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FFmpeg/libavcodec/libvpxenc.c
Vignesh Venkatasubramanian 98c292a7a8 Adding support for encoding VP8 Alpha 
This patch adds support for encoding VP8 files with alpha. The alpha channel
is encoded separately and the output is placed in AVPacket's side_data. The
muxer then muxes it into the BlockAdditional element of the matroska container.
More details on spec here: http://goo.gl/wCP1y

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-05-17 15:11:23 +02:00

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/*
* Copyright (c) 2010, Google, Inc.
*
* This file is part of FFmpeg.
*
* FFmpeg 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,
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* VP8 encoder support via libvpx
*/
#define VPX_DISABLE_CTRL_TYPECHECKS 1
#define VPX_CODEC_DISABLE_COMPAT 1
#include <vpx/vpx_encoder.h>
#include <vpx/vp8cx.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/base64.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.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 */
void *buf_alpha;
size_t sz_alpha;
int64_t pts; /**< time stamp to show frame
(in timebase units) */
unsigned long duration; /**< duration to show frame
(in timebase units) */
uint32_t flags; /**< flags for this frame */
uint64_t sse[4];
int have_sse; /**< true if we have pending sse[] */
uint64_t frame_number;
struct FrameListData *next;
};
typedef struct VP8EncoderContext {
AVClass *class;
struct vpx_codec_ctx encoder;
struct vpx_image rawimg;
struct vpx_codec_ctx encoder_alpha;
struct vpx_image rawimg_alpha;
uint8_t is_alpha;
struct vpx_fixed_buf twopass_stats;
int deadline; //i.e., RT/GOOD/BEST
uint64_t sse[4];
int have_sse; /**< true if we have pending sse[] */
uint64_t frame_number;
struct FrameListData *coded_frame_list;
int cpu_used;
/**
* VP8 specific flags, see VP8F_* below.
*/
int flags;
#define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
#define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation
int auto_alt_ref;
int arnr_max_frames;
int arnr_strength;
int arnr_type;
int lag_in_frames;
int error_resilient;
int crf;
int max_intra_rate;
} VP8Context;
/** String mappings for enum vp8e_enc_control_id */
static const char *const ctlidstr[] = {
[VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",
[VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",
[VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",
[VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",
[VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",
[VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",
[VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",
[VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",
[VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
[VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",
[VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",
[VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",
[VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",
[VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",
[VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",
[VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",
[VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",
[VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
};
static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
{
VP8Context *ctx = avctx->priv_data;
const char *error = vpx_codec_error(&ctx->encoder);
const char *detail = vpx_codec_error_detail(&ctx->encoder);
av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
if (detail)
av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);
}
static av_cold void dump_enc_cfg(AVCodecContext *avctx,
const struct vpx_codec_enc_cfg *cfg)
{
int width = -30;
int level = AV_LOG_DEBUG;
av_log(avctx, level, "vpx_codec_enc_cfg\n");
av_log(avctx, level, "generic settings\n"
" %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
" %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
width, "g_usage:", cfg->g_usage,
width, "g_threads:", cfg->g_threads,
width, "g_profile:", cfg->g_profile,
width, "g_w:", cfg->g_w,
width, "g_h:", cfg->g_h,
width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,
width, "g_error_resilient:", cfg->g_error_resilient,
width, "g_pass:", cfg->g_pass,
width, "g_lag_in_frames:", cfg->g_lag_in_frames);
av_log(avctx, level, "rate control settings\n"
" %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
" %*s%d\n %*s%p(%zu)\n %*s%u\n",
width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,
width, "rc_resize_allowed:", cfg->rc_resize_allowed,
width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,
width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
width, "rc_end_usage:", cfg->rc_end_usage,
width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
width, "rc_target_bitrate:", cfg->rc_target_bitrate);
av_log(avctx, level, "quantizer settings\n"
" %*s%u\n %*s%u\n",
width, "rc_min_quantizer:", cfg->rc_min_quantizer,
width, "rc_max_quantizer:", cfg->rc_max_quantizer);
av_log(avctx, level, "bitrate tolerance\n"
" %*s%u\n %*s%u\n",
width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);
av_log(avctx, level, "decoder buffer model\n"
" %*s%u\n %*s%u\n %*s%u\n",
width, "rc_buf_sz:", cfg->rc_buf_sz,
width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
av_log(avctx, level, "2 pass rate control settings\n"
" %*s%u\n %*s%u\n %*s%u\n",
width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,
width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
av_log(avctx, level, "keyframing settings\n"
" %*s%d\n %*s%u\n %*s%u\n",
width, "kf_mode:", cfg->kf_mode,
width, "kf_min_dist:", cfg->kf_min_dist,
width, "kf_max_dist:", cfg->kf_max_dist);
av_log(avctx, level, "\n");
}
static void coded_frame_add(void *list, struct FrameListData *cx_frame)
{
struct FrameListData **p = list;
while (*p != NULL)
p = &(*p)->next;
*p = cx_frame;
cx_frame->next = NULL;
}
static av_cold void free_coded_frame(struct FrameListData *cx_frame)
{
av_freep(&cx_frame->buf);
if (cx_frame->buf_alpha)
av_freep(&cx_frame->buf_alpha);
av_freep(&cx_frame);
}
static av_cold void free_frame_list(struct FrameListData *list)
{
struct FrameListData *p = list;
while (p) {
list = list->next;
free_coded_frame(p);
p = list;
}
}
static av_cold int codecctl_int(AVCodecContext *avctx,
enum vp8e_enc_control_id id, int val)
{
VP8Context *ctx = avctx->priv_data;
char buf[80];
int width = -30;
int res;
snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);
res = vpx_codec_control(&ctx->encoder, id, val);
if (res != VPX_CODEC_OK) {
snprintf(buf, sizeof(buf), "Failed to set %s codec control",
ctlidstr[id]);
log_encoder_error(avctx, buf);
}
return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
}
static av_cold int vp8_free(AVCodecContext *avctx)
{
VP8Context *ctx = avctx->priv_data;
vpx_codec_destroy(&ctx->encoder);
if (ctx->is_alpha)
vpx_codec_destroy(&ctx->encoder_alpha);
av_freep(&ctx->twopass_stats.buf);
av_freep(&avctx->coded_frame);
av_freep(&avctx->stats_out);
free_frame_list(ctx->coded_frame_list);
return 0;
}
static av_cold int vpx_init(AVCodecContext *avctx,
const struct vpx_codec_iface *iface)
{
VP8Context *ctx = avctx->priv_data;
struct vpx_codec_enc_cfg enccfg;
struct vpx_codec_enc_cfg enccfg_alpha;
vpx_codec_flags_t flags = (avctx->flags & CODEC_FLAG_PSNR) ? VPX_CODEC_USE_PSNR : 0;
int res;
av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P)
ctx->is_alpha = 1;
if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
vpx_codec_err_to_string(res));
return AVERROR(EINVAL);
}
if(!avctx->bit_rate)
if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) {
av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n");
return AVERROR(EINVAL);
}
dump_enc_cfg(avctx, &enccfg);
enccfg.g_w = avctx->width;
enccfg.g_h = avctx->height;
enccfg.g_timebase.num = avctx->time_base.num;
enccfg.g_timebase.den = avctx->time_base.den;
enccfg.g_threads = avctx->thread_count;
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.g_pass = VPX_RC_LAST_PASS;
else
enccfg.g_pass = VPX_RC_ONE_PASS;
if (avctx->rc_min_rate == avctx->rc_max_rate &&
avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate)
enccfg.rc_end_usage = VPX_CBR;
else if (ctx->crf)
enccfg.rc_end_usage = VPX_CQ;
if (avctx->bit_rate) {
enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
AV_ROUND_NEAR_INF);
} else {
if (enccfg.rc_end_usage == VPX_CQ) {
enccfg.rc_target_bitrate = 1000000;
} else {
avctx->bit_rate = enccfg.rc_target_bitrate * 1000;
av_log(avctx, AV_LOG_WARNING,
"Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n",
enccfg.rc_target_bitrate);
}
}
if (avctx->qmin >= 0)
enccfg.rc_min_quantizer = avctx->qmin;
if (avctx->qmax > 0)
enccfg.rc_max_quantizer = avctx->qmax;
if (enccfg.rc_end_usage == VPX_CQ) {
if (ctx->crf < enccfg.rc_min_quantizer || ctx->crf > enccfg.rc_max_quantizer) {
av_log(avctx, AV_LOG_ERROR,
"CQ level must be between minimum and maximum quantizer value (%d-%d)\n",
enccfg.rc_min_quantizer, enccfg.rc_max_quantizer);
return AVERROR(EINVAL);
}
}
enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
//0-100 (0 => CBR, 100 => VBR)
enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);
if (avctx->bit_rate)
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;
enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);
//_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;
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;
else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
int decode_size;
if (!avctx->stats_in) {
av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
return AVERROR_INVALIDDATA;
}
ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;
ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
if (!ctx->twopass_stats.buf) {
av_log(avctx, AV_LOG_ERROR,
"Stat buffer alloc (%zu bytes) failed\n",
ctx->twopass_stats.sz);
return AVERROR(ENOMEM);
}
decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
ctx->twopass_stats.sz);
if (decode_size < 0) {
av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
return AVERROR_INVALIDDATA;
}
ctx->twopass_stats.sz = decode_size;
enccfg.rc_twopass_stats_in = ctx->twopass_stats;
}
/* 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 || ctx->flags & VP8F_ERROR_RESILIENT;
dump_enc_cfg(avctx, &enccfg);
/* Construct Encoder Context */
res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, flags);
if (res != VPX_CODEC_OK) {
log_encoder_error(avctx, "Failed to initialize encoder");
return AVERROR(EINVAL);
}
if (ctx->is_alpha) {
enccfg_alpha = enccfg;
res = vpx_codec_enc_init(&ctx->encoder_alpha, iface, &enccfg_alpha, flags);
if (res != VPX_CODEC_OK) {
log_encoder_error(avctx, "Failed to initialize alpha encoder");
return AVERROR(EINVAL);
}
}
//codec control failures are currently treated only as warnings
av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
if (ctx->cpu_used != INT_MIN)
codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);
if (ctx->flags & VP8F_AUTO_ALT_REF)
ctx->auto_alt_ref = 1;
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);
codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);
if (ctx->max_intra_rate >= 0)
codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);
av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
//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,
(unsigned char*)1);
if (ctx->is_alpha)
vpx_img_wrap(&ctx->rawimg_alpha, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
(unsigned char*)1);
avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame) {
av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
vp8_free(avctx);
return AVERROR(ENOMEM);
}
return 0;
}
static inline void cx_pktcpy(struct FrameListData *dst,
const struct vpx_codec_cx_pkt *src,
const struct vpx_codec_cx_pkt *src_alpha,
VP8Context *ctx)
{
dst->pts = src->data.frame.pts;
dst->duration = src->data.frame.duration;
dst->flags = src->data.frame.flags;
dst->sz = src->data.frame.sz;
dst->buf = src->data.frame.buf;
dst->have_sse = 0;
/* For alt-ref frame, don't store PSNR or increment frame_number */
if (!(dst->flags & VPX_FRAME_IS_INVISIBLE)) {
dst->frame_number = ++ctx->frame_number;
dst->have_sse = ctx->have_sse;
if (ctx->have_sse) {
/* associate last-seen SSE to the frame. */
/* Transfers ownership from ctx to dst. */
/* WARNING! This makes the assumption that PSNR_PKT comes
just before the frame it refers to! */
memcpy(dst->sse, ctx->sse, sizeof(dst->sse));
ctx->have_sse = 0;
}
} else {
dst->frame_number = -1; /* sanity marker */
}
if (src_alpha) {
dst->buf_alpha = src_alpha->data.frame.buf;
dst->sz_alpha = src_alpha->data.frame.sz;
}
else {
dst->buf_alpha = NULL;
dst->sz_alpha = 0;
}
}
/**
* Store coded frame information in format suitable for return from encode2().
*
* Write information from @a cx_frame to @a pkt
* @return packet data size on success
* @return a negative AVERROR on error
*/
static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
AVPacket *pkt, AVFrame *coded_frame)
{
int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
uint8_t *side_data;
if (ret >= 0) {
memcpy(pkt->data, cx_frame->buf, pkt->size);
pkt->pts = pkt->dts = cx_frame->pts;
coded_frame->pts = cx_frame->pts;
coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
if (coded_frame->key_frame) {
coded_frame->pict_type = AV_PICTURE_TYPE_I;
pkt->flags |= AV_PKT_FLAG_KEY;
} else
coded_frame->pict_type = AV_PICTURE_TYPE_P;
if (cx_frame->have_sse) {
int i;
/* Beware of the Y/U/V/all order! */
coded_frame->error[0] = cx_frame->sse[1];
coded_frame->error[1] = cx_frame->sse[2];
coded_frame->error[2] = cx_frame->sse[3];
coded_frame->error[3] = 0; // alpha
for (i = 0; i < 4; ++i) {
avctx->error[i] += coded_frame->error[i];
}
cx_frame->have_sse = 0;
}
if (cx_frame->sz_alpha > 0) {
side_data = av_packet_new_side_data(pkt,
AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
cx_frame->sz_alpha + 8);
if(side_data == NULL) {
av_free_packet(pkt);
av_free(pkt);
return AVERROR(ENOMEM);
}
AV_WB64(side_data, 1);
memcpy(side_data + 8, cx_frame->buf_alpha, cx_frame->sz_alpha);
}
} else {
return ret;
}
return pkt->size;
}
/**
* Queue multiple output frames from the encoder, returning the front-most.
* In cases where vpx_codec_get_cx_data() returns more than 1 frame append
* the frame queue. Return the head frame if available.
* @return Stored frame size
* @return AVERROR(EINVAL) on output size error
* @return AVERROR(ENOMEM) on coded frame queue data allocation error
*/
static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
AVFrame *coded_frame)
{
VP8Context *ctx = avctx->priv_data;
const struct vpx_codec_cx_pkt *pkt;
const struct vpx_codec_cx_pkt *pkt_alpha = NULL;
const void *iter = NULL;
const void *iter_alpha = NULL;
int size = 0;
if (ctx->coded_frame_list) {
struct FrameListData *cx_frame = ctx->coded_frame_list;
/* return the leading frame if we've already begun queueing */
size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
if (size < 0)
return size;
ctx->coded_frame_list = cx_frame->next;
free_coded_frame(cx_frame);
}
/* consume all available output from the encoder before returning. buffers
are only good through the next vpx_codec call */
while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter)) &&
(!ctx->is_alpha ||
(ctx->is_alpha && (pkt_alpha = vpx_codec_get_cx_data(&ctx->encoder_alpha, &iter_alpha))))) {
switch (pkt->kind) {
case VPX_CODEC_CX_FRAME_PKT:
if (!size) {
struct FrameListData cx_frame;
/* avoid storing the frame when the list is empty and we haven't yet
provided a frame for output */
av_assert0(!ctx->coded_frame_list);
cx_pktcpy(&cx_frame, pkt, pkt_alpha, ctx);
size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
if (size < 0)
return size;
} else {
struct FrameListData *cx_frame =
av_malloc(sizeof(struct FrameListData));
if (!cx_frame) {
av_log(avctx, AV_LOG_ERROR,
"Frame queue element alloc failed\n");
return AVERROR(ENOMEM);
}
cx_pktcpy(cx_frame, pkt, pkt_alpha, ctx);
cx_frame->buf = av_malloc(cx_frame->sz);
if (!cx_frame->buf) {
av_log(avctx, AV_LOG_ERROR,
"Data buffer alloc (%zu bytes) failed\n",
cx_frame->sz);
av_free(cx_frame);
return AVERROR(ENOMEM);
}
memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
if (ctx->is_alpha) {
cx_frame->buf_alpha = av_malloc(cx_frame->sz_alpha);
if (!cx_frame->buf_alpha) {
av_log(avctx, AV_LOG_ERROR,
"Data buffer alloc (%zu bytes) failed\n",
cx_frame->sz_alpha);
av_free(cx_frame);
return AVERROR(ENOMEM);
}
memcpy(cx_frame->buf_alpha, pkt_alpha->data.frame.buf, pkt_alpha->data.frame.sz);
}
coded_frame_add(&ctx->coded_frame_list, cx_frame);
}
break;
case VPX_CODEC_STATS_PKT: {
struct vpx_fixed_buf *stats = &ctx->twopass_stats;
stats->buf = av_realloc_f(stats->buf, 1,
stats->sz + pkt->data.twopass_stats.sz);
if (!stats->buf) {
av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
return AVERROR(ENOMEM);
}
memcpy((uint8_t*)stats->buf + stats->sz,
pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
stats->sz += pkt->data.twopass_stats.sz;
break;
}
case VPX_CODEC_PSNR_PKT:
av_assert0(!ctx->have_sse);
ctx->sse[0] = pkt->data.psnr.sse[0];
ctx->sse[1] = pkt->data.psnr.sse[1];
ctx->sse[2] = pkt->data.psnr.sse[2];
ctx->sse[3] = pkt->data.psnr.sse[3];
ctx->have_sse = 1;
break;
case VPX_CODEC_CUSTOM_PKT:
//ignore unsupported/unrecognized packet types
break;
}
}
return size;
}
static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
VP8Context *ctx = avctx->priv_data;
struct vpx_image *rawimg = NULL;
struct vpx_image *rawimg_alpha = NULL;
int64_t timestamp = 0;
int res, coded_size;
vpx_enc_frame_flags_t flags = 0;
if (frame) {
rawimg = &ctx->rawimg;
rawimg->planes[VPX_PLANE_Y] = frame->data[0];
rawimg->planes[VPX_PLANE_U] = frame->data[1];
rawimg->planes[VPX_PLANE_V] = frame->data[2];
rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
if (ctx->is_alpha) {
uint8_t *u_plane, *v_plane;
rawimg_alpha = &ctx->rawimg_alpha;
rawimg_alpha->planes[VPX_PLANE_Y] = frame->data[3];
u_plane = av_malloc(frame->linesize[1] * frame->height);
memset(u_plane, 0x80, frame->linesize[1] * frame->height);
rawimg_alpha->planes[VPX_PLANE_U] = u_plane;
v_plane = av_malloc(frame->linesize[2] * frame->height);
memset(v_plane, 0x80, frame->linesize[2] * frame->height);
rawimg_alpha->planes[VPX_PLANE_V] = v_plane;
}
timestamp = frame->pts;
if (frame->pict_type == AV_PICTURE_TYPE_I)
flags |= VPX_EFLAG_FORCE_KF;
}
res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
avctx->ticks_per_frame, flags, ctx->deadline);
if (res != VPX_CODEC_OK) {
log_encoder_error(avctx, "Error encoding frame");
return AVERROR_INVALIDDATA;
}
if (ctx->is_alpha) {
res = vpx_codec_encode(&ctx->encoder_alpha, rawimg_alpha, timestamp,
avctx->ticks_per_frame, flags, ctx->deadline);
if (res != VPX_CODEC_OK) {
log_encoder_error(avctx, "Error encoding alpha frame");
return AVERROR_INVALIDDATA;
}
}
coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
avctx->stats_out = av_malloc(b64_size);
if (!avctx->stats_out) {
av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
b64_size);
return AVERROR(ENOMEM);
}
av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
ctx->twopass_stats.sz);
}
if (rawimg_alpha) {
av_free(rawimg_alpha->planes[VPX_PLANE_U]);
av_free(rawimg_alpha->planes[VPX_PLANE_V]);
}
*got_packet = !!coded_size;
return 0;
}
#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, {.i64 = 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, {.i64 = -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, {.i64 = -1}, -1, INT_MAX, VE},
{ "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
{ "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
{ "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, "arnr_type"},
{ "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" },
{ "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" },
{ "centered", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" },
{ "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
{ "best", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
{ "good", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
{ "realtime", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME}, 0, 0, VE, "quality"},
{ "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"},
{ "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE},
#ifdef VPX_ERROR_RESILIENT_DEFAULT
{ "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = 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, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
#endif
{"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 3}, -16, 16, VE},
{"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
{"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"},
{"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"},
{"altref", "enable use of alternate reference frames (VP8/2-pass only)", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_AUTO_ALT_REF}, INT_MIN, INT_MAX, VE, "flags"},
{"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE},
{"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE},
{"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE},
{"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.i64 = 25}, 0, 25, VE},
{ "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE },
{ NULL }
};
static const AVCodecDefault defaults[] = {
{ "qmin", "-1" },
{ "qmax", "-1" },
{ "g", "-1" },
{ "keyint_min", "-1" },
{ NULL },
};
#if CONFIG_LIBVPX_VP8_ENCODER
static av_cold int vp8_init(AVCodecContext *avctx)
{
return vpx_init(avctx, &vpx_codec_vp8_cx_algo);
}
static const AVClass class_vp8 = {
.class_name = "libvpx encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_libvpx_vp8_encoder = {
.name = "libvpx",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VP8,
.priv_data_size = sizeof(VP8Context),
.init = vp8_init,
.encode2 = vp8_encode,
.close = vp8_free,
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
.priv_class = &class_vp8,
.defaults = defaults,
};
#endif /* CONFIG_LIBVPX_VP8_ENCODER */
#if CONFIG_LIBVPX_VP9_ENCODER
static av_cold int vp9_init(AVCodecContext *avctx)
{
return vpx_init(avctx, &vpx_codec_vp9_cx_algo);
}
static const AVClass class_vp9 = {
.class_name = "libvpx encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_libvpx_vp9_encoder = {
.name = "libvpx-vp9",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VP9,
.priv_data_size = sizeof(VP8Context),
.init = vp9_init,
.encode2 = vp8_encode,
.close = vp8_free,
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS | CODEC_CAP_EXPERIMENTAL,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
.priv_class = &class_vp9,
.defaults = defaults,
};
#endif /* CONFIG_LIBVPX_VP9_ENCODER */
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