generic-library/vpx
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Adding ticks <-> timebase units conversion functions.

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Change-Id: I75abd57367a7974a9fab8a727b2bbc54dea428c3
This commit is contained in:
Dmitry Kovalev 2014-08-06 14:58:53 -07:00
parent ff40d9ec29
commit 545c324971
1 changed files with 25 additions and 20 deletions
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45
vp9/vp9_cx_iface.c
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@ -803,6 +803,20 @@ static int write_superframe_index(vpx_codec_alg_priv_t *ctx) {
return index_sz; return index_sz;
} }
// vp9 uses 10,000,000 ticks/second as time stamp
#define TICKS_PER_SEC 10000000
static int64_t timebase_units_to_ticks(const vpx_rational_t *timebase,
int64_t n) {
return n * TICKS_PER_SEC * timebase->num / timebase->den;
}
static int64_t ticks_to_timebase_units(const vpx_rational_t *timebase,
int64_t n) {
const int64_t round = TICKS_PER_SEC * timebase->num / 2 - 1;
return (n * timebase->den + round) / timebase->num / TICKS_PER_SEC;
}
static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx, static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
const vpx_image_t *img, const vpx_image_t *img,
vpx_codec_pts_t pts, vpx_codec_pts_t pts,
@ -810,6 +824,7 @@ static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
vpx_enc_frame_flags_t flags, vpx_enc_frame_flags_t flags,
unsigned long deadline) { unsigned long deadline) {
vpx_codec_err_t res = VPX_CODEC_OK; vpx_codec_err_t res = VPX_CODEC_OK;
const vpx_rational_t *const timebase = &ctx->cfg.g_timebase;
if (img != NULL) { if (img != NULL) {
res = validate_img(ctx, img); res = validate_img(ctx, img);
@ -855,7 +870,9 @@ static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
if (res == VPX_CODEC_OK && ctx->cpi != NULL) { if (res == VPX_CODEC_OK && ctx->cpi != NULL) {
unsigned int lib_flags = 0; unsigned int lib_flags = 0;
YV12_BUFFER_CONFIG sd; YV12_BUFFER_CONFIG sd;
int64_t dst_time_stamp, dst_end_time_stamp; int64_t dst_time_stamp = timebase_units_to_ticks(timebase, pts);
int64_t dst_end_time_stamp =
timebase_units_to_ticks(timebase, pts + duration);
size_t size, cx_data_sz; size_t size, cx_data_sz;
unsigned char *cx_data; unsigned char *cx_data;
@ -863,12 +880,6 @@ static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
if (ctx->base.init_flags & VPX_CODEC_USE_PSNR) if (ctx->base.init_flags & VPX_CODEC_USE_PSNR)
((VP9_COMP *)ctx->cpi)->b_calculate_psnr = 1; ((VP9_COMP *)ctx->cpi)->b_calculate_psnr = 1;
/* vp9 use 10,000,000 ticks/second as time stamp */
dst_time_stamp = (pts * 10000000 * ctx->cfg.g_timebase.num)
/ ctx->cfg.g_timebase.den;
dst_end_time_stamp = (pts + duration) * 10000000 * ctx->cfg.g_timebase.num /
ctx->cfg.g_timebase.den;
if (img != NULL) { if (img != NULL) {
res = image2yuvconfig(img, &sd); res = image2yuvconfig(img, &sd);
@ -905,9 +916,8 @@ static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
cx_data, &dst_time_stamp, cx_data, &dst_time_stamp,
&dst_end_time_stamp, !img)) { &dst_end_time_stamp, !img)) {
if (size) { if (size) {
vpx_codec_pts_t round, delta;
vpx_codec_cx_pkt_t pkt;
VP9_COMP *const cpi = (VP9_COMP *)ctx->cpi; VP9_COMP *const cpi = (VP9_COMP *)ctx->cpi;
vpx_codec_cx_pkt_t pkt;
#if CONFIG_SPATIAL_SVC #if CONFIG_SPATIAL_SVC
if (cpi->use_svc && cpi->svc.number_temporal_layers == 1) if (cpi->use_svc && cpi->svc.number_temporal_layers == 1)
@ -932,15 +942,11 @@ static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
} }
// Add the frame packet to the list of returned packets. // Add the frame packet to the list of returned packets.
round = (vpx_codec_pts_t)10000000 * ctx->cfg.g_timebase.num / 2 - 1;
delta = (dst_end_time_stamp - dst_time_stamp);
pkt.kind = VPX_CODEC_CX_FRAME_PKT; pkt.kind = VPX_CODEC_CX_FRAME_PKT;
pkt.data.frame.pts = pkt.data.frame.pts = ticks_to_timebase_units(timebase, dst_time_stamp);
(dst_time_stamp * ctx->cfg.g_timebase.den + round) pkt.data.frame.duration =
/ ctx->cfg.g_timebase.num / 10000000; (unsigned long)ticks_to_timebase_units(timebase,
pkt.data.frame.duration = (unsigned long) dst_end_time_stamp - dst_time_stamp);
((delta * ctx->cfg.g_timebase.den + round)
/ ctx->cfg.g_timebase.num / 10000000);
pkt.data.frame.flags = lib_flags << 16; pkt.data.frame.flags = lib_flags << 16;
if (lib_flags & FRAMEFLAGS_KEY if (lib_flags & FRAMEFLAGS_KEY
@ -958,9 +964,8 @@ static vpx_codec_err_t encoder_encode(vpx_codec_alg_priv_t *ctx,
// prior PTS so that if a decoder uses pts to schedule when // prior PTS so that if a decoder uses pts to schedule when
// to do this, we start right after last frame was decoded. // to do this, we start right after last frame was decoded.
// Invisible frames have no duration. // Invisible frames have no duration.
pkt.data.frame.pts = ((cpi->last_time_stamp_seen pkt.data.frame.pts =
* ctx->cfg.g_timebase.den + round) ticks_to_timebase_units(timebase, cpi->last_time_stamp_seen) + 1;
/ ctx->cfg.g_timebase.num / 10000000) + 1;
pkt.data.frame.duration = 0; pkt.data.frame.duration = 0;
} }