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140 lines
4.1 KiB
140 lines
4.1 KiB
/* |
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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/pixfmt.h" |
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#include "avcodec.h" |
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typedef struct InternalBuffer { |
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uint8_t *base[AV_NUM_DATA_POINTERS]; |
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uint8_t *data[AV_NUM_DATA_POINTERS]; |
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int linesize[AV_NUM_DATA_POINTERS]; |
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int width; |
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int height; |
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enum PixelFormat pix_fmt; |
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uint8_t **extended_data; |
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int audio_data_size; |
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int nb_channels; |
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} InternalBuffer; |
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typedef struct AVCodecInternal { |
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/** |
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* internal buffer count |
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* used by default get/release/reget_buffer(). |
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*/ |
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int buffer_count; |
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/** |
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* internal buffers |
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* used by default get/release/reget_buffer(). |
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*/ |
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InternalBuffer *buffer; |
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/** |
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* Whether the parent AVCodecContext is a copy of the context which had |
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* init() called on it. |
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* This is used by multithreading - shared tables and picture pointers |
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* should be freed from the original context only. |
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*/ |
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int is_copy; |
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#if FF_API_OLD_DECODE_AUDIO |
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/** |
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* Internal sample count used by avcodec_encode_audio() to fabricate pts. |
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* Can be removed along with avcodec_encode_audio(). |
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*/ |
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int sample_count; |
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#endif |
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} AVCodecInternal; |
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struct AVCodecDefault { |
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const uint8_t *key; |
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const uint8_t *value; |
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}; |
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/** |
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* Determine whether pix_fmt is a hardware accelerated format. |
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*/ |
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int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt); |
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/** |
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* Return the hardware accelerated codec for codec codec_id and |
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* pixel format pix_fmt. |
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* |
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* @param codec_id the codec to match |
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* @param pix_fmt the pixel format to match |
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* @return the hardware accelerated codec, or NULL if none was found. |
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*/ |
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AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt); |
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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 avpriv_toupper4(unsigned int x); |
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/** |
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* does needed setup of pkt_pts/pos and such for (re)get_buffer(); |
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*/ |
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void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic); |
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/** |
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* Remove and free all side data from packet. |
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*/ |
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void ff_packet_free_side_data(AVPacket *pkt); |
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int avpriv_lock_avformat(void); |
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int avpriv_unlock_avformat(void); |
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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) - FF_INPUT_BUFFER_PADDING_SIZE) |
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/** |
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* Check AVPacket size and/or allocate data. |
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* |
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* Encoders supporting AVCodec.encode2() can use this as a convenience to |
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* ensure the output packet data is large enough, whether provided by the user |
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* or allocated in this function. |
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* |
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* @param avpkt the AVPacket |
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* If avpkt->data is already set, avpkt->size is checked |
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* to ensure it is large enough. |
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* If avpkt->data is NULL, a new buffer is allocated. |
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* avpkt->size is set to the specified size. |
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* All other AVPacket fields will be reset with av_init_packet(). |
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* @param size the minimum required packet size |
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* @return 0 on success, negative error code on failure |
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*/ |
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int ff_alloc_packet(AVPacket *avpkt, int size); |
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#endif /* AVCODEC_INTERNAL_H */
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