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51d6ae099f
Decoders will currently warn if an audio decoder not marked with AV_CODEC_CAP_SUBFRAMES consumes less than the whole packet, but * this happens for regular files * this has no negative consequences * there is no meeaningful action that can or should be taken in response The warning is thus useless noise.
246 lines
7.2 KiB
C
246 lines
7.2 KiB
C
/*
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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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* common internal api header.
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*/
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#ifndef AVCODEC_INTERNAL_H
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#define AVCODEC_INTERNAL_H
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#include <stdint.h>
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#include "libavutil/buffer.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/pixfmt.h"
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#include "avcodec.h"
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#include "config.h"
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#if CONFIG_LCMS2
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# include "fflcms2.h"
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#endif
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#define FF_SANE_NB_CHANNELS 512U
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#if HAVE_SIMD_ALIGN_64
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# define STRIDE_ALIGN 64 /* AVX-512 */
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#elif HAVE_SIMD_ALIGN_32
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# define STRIDE_ALIGN 32
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#elif HAVE_SIMD_ALIGN_16
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# define STRIDE_ALIGN 16
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#else
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# define STRIDE_ALIGN 8
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#endif
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typedef struct AVCodecInternal {
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/**
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* When using frame-threaded decoding, this field is set for the first
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* worker thread (e.g. to decode extradata just once).
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*/
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int is_copy;
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/**
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* An audio frame with less than required samples has been submitted (and
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* potentially padded with silence). Reject all subsequent frames.
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*/
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int last_audio_frame;
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/**
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* Audio encoders can set this flag during init to indicate that they
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* want the small last frame to be padded to a multiple of pad_samples.
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*/
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int pad_samples;
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AVBufferRef *pool;
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void *thread_ctx;
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/**
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* This packet is used to hold the packet given to decoders
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* implementing the .decode API; it is unused by the generic
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* code for decoders implementing the .receive_frame API and
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* may be freely used (but not freed) by them with the caveat
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* that the packet will be unreferenced generically in
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* avcodec_flush_buffers().
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*/
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AVPacket *in_pkt;
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struct AVBSFContext *bsf;
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/**
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* Properties (timestamps+side data) extracted from the last packet passed
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* for decoding.
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*/
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AVPacket *last_pkt_props;
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/**
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* temporary buffer used for encoders to store their bitstream
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*/
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uint8_t *byte_buffer;
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unsigned int byte_buffer_size;
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/**
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* This is set to AV_PKT_FLAG_KEY for encoders that encode intra-only
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* formats (i.e. whose codec descriptor has AV_CODEC_PROP_INTRA_ONLY set).
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* This is used to set said flag generically for said encoders.
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*/
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int intra_only_flag;
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void *frame_thread_encoder;
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/**
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* The input frame is stored here for encoders implementing the simple
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* encode API.
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*
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* Not allocated in other cases.
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*/
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AVFrame *in_frame;
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/**
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* When the AV_CODEC_FLAG_RECON_FRAME flag is used. the encoder should store
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* here the reconstructed frame corresponding to the last returned packet.
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*
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* Not allocated in other cases.
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*/
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AVFrame *recon_frame;
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/**
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* If this is set, then FFCodec->close (if existing) needs to be called
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* for the parent AVCodecContext.
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*/
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int needs_close;
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/**
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* Number of audio samples to skip at the start of the next decoded frame
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*/
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int skip_samples;
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/**
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* hwaccel-specific private data
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*/
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void *hwaccel_priv_data;
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/**
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* checks API usage: after codec draining, flush is required to resume operation
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*/
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int draining;
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/**
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* Temporary buffers for newly received or not yet output packets/frames.
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*/
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AVPacket *buffer_pkt;
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AVFrame *buffer_frame;
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int draining_done;
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/* to prevent infinite loop on errors when draining */
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int nb_draining_errors;
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/* used when avctx flag AV_CODEC_FLAG_DROPCHANGED is set */
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int changed_frames_dropped;
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int initial_format;
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int initial_width, initial_height;
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int initial_sample_rate;
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AVChannelLayout initial_ch_layout;
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#if CONFIG_LCMS2
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FFIccContext icc; /* used to read and write embedded ICC profiles */
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#endif
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} AVCodecInternal;
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/**
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* Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
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* If there is no such matching pair then size is returned.
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*/
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int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b);
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unsigned int ff_toupper4(unsigned int x);
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void ff_color_frame(AVFrame *frame, const int color[4]);
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/**
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* Maximum size in bytes of extradata.
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* This value was chosen such that every bit of the buffer is
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* addressable by a 32-bit signed integer as used by get_bits.
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*/
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#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)
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/**
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* 2^(x) for integer x
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* @return correctly rounded float
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*/
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static av_always_inline float ff_exp2fi(int x) {
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/* Normal range */
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if (-126 <= x && x <= 128)
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return av_int2float((x+127) << 23);
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/* Too large */
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else if (x > 128)
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return INFINITY;
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/* Subnormal numbers */
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else if (x > -150)
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return av_int2float(1 << (x+149));
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/* Negligibly small */
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else
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return 0;
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}
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int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx);
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int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec);
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/**
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* Add a CPB properties side data to an encoding context.
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*/
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AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx);
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/**
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* Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info
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*
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* @param frame Raw frame to get S12M timecode side data from
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* @param rate The frame rate
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* @param prefix_len Number of bytes to allocate before SEI message
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* @param data Pointer to a variable to store allocated memory
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* Upon return the variable will hold NULL on error or if frame has no S12M timecode info.
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* Otherwise it will point to prefix_len uninitialized bytes followed by
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* *sei_size SEI message
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* @param sei_size Pointer to a variable to store generated SEI message length
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* @return Zero on success, negative error code on failure
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*/
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int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len,
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void **data, size_t *sei_size);
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/**
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* Get an estimated video bitrate based on frame size, frame rate and coded
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* bits per pixel.
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*/
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int64_t ff_guess_coded_bitrate(AVCodecContext *avctx);
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/**
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* Check if a value is in the list. If not, return the default value
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*
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* @param ctx Context for the log msg
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* @param val_name Name of the checked value, for log msg
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* @param array_valid_values Array of valid int, ended with INT_MAX
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* @param default_value Value return if checked value is not in the array
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* @return Value or default_value.
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*/
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int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
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const int * array_valid_values, int default_value);
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#endif /* AVCODEC_INTERNAL_H */
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