g_h = info.frame_height;
cfg.g_timebase.num = info.time_base.numerator;
cfg.g_timebase.den = info.time_base.denominator;
cfg.g_w = w;
cfg.g_h = h;
cfg.g_timebase.num = 1;
cfg.g_timebase.den = fps;
cfg.rc_target_bitrate = bitrate;
for (pass = 0; pass < 2; ++pass) {
int frame_count = 0;
if (!(infile = fopen(infile_arg, "rb")))
die("Failed to open %s for reading", infile_arg);
if (pass == 0) {
cfg.g_pass = VPX_RC_FIRST_PASS;
} else {
cfg.g_pass = VPX_RC_LAST_PASS;
cfg.rc_twopass_stats_in = stats;
}
// Pass 0
cfg.g_pass = VPX_RC_FIRST_PASS;
stats = pass0(&raw, infile, encoder, &cfg);
if (!(infile = fopen(infile_arg, "rb")))
die("Failed to open %s for reading", infile_arg);
if (vpx_codec_enc_init(&codec, encoder->codec_interface(), &cfg, 0))
die_codec(&codec, "Failed to initialize encoder");
while (vpx_img_read(&raw, infile)) {
++frame_count;
if (pass == 0) {
get_frame_stats(&codec, &raw, frame_count, 1, 0, VPX_DL_BEST_QUALITY,
&stats);
} else {
encode_frame(&codec, &raw, frame_count, 1, 0, VPX_DL_BEST_QUALITY,
writer);
}
}
if (pass == 0) {
get_frame_stats(&codec, NULL, frame_count, 1, 0, VPX_DL_BEST_QUALITY,
&stats);
} else {
printf("\n");
}
fclose(infile);
printf("Pass %d complete. Processed %d frames.\n", pass + 1, frame_count);
if (vpx_codec_destroy(&codec))
die_codec(&codec, "Failed to destroy codec.");
}
vpx_img_free(&raw);
// Pass 1
rewind(infile);
cfg.g_pass = VPX_RC_LAST_PASS;
cfg.rc_twopass_stats_in = stats;
pass1(&raw, infile, outfile_arg, encoder, &cfg);
free(stats.buf);
vpx_video_writer_close(writer);
vpx_img_free(&raw);
fclose(infile);
return EXIT_SUCCESS;
}