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mpv/video/decode/vd_lavc.c
wm4 0a0bb9059f video: switch from using display aspect to sample aspect 
MPlayer traditionally always used the display aspect ratio, e.g. 16:9,
while FFmpeg uses the sample (aka pixel) aspect ratio.

Both have a bunch of advantages and disadvantages. Actually, it seems
using sample aspect ratio is generally nicer. The main reason for the
change is making mpv closer to how FFmpeg works in order to make life
easier. It's also nice that everything uses integer fractions instead
of floats now (except --video-aspect option/property).

Note that there is at least 1 user-visible change: vf_dsize now does
not set the display size, only the display aspect ratio. This is
because the image_params d_w/d_h fields did not just set the display
aspect, but also the size (except in encoding mode).
2015-12-19 20:45:36 +01:00

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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <time.h>
#include <stdbool.h>
#include <sys/types.h>
#include <libavutil/common.h>
#include <libavutil/opt.h>
#include <libavutil/intreadwrite.h>
#include <libavutil/pixdesc.h>
#include "talloc.h"
#include "config.h"
#include "common/msg.h"
#include "options/options.h"
#include "misc/bstr.h"
#include "common/av_common.h"
#include "common/codecs.h"
#include "video/fmt-conversion.h"
#include "vd.h"
#include "video/img_format.h"
#include "video/filter/vf.h"
#include "video/decode/dec_video.h"
#include "demux/stheader.h"
#include "demux/packet.h"
#include "video/csputils.h"
#include "video/sws_utils.h"
#include "lavc.h"
#if AVPALETTE_SIZE != MP_PALETTE_SIZE
#error palette too large, adapt video/mp_image.h:MP_PALETTE_SIZE
#endif
#include "options/m_option.h"
static void init_avctx(struct dec_video *vd, const char *decoder,
struct vd_lavc_hwdec *hwdec);
static void uninit_avctx(struct dec_video *vd);
static int get_buffer2_hwdec(AVCodecContext *avctx, AVFrame *pic, int flags);
static enum AVPixelFormat get_format_hwdec(struct AVCodecContext *avctx,
const enum AVPixelFormat *pix_fmt);
#define OPT_BASE_STRUCT struct vd_lavc_params
struct vd_lavc_params {
int fast;
int show_all;
int skip_loop_filter;
int skip_idct;
int skip_frame;
int framedrop;
int threads;
int bitexact;
int check_hw_profile;
int software_fallback;
char **avopts;
};
static const struct m_opt_choice_alternatives discard_names[] = {
{"none", AVDISCARD_NONE},
{"default", AVDISCARD_DEFAULT},
{"nonref", AVDISCARD_NONREF},
{"bidir", AVDISCARD_BIDIR},
{"nonkey", AVDISCARD_NONKEY},
{"all", AVDISCARD_ALL},
{0}
};
#define OPT_DISCARD(name, field, flags) \
OPT_GENERAL(int, name, field, flags, .type = CONF_TYPE_CHOICE, \
.priv = (void *)discard_names)
const struct m_sub_options vd_lavc_conf = {
.opts = (const m_option_t[]){
OPT_FLAG("fast", fast, 0),
OPT_FLAG("show-all", show_all, 0),
OPT_DISCARD("skiploopfilter", skip_loop_filter, 0),
OPT_DISCARD("skipidct", skip_idct, 0),
OPT_DISCARD("skipframe", skip_frame, 0),
OPT_DISCARD("framedrop", framedrop, 0),
OPT_INT("threads", threads, M_OPT_MIN, .min = 0),
OPT_FLAG("bitexact", bitexact, 0),
OPT_FLAG("check-hw-profile", check_hw_profile, 0),
OPT_CHOICE_OR_INT("software-fallback", software_fallback, 0, 1, INT_MAX,
({"no", INT_MAX}, {"yes", 1})),
OPT_KEYVALUELIST("o", avopts, 0),
{0}
},
.size = sizeof(struct vd_lavc_params),
.defaults = &(const struct vd_lavc_params){
.show_all = 0,
.check_hw_profile = 1,
.software_fallback = 3,
.skip_loop_filter = AVDISCARD_DEFAULT,
.skip_idct = AVDISCARD_DEFAULT,
.skip_frame = AVDISCARD_DEFAULT,
.framedrop = AVDISCARD_NONREF,
},
};
extern const struct vd_lavc_hwdec mp_vd_lavc_vdpau;
extern const struct vd_lavc_hwdec mp_vd_lavc_videotoolbox;
extern const struct vd_lavc_hwdec mp_vd_lavc_vaapi;
extern const struct vd_lavc_hwdec mp_vd_lavc_vaapi_copy;
extern const struct vd_lavc_hwdec mp_vd_lavc_dxva2_copy;
extern const struct vd_lavc_hwdec mp_vd_lavc_rpi;
static const struct vd_lavc_hwdec *const hwdec_list[] = {
#if HAVE_RPI
&mp_vd_lavc_rpi,
#endif
#if HAVE_VDPAU_HWACCEL
&mp_vd_lavc_vdpau,
#endif
#if HAVE_VIDEOTOOLBOX_HWACCEL
&mp_vd_lavc_videotoolbox,
#endif
#if HAVE_VAAPI_HWACCEL
&mp_vd_lavc_vaapi,
&mp_vd_lavc_vaapi_copy,
#endif
#if HAVE_DXVA2_HWACCEL
&mp_vd_lavc_dxva2_copy,
#endif
NULL
};
static struct vd_lavc_hwdec *find_hwcodec(enum hwdec_type api)
{
for (int n = 0; hwdec_list[n]; n++) {
if (hwdec_list[n]->type == api)
return (struct vd_lavc_hwdec *)hwdec_list[n];
}
return NULL;
}
static bool hwdec_codec_allowed(struct dec_video *vd, const char *codec)
{
bstr s = bstr0(vd->opts->hwdec_codecs);
while (s.len) {
bstr item;
bstr_split_tok(s, ",", &item, &s);
if (bstr_equals0(item, "all") || bstr_equals0(item, codec))
return true;
}
return false;
}
static void hwdec_lock(struct lavc_ctx *ctx)
{
if (ctx->hwdec && ctx->hwdec->lock)
ctx->hwdec->lock(ctx);
}
static void hwdec_unlock(struct lavc_ctx *ctx)
{
if (ctx->hwdec && ctx->hwdec->unlock)
ctx->hwdec->unlock(ctx);
}
// Find the correct profile entry for the current codec and profile.
// Assumes the table has higher profiles first (for each codec).
const struct hwdec_profile_entry *hwdec_find_profile(
struct lavc_ctx *ctx, const struct hwdec_profile_entry *table)
{
assert(AV_CODEC_ID_NONE == 0);
struct vd_lavc_params *lavc_param = ctx->opts->vd_lavc_params;
enum AVCodecID codec = ctx->avctx->codec_id;
int profile = ctx->avctx->profile;
// Assume nobody cares about these aspects of the profile
if (codec == AV_CODEC_ID_H264) {
if (profile == FF_PROFILE_H264_CONSTRAINED_BASELINE)
profile = FF_PROFILE_H264_MAIN;
}
for (int n = 0; table[n].av_codec; n++) {
if (table[n].av_codec == codec) {
if (table[n].ff_profile == profile ||
!lavc_param->check_hw_profile)
return &table[n];
}
}
return NULL;
}
// Check codec support, without checking the profile.
bool hwdec_check_codec_support(const char *decoder,
const struct hwdec_profile_entry *table)
{
enum AVCodecID codec = mp_codec_to_av_codec_id(decoder);
for (int n = 0; table[n].av_codec; n++) {
if (table[n].av_codec == codec)
return true;
}
return false;
}
int hwdec_get_max_refs(struct lavc_ctx *ctx)
{
if (ctx->avctx->codec_id == AV_CODEC_ID_H264 ||
ctx->avctx->codec_id == AV_CODEC_ID_HEVC)
return 16;
return 2;
}
void hwdec_request_api(struct mp_hwdec_info *info, const char *api_name)
{
if (info && info->load_api)
info->load_api(info, api_name);
}
static int hwdec_probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
const char *decoder)
{
int r = 0;
if (hwdec->probe)
r = hwdec->probe(hwdec, info, decoder);
return r;
}
static struct vd_lavc_hwdec *probe_hwdec(struct dec_video *vd, bool autoprobe,
enum hwdec_type api,
const char *decoder)
{
MP_VERBOSE(vd, "Probing '%s'...\n", m_opt_choice_str(mp_hwdec_names, api));
struct vd_lavc_hwdec *hwdec = find_hwcodec(api);
if (!hwdec) {
MP_VERBOSE(vd, "Requested hardware decoder not compiled.\n");
return NULL;
}
int r = hwdec_probe(hwdec, vd->hwdec_info, decoder);
if (r == HWDEC_ERR_EMULATED) {
if (autoprobe)
return NULL;
// User requested this explicitly.
MP_WARN(vd, "Using emulated hardware decoding API.\n");
r = 0;
}
if (r >= 0) {
return hwdec;
} else if (r == HWDEC_ERR_NO_CODEC) {
MP_VERBOSE(vd, "Hardware decoder '%s' not found in libavcodec.\n",
decoder);
} else if (r == HWDEC_ERR_NO_CTX && !autoprobe) {
MP_WARN(vd, "VO does not support requested hardware decoder, or "
"loading it failed.\n");
}
return NULL;
}
static void uninit(struct dec_video *vd)
{
uninit_avctx(vd);
talloc_free(vd->priv);
}
static bool force_fallback(struct dec_video *vd)
{
vd_ffmpeg_ctx *ctx = vd->priv;
if (!ctx->software_fallback_decoder)
return false;
uninit_avctx(vd);
int lev = ctx->hwdec_notified ? MSGL_WARN : MSGL_V;
mp_msg(vd->log, lev, "Falling back to software decoding.\n");
const char *decoder = ctx->software_fallback_decoder;
ctx->software_fallback_decoder = NULL;
init_avctx(vd, decoder, NULL);
return true;
}
static int init(struct dec_video *vd, const char *decoder)
{
vd_ffmpeg_ctx *ctx;
ctx = vd->priv = talloc_zero(NULL, vd_ffmpeg_ctx);
ctx->log = vd->log;
ctx->opts = vd->opts;
if (bstr_endswith0(bstr0(decoder), "_vdpau")) {
MP_WARN(vd, "VDPAU decoder '%s' was requested. "
"This way of enabling hardware\ndecoding is not supported "
"anymore. Use --hwdec=vdpau instead.\nThe --hwdec-codec=... "
"option can be used to restrict which codecs are\nenabled, "
"otherwise all hardware decoding is tried for all codecs.\n",
decoder);
uninit(vd);
return 0;
}
struct vd_lavc_hwdec *hwdec = NULL;
if (hwdec_codec_allowed(vd, decoder)) {
if (vd->opts->hwdec_api == HWDEC_AUTO) {
for (int n = 0; hwdec_list[n]; n++) {
hwdec = probe_hwdec(vd, true, hwdec_list[n]->type, decoder);
if (hwdec)
break;
}
} else if (vd->opts->hwdec_api != HWDEC_NONE) {
hwdec = probe_hwdec(vd, false, vd->opts->hwdec_api, decoder);
}
} else {
MP_VERBOSE(vd, "Not trying to use hardware decoding: codec %s is not "
"on whitelist, or does not support hardware acceleration.\n",
decoder);
}
if (hwdec) {
ctx->software_fallback_decoder = talloc_strdup(ctx, decoder);
if (hwdec->get_codec)
decoder = hwdec->get_codec(ctx, decoder);
MP_VERBOSE(vd, "Trying hardware decoding.\n");
} else {
MP_VERBOSE(vd, "Using software decoding.\n");
}
init_avctx(vd, decoder, hwdec);
if (!ctx->avctx) {
force_fallback(vd);
if (!ctx->avctx) {
uninit(vd);
return 0;
}
}
return 1;
}
static void init_avctx(struct dec_video *vd, const char *decoder,
struct vd_lavc_hwdec *hwdec)
{
vd_ffmpeg_ctx *ctx = vd->priv;
struct vd_lavc_params *lavc_param = vd->opts->vd_lavc_params;
bool mp_rawvideo = false;
struct sh_stream *sh = vd->header;
assert(!ctx->avctx);
if (strcmp(decoder, "mp-rawvideo") == 0) {
mp_rawvideo = true;
decoder = "rawvideo";
}
AVCodec *lavc_codec = avcodec_find_decoder_by_name(decoder);
if (!lavc_codec)
return;
ctx->hwdec_info = vd->hwdec_info;
ctx->pix_fmt = AV_PIX_FMT_NONE;
ctx->hwdec = hwdec;
ctx->hwdec_fmt = 0;
ctx->avctx = avcodec_alloc_context3(lavc_codec);
AVCodecContext *avctx = ctx->avctx;
if (!ctx->avctx)
goto error;
avctx->opaque = vd;
avctx->codec_type = AVMEDIA_TYPE_VIDEO;
avctx->codec_id = lavc_codec->id;
avctx->refcounted_frames = 1;
ctx->pic = av_frame_alloc();
if (!ctx->pic)
goto error;
if (ctx->hwdec) {
avctx->thread_count = 1;
avctx->get_format = get_format_hwdec;
if (ctx->hwdec->allocate_image)
avctx->get_buffer2 = get_buffer2_hwdec;
if (ctx->hwdec->init(ctx) < 0)
goto error;
} else {
mp_set_avcodec_threads(vd->log, avctx, lavc_param->threads);
}
avctx->flags |= lavc_param->bitexact ? CODEC_FLAG_BITEXACT : 0;
avctx->flags2 |= lavc_param->fast ? CODEC_FLAG2_FAST : 0;
if (lavc_param->show_all) {
#ifdef CODEC_FLAG2_SHOW_ALL
avctx->flags2 |= CODEC_FLAG2_SHOW_ALL; // ffmpeg only?
#endif
#ifdef CODEC_FLAG_OUTPUT_CORRUPT
avctx->flags |= CODEC_FLAG_OUTPUT_CORRUPT; // added with Libav 10
#endif
}
avctx->skip_loop_filter = lavc_param->skip_loop_filter;
avctx->skip_idct = lavc_param->skip_idct;
avctx->skip_frame = lavc_param->skip_frame;
mp_set_avopts(vd->log, avctx, lavc_param->avopts);
// Do this after the above avopt handling in case it changes values
ctx->skip_frame = avctx->skip_frame;
avctx->codec_tag = sh->codec_tag;
avctx->coded_width = sh->video->disp_w;
avctx->coded_height = sh->video->disp_h;
avctx->bits_per_coded_sample = sh->video->bits_per_coded_sample;
mp_lavc_set_extradata(avctx, sh->extradata, sh->extradata_size);
if (mp_rawvideo) {
avctx->pix_fmt = imgfmt2pixfmt(sh->codec_tag);
avctx->codec_tag = 0;
if (avctx->pix_fmt == AV_PIX_FMT_NONE && sh->codec_tag)
MP_ERR(vd, "Image format %s not supported by lavc.\n",
mp_imgfmt_to_name(sh->codec_tag));
}
if (sh->lav_headers)
mp_copy_lav_codec_headers(avctx, sh->lav_headers);
/* open it */
if (avcodec_open2(avctx, lavc_codec, NULL) < 0)
goto error;
return;
error:
MP_ERR(vd, "Could not open codec.\n");
uninit_avctx(vd);
}
static void reset_avctx(struct dec_video *vd)
{
vd_ffmpeg_ctx *ctx = vd->priv;
if (ctx->avctx)
avcodec_flush_buffers(ctx->avctx);
ctx->flushing = false;
}
static void uninit_avctx(struct dec_video *vd)
{
vd_ffmpeg_ctx *ctx = vd->priv;
AVCodecContext *avctx = ctx->avctx;
if (avctx) {
if (avctx->codec && avcodec_close(avctx) < 0)
MP_ERR(vd, "Could not close codec.\n");
av_freep(&avctx->extradata);
}
if (ctx->hwdec && ctx->hwdec->uninit)
ctx->hwdec->uninit(ctx);
ctx->hwdec = NULL;
av_freep(&ctx->avctx);
av_frame_free(&ctx->pic);
ctx->flushing = false;
ctx->hwdec_failed = false;
ctx->hwdec_fail_count = 0;
}
static void update_image_params(struct dec_video *vd, AVFrame *frame,
struct mp_image_params *out_params)
{
vd_ffmpeg_ctx *ctx = vd->priv;
struct MPOpts *opts = ctx->opts;
int width = frame->width;
int height = frame->height;
int pix_fmt = frame->format;
if (pix_fmt != ctx->pix_fmt) {
ctx->pix_fmt = pix_fmt;
ctx->best_csp = pixfmt2imgfmt(pix_fmt);
if (!ctx->best_csp)
MP_ERR(vd, "lavc pixel format %s not supported.\n",
av_get_pix_fmt_name(pix_fmt));
}
*out_params = (struct mp_image_params) {
.imgfmt = ctx->best_csp,
.w = width,
.h = height,
.p_w = frame->sample_aspect_ratio.num,
.p_h = frame->sample_aspect_ratio.den,
.colorspace = avcol_spc_to_mp_csp(ctx->avctx->colorspace),
.colorlevels = avcol_range_to_mp_csp_levels(ctx->avctx->color_range),
.primaries = avcol_pri_to_mp_csp_prim(ctx->avctx->color_primaries),
.gamma = avcol_trc_to_mp_csp_trc(ctx->avctx->color_trc),
.chroma_location =
avchroma_location_to_mp(ctx->avctx->chroma_sample_location),
.rotate = vd->header->video->rotate,
.stereo_in = vd->header->video->stereo_mode,
};
if (opts->video_rotate < 0) {
out_params->rotate = 0;
} else {
out_params->rotate = (out_params->rotate + opts->video_rotate) % 360;
}
out_params->stereo_out = opts->video_stereo_mode;
}
static enum AVPixelFormat get_format_hwdec(struct AVCodecContext *avctx,
const enum AVPixelFormat *fmt)
{
struct dec_video *vd = avctx->opaque;
vd_ffmpeg_ctx *ctx = vd->priv;
MP_VERBOSE(vd, "Pixel formats supported by decoder:");
for (int i = 0; fmt[i] != AV_PIX_FMT_NONE; i++)
MP_VERBOSE(vd, " %s", av_get_pix_fmt_name(fmt[i]));
MP_VERBOSE(vd, "\n");
assert(ctx->hwdec);
ctx->hwdec_request_reinit |= ctx->hwdec_failed;
ctx->hwdec_failed = false;
if (ctx->hwdec->image_format) {
for (int i = 0; fmt[i] != AV_PIX_FMT_NONE; i++) {
if (ctx->hwdec->image_format == pixfmt2imgfmt(fmt[i])) {
// There could be more reasons for a change, and it's possible
// that we miss some. (Might also depend on the hwaccel type.)
bool change =
ctx->hwdec_w != avctx->coded_width ||
ctx->hwdec_h != avctx->coded_height ||
ctx->hwdec_fmt != ctx->hwdec->image_format ||
ctx->hwdec_profile != avctx->profile ||
ctx->hwdec_request_reinit;
ctx->hwdec_w = avctx->coded_width;
ctx->hwdec_h = avctx->coded_height;
ctx->hwdec_fmt = ctx->hwdec->image_format;
ctx->hwdec_profile = avctx->profile;
ctx->hwdec_request_reinit = false;
if (change) {
if (ctx->hwdec->init_decoder(ctx, ctx->hwdec_w, ctx->hwdec_h) < 0)
{
ctx->hwdec_fmt = 0;
break;
}
}
return fmt[i];
}
}
}
ctx->hwdec_failed = true;
for (int i = 0; fmt[i] != AV_PIX_FMT_NONE; i++) {
const AVPixFmtDescriptor *d = av_pix_fmt_desc_get(fmt[i]);
if (d && !(d->flags & AV_PIX_FMT_FLAG_HWACCEL))
return fmt[i];
}
return AV_PIX_FMT_NONE;
}
static int get_buffer2_hwdec(AVCodecContext *avctx, AVFrame *pic, int flags)
{
struct dec_video *vd = avctx->opaque;
vd_ffmpeg_ctx *ctx = vd->priv;
int imgfmt = pixfmt2imgfmt(pic->format);
if (!IMGFMT_IS_HWACCEL(imgfmt) || !ctx->hwdec)
ctx->hwdec_failed = true;
/* Hardware decoding failed, and we will trigger a proper fallback later
* when returning from the decode call. (We are forcing complete
* reinitialization later to reset the thread count properly.)
*/
if (ctx->hwdec_failed)
return avcodec_default_get_buffer2(avctx, pic, flags);
// We expect it to use the exact size used to create the hw decoder in
// get_format_hwdec(). For cropped video, this is expected to be the
// uncropped size (usually coded_width/coded_height).
int w = pic->width;
int h = pic->height;
if (imgfmt != ctx->hwdec_fmt && w != ctx->hwdec_w && h != ctx->hwdec_h)
return -1;
struct mp_image *mpi = ctx->hwdec->allocate_image(ctx, w, h);
if (!mpi)
return -1;
for (int i = 0; i < 4; i++) {
pic->data[i] = mpi->planes[i];
pic->buf[i] = mpi->bufs[i];
mpi->bufs[i] = NULL;
}
talloc_free(mpi);
return 0;
}
static void decode(struct dec_video *vd, struct demux_packet *packet,
int flags, struct mp_image **out_image)
{
int got_picture = 0;
int ret;
vd_ffmpeg_ctx *ctx = vd->priv;
AVCodecContext *avctx = ctx->avctx;
struct vd_lavc_params *opts = ctx->opts->vd_lavc_params;
AVPacket pkt;
if (!avctx)
return;
if (flags) {
// hr-seek framedrop vs. normal framedrop
avctx->skip_frame = flags == 2 ? AVDISCARD_NONREF : opts->framedrop;
} else {
// normal playback
avctx->skip_frame = ctx->skip_frame;
}
mp_set_av_packet(&pkt, packet, NULL);
ctx->flushing |= !pkt.data;
// Reset decoder if hw state got reset, or new data comes during flushing.
if (ctx->hwdec_request_reinit || (pkt.data && ctx->flushing))
reset_avctx(vd);
hwdec_lock(ctx);
ret = avcodec_decode_video2(avctx, ctx->pic, &got_picture, &pkt);
hwdec_unlock(ctx);
// Reset decoder if it was fully flushed. Caller might send more flush
// packets, or even new actual packets.
if (ctx->flushing && (ret < 0 || !got_picture))
reset_avctx(vd);
if (ret < 0) {
MP_WARN(vd, "Error while decoding frame!\n");
if (ctx->hwdec) {
ctx->hwdec_fail_count += 1;
if (ctx->hwdec_fail_count >= opts->software_fallback)
ctx->hwdec_failed = true;
}
return;
}
if (ctx->hwdec && ctx->hwdec_failed) {
av_frame_unref(ctx->pic);
return;
}
// Skipped frame, or delayed output due to multithreaded decoding.
if (!got_picture)
return;
ctx->hwdec_fail_count = 0;
struct mp_image_params params;
update_image_params(vd, ctx->pic, &params);
vd->codec_pts = mp_pts_from_av(ctx->pic->pkt_pts, NULL);
vd->codec_dts = mp_pts_from_av(ctx->pic->pkt_dts, NULL);
struct mp_image *mpi = mp_image_from_av_frame(ctx->pic);
av_frame_unref(ctx->pic);
if (!mpi)
return;
assert(mpi->planes[0] || mpi->planes[3]);
mp_image_set_params(mpi, &params);
if (ctx->hwdec && ctx->hwdec->process_image)
mpi = ctx->hwdec->process_image(ctx, mpi);
*out_image = mp_img_swap_to_native(mpi);
}
static struct mp_image *decode_with_fallback(struct dec_video *vd,
struct demux_packet *packet, int flags)
{
vd_ffmpeg_ctx *ctx = vd->priv;
if (!ctx->avctx)
return NULL;
struct mp_image *mpi = NULL;
decode(vd, packet, flags, &mpi);
if (ctx->hwdec_failed) {
// Failed hardware decoding? Try again in software.
if (force_fallback(vd) && ctx->avctx)
decode(vd, packet, flags, &mpi);
}
if (mpi && !ctx->hwdec_notified && vd->opts->hwdec_api != HWDEC_NONE) {
if (ctx->hwdec) {
MP_INFO(vd, "Using hardware decoding (%s).\n",
m_opt_choice_str(mp_hwdec_names, ctx->hwdec->type));
} else {
MP_INFO(vd, "Using software decoding.\n");
}
ctx->hwdec_notified = true;
}
return mpi;
}
static int control(struct dec_video *vd, int cmd, void *arg)
{
vd_ffmpeg_ctx *ctx = vd->priv;
switch (cmd) {
case VDCTRL_RESET:
reset_avctx(vd);
return CONTROL_TRUE;
case VDCTRL_QUERY_UNSEEN_FRAMES: {
AVCodecContext *avctx = ctx->avctx;
if (!avctx)
break;
if (ctx->hwdec && ctx->hwdec->type == HWDEC_RPI)
break; // MMAL has arbitrary buffering, thus unknown
int delay = avctx->has_b_frames;
assert(delay >= 0);
if (avctx->active_thread_type & FF_THREAD_FRAME)
delay += avctx->thread_count - 1;
*(int *)arg = delay;
return CONTROL_TRUE;
}
case VDCTRL_GET_HWDEC: {
int hwdec = ctx->hwdec ? ctx->hwdec->type : 0;
if (!ctx->software_fallback_decoder)
hwdec = 0;
*(int *)arg = hwdec;
return CONTROL_TRUE;
}
case VDCTRL_FORCE_HWDEC_FALLBACK:
if (force_fallback(vd))
return ctx->avctx ? CONTROL_OK : CONTROL_ERROR;
return CONTROL_FALSE;
}
return CONTROL_UNKNOWN;
}
static void add_decoders(struct mp_decoder_list *list)
{
mp_add_lavc_decoders(list, AVMEDIA_TYPE_VIDEO);
mp_add_decoder(list, "lavc", "mp-rawvideo", "mp-rawvideo",
"raw video");
}
const struct vd_functions mpcodecs_vd_ffmpeg = {
.name = "lavc",
.add_decoders = add_decoders,
.init = init,
.uninit = uninit,
.control = control,
.decode = decode_with_fallback,
};
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