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lavc/hevcdec: implement decoding MV-HEVC
At most two layers are supported. Aspects of this work were sponsored by Vimeo and Meta.
This commit is contained in:
Anton Khirnov
parent
0fde9c609f
commit
14746871e1
@ -26,6 +26,7 @@ version <next>:
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- stream specifiers in fftools can now match by stream disposition
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- LCEVC enhancement data exporting in H.26x and MP4/ISOBMFF
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- LCEVC filter
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- MV-HEVC decoding
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version 7.0:
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@ -38,6 +38,51 @@ Select an operating point of a scalable AV1 bitstream (0 - 31). Default is 0.
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@end table
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@section hevc
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HEVC (AKA ITU-T H.265 or ISO/IEC 23008-2) decoder.
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The decoder supports MV-HEVC multiview streams with at most two views. Views to
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be output are selected by supplying a list of view IDs to the decoder (the
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@option{view_ids} option). This option may be set either statically before
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decoder init, or from the @code{get_format()} callback - useful for the case
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when the view count or IDs change dynamically during decoding.
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Only the base layer is decoded by default.
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Note that if you are using the @code{ffmpeg} CLI tool, you should be using view
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specifiers as documented in its manual, rather than the options documented here.
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@subsection Options
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@table @option
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@item view_ids (MV-HEVC)
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Specify a list of view IDs that should be output. This option can also be set to
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a single '-1', which will cause all views defined in the VPS to be decoded and
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output.
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@item view_ids_available (MV-HEVC)
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This option may be read by the caller to retrieve an array of view IDs available
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in the active VPS. The array is empty for single-layer video.
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The value of this option is guaranteed to be accurate when read from the
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@code{get_format()} callback. It may also be set at other times (e.g. after
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opening the decoder), but the value is informational only and may be incorrect
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(e.g. when the stream contains multiple distinct VPS NALUs).
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@item view_pos_available (MV-HEVC)
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This option may be read by the caller to retrieve an array of view positions
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(left, right, or unspecified) available in the active VPS, as
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@code{AVStereo3DView} values. When the array is available, its elements apply to
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the corresponding elements of @option{view_ids_available}, i.e.
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@code{view_pos_available[i]} contains the position of view with ID
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@code{view_ids_available[i]}.
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Same validity restrictions as for @option{view_ids_available} apply to
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this option.
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@end table
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@section rawvideo
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Raw video decoder.
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@ -34,6 +34,7 @@
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/stereo3d.h"
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#include "libavutil/timecode.h"
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#include "aom_film_grain.h"
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@ -417,6 +418,109 @@ static int export_stream_params_from_sei(HEVCContext *s)
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return 0;
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}
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static int export_multilayer(HEVCContext *s, const HEVCVPS *vps)
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{
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const HEVCSEITDRDI *tdrdi = &s->sei.tdrdi;
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av_freep(&s->view_ids_available);
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s->nb_view_ids_available = 0;
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av_freep(&s->view_pos_available);
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s->nb_view_pos_available = 0;
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// don't export anything in the trivial case (1 layer, view id=0)
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if (vps->nb_layers < 2 && !vps->view_id[0])
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return 0;
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s->view_ids_available = av_calloc(vps->nb_layers, sizeof(*s->view_ids_available));
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if (!s->view_ids_available)
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return AVERROR(ENOMEM);
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if (tdrdi->num_ref_displays) {
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s->view_pos_available = av_calloc(vps->nb_layers, sizeof(*s->view_pos_available));
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if (!s->view_pos_available)
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return AVERROR(ENOMEM);
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}
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for (int i = 0; i < vps->nb_layers; i++) {
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s->view_ids_available[i] = vps->view_id[i];
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if (s->view_pos_available) {
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s->view_pos_available[i] = vps->view_id[i] == tdrdi->left_view_id[0] ?
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AV_STEREO3D_VIEW_LEFT :
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vps->view_id[i] == tdrdi->right_view_id[0] ?
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AV_STEREO3D_VIEW_RIGHT : AV_STEREO3D_VIEW_UNSPEC;
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}
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}
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s->nb_view_ids_available = vps->nb_layers;
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s->nb_view_pos_available = s->view_pos_available ? vps->nb_layers : 0;
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return 0;
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}
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static int setup_multilayer(HEVCContext *s, const HEVCVPS *vps)
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{
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unsigned layers_active_output = 0, highest_layer;
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s->layers_active_output = 1;
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s->layers_active_decode = 1;
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// nothing requested - decode base layer only
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if (!s->nb_view_ids)
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return 0;
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if (s->nb_view_ids == 1 && s->view_ids[0] == -1) {
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layers_active_output = (1 << vps->nb_layers) - 1;
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} else {
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for (int i = 0; i < s->nb_view_ids; i++) {
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int view_id = s->view_ids[i];
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int layer_idx = -1;
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if (view_id < 0) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Invalid view ID requested: %d\n", view_id);
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return AVERROR(EINVAL);
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}
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for (int j = 0; j < vps->nb_layers; j++) {
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if (vps->view_id[j] == view_id) {
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layer_idx = j;
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break;
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}
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}
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if (layer_idx < 0) {
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av_log(s->avctx, AV_LOG_ERROR,
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"View ID %d not present in VPS\n", view_id);
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return AVERROR(EINVAL);
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}
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layers_active_output |= 1 << layer_idx;
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}
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}
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if (!layers_active_output) {
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av_log(s->avctx, AV_LOG_ERROR, "No layers selected\n");
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return AVERROR_BUG;
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}
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highest_layer = ff_log2(layers_active_output);
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if (highest_layer >= FF_ARRAY_ELEMS(s->layers)) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Too many layers requested: %u\n", layers_active_output);
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return AVERROR(EINVAL);
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}
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/* Assume a higher layer depends on all the lower ones.
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* This is enforced in VPS parsing currently, this logic will need
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* to be changed if we want to support more complex dependency structures.
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*/
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s->layers_active_decode = (1 << (highest_layer + 1)) - 1;
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s->layers_active_output = layers_active_output;
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av_log(s->avctx, AV_LOG_DEBUG, "decode/output layers: %x/%x\n",
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s->layers_active_decode, s->layers_active_output);
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return 0;
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}
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static enum AVPixelFormat get_format(HEVCContext *s, const HEVCSPS *sps)
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{
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#define HWACCEL_MAX (CONFIG_HEVC_DXVA2_HWACCEL + \
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@ -428,6 +532,7 @@ static enum AVPixelFormat get_format(HEVCContext *s, const HEVCSPS *sps)
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CONFIG_HEVC_VDPAU_HWACCEL + \
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CONFIG_HEVC_VULKAN_HWACCEL)
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enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
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int ret;
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switch (sps->pix_fmt) {
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case AV_PIX_FMT_YUV420P:
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@ -547,7 +652,23 @@ static enum AVPixelFormat get_format(HEVCContext *s, const HEVCSPS *sps)
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*fmt++ = sps->pix_fmt;
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*fmt = AV_PIX_FMT_NONE;
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return ff_get_format(s->avctx, pix_fmts);
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// export multilayer information from active VPS to the caller,
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// so it is available in get_format()
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ret = export_multilayer(s, sps->vps);
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if (ret < 0)
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return ret;
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ret = ff_get_format(s->avctx, pix_fmts);
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if (ret < 0)
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return ret;
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s->avctx->pix_fmt = ret;
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// set up multilayer decoding, if requested by caller
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ret = setup_multilayer(s, sps->vps);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int set_sps(HEVCContext *s, HEVCLayerContext *l, const HEVCSPS *sps)
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@ -2948,13 +3069,60 @@ static int set_side_data(HEVCContext *s)
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return 0;
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}
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static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l)
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static int find_finish_setup_nal(const HEVCContext *s)
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{
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int nal_idx = 0;
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for (int i = nal_idx; i < s->pkt.nb_nals; i++) {
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const H2645NAL *nal = &s->pkt.nals[i];
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const int layer_id = nal->nuh_layer_id;
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GetBitContext gb = nal->gb;
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if (layer_id > HEVC_MAX_NUH_LAYER_ID || s->vps->layer_idx[layer_id] < 0 ||
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!(s->layers_active_decode & (1 << s->vps->layer_idx[layer_id])))
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continue;
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switch (nal->type) {
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case HEVC_NAL_TRAIL_R:
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case HEVC_NAL_TRAIL_N:
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case HEVC_NAL_TSA_N:
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case HEVC_NAL_TSA_R:
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case HEVC_NAL_STSA_N:
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case HEVC_NAL_STSA_R:
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case HEVC_NAL_BLA_W_LP:
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case HEVC_NAL_BLA_W_RADL:
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case HEVC_NAL_BLA_N_LP:
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case HEVC_NAL_IDR_W_RADL:
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case HEVC_NAL_IDR_N_LP:
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case HEVC_NAL_CRA_NUT:
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case HEVC_NAL_RADL_N:
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case HEVC_NAL_RADL_R:
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case HEVC_NAL_RASL_N:
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case HEVC_NAL_RASL_R:
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if (!get_bits1(&gb)) // first_slice_segment_in_pic_flag
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continue;
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case HEVC_NAL_VPS:
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case HEVC_NAL_SPS:
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case HEVC_NAL_PPS:
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nal_idx = i;
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break;
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}
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}
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return nal_idx;
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}
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static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l,
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unsigned nal_idx)
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{
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const HEVCPPS *const pps = s->ps.pps_list[s->sh.pps_id];
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const HEVCSPS *const sps = pps->sps;
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int pic_size_in_ctb = ((sps->width >> sps->log2_min_cb_size) + 1) *
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((sps->height >> sps->log2_min_cb_size) + 1);
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int new_sequence = IS_IDR(s) || IS_BLA(s) || s->last_eos;
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int new_sequence = (l == &s->layers[0]) &&
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(IS_IDR(s) || IS_BLA(s) || s->last_eos);
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int prev_layers_active_decode = s->layers_active_decode;
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int prev_layers_active_output = s->layers_active_output;
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int ret;
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if (sps->vps != s->vps && l != &s->layers[0]) {
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@ -2965,7 +3133,32 @@ static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l)
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ff_refstruct_replace(&s->pps, pps);
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if (l->sps != sps) {
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enum AVPixelFormat pix_fmt;
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const HEVCSPS *sps_base = s->layers[0].sps;
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enum AVPixelFormat pix_fmt = sps->pix_fmt;
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if (l != &s->layers[0]) {
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if (!sps_base) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Access unit starts with a non-base layer frame\n");
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return AVERROR_INVALIDDATA;
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}
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// Files produced by Vision Pro lack VPS extension VUI,
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// so the secondary layer has no range information.
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// This check avoids failing in such a case.
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if (sps_base->pix_fmt == AV_PIX_FMT_YUVJ420P &&
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sps->pix_fmt == AV_PIX_FMT_YUV420P &&
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!sps->vui.common.video_signal_type_present_flag)
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pix_fmt = sps_base->pix_fmt;
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if (pix_fmt != sps_base->pix_fmt ||
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sps->width != sps_base->width ||
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sps->height != sps_base->height) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Base/non-base layer SPS have unsupported parameter combination\n");
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return AVERROR(ENOSYS);
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}
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}
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ff_hevc_clear_refs(l);
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@ -2973,14 +3166,17 @@ static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l)
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if (ret < 0)
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return ret;
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export_stream_params(s, sps);
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if (l == &s->layers[0]) {
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export_stream_params(s, sps);
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pix_fmt = get_format(s, sps);
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if (pix_fmt < 0)
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return pix_fmt;
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s->avctx->pix_fmt = pix_fmt;
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ret = get_format(s, sps);
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if (ret < 0) {
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set_sps(s, l, NULL);
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return ret;
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}
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new_sequence = 1;
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new_sequence = 1;
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}
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}
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memset(l->horizontal_bs, 0, l->bs_width * l->bs_height);
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@ -3015,7 +3211,8 @@ static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l)
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s->local_ctx[0].end_of_tiles_x = pps->column_width[0] << sps->log2_ctb_size;
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if (new_sequence) {
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ret = ff_hevc_output_frames(s, l, 0, 0, s->sh.no_output_of_prior_pics_flag);
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ret = ff_hevc_output_frames(s, prev_layers_active_decode, prev_layers_active_output,
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0, 0, s->sh.no_output_of_prior_pics_flag);
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if (ret < 0)
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return ret;
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}
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@ -3072,7 +3269,8 @@ static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l)
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s->cur_frame->f->pict_type = 3 - s->sh.slice_type;
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ret = ff_hevc_output_frames(s, l, sps->temporal_layer[sps->max_sub_layers - 1].num_reorder_pics,
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ret = ff_hevc_output_frames(s, s->layers_active_decode, s->layers_active_output,
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sps->temporal_layer[sps->max_sub_layers - 1].num_reorder_pics,
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sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering, 0);
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if (ret < 0)
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goto fail;
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@ -3083,13 +3281,21 @@ static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l)
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goto fail;
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}
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ff_thread_finish_setup(s->avctx);
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// after starting the base-layer frame we know which layers will be decoded,
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// so we can now figure out which NALUs to wait for before we can call
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// ff_thread_finish_setup()
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if (l == &s->layers[0])
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s->finish_setup_nal_idx = find_finish_setup_nal(s);
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if (nal_idx >= s->finish_setup_nal_idx)
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ff_thread_finish_setup(s->avctx);
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return 0;
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fail:
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if (s->cur_frame)
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ff_hevc_unref_frame(s->cur_frame, ~0);
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if (l->cur_frame)
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ff_hevc_unref_frame(l->cur_frame, ~0);
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l->cur_frame = NULL;
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s->cur_frame = s->collocated_ref = NULL;
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s->slice_initialized = 0;
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return ret;
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@ -3164,9 +3370,9 @@ static int verify_md5(HEVCContext *s, AVFrame *frame)
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return err;
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}
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static int hevc_frame_end(HEVCContext *s)
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static int hevc_frame_end(HEVCContext *s, HEVCLayerContext *l)
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{
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HEVCFrame *out = s->cur_frame;
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HEVCFrame *out = l->cur_frame;
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const AVFilmGrainParams *fgp;
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av_unused int ret;
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@ -3198,23 +3404,32 @@ static int hevc_frame_end(HEVCContext *s)
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} else {
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if (s->avctx->err_recognition & AV_EF_CRCCHECK &&
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s->sei.picture_hash.is_md5) {
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ret = verify_md5(s, s->cur_frame->f);
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ret = verify_md5(s, out->f);
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if (ret < 0 && s->avctx->err_recognition & AV_EF_EXPLODE)
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return ret;
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}
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}
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s->sei.picture_hash.is_md5 = 0;
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av_log(s->avctx, AV_LOG_DEBUG, "Decoded frame with POC %d.\n", s->poc);
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av_log(s->avctx, AV_LOG_DEBUG, "Decoded frame with POC %zu/%d.\n",
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l - s->layers, s->poc);
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return 0;
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}
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static int decode_slice(HEVCContext *s, HEVCLayerContext *l,
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const H2645NAL *nal, GetBitContext *gb)
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static int decode_slice(HEVCContext *s, unsigned nal_idx, GetBitContext *gb)
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{
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const int layer_idx = s->vps ? s->vps->layer_idx[s->nuh_layer_id] : 0;
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HEVCLayerContext *l;
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int ret;
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// skip layers not requested to be decoded
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// layers_active_decode can only change while decoding a base-layer frame,
|
||||
// so we can check it for non-base layers
|
||||
if (layer_idx < 0 ||
|
||||
(s->nuh_layer_id > 0 && !(s->layers_active_decode & (1 << layer_idx))))
|
||||
return 0;
|
||||
|
||||
ret = hls_slice_header(&s->sh, s, gb);
|
||||
if (ret < 0) {
|
||||
// hls_slice_header() does not cleanup on failure thus the state now is inconsistant so we cannot use it on depandant slices
|
||||
@ -3230,16 +3445,25 @@ static int decode_slice(HEVCContext *s, HEVCLayerContext *l,
|
||||
return 0;
|
||||
}
|
||||
|
||||
// switching to a new layer, mark previous layer's frame (if any) as done
|
||||
if (s->cur_layer != layer_idx &&
|
||||
s->layers[s->cur_layer].cur_frame &&
|
||||
s->avctx->active_thread_type == FF_THREAD_FRAME)
|
||||
ff_progress_frame_report(&s->layers[s->cur_layer].cur_frame->tf, INT_MAX);
|
||||
|
||||
s->cur_layer = layer_idx;
|
||||
l = &s->layers[s->cur_layer];
|
||||
|
||||
if (s->sh.first_slice_in_pic_flag) {
|
||||
if (s->cur_frame) {
|
||||
if (l->cur_frame) {
|
||||
av_log(s->avctx, AV_LOG_ERROR, "Two slices reporting being the first in the same frame.\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
ret = hevc_frame_start(s, l);
|
||||
ret = hevc_frame_start(s, l, nal_idx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
} else if (!s->cur_frame) {
|
||||
} else if (!l->cur_frame) {
|
||||
av_log(s->avctx, AV_LOG_ERROR, "First slice in a frame missing.\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
@ -3251,16 +3475,16 @@ static int decode_slice(HEVCContext *s, HEVCLayerContext *l,
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
ret = decode_slice_data(s, l, nal, gb);
|
||||
ret = decode_slice_data(s, l, &s->pkt.nals[nal_idx], gb);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
|
||||
static int decode_nal_unit(HEVCContext *s, unsigned nal_idx)
|
||||
{
|
||||
HEVCLayerContext *l = &s->layers[0];
|
||||
H2645NAL *nal = &s->pkt.nals[nal_idx];
|
||||
GetBitContext gb = nal->gb;
|
||||
int ret;
|
||||
|
||||
@ -3319,7 +3543,7 @@ static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
|
||||
case HEVC_NAL_RADL_R:
|
||||
case HEVC_NAL_RASL_N:
|
||||
case HEVC_NAL_RASL_R:
|
||||
ret = decode_slice(s, l, nal, &gb);
|
||||
ret = decode_slice(s, nal_idx, &gb);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
break;
|
||||
@ -3420,11 +3644,10 @@ static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
|
||||
H2645NAL *nal = &s->pkt.nals[i];
|
||||
|
||||
if (s->avctx->skip_frame >= AVDISCARD_ALL ||
|
||||
(s->avctx->skip_frame >= AVDISCARD_NONREF
|
||||
&& ff_hevc_nal_is_nonref(nal->type)) || nal->nuh_layer_id > 0)
|
||||
(s->avctx->skip_frame >= AVDISCARD_NONREF && ff_hevc_nal_is_nonref(nal->type)))
|
||||
continue;
|
||||
|
||||
ret = decode_nal_unit(s, nal);
|
||||
ret = decode_nal_unit(s, i);
|
||||
if (ret < 0) {
|
||||
av_log(s->avctx, AV_LOG_WARNING,
|
||||
"Error parsing NAL unit #%d.\n", i);
|
||||
@ -3433,12 +3656,17 @@ static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
|
||||
}
|
||||
|
||||
fail:
|
||||
if (s->cur_frame) {
|
||||
for (int i = 0; i < FF_ARRAY_ELEMS(s->layers); i++) {
|
||||
HEVCLayerContext *l = &s->layers[i];
|
||||
|
||||
if (!l->cur_frame)
|
||||
continue;
|
||||
|
||||
if (ret >= 0)
|
||||
ret = hevc_frame_end(s);
|
||||
ret = hevc_frame_end(s, l);
|
||||
|
||||
if (s->avctx->active_thread_type == FF_THREAD_FRAME)
|
||||
ff_progress_frame_report(&s->cur_frame->tf, INT_MAX);
|
||||
ff_progress_frame_report(&l->cur_frame->tf, INT_MAX);
|
||||
}
|
||||
|
||||
return ret;
|
||||
@ -3459,6 +3687,11 @@ static int hevc_decode_extradata(HEVCContext *s, uint8_t *buf, int length, int f
|
||||
if (first && s->ps.sps_list[i]) {
|
||||
const HEVCSPS *sps = s->ps.sps_list[i];
|
||||
export_stream_params(s, sps);
|
||||
|
||||
ret = export_multilayer(s, sps->vps);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -3489,7 +3722,8 @@ static int hevc_receive_frame(AVCodecContext *avctx, AVFrame *frame)
|
||||
av_packet_unref(avpkt);
|
||||
ret = ff_decode_get_packet(avctx, avpkt);
|
||||
if (ret == AVERROR_EOF) {
|
||||
ret = ff_hevc_output_frames(s, &s->layers[0], 0, 0, 0);
|
||||
ret = ff_hevc_output_frames(s, s->layers_active_decode,
|
||||
s->layers_active_output, 0, 0, 0);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
goto do_output;
|
||||
@ -3555,6 +3789,8 @@ static int hevc_ref_frame(HEVCFrame *dst, const HEVCFrame *src)
|
||||
dst->ctb_count = src->ctb_count;
|
||||
dst->flags = src->flags;
|
||||
|
||||
dst->base_layer_frame = src->base_layer_frame;
|
||||
|
||||
ff_refstruct_replace(&dst->hwaccel_picture_private,
|
||||
src->hwaccel_picture_private);
|
||||
|
||||
@ -3690,9 +3926,24 @@ static int hevc_update_thread_context(AVCodecContext *dst,
|
||||
|
||||
s->is_nalff = s0->is_nalff;
|
||||
s->nal_length_size = s0->nal_length_size;
|
||||
s->layers_active_decode = s0->layers_active_decode;
|
||||
s->layers_active_output = s0->layers_active_output;
|
||||
|
||||
s->film_grain_warning_shown = s0->film_grain_warning_shown;
|
||||
|
||||
if (s->nb_view_ids != s0->nb_view_ids ||
|
||||
memcmp(s->view_ids, s0->view_ids, sizeof(*s->view_ids) * s->nb_view_ids)) {
|
||||
av_freep(&s->view_ids);
|
||||
s->nb_view_ids = 0;
|
||||
|
||||
if (s0->nb_view_ids) {
|
||||
s->view_ids = av_memdup(s0->view_ids, s0->nb_view_ids * sizeof(*s0->view_ids));
|
||||
if (!s->view_ids)
|
||||
return AVERROR(ENOMEM);
|
||||
s->nb_view_ids = s0->nb_view_ids;
|
||||
}
|
||||
}
|
||||
|
||||
ret = ff_h2645_sei_ctx_replace(&s->sei.common, &s0->sei.common);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
@ -3787,6 +4038,19 @@ static const AVOption options[] = {
|
||||
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, PAR },
|
||||
{ "strict-displaywin", "stricly apply default display window size", OFFSET(apply_defdispwin),
|
||||
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, PAR },
|
||||
{ "view_ids", "Array of view IDs that should be decoded and output; a single -1 to decode all views",
|
||||
.offset = OFFSET(view_ids), .type = AV_OPT_TYPE_INT | AV_OPT_TYPE_FLAG_ARRAY,
|
||||
.min = -1, .max = INT_MAX, .flags = PAR },
|
||||
{ "view_ids_available", "Array of available view IDs is exported here",
|
||||
.offset = OFFSET(view_ids_available), .type = AV_OPT_TYPE_UINT | AV_OPT_TYPE_FLAG_ARRAY,
|
||||
.flags = PAR | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
|
||||
{ "view_pos_available", "Array of view positions for view_ids_available is exported here, as AVStereo3DView",
|
||||
.offset = OFFSET(view_pos_available), .type = AV_OPT_TYPE_UINT | AV_OPT_TYPE_FLAG_ARRAY,
|
||||
.flags = PAR | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY, .unit = "view_pos" },
|
||||
{ "unspecified", .type = AV_OPT_TYPE_CONST, .default_val = { .i64 = AV_STEREO3D_VIEW_UNSPEC }, .unit = "view_pos" },
|
||||
{ "left", .type = AV_OPT_TYPE_CONST, .default_val = { .i64 = AV_STEREO3D_VIEW_LEFT }, .unit = "view_pos" },
|
||||
{ "right", .type = AV_OPT_TYPE_CONST, .default_val = { .i64 = AV_STEREO3D_VIEW_RIGHT }, .unit = "view_pos" },
|
||||
|
||||
{ NULL },
|
||||
};
|
||||
|
||||
|
||||
@ -375,6 +375,10 @@ typedef struct HEVCFrame {
|
||||
|
||||
void *hwaccel_picture_private; ///< RefStruct reference
|
||||
|
||||
// for secondary-layer frames, this is the DPB index of the base-layer frame
|
||||
// from the same AU, if it exists, otherwise -1
|
||||
int base_layer_frame;
|
||||
|
||||
/**
|
||||
* A combination of HEVC_FRAME_FLAG_*
|
||||
*/
|
||||
@ -487,9 +491,13 @@ typedef struct HEVCContext {
|
||||
HEVCLocalContext *local_ctx;
|
||||
unsigned nb_local_ctx;
|
||||
|
||||
HEVCLayerContext layers[1];
|
||||
// index in layers of the layer currently being decoded
|
||||
// per-layer decoding state, addressed by VPS layer indices
|
||||
HEVCLayerContext layers[HEVC_VPS_MAX_LAYERS];
|
||||
// VPS index of the layer currently being decoded
|
||||
unsigned cur_layer;
|
||||
// bitmask of layer indices that are active for decoding/output
|
||||
unsigned layers_active_decode;
|
||||
unsigned layers_active_output;
|
||||
|
||||
/** 1 if the independent slice segment header was successfully parsed */
|
||||
uint8_t slice_initialized;
|
||||
@ -539,11 +547,24 @@ typedef struct HEVCContext {
|
||||
H2645Packet pkt;
|
||||
// type of the first VCL NAL of the current frame
|
||||
enum HEVCNALUnitType first_nal_type;
|
||||
// index in pkt.nals of the NAL unit after which we can call
|
||||
// ff_thread_finish_setup()
|
||||
unsigned finish_setup_nal_idx;
|
||||
|
||||
int is_nalff; ///< this flag is != 0 if bitstream is encapsulated
|
||||
///< as a format defined in 14496-15
|
||||
int apply_defdispwin;
|
||||
|
||||
// multi-layer AVOptions
|
||||
int *view_ids;
|
||||
unsigned nb_view_ids;
|
||||
|
||||
unsigned *view_ids_available;
|
||||
unsigned nb_view_ids_available;
|
||||
|
||||
unsigned *view_pos_available;
|
||||
unsigned nb_view_pos_available;
|
||||
|
||||
int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
|
||||
int nuh_layer_id;
|
||||
|
||||
@ -644,12 +665,14 @@ static av_always_inline int ff_hevc_nal_is_nonref(enum HEVCNALUnitType type)
|
||||
* Find frames in the DPB that are ready for output and either write them to the
|
||||
* output FIFO or drop their output flag, depending on the value of discard.
|
||||
*
|
||||
* @param max_output maximum number of output-pending frames that can be
|
||||
* present in the DPB before output is triggered
|
||||
* @param max_output maximum number of AUs with an output-pending frame in at
|
||||
* least one layer that can be present in the DPB before output
|
||||
* is triggered
|
||||
* @param max_dpb maximum number of any frames that can be present in the DPB
|
||||
* before output is triggered
|
||||
* for any layer before output is triggered
|
||||
*/
|
||||
int ff_hevc_output_frames(HEVCContext *s, HEVCLayerContext *l,
|
||||
int ff_hevc_output_frames(HEVCContext *s,
|
||||
unsigned layers_active_decode, unsigned layers_active_output,
|
||||
unsigned max_output, unsigned max_dpb, int discard);
|
||||
|
||||
void ff_hevc_unref_frame(HEVCFrame *frame, int flags);
|
||||
|
||||
@ -80,6 +80,8 @@ void ff_hevc_flush_dpb(HEVCContext *s)
|
||||
|
||||
static HEVCFrame *alloc_frame(HEVCContext *s, HEVCLayerContext *l)
|
||||
{
|
||||
const HEVCVPS *vps = l->sps->vps;
|
||||
const int view_id = vps->view_id[s->cur_layer];
|
||||
int i, j, ret;
|
||||
for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
|
||||
HEVCFrame *frame = &l->DPB[i];
|
||||
@ -99,6 +101,17 @@ static HEVCFrame *alloc_frame(HEVCContext *s, HEVCLayerContext *l)
|
||||
goto fail;
|
||||
}
|
||||
|
||||
// add view ID side data if it's nontrivial
|
||||
if (vps->nb_layers > 1 || view_id) {
|
||||
AVFrameSideData *sd = av_frame_side_data_new(&frame->f->side_data,
|
||||
&frame->f->nb_side_data,
|
||||
AV_FRAME_DATA_VIEW_ID,
|
||||
sizeof(int), 0);
|
||||
if (!sd)
|
||||
goto fail;
|
||||
*(int*)sd->data = view_id;
|
||||
}
|
||||
|
||||
ret = ff_progress_frame_get_buffer(s->avctx, &frame->tf,
|
||||
AV_GET_BUFFER_FLAG_REF);
|
||||
if (ret < 0)
|
||||
@ -165,6 +178,9 @@ int ff_hevc_set_new_ref(HEVCContext *s, HEVCLayerContext *l, int poc)
|
||||
l->cur_frame = ref;
|
||||
s->collocated_ref = NULL;
|
||||
|
||||
ref->base_layer_frame = (l != &s->layers[0] && s->layers[0].cur_frame) ?
|
||||
s->layers[0].cur_frame - s->layers[0].DPB : -1;
|
||||
|
||||
if (s->sh.pic_output_flag)
|
||||
ref->flags = HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_SHORT_REF;
|
||||
else
|
||||
@ -189,33 +205,49 @@ static void unref_missing_refs(HEVCLayerContext *l)
|
||||
}
|
||||
}
|
||||
|
||||
int ff_hevc_output_frames(HEVCContext *s, HEVCLayerContext *l,
|
||||
int ff_hevc_output_frames(HEVCContext *s,
|
||||
unsigned layers_active_decode, unsigned layers_active_output,
|
||||
unsigned max_output, unsigned max_dpb, int discard)
|
||||
{
|
||||
while (1) {
|
||||
int nb_dpb = 0;
|
||||
int nb_dpb[HEVC_VPS_MAX_LAYERS] = { 0 };
|
||||
int nb_output = 0;
|
||||
int min_poc = INT_MAX;
|
||||
int i, min_idx, ret = 0;
|
||||
int min_layer = -1;
|
||||
int min_idx, ret = 0;
|
||||
|
||||
for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
|
||||
HEVCFrame *frame = &l->DPB[i];
|
||||
if (frame->flags & HEVC_FRAME_FLAG_OUTPUT) {
|
||||
nb_output++;
|
||||
if (frame->poc < min_poc || nb_output == 1) {
|
||||
min_poc = frame->poc;
|
||||
min_idx = i;
|
||||
for (int layer = 0; layer < FF_ARRAY_ELEMS(s->layers); layer++) {
|
||||
HEVCLayerContext *l = &s->layers[layer];
|
||||
|
||||
if (!(layers_active_decode & (1 << layer)))
|
||||
continue;
|
||||
|
||||
for (int i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
|
||||
HEVCFrame *frame = &l->DPB[i];
|
||||
if (frame->flags & HEVC_FRAME_FLAG_OUTPUT) {
|
||||
// nb_output counts AUs with an output-pending frame
|
||||
// in at least one layer
|
||||
if (!(frame->base_layer_frame >= 0 &&
|
||||
(s->layers[0].DPB[frame->base_layer_frame].flags & HEVC_FRAME_FLAG_OUTPUT)))
|
||||
nb_output++;
|
||||
if (min_layer < 0 || frame->poc < min_poc) {
|
||||
min_poc = frame->poc;
|
||||
min_idx = i;
|
||||
min_layer = layer;
|
||||
}
|
||||
}
|
||||
nb_dpb[layer] += !!frame->flags;
|
||||
}
|
||||
nb_dpb += !!frame->flags;
|
||||
}
|
||||
|
||||
if (nb_output > max_output ||
|
||||
(nb_output && nb_dpb > max_dpb)) {
|
||||
HEVCFrame *frame = &l->DPB[min_idx];
|
||||
(nb_output &&
|
||||
(nb_dpb[0] > max_dpb || nb_dpb[1] > max_dpb))) {
|
||||
HEVCFrame *frame = &s->layers[min_layer].DPB[min_idx];
|
||||
AVFrame *f = frame->needs_fg ? frame->frame_grain : frame->f;
|
||||
int output = !discard && (layers_active_output & (1 << min_layer));
|
||||
|
||||
if (!discard) {
|
||||
if (output) {
|
||||
f->pkt_dts = s->pkt_dts;
|
||||
ret = ff_container_fifo_write(s->output_fifo, f);
|
||||
}
|
||||
@ -223,8 +255,8 @@ int ff_hevc_output_frames(HEVCContext *s, HEVCLayerContext *l,
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
av_log(s->avctx, AV_LOG_DEBUG, "%s frame with POC %d.\n",
|
||||
discard ? "Discarded" : "Output", frame->poc);
|
||||
av_log(s->avctx, AV_LOG_DEBUG, "%s frame with POC %d/%d.\n",
|
||||
output ? "Output" : "Discarded", min_layer, frame->poc);
|
||||
continue;
|
||||
}
|
||||
return 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user