From: cloudwalk Date: Fri, 16 Oct 2020 22:45:57 +0000 (+0000) Subject: libav: Initial defs for libavcodec and libavformat. To be continued...(?) X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=54cdfc8bd479c1aac54965211117a04b2830f8b0;p=xonotic%2Fdarkplaces.git libav: Initial defs for libavcodec and libavformat. To be continued...(?) git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@13008 d7cf8633-e32d-0410-b094-e92efae38249 --- diff --git a/av_backend_libav.c b/av_backend_libav.c new file mode 100644 index 00000000..36bfbdf4 --- /dev/null +++ b/av_backend_libav.c @@ -0,0 +1,301 @@ +/* +Copyright (C) 2020 David Knapp (Cloudwalk) + +This program 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. + +This program 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 this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#include "darkplaces.h" + +#include "libavcodec/avcodec.h" +#include "libavformat/avformat.h" + +// Decoding functions +AVCodec *(*qavcodec_find_decoder) (enum AVCodecID id); +AVCodec *(*qavcodec_find_decoder_by_name) (const char *name); +int (*qavcodec_default_get_buffer2) (AVCodecContext *s, AVFrame *frame, int flags); +void (*qavcodec_align_dimensions) (AVCodecContext *s, int *width, int *height); +void (*qavcodec_align_dimensions2) (AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS]); +int (*qavcodec_enum_to_chroma_pos) (int *xpos, int *ypos, enum AVChromaLocation pos); +enum AVChromaLocation (*qavcodec_chroma_pos_to_enum) (int xpos, int ypos); +int (*qavcodec_send_packet) (AVCodecContext *avctx, const AVPacket *avpkt); +int (*qavcodec_receive_frame) (AVCodecContext *avctx, AVFrame *frame); +int (*qavcodec_send_frame) (AVCodecContext *avctx, const AVFrame *frame); +int (*qavcodec_receive_packet) (AVCodecContext *avctx, AVPacket *avpkt); +int (*qavcodec_get_hw_frames_parameters) (AVCodecContext *avctx, AVBufferRef *device_ref, enum AVPixelFormat hw_pix_fmt, AVBufferRef **out_frames_ref); + +// Encoding functions +AVCodec *(*qavcodec_find_encoder) (enum AVCodecID id); +AVCodec *(*qavcodec_find_encoder_by_name) (const char *name); +int (*qavcodec_encode_subtitle) (AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub); + +// Core functions +const AVCodecHWConfig *(*qavcodec_get_hw_config) (const AVCodec *codec, int index); +const AVCodec *(*qav_codec_iterate) (void **opaque); +unsigned (*qavcodec_version) (void); +const char *(*qavcodec_configuration) (void); +const char *(*qavcodec_license) (void); +AVCodecContext *(*qavcodec_alloc_context3) (const AVCodec *codec); +void (*qavcodec_free_context) (AVCodecContext **avctx); +int (*qavcodec_get_context_defaults3) (AVCodecContext *s, const AVCodec *codec); +const AVClass *(*qavcodec_get_class) (void); +const AVClass *(*qavcodec_get_frame_class) (void); +const AVClass *(*qavcodec_get_subtitle_rect_class) (void); +AVCodecParameters *(*qavcodec_parameters_alloc) (void); +void (*qavcodec_parameters_free) (AVCodecParameters **par); +int (*qavcodec_parameters_copy) (AVCodecParameters *dst, const AVCodecParameters *src); +int (*qavcodec_parameters_from_context) (AVCodecParameters *par, const AVCodecContext *codec); +int (*qavcodec_parameters_to_context) (AVCodecContext *codec, const AVCodecParameters *par); +int (*qavcodec_open2) (AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options); +int (*qavcodec_close) (AVCodecContext *avctx); +void (*qavsubtitle_free) (AVSubtitle *sub); + +// Demuxing functions +AVInputFormat *(*qav_find_input_format) (const char *short_name); +AVInputFormat *(*qav_probe_input_format) (AVProbeData *pd, int is_opened); +AVInputFormat *(*qav_probe_input_format2) (AVProbeData *pd, int is_opened, int *score_max); +AVInputFormat *(*qav_probe_input_format3) (AVProbeData *pd, int is_opened, int *score_ret); +int (*qav_probe_input_buffer2) (AVIOContext *pb, AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size); +int (*qav_probe_input_buffer) (AVIOContext *pb, AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size); +int (*qavformat_open_input) (AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options); +int (*qavformat_find_stream_info) (AVFormatContext *ic, AVDictionary **options); +AVProgram *(*qav_find_program_from_stream) (AVFormatContext *ic, AVProgram *last, int s); +void (*qav_program_add_stream_index) (AVFormatContext *ac, int progid, unsigned int idx); +int (*qav_find_best_stream) (AVFormatContext *ic, enum AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec **decoder_ret, int flags); +int (*qav_read_frame) (AVFormatContext *s, AVPacket *pkt); +int (*qav_seek_frame) (AVFormatContext *s, int stream_index, int64_t timestamp, int flags); +int (*qavformat_seek_file) (AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); +int (*qavformat_flush) (AVFormatContext *s); +int (*qav_read_play) (AVFormatContext *s); +int (*qav_read_pause) (AVFormatContext *s); +void (*qavformat_close_input) (AVFormatContext **s); + +// Muxing functions +av_warn_unused_result int (*qavformat_write_header) (AVFormatContext *s, AVDictionary **options); +av_warn_unused_result int (*qavformat_init_output) (AVFormatContext *s, AVDictionary **options); +int (*qav_write_frame) (AVFormatContext *s, AVPacket *pkt); +int (*qav_interleaved_write_frame) (AVFormatContext *s, AVPacket *pkt); +int (*qav_write_uncoded_frame) (AVFormatContext *s, int stream_index, AVFrame *frame); +int (*qav_interleaved_write_uncoded_frame) (AVFormatContext *s, int stream_index, AVFrame *frame); +int (*qav_write_uncoded_frame_query) (AVFormatContext *s, int stream_index); +int (*qav_write_trailer) (AVFormatContext *s); +AVOutputFormat *(*qav_guess_format) (const char *short_name, const char *filename, const char *mime_type); +enum AVCodecID (*qav_guess_codec) (AVOutputFormat *fmt, const char *short_name, const char *filename, const char *mime_type, enum AVMediaType type); +int (*qav_get_output_timestamp) (struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall); + +// Core functions +unsigned (*qavformat_version) (void); +const char *(*qavformat_configuration) (void); +const char *(*qavformat_license) (void); +void (*qav_register_all) (void); +void (*qav_register_input_format) (AVInputFormat *format); +void (*qav_register_output_format) (AVOutputFormat *format); +int (*qavformat_network_init) (void); +int (*qavformat_network_deinit) (void); +AVInputFormat *(*qav_iformat_next) (const AVInputFormat *f); +AVOutputFormat *(*qav_oformat_next) (const AVOutputFormat *f); +AVFormatContext *(*qavformat_alloc_context) (void); +void (*qavformat_free_context) (AVFormatContext *s); +const AVClass *(*qavformat_get_class) (void); +AVStream *(*qavformat_new_stream) (AVFormatContext *s, const AVCodec *c); +uint8_t *(*qav_stream_new_side_data) (AVStream *stream, enum AVPacketSideDataType type, int size); +uint8_t *(*qav_stream_get_side_data) (const AVStream *stream, enum AVPacketSideDataType type, int *size); +AVProgram *(*qav_new_program) (AVFormatContext *s, int id); + +// Utility functions +void (*qav_hex_dump) (FILE *f, const uint8_t *buf, int size); +void (*qav_hex_dump_log) (void *avcl, int level, const uint8_t *buf, int size); +void (*qav_pkt_dump2) (FILE *f, const AVPacket *pkt, int dump_payload, const AVStream *st); +void (*qav_pkt_dump_log2) (void *avcl, int level, const AVPacket *pkt, int dump_payload, const AVStream *st); +enum AVCodecID (*qav_codec_get_id) (const struct AVCodecTag *const *tags, unsigned int tag); +unsigned int (*qav_codec_get_tag) (const struct AVCodecTag *const *tags, enum AVCodecID id); +int (*qav_codec_get_tag2) (const struct AVCodecTag *const *tags, enum AVCodecID id, unsigned int *tag); +int (*qav_find_default_stream_index) (AVFormatContext *s); +int (*qav_index_search_timestamp) (AVStream *st, int64_t timestamp, int flags); +int (*qav_add_index_entry) (AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags); +void (*qav_url_split) (char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url); +void (*qav_dump_format) (AVFormatContext *ic, int index, const char *url, int is_output); +int (*qav_get_frame_filename2) (char *buf, int buf_size, const char *path, int number, int flags); +int (*qav_get_frame_filename) (char *buf, int buf_size, const char *path, int number); +int (*qav_filename_number_test) (const char *filename); +int (*qav_sdp_create) (AVFormatContext *ac[], int n_files, char *buf, int size); +int (*qav_match_ext) (const char *filename, const char *extensions); +int (*qavformat_query_codec) (const AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance); +AVRational (*qav_guess_sample_aspect_ratio) (AVFormatContext *format, AVStream *stream, AVFrame *frame); +AVRational (*qav_guess_frame_rate) (AVFormatContext *ctx, AVStream *stream, AVFrame *frame); +int (*qavformat_match_stream_specifier) (AVFormatContext *s, AVStream *st, const char *spec); +int (*qavformat_queue_attached_pictures) (AVFormatContext *s); +int (*qavformat_transfer_internal_stream_timing_info) (const AVOutputFormat *ofmt, AVStream *ost, const AVStream *ist, enum AVTimebaseSource copy_tb); +AVRational (*qav_stream_get_codec_timebase) (const AVStream *st); + +static dllfunction_t libavcodecfuncs[] = +{ + {"avcodec_find_decoder", (void **) &qavcodec_find_decoder}, + {"avcodec_find_decoder_by_name", (void **) &qavcodec_find_decoder_by_name}, + {"avcodec_default_get_buffer2", (void **) &qavcodec_default_get_buffer2}, + {"avcodec_align_dimensions", (void **) &qavcodec_align_dimensions}, + {"avcodec_align_dimensions2", (void **) &qavcodec_align_dimensions}, + {"avcodec_enum_to_chroma_pos", (void **) &qavcodec_enum_to_chroma_pos}, + {"avcodec_chroma_pos_to_enum", (void **) &qavcodec_chroma_pos_to_enum}, + {"avcodec_send_packet", (void **) &qavcodec_send_packet}, + {"avcodec_receive_frame", (void **) &qavcodec_receive_frame}, + {"avcodec_send_frame", (void **) &qavcodec_send_frame}, + {"avcodec_receive_packet", (void **) &qavcodec_receive_packet}, + {"avcodec_get_hw_frames_parameters", (void **) &qavcodec_get_hw_frames_parameters}, + {"avcodec_get_hw_config", (void **) &qavcodec_get_hw_config}, + {"av_codec_iterate", (void **) &qav_codec_iterate}, + {"avcodec_version", (void **) &qavcodec_version}, + {"avcodec_configuration", (void **) &qavcodec_configuration}, + {"avcodec_license", (void **) &qavcodec_license}, + {"avcodec_alloc_context3", (void **) &qavcodec_alloc_context3}, + {"avcodec_free_context", (void **) &qavcodec_free_context}, + {"avcodec_get_context_defaults3", (void **) &qavcodec_get_context_defaults3}, + {"avcodec_get_class", (void **) &qavcodec_get_class}, + {"avcodec_get_frame_class", (void **) &qavcodec_get_frame_class}, + {"avcodec_get_subtitle_rect_class", (void **) &qavcodec_get_subtitle_rect_class}, + {"avcodec_parameters_alloc", (void **) &qavcodec_parameters_alloc}, + {"avcodec_parameters_free", (void **) &qavcodec_parameters_free}, + {"avcodec_parameters_copy", (void **) &qavcodec_parameters_copy}, + {"avcodec_parameters_from_context", (void **) &qavcodec_parameters_from_context}, + {"avcodec_parameters_to_context", (void **) &qavcodec_parameters_to_context}, + {"avcodec_open2", (void **) &qavcodec_open2}, + {"avcodec_close", (void **) &qavcodec_close}, + {"avsubtitle_free", (void **) &qavsubtitle_free}, + {NULL, NULL} +}; + +static dllfunction_t libavformatfuncs[] = +{ + {"av_find_input_format", (void **) &qav_find_input_format}, + {"av_probe_input_format", (void **) &qav_probe_input_format}, + {"av_probe_input_format2", (void **) &qav_probe_input_format2}, + {"av_probe_input_format3", (void **) &qav_probe_input_format3}, + {"av_probe_input_buffer2", (void **) &qav_probe_input_buffer2}, + {"av_probe_input_buffer", (void **) &qav_probe_input_buffer}, + {"avformat_open_input", (void **) &qavformat_open_input}, + {"avformat_find_stream_info", (void **) &qavformat_find_stream_info}, + {"av_find_program_from_stream", (void **) &qav_find_program_from_stream}, + {"av_program_add_stream_index", (void **) &qav_program_add_stream_index}, + {"av_find_best_stream", (void **) &qav_find_best_stream}, + {"av_read_frame", (void **) &qav_read_frame}, + {"av_seek_frame", (void **) &qav_seek_frame}, + {"avformat_seek_file", (void **) &qavformat_seek_file}, + {"avformat_flush", (void **) &qavformat_flush}, + {"av_read_play", (void **) &qav_read_play}, + {"av_read_pause", (void **) &qav_read_pause}, + {"avformat_close_input", (void **) &qavformat_close_input}, + {"avformat_write_header", (void **) &qavformat_write_header}, + {"avformat_init_output", (void **) &qavformat_init_output}, + {"av_write_frame", (void **) &qav_write_frame}, + {"av_interleaved_write_frame", (void **) &qav_interleaved_write_frame}, + {"av_write_uncoded_frame", (void **) &qav_write_uncoded_frame}, + {"av_interleaved_write_uncoded_frame", (void **) &qav_interleaved_write_uncoded_frame}, + {"av_write_uncoded_frame_query", (void **) &qav_write_uncoded_frame_query}, + {"av_write_trailer", (void **) &qav_write_trailer}, + {"av_guess_format", (void **) &qav_guess_format}, + {"av_guess_codec", (void **) &qav_guess_codec}, + {"av_get_output_timestamp", (void **) &qav_get_output_timestamp}, + {"avformat_version", (void **) &qavformat_version}, + {"avformat_configuration", (void **) &qavformat_configuration}, + {"avformat_license", (void **) &qavformat_license}, + {"av_register_all", (void **) &qav_register_all}, + {"av_register_input_format", (void **) &qav_register_input_format}, + {"av_register_output_format", (void **) &qav_register_output_format}, + {"avformat_network_init", (void **) &qavformat_network_init}, + {"avformat_network_deinit", (void **) &qavformat_network_deinit}, + {"av_iformat_next", (void **) &qav_iformat_next}, + {"av_oformat_next", (void **) &qav_oformat_next}, + {"avformat_alloc_context", (void **) &qavformat_alloc_context}, + {"avformat_free_context", (void **) &qavformat_free_context}, + {"avformat_get_class", (void **) &qavformat_get_class}, + {"avformat_new_stream", (void **) &qavformat_new_stream}, + {"av_stream_new_side_data", (void **) &qav_stream_new_side_data}, + {"av_stream_get_side_data", (void **) &qav_stream_get_side_data}, + {"av_new_program", (void **) &qav_new_program}, + {"av_hex_dump", (void **) &qav_hex_dump}, + {"av_hex_dump_log", (void **) &qav_hex_dump_log}, + {"av_pkt_dump2", (void **) &qav_pkt_dump2}, + {"av_pkt_dump_log2", (void **) &qav_pkt_dump_log2}, + {"av_codec_get_id", (void **) &qav_codec_get_id}, + {"av_codec_get_tag", (void **) &qav_codec_get_tag}, + {"av_codec_get_tag2", (void **) &qav_codec_get_tag2}, + {"av_find_default_stream_index", (void **) &qav_find_default_stream_index}, + {"av_index_search_timestamp", (void **) &qav_index_search_timestamp}, + {"av_add_index_entry", (void **) &qav_add_index_entry}, + {"av_url_split", (void **) &qav_url_split}, + {"av_dump_format", (void **) &qav_dump_format}, + {"av_get_frame_filename2", (void **) &qav_get_frame_filename2}, + {"av_get_frame_filename", (void **) &qav_get_frame_filename}, + {"av_filename_number_test", (void **) &qav_filename_number_test}, + {"av_sdp_create", (void **) &qav_sdp_create}, + {"av_match_ext", (void **) &qav_match_ext}, + {"avformat_query_codec", (void **) &qavformat_query_codec}, + {"av_guess_sample_aspect_ratio", (void **) &qav_guess_sample_aspect_ratio}, + {"av_guess_frame_rate", (void **) &qav_guess_frame_rate}, + {"avformat_match_stream_specifier", (void **) &qavformat_match_stream_specifier}, + {"avformat_queue_attached_pictures", (void **) &qavformat_queue_attached_pictures}, + {"avformat_transfer_internal_stream_timing_info", (void **) &qavformat_transfer_internal_stream_timing_info}, + {"av_stream_get_codec_timebase", (void **) &qav_stream_get_codec_timebase}, + {NULL, NULL} +}; + +static dllhandle_t libavcodec_dll = NULL; +static dllhandle_t libavformat_dll = NULL; + +qbool LibAV_LoadLibrary(void) +{ + const char* dllnames_libavcodec [] = + { +#if defined(WIN32) + "libavcodec.dll", +#elif defined(MACOSX) + "libavcodec.dylib", +#else + "libavcodec.so", +#endif + NULL + }; + + const char* dllnames_libavformat [] = + { +#if defined(WIN32) + "libavformat.dll", +#elif defined(MACOSX) + "libavformat.dylib", +#else + "libavformat.so", +#endif + NULL + }; + + if (libavcodec_dll && libavformat_dll) // Already loaded? + return true; + +// COMMANDLINEOPTION: -nolibav disables libav support + if (Sys_CheckParm("-nolibav")) + return false; + + // Load the DLL + if (Sys_LoadLibrary (dllnames_libavcodec, &libavcodec_dll, libavcodecfuncs)) + { + if(Sys_LoadLibrary(dllnames_libavformat, &libavformat_dll, libavformatfuncs)) + return true; + Con_Printf(CON_ERROR "Failed to load the libavformat library. Cannot use libavcodec without it\n"); + Sys_UnloadLibrary(&libavcodec_dll); + } + + return false; +} \ No newline at end of file