/*
* Copyright (c) 2010, Google, Inc.
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <vpx/vp8cx.h>
#include "avcodec.h"
+#include "internal.h"
#include "libavutil/base64.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
/**
* Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
* One encoded frame returned from the library.
*/
struct FrameListData {
- void *buf; /**≤ compressed data buffer */
- size_t sz; /**≤ length of compressed data */
- int64_t pts; /**≤ time stamp to show frame
+ void *buf; /**< compressed data buffer */
+ size_t sz; /**< length of compressed data */
+ int64_t pts; /**< time stamp to show frame
(in timebase units) */
- unsigned long duration; /**≤ duration to show frame
+ unsigned long duration; /**< duration to show frame
(in timebase units) */
- uint32_t flags; /**≤ flags for this frame */
+ uint32_t flags; /**< flags for this frame */
struct FrameListData *next;
};
typedef struct VP8EncoderContext {
+ AVClass *class;
struct vpx_codec_ctx encoder;
struct vpx_image rawimg;
struct vpx_fixed_buf twopass_stats;
unsigned long deadline; //i.e., RT/GOOD/BEST
struct FrameListData *coded_frame_list;
+ int cpu_used;
+ int auto_alt_ref;
+ int arnr_max_frames;
+ int arnr_strength;
+ int arnr_type;
+ int lag_in_frames;
+ int error_resilient;
} VP8Context;
/** String mappings for enum vp8e_enc_control_id */
{
VP8Context *ctx = avctx->priv_data;
const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
- int cpuused = 3;
struct vpx_codec_enc_cfg enccfg;
int res;
enccfg.g_timebase.den = avctx->time_base.den;
enccfg.g_threads = avctx->thread_count;
+ if (ctx->lag_in_frames >= 0)
+ enccfg.g_lag_in_frames = ctx->lag_in_frames;
+
if (avctx->flags & CODEC_FLAG_PASS1)
enccfg.g_pass = VPX_RC_FIRST_PASS;
else if (avctx->flags & CODEC_FLAG_PASS2)
enccfg.rc_end_usage = VPX_CBR;
enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
AV_ROUND_NEAR_INF);
-
- //convert [1,51] -> [0,63]
- enccfg.rc_min_quantizer = ((avctx->qmin * 5 + 1) >> 2) - 1;
- enccfg.rc_max_quantizer = ((avctx->qmax * 5 + 1) >> 2) - 1;
-
- if (avctx->keyint_min == avctx->gop_size)
- enccfg.kf_mode = VPX_KF_FIXED;
- //_enc_init() will balk if kf_min_dist is set in this case
- if (enccfg.kf_mode != VPX_KF_AUTO)
+ if (avctx->qmin > 0)
+ enccfg.rc_min_quantizer = avctx->qmin;
+ if (avctx->qmax > 0)
+ enccfg.rc_max_quantizer = avctx->qmax;
+ enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
+
+ //0-100 (0 => CBR, 100 => VBR)
+ enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
+ enccfg.rc_2pass_vbr_minsection_pct =
+ avctx->rc_min_rate * 100LL / avctx->bit_rate;
+ if (avctx->rc_max_rate)
+ enccfg.rc_2pass_vbr_maxsection_pct =
+ avctx->rc_max_rate * 100LL / avctx->bit_rate;
+
+ if (avctx->rc_buffer_size)
+ enccfg.rc_buf_sz =
+ avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
+ if (avctx->rc_initial_buffer_occupancy)
+ enccfg.rc_buf_initial_sz =
+ avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
+ enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;
+
+ //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
+ if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
enccfg.kf_min_dist = avctx->keyint_min;
- enccfg.kf_max_dist = avctx->gop_size;
+ if (avctx->gop_size >= 0)
+ enccfg.kf_max_dist = avctx->gop_size;
if (enccfg.g_pass == VPX_RC_FIRST_PASS)
enccfg.g_lag_in_frames = 0;
enccfg.rc_twopass_stats_in = ctx->twopass_stats;
}
- ctx->deadline = VPX_DL_GOOD_QUALITY;
+ /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
+ complexity playback on low powered devices at the expense of encode
+ quality. */
+ if (avctx->profile != FF_PROFILE_UNKNOWN)
+ enccfg.g_profile = avctx->profile;
+
+ enccfg.g_error_resilient = ctx->error_resilient;
dump_enc_cfg(avctx, &enccfg);
/* Construct Encoder Context */
//codec control failures are currently treated only as warnings
av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
- codecctl_int(avctx, VP8E_SET_CPUUSED, cpuused);
+ if (ctx->cpu_used != INT_MIN)
+ codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
+ if (ctx->auto_alt_ref >= 0)
+ codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
+ if (ctx->arnr_max_frames >= 0)
+ codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);
+ if (ctx->arnr_strength >= 0)
+ codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);
+ if (ctx->arnr_type >= 0)
+ codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);
codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
+ codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));
+ codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);
//provide dummy value to initialize wrapper, values will be updated each _encode()
vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
if (coded_frame->key_frame)
- coded_frame->pict_type = FF_I_TYPE;
+ coded_frame->pict_type = AV_PICTURE_TYPE_I;
else
- coded_frame->pict_type = FF_P_TYPE;
+ coded_frame->pict_type = AV_PICTURE_TYPE_P;
} else {
av_log(avctx, AV_LOG_ERROR,
"Compressed frame larger than storage provided! (%zu/%d)\n",
coded_size = queue_frames(avctx, buf, buf_size, avctx->coded_frame);
if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
- unsigned int b64_size = ((ctx->twopass_stats.sz + 2) / 3) * 4 + 1;
+ unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
avctx->stats_out = av_malloc(b64_size);
if (!avctx->stats_out) {
return coded_size;
}
-AVCodec libvpx_encoder = {
- "libvpx",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_VP8,
- sizeof(VP8Context),
- vp8_init,
- vp8_encode,
- vp8_free,
- NULL,
- CODEC_CAP_DELAY,
+#define OFFSET(x) offsetof(VP8Context, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE},
+ { "auto-alt-ref", "Enable use of alternate reference "
+ "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {-1}, -1, 1, VE},
+ { "lag-in-frames", "Number of frames to look ahead for "
+ "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
+ { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
+ { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE},
+ { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {-1}, -1, INT_MAX, VE, "arnr_type"},
+ { "backward", NULL, 0, AV_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" },
+ { "forward", NULL, 0, AV_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" },
+ { "centered", NULL, 0, AV_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" },
+ { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
+ { "best", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
+ { "good", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
+ { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_REALTIME}, 0, 0, VE, "quality"},
+ { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"},
+#ifdef VPX_ERROR_RESILIENT_DEFAULT
+ { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
+ { "partitions", "The frame partitions are independently decodable "
+ "by the bool decoder, meaning that partitions can be decoded even "
+ "though earlier partitions have been lost. Note that intra predicition"
+ " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
+#endif
+ { NULL }
+};
+
+static const AVClass class = {
+ .class_name = "libvpx encoder",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+static const AVCodecDefault defaults[] = {
+ { "qmin", "-1" },
+ { "qmax", "-1" },
+ { "g", "-1" },
+ { "keyint_min", "-1" },
+ { NULL },
+};
+
+AVCodec ff_libvpx_encoder = {
+ .name = "libvpx",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_VP8,
+ .priv_data_size = sizeof(VP8Context),
+ .init = vp8_init,
+ .encode = vp8_encode,
+ .close = vp8_free,
+ .capabilities = CODEC_CAP_DELAY,
.pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
.long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
+ .priv_class = &class,
+ .defaults = defaults,
};
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