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| author | Limin Wang <lance.lmwang@gmail.com> | 2020-07-12 22:19:31 +0800 |
|---|---|---|
| committer | Limin Wang <lance.lmwang@gmail.com> | 2020-08-16 22:51:11 +0800 |
| commit | d7af6d146983f8a63304fffb8535787f9e7bdee9 (patch) | |
| tree | 6bc41eac70cf151ed1975fafd02f9a332bd77161 /libavcodec | |
| parent | 6328a5706832eac5568fb6d20fe2095790349598 (diff) | |
| download | ffmpeg-d7af6d146983f8a63304fffb8535787f9e7bdee9.tar.gz | |
avcodec/utils: calculate frame number of HEVC if the framerate > 30FPS
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/internal.h | 3 | ||||
| -rw-r--r-- | libavcodec/nvenc.c | 2 | ||||
| -rw-r--r-- | libavcodec/utils.c | 13 |
3 files changed, 15 insertions, 3 deletions
diff --git a/libavcodec/internal.h b/libavcodec/internal.h index 21486ae987..1c25aab6b9 100644 --- a/libavcodec/internal.h +++ b/libavcodec/internal.h @@ -367,6 +367,7 @@ AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx); * Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info * * @param frame Raw frame to get S12M timecode side data from + * @param rate The frame rate * @param prefix_len Number of bytes to allocate before SEI message * @param data Pointer to a variable to store allocated memory * Upon return the variable will hold NULL on error or if frame has no S12M timecode info. @@ -375,7 +376,7 @@ AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx); * @param sei_size Pointer to a variable to store generated SEI message length * @return Zero on success, negative error code on failure */ -int ff_alloc_timecode_sei(const AVFrame *frame, size_t prefix_len, +int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len, void **data, size_t *sei_size); /** diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c index ee8ba3cb39..887e11b1e2 100644 --- a/libavcodec/nvenc.c +++ b/libavcodec/nvenc.c @@ -2219,7 +2219,7 @@ static int nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame) void *tc_data = NULL; size_t tc_size = 0; - if (ff_alloc_timecode_sei(frame, 0, (void**)&tc_data, &tc_size) < 0) { + if (ff_alloc_timecode_sei(frame, avctx->framerate, 0, (void**)&tc_data, &tc_size) < 0) { av_log(ctx, AV_LOG_ERROR, "Not enough memory for timecode sei, skipping\n"); } diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 1814b417fc..14cb5cf1aa 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -2213,7 +2213,7 @@ static unsigned bcd2uint(uint8_t bcd) return low + 10*high; } -int ff_alloc_timecode_sei(const AVFrame *frame, size_t prefix_len, +int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len, void **data, size_t *sei_size) { AVFrameSideData *sd = NULL; @@ -2249,6 +2249,17 @@ int ff_alloc_timecode_sei(const AVFrame *frame, size_t prefix_len, unsigned ff = bcd2uint(tcsmpte>>24 & 0x3f); // 6-bit frames unsigned drop = tcsmpte & 1<<30 && !0; // 1-bit drop if not arbitrary bit + /* Calculate frame number of HEVC by SMPTE ST 12-1:2014 Sec 12.2 if rate > 30FPS */ + if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) { + unsigned pc; + ff *= 2; + if (av_cmp_q(rate, (AVRational) {50, 1}) == 0) + pc = !!(tcsmpte & 1 << 7); + else + pc = !!(tcsmpte & 1 << 23); + ff = (ff + pc) & 0x7f; + } + put_bits(&pb, 1, 1); // clock_timestamp_flag put_bits(&pb, 1, 1); // units_field_based_flag put_bits(&pb, 5, 0); // counting_type |