mirror of https://github.com/FFmpeg/FFmpeg.git
Patch by James Zern, Google, Inc. Originally committed as revision 23449 to svn://svn.ffmpeg.org/ffmpeg/trunkoldabi
James Zern
15 years ago
committed by
Carl Eugen Hoyos
parent
f1dfaa7a82
commit
ee0e91462c
7 changed files with 498 additions and 6 deletions
@ -0,0 +1,489 @@ |
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/*
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* Copyright (c) 2010, Google, Inc. |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* VP8 encoder support via libvpx |
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*/ |
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#define VPX_DISABLE_CTRL_TYPECHECKS 1 |
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#define VPX_CODEC_DISABLE_COMPAT 1 |
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#include <vpx/vpx_encoder.h> |
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#include <vpx/vp8cx.h> |
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#include "avcodec.h" |
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#include "libavutil/base64.h" |
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/**
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* Portion of struct vpx_codec_cx_pkt from vpx_encoder.h. |
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* One encoded frame returned from the library. |
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*/ |
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struct FrameListData { |
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void *buf; /**≤ compressed data buffer */ |
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size_t sz; /**≤ length of compressed data */ |
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int64_t pts; /**≤ time stamp to show frame
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(in timebase units) */ |
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unsigned long duration; /**≤ duration to show frame
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(in timebase units) */ |
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uint32_t flags; /**≤ flags for this frame */ |
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struct FrameListData *next; |
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}; |
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typedef struct VP8EncoderContext { |
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struct vpx_codec_ctx encoder; |
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struct vpx_image rawimg; |
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struct vpx_fixed_buf twopass_stats; |
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unsigned long deadline; //i.e., RT/GOOD/BEST
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struct FrameListData *coded_frame_list; |
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} VP8Context; |
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/** String mappings for enum vp8e_enc_control_id */ |
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static const char *ctlidstr[] = { |
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[VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY", |
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[VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE", |
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[VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE", |
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[VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP", |
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[VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP", |
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[VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE", |
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[VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED", |
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[VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF", |
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[VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY", |
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[VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS", |
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[VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD", |
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[VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS", |
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[VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER", |
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[VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES", |
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[VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH", |
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[VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE", |
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}; |
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static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc) |
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{ |
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VP8Context *ctx = avctx->priv_data; |
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const char *error = vpx_codec_error(&ctx->encoder); |
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const char *detail = vpx_codec_error_detail(&ctx->encoder); |
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av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error); |
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if (detail) |
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av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail); |
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} |
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static av_cold void dump_enc_cfg(AVCodecContext *avctx, |
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const struct vpx_codec_enc_cfg *cfg) |
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{ |
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int width = -30; |
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int level = AV_LOG_DEBUG; |
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av_log(avctx, level, "vpx_codec_enc_cfg\n"); |
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av_log(avctx, level, "generic settings\n" |
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" %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n" |
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" %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n", |
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width, "g_usage:", cfg->g_usage, |
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width, "g_threads:", cfg->g_threads, |
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width, "g_profile:", cfg->g_profile, |
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width, "g_w:", cfg->g_w, |
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width, "g_h:", cfg->g_h, |
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width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den, |
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width, "g_error_resilient:", cfg->g_error_resilient, |
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width, "g_pass:", cfg->g_pass, |
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width, "g_lag_in_frames:", cfg->g_lag_in_frames); |
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av_log(avctx, level, "rate control settings\n" |
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" %*s%u\n %*s%u\n %*s%u\n %*s%u\n" |
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" %*s%d\n %*s%p(%zu)\n %*s%u\n", |
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width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh, |
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width, "rc_resize_allowed:", cfg->rc_resize_allowed, |
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width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh, |
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width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh, |
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width, "rc_end_usage:", cfg->rc_end_usage, |
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width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz, |
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width, "rc_target_bitrate:", cfg->rc_target_bitrate); |
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av_log(avctx, level, "quantizer settings\n" |
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" %*s%u\n %*s%u\n", |
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width, "rc_min_quantizer:", cfg->rc_min_quantizer, |
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width, "rc_max_quantizer:", cfg->rc_max_quantizer); |
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av_log(avctx, level, "bitrate tolerance\n" |
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" %*s%u\n %*s%u\n", |
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width, "rc_undershoot_pct:", cfg->rc_undershoot_pct, |
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width, "rc_overshoot_pct:", cfg->rc_overshoot_pct); |
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av_log(avctx, level, "decoder buffer model\n" |
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" %*s%u\n %*s%u\n %*s%u\n", |
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width, "rc_buf_sz:", cfg->rc_buf_sz, |
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width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz, |
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width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz); |
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av_log(avctx, level, "2 pass rate control settings\n" |
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" %*s%u\n %*s%u\n %*s%u\n", |
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width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct, |
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width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct, |
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width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct); |
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av_log(avctx, level, "keyframing settings\n" |
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" %*s%d\n %*s%u\n %*s%u\n", |
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width, "kf_mode:", cfg->kf_mode, |
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width, "kf_min_dist:", cfg->kf_min_dist, |
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width, "kf_max_dist:", cfg->kf_max_dist); |
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av_log(avctx, level, "\n"); |
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} |
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static void coded_frame_add(void *list, struct FrameListData *cx_frame) |
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{ |
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struct FrameListData **p = list; |
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while (*p != NULL) |
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p = &(*p)->next; |
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*p = cx_frame; |
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cx_frame->next = NULL; |
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} |
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static av_cold void free_coded_frame(struct FrameListData *cx_frame) |
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{ |
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av_freep(&cx_frame->buf); |
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av_freep(&cx_frame); |
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} |
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static av_cold void free_frame_list(struct FrameListData *list) |
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{ |
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struct FrameListData *p = list; |
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while (p) { |
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list = list->next; |
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free_coded_frame(p); |
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p = list; |
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} |
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} |
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static av_cold int codecctl_int(AVCodecContext *avctx, |
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enum vp8e_enc_control_id id, int val) |
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{ |
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VP8Context *ctx = avctx->priv_data; |
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char buf[80]; |
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int width = -30; |
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int res; |
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snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]); |
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av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val); |
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res = vpx_codec_control(&ctx->encoder, id, val); |
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if (res != VPX_CODEC_OK) { |
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snprintf(buf, sizeof(buf), "Failed to set %s codec control", |
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ctlidstr[id]); |
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log_encoder_error(avctx, buf); |
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} |
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return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL); |
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} |
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static av_cold int vp8_free(AVCodecContext *avctx) |
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{ |
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VP8Context *ctx = avctx->priv_data; |
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vpx_codec_destroy(&ctx->encoder); |
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av_freep(&ctx->twopass_stats.buf); |
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av_freep(&avctx->coded_frame); |
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av_freep(&avctx->stats_out); |
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free_frame_list(ctx->coded_frame_list); |
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return 0; |
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} |
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static av_cold int vp8_init(AVCodecContext *avctx) |
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{ |
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VP8Context *ctx = avctx->priv_data; |
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const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo; |
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int cpuused = 3; |
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struct vpx_codec_enc_cfg enccfg; |
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int res; |
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av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str()); |
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av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config()); |
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if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) { |
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av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n", |
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vpx_codec_err_to_string(res)); |
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return AVERROR(EINVAL); |
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} |
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dump_enc_cfg(avctx, &enccfg); |
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enccfg.g_w = avctx->width; |
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enccfg.g_h = avctx->height; |
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enccfg.g_timebase.num = avctx->time_base.num; |
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enccfg.g_timebase.den = avctx->time_base.den; |
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enccfg.g_threads = avctx->thread_count; |
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if (avctx->flags & CODEC_FLAG_PASS1) |
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enccfg.g_pass = VPX_RC_FIRST_PASS; |
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else if (avctx->flags & CODEC_FLAG_PASS2) |
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enccfg.g_pass = VPX_RC_LAST_PASS; |
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else |
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enccfg.g_pass = VPX_RC_ONE_PASS; |
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if (avctx->rc_min_rate == avctx->rc_max_rate && |
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avctx->rc_min_rate == avctx->bit_rate) |
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enccfg.rc_end_usage = VPX_CBR; |
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enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000, |
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AV_ROUND_NEAR_INF); |
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//convert [1,51] -> [0,63]
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enccfg.rc_min_quantizer = ((avctx->qmin * 5 + 1) >> 2) - 1; |
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enccfg.rc_max_quantizer = ((avctx->qmax * 5 + 1) >> 2) - 1; |
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if (avctx->keyint_min == avctx->gop_size) |
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enccfg.kf_mode = VPX_KF_FIXED; |
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//_enc_init() will balk if kf_min_dist is set in this case
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if (enccfg.kf_mode != VPX_KF_AUTO) |
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enccfg.kf_min_dist = avctx->keyint_min; |
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enccfg.kf_max_dist = avctx->gop_size; |
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if (enccfg.g_pass == VPX_RC_FIRST_PASS) |
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enccfg.g_lag_in_frames = 0; |
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else if (enccfg.g_pass == VPX_RC_LAST_PASS) { |
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int decode_size; |
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if (!avctx->stats_in) { |
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av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4; |
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ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz); |
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if (!ctx->twopass_stats.buf) { |
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av_log(avctx, AV_LOG_ERROR, |
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"Stat buffer alloc (%zu bytes) failed\n", |
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ctx->twopass_stats.sz); |
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return AVERROR(ENOMEM); |
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} |
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decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in, |
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ctx->twopass_stats.sz); |
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if (decode_size < 0) { |
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av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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ctx->twopass_stats.sz = decode_size; |
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enccfg.rc_twopass_stats_in = ctx->twopass_stats; |
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} |
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ctx->deadline = VPX_DL_GOOD_QUALITY; |
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dump_enc_cfg(avctx, &enccfg); |
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/* Construct Encoder Context */ |
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res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0); |
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if (res != VPX_CODEC_OK) { |
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log_encoder_error(avctx, "Failed to initialize encoder"); |
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return AVERROR(EINVAL); |
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} |
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//codec control failures are currently treated only as warnings
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av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n"); |
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codecctl_int(avctx, VP8E_SET_CPUUSED, cpuused); |
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codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction); |
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//provide dummy value to initialize wrapper, values will be updated each _encode()
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vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1, |
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(unsigned char*)1); |
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avctx->coded_frame = avcodec_alloc_frame(); |
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if (!avctx->coded_frame) { |
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av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n"); |
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vp8_free(avctx); |
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return AVERROR(ENOMEM); |
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} |
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return 0; |
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} |
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static inline void cx_pktcpy(struct FrameListData *dst, |
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const struct vpx_codec_cx_pkt *src) |
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{ |
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dst->pts = src->data.frame.pts; |
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dst->duration = src->data.frame.duration; |
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dst->flags = src->data.frame.flags; |
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dst->sz = src->data.frame.sz; |
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dst->buf = src->data.frame.buf; |
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} |
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/**
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* Store coded frame information in format suitable for return from encode(). |
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* |
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* Write buffer information from @a cx_frame to @a buf & @a buf_size. |
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* Timing/frame details to @a coded_frame. |
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* @return Frame size written to @a buf on success |
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* @return AVERROR(EINVAL) on error |
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*/ |
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static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame, |
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uint8_t *buf, int buf_size, AVFrame *coded_frame) |
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{ |
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if ((int) cx_frame->sz <= buf_size) { |
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buf_size = cx_frame->sz; |
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memcpy(buf, cx_frame->buf, buf_size); |
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coded_frame->pts = cx_frame->pts; |
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coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY); |
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if (coded_frame->key_frame) |
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coded_frame->pict_type = FF_I_TYPE; |
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else |
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coded_frame->pict_type = FF_P_TYPE; |
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} else { |
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av_log(avctx, AV_LOG_ERROR, |
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"Compressed frame larger than storage provided! (%zu/%d)\n", |
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cx_frame->sz, buf_size); |
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return AVERROR(EINVAL); |
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} |
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return buf_size; |
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} |
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/**
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* Queue multiple output frames from the encoder, returning the front-most. |
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* In cases where vpx_codec_get_cx_data() returns more than 1 frame append |
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* the frame queue. Return the head frame if available. |
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* @return Stored frame size |
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* @return AVERROR(EINVAL) on output size error |
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* @return AVERROR(ENOMEM) on coded frame queue data allocation error |
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*/ |
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static int queue_frames(AVCodecContext *avctx, uint8_t *buf, int buf_size, |
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AVFrame *coded_frame) |
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{ |
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VP8Context *ctx = avctx->priv_data; |
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const struct vpx_codec_cx_pkt *pkt; |
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const void *iter = NULL; |
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int size = 0; |
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if (ctx->coded_frame_list) { |
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struct FrameListData *cx_frame = ctx->coded_frame_list; |
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/* return the leading frame if we've already begun queueing */ |
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size = storeframe(avctx, cx_frame, buf, buf_size, coded_frame); |
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if (size < 0) |
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return AVERROR(EINVAL); |
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ctx->coded_frame_list = cx_frame->next; |
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free_coded_frame(cx_frame); |
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} |
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/* consume all available output from the encoder before returning. buffers
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are only good through the next vpx_codec call */ |
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while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) { |
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switch (pkt->kind) { |
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case VPX_CODEC_CX_FRAME_PKT: |
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if (!size) { |
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struct FrameListData cx_frame; |
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/* avoid storing the frame when the list is empty and we haven't yet
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provided a frame for output */ |
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assert(!ctx->coded_frame_list); |
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cx_pktcpy(&cx_frame, pkt); |
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size = storeframe(avctx, &cx_frame, buf, buf_size, coded_frame); |
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if (size < 0) |
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return AVERROR(EINVAL); |
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} else { |
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struct FrameListData *cx_frame = |
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av_malloc(sizeof(struct FrameListData)); |
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if (!cx_frame) { |
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av_log(avctx, AV_LOG_ERROR, |
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"Frame queue element alloc failed\n"); |
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return AVERROR(ENOMEM); |
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} |
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cx_pktcpy(cx_frame, pkt); |
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cx_frame->buf = av_malloc(cx_frame->sz); |
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if (!cx_frame->buf) { |
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av_log(avctx, AV_LOG_ERROR, |
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"Data buffer alloc (%zu bytes) failed\n", |
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cx_frame->sz); |
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return AVERROR(ENOMEM); |
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} |
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memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz); |
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coded_frame_add(&ctx->coded_frame_list, cx_frame); |
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} |
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break; |
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case VPX_CODEC_STATS_PKT: { |
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struct vpx_fixed_buf *stats = &ctx->twopass_stats; |
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stats->buf = av_realloc(stats->buf, |
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stats->sz + pkt->data.twopass_stats.sz); |
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if (!stats->buf) { |
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av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n"); |
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return AVERROR(ENOMEM); |
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} |
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memcpy((uint8_t*)stats->buf + stats->sz, |
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pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz); |
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stats->sz += pkt->data.twopass_stats.sz; |
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break; |
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} |
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case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
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case VPX_CODEC_CUSTOM_PKT: |
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//ignore unsupported/unrecognized packet types
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break; |
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} |
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} |
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return size; |
||||
} |
||||
|
||||
static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size, |
||||
void *data) |
||||
{ |
||||
VP8Context *ctx = avctx->priv_data; |
||||
AVFrame *frame = data; |
||||
struct vpx_image *rawimg = NULL; |
||||
int64_t timestamp = 0; |
||||
int res, coded_size; |
||||
|
||||
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]; |
||||
timestamp = frame->pts; |
||||
} |
||||
|
||||
res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp, |
||||
avctx->ticks_per_frame, 0, ctx->deadline); |
||||
if (res != VPX_CODEC_OK) { |
||||
log_encoder_error(avctx, "Error encoding frame"); |
||||
return AVERROR_INVALIDDATA; |
||||
} |
||||
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; |
||||
|
||||
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); |
||||
} |
||||
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, |
||||
.pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, |
||||
.long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"), |
||||
}; |
||||
Loading…
Reference in new issue