Leigh Scott
4 years ago
parent
2ec5fa999a
commit
787f45edf6
@ -0,0 +1,223 @@
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--- gst-libav-1.18.2.old/ext/libav/gstavdemux.c 2021-02-26 16:47:35.842537392 -0800
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+++ gst-libav-1.18.2.new/ext/libav/gstavdemux.c 2021-02-26 16:47:55.137537967 -0800
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@@ -41,6 +41,211 @@
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typedef struct _GstFFMpegDemux GstFFMpegDemux;
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typedef struct _GstFFStream GstFFStream;
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+typedef struct FFFrac {
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+ int64_t val, num, den;
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+} FFFrac;
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+
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+struct AVStreamInternal {
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+ /**
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+ * Set to 1 if the codec allows reordering, so pts can be different
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+ * from dts.
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+ */
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+ int reorder;
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+
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+ /**
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+ * bitstream filter to run on stream
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+ * - encoding: Set by muxer using ff_stream_add_bitstream_filter
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+ * - decoding: unused
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+ */
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+ AVBSFContext *bsfc;
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+
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+ /**
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+ * Whether or not check_bitstream should still be run on each packet
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+ */
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+ int bitstream_checked;
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+
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+ /**
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+ * The codec context used by avformat_find_stream_info, the parser, etc.
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+ */
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+ AVCodecContext *avctx;
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+ /**
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+ * 1 if avctx has been initialized with the values from the codec parameters
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+ */
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+ int avctx_inited;
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+
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+ enum AVCodecID orig_codec_id;
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+
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+ /* the context for extracting extradata in find_stream_info()
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+ * inited=1/bsf=NULL signals that extracting is not possible (codec not
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+ * supported) */
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+ struct {
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+ AVBSFContext *bsf;
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+ AVPacket *pkt;
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+ int inited;
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+ } extract_extradata;
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+
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+ /**
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+ * Whether the internal avctx needs to be updated from codecpar (after a late change to codecpar)
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+ */
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+ int need_context_update;
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+
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+ int is_intra_only;
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+
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+ FFFrac *priv_pts;
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+
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+#define MAX_STD_TIMEBASES (30*12+30+3+6)
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+ /**
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+ * Stream information used internally by avformat_find_stream_info()
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+ */
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+ struct {
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+ int64_t last_dts;
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+ int64_t duration_gcd;
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+ int duration_count;
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+ int64_t rfps_duration_sum;
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+ double (*duration_error)[2][MAX_STD_TIMEBASES];
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+ int64_t codec_info_duration;
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+ int64_t codec_info_duration_fields;
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+ int frame_delay_evidence;
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+
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+ /**
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+ * 0 -> decoder has not been searched for yet.
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+ * >0 -> decoder found
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+ * <0 -> decoder with codec_id == -found_decoder has not been found
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+ */
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+ int found_decoder;
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+
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+ int64_t last_duration;
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+
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+ /**
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+ * Those are used for average framerate estimation.
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+ */
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+ int64_t fps_first_dts;
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+ int fps_first_dts_idx;
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+ int64_t fps_last_dts;
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+ int fps_last_dts_idx;
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+
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+ } *info;
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+
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+ AVIndexEntry *index_entries; /**< Only used if the format does not
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+ support seeking natively. */
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+ int nb_index_entries;
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+ unsigned int index_entries_allocated_size;
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+
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+ int64_t interleaver_chunk_size;
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+ int64_t interleaver_chunk_duration;
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+
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+ /**
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+ * stream probing state
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+ * -1 -> probing finished
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+ * 0 -> no probing requested
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+ * rest -> perform probing with request_probe being the minimum score to accept.
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+ */
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+ int request_probe;
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+ /**
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+ * Indicates that everything up to the next keyframe
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+ * should be discarded.
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+ */
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+ int skip_to_keyframe;
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+
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+ /**
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+ * Number of samples to skip at the start of the frame decoded from the next packet.
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+ */
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+ int skip_samples;
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+
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+ /**
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+ * If not 0, the number of samples that should be skipped from the start of
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+ * the stream (the samples are removed from packets with pts==0, which also
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+ * assumes negative timestamps do not happen).
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+ * Intended for use with formats such as mp3 with ad-hoc gapless audio
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+ * support.
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+ */
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+ int64_t start_skip_samples;
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+
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+ /**
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+ * If not 0, the first audio sample that should be discarded from the stream.
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+ * This is broken by design (needs global sample count), but can't be
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+ * avoided for broken by design formats such as mp3 with ad-hoc gapless
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+ * audio support.
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+ */
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+ int64_t first_discard_sample;
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+
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+ /**
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+ * The sample after last sample that is intended to be discarded after
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+ * first_discard_sample. Works on frame boundaries only. Used to prevent
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+ * early EOF if the gapless info is broken (considered concatenated mp3s).
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+ */
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+ int64_t last_discard_sample;
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+
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+ /**
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+ * Number of internally decoded frames, used internally in libavformat, do not access
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+ * its lifetime differs from info which is why it is not in that structure.
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+ */
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+ int nb_decoded_frames;
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+
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+ /**
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+ * Timestamp offset added to timestamps before muxing
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+ */
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+ int64_t mux_ts_offset;
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+
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+ /**
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+ * Internal data to check for wrapping of the time stamp
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+ */
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+ int64_t pts_wrap_reference;
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+
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+ /**
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+ * Options for behavior, when a wrap is detected.
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+ *
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+ * Defined by AV_PTS_WRAP_ values.
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+ *
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+ * If correction is enabled, there are two possibilities:
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+ * If the first time stamp is near the wrap point, the wrap offset
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+ * will be subtracted, which will create negative time stamps.
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+ * Otherwise the offset will be added.
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+ */
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+ int pts_wrap_behavior;
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+
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+ /**
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+ * Internal data to prevent doing update_initial_durations() twice
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+ */
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+ int update_initial_durations_done;
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+
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+#define MAX_REORDER_DELAY 16
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+
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+ /**
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+ * Internal data to generate dts from pts
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+ */
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+ int64_t pts_reorder_error[MAX_REORDER_DELAY+1];
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+ uint8_t pts_reorder_error_count[MAX_REORDER_DELAY+1];
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+
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+ int64_t pts_buffer[MAX_REORDER_DELAY+1];
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+
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+ /**
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+ * Internal data to analyze DTS and detect faulty mpeg streams
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+ */
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+ int64_t last_dts_for_order_check;
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+ uint8_t dts_ordered;
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+ uint8_t dts_misordered;
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+
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+ /**
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+ * Internal data to inject global side data
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+ */
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+ int inject_global_side_data;
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+
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+ /**
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+ * display aspect ratio (0 if unknown)
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+ * - encoding: unused
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+ * - decoding: Set by libavformat to calculate sample_aspect_ratio internally
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+ */
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+ AVRational display_aspect_ratio;
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+
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+ AVProbeData probe_data;
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+
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+ /**
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+ * last packet in packet_buffer for this stream when muxing.
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+ */
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+ struct AVPacketList *last_in_packet_buffer;
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+};
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+
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struct _GstFFStream
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{
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GstPad *pad;
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@@ -483,7 +688,7 @@ gst_ffmpegdemux_do_seek (GstFFMpegDemux
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GST_LOG_OBJECT (demux, "keyframeidx: %d", keyframeidx);
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if (keyframeidx >= 0) {
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- fftarget = stream->index_entries[keyframeidx].timestamp;
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+ fftarget = stream->internal->index_entries[keyframeidx].timestamp;
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target = gst_ffmpeg_time_ff_to_gst (fftarget, stream->time_base);
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GST_LOG_OBJECT (demux,
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