diff options
Diffstat (limited to 'modules/vp9/encode.c')
-rw-r--r-- | modules/vp9/encode.c | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/modules/vp9/encode.c b/modules/vp9/encode.c new file mode 100644 index 0000000..7e81b51 --- /dev/null +++ b/modules/vp9/encode.c @@ -0,0 +1,315 @@ +/** + * @file vp9/encode.c VP9 Encode + * + * Copyright (C) 2010 - 2016 Creytiv.com + */ + +#include <string.h> +#include <re.h> +#include <rem.h> +#include <baresip.h> +#include <vpx/vpx_encoder.h> +#include <vpx/vp8cx.h> +#include "vp9.h" + + +enum { + HDR_SIZE = 3, +}; + + +struct videnc_state { + vpx_codec_ctx_t ctx; + struct vidsz size; + vpx_codec_pts_t pts; + unsigned fps; + unsigned bitrate; + unsigned pktsize; + bool ctxup; + uint16_t picid; + videnc_packet_h *pkth; + void *arg; + + unsigned n_frames; + unsigned n_key_frames; + size_t n_bytes; + + uint64_t ts_start; +}; + + +static void destructor(void *arg) +{ + struct videnc_state *ves = arg; + uint64_t now = tmr_jiffies(); + + re_printf("vp9: encoder: total frames %u, total bytes %zu\n", + ves->n_frames, ves->n_bytes); + re_printf(" key frames %u\n", ves->n_key_frames); + + re_printf(" average frame rate: %.1f fps\n", + ves->n_frames / (.001 * (now - ves->ts_start))); + + if (ves->ctxup) + vpx_codec_destroy(&ves->ctx); +} + + +int vp9_encode_update(struct videnc_state **vesp, const struct vidcodec *vc, + struct videnc_param *prm, const char *fmtp, + videnc_packet_h *pkth, void *arg) +{ + const struct vp9_vidcodec *vp9 = (struct vp9_vidcodec *)vc; + struct videnc_state *ves; + uint32_t max_fs; + (void)vp9; + + if (!vesp || !vc || !prm || prm->pktsize < (HDR_SIZE + 1)) + return EINVAL; + + ves = *vesp; + + if (!ves) { + + ves = mem_zalloc(sizeof(*ves), destructor); + if (!ves) + return ENOMEM; + + ves->picid = rand_u16(); + + *vesp = ves; + } + else { + if (ves->ctxup && (ves->bitrate != prm->bitrate || + ves->fps != prm->fps)) { + + vpx_codec_destroy(&ves->ctx); + ves->ctxup = false; + } + } + + ves->bitrate = prm->bitrate; + ves->pktsize = prm->pktsize; + ves->fps = prm->fps; + ves->pkth = pkth; + ves->arg = arg; + + max_fs = vp9_max_fs(fmtp); + if (max_fs > 0) + prm->max_fs = max_fs * 256; + + return 0; +} + + +static int open_encoder(struct videnc_state *ves, const struct vidsz *size) +{ + vpx_codec_enc_cfg_t cfg; + vpx_codec_err_t res; + + res = vpx_codec_enc_config_default(&vpx_codec_vp9_cx_algo, &cfg, 0); + if (res) + return EPROTO; + + /* + Profile 0 = 8 bit yuv420p + Profile 1 = 8 bit yuv422/440/444p + Profile 2 = 10/12 bit yuv420p + Profile 3 = 10/12 bit yuv422/440/444p + */ + + cfg.g_profile = 0; + cfg.g_w = size->w; + cfg.g_h = size->h; + cfg.g_timebase.num = 1; + cfg.g_timebase.den = ves->fps; + cfg.rc_target_bitrate = ves->bitrate / 1000; + cfg.g_error_resilient = VPX_ERROR_RESILIENT_DEFAULT; + cfg.g_pass = VPX_RC_ONE_PASS; + cfg.g_lag_in_frames = 0; + cfg.rc_end_usage = VPX_VBR; + cfg.kf_mode = VPX_KF_AUTO; + cfg.g_bit_depth = 8; + cfg.g_input_bit_depth = 8; + + re_printf("vp9: encoder: rc_target_bitrate %d\n", + cfg.rc_target_bitrate); + + if (ves->ctxup) { + debug("vp9: re-opening encoder\n"); + vpx_codec_destroy(&ves->ctx); + ves->ctxup = false; + } + + res = vpx_codec_enc_init(&ves->ctx, &vpx_codec_vp9_cx_algo, &cfg, + 0); + if (res) { + warning("vp9: enc init: %s\n", vpx_codec_err_to_string(res)); + return EPROTO; + } + + ves->ctxup = true; + + res = vpx_codec_control(&ves->ctx, VP8E_SET_CPUUSED, 8); + if (res) { + warning("vp9: codec ctrl: %s\n", vpx_codec_err_to_string(res)); + } + res = vpx_codec_control(&ves->ctx, VP9E_SET_NOISE_SENSITIVITY, 0); + if (res) { + warning("vp9: codec ctrl: %s\n", vpx_codec_err_to_string(res)); + } + + info("vp9: encoder opened, picture size %u x %u\n", size->w, size->h); + + return 0; +} + + +static inline void hdr_encode(uint8_t hdr[HDR_SIZE], bool start, bool end, + uint16_t picid) +{ + hdr[0] = 1<<7 | start<<3 | end<<2; + hdr[1] = 1<<7 | (picid>>8 & 0x7f); + hdr[2] = picid & 0xff; +} + + +static int send_packet(struct videnc_state *ves, bool marker, + const uint8_t *hdr, size_t hdr_len, + const uint8_t *pld, size_t pld_len) +{ + ves->n_bytes += (hdr_len + pld_len); + + return ves->pkth(marker, hdr, hdr_len, pld, pld_len, ves->arg); +} + + +static inline int packetize(struct videnc_state *ves, + bool marker, const uint8_t *buf, size_t len, + size_t maxlen, uint16_t picid) +{ + uint8_t hdr[HDR_SIZE]; + bool start = true; + int err = 0; + + maxlen -= sizeof(hdr); + + while (len > maxlen) { + + hdr_encode(hdr, start, false, picid); + + err |= send_packet(ves, false, hdr, sizeof(hdr), buf, maxlen); + + buf += maxlen; + len -= maxlen; + start = false; + } + + hdr_encode(hdr, start, true, picid); + + err |= send_packet(ves, marker, hdr, sizeof(hdr), buf, len); + + return err; +} + + +int vp9_encode(struct videnc_state *ves, bool update, + const struct vidframe *frame) +{ + vpx_enc_frame_flags_t flags = 0; + vpx_codec_iter_t iter = NULL; + vpx_codec_err_t res; + vpx_image_t *img = NULL; + vpx_img_fmt_t img_fmt; + int err, i; + + if (!ves || !frame) + return EINVAL; + + switch (frame->fmt) { + + case VID_FMT_YUV420P: + img_fmt = VPX_IMG_FMT_I420; + break; + + default: + warning("vp9: pixel format not supported (%s)\n", + vidfmt_name(frame->fmt)); + return EINVAL; + } + + if (!ves->ctxup || !vidsz_cmp(&ves->size, &frame->size)) { + + err = open_encoder(ves, &frame->size); + if (err) + return err; + + ves->size = frame->size; + + ves->ts_start = tmr_jiffies(); + } + + ++ves->n_frames; + + if (update) { + /* debug("vp9: picture update\n"); */ + flags |= VPX_EFLAG_FORCE_KF; + } + + img = vpx_img_wrap(NULL, img_fmt, frame->size.w, frame->size.h, + 16, NULL); + if (!img) { + warning("vp9: encoder: could not allocate image\n"); + err = ENOMEM; + goto out; + } + + for (i=0; i<4; i++) { + img->stride[i] = frame->linesize[i]; + img->planes[i] = frame->data[i]; + } + + res = vpx_codec_encode(&ves->ctx, img, ves->pts++, 1, + flags, VPX_DL_REALTIME); + if (res) { + warning("vp9: enc error: %s\n", vpx_codec_err_to_string(res)); + err = ENOMEM; + goto out; + } + + ++ves->picid; + + for (;;) { + bool marker = true; + const vpx_codec_cx_pkt_t *pkt; + + pkt = vpx_codec_get_cx_data(&ves->ctx, &iter); + if (!pkt) + break; + + if (pkt->kind != VPX_CODEC_CX_FRAME_PKT) { + continue; + } + + if (pkt->data.frame.flags & VPX_FRAME_IS_KEY) { + ++ves->n_key_frames; + } + + if (pkt->data.frame.flags & VPX_FRAME_IS_FRAGMENT) + marker = false; + + err = packetize(ves, + marker, + pkt->data.frame.buf, + pkt->data.frame.sz, + ves->pktsize, ves->picid); + if (err) + return err; + } + + out: + if (img) + vpx_img_free(img); + + return err; +} |