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just a simple, video only, display at the moment
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,284 @@ | ||
| /** | ||
| * @file video_display/file.c | ||
| * @author Martin Pulec <[email protected]> | ||
| */ | ||
| /* | ||
| * Copyright (c) 2023 CESNET, z. s. p. o. | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, is permitted provided that the following conditions | ||
| * are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in the | ||
| * documentation and/or other materials provided with the distribution. | ||
| * | ||
| * 3. Neither the name of CESNET nor the names of its contributors may be | ||
| * used to endorse or promote products derived from this software without | ||
| * specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, | ||
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | ||
| * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | ||
| * EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | ||
| * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | ||
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | ||
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
|
|
||
| #include <assert.h> | ||
| #include <libavcodec/avcodec.h> | ||
| #include <libavformat/avformat.h> | ||
|
|
||
| #include "debug.h" | ||
| #include "lib_common.h" | ||
| #include "libavcodec/utils.h" | ||
| #include "types.h" | ||
| #include "utils/color_out.h" | ||
| #include "utils/fs.h" | ||
| #include "utils/macros.h" | ||
| #include "utils/misc.h" | ||
| #include "video.h" | ||
| #include "video_display.h" | ||
|
|
||
| #define DEFAULT_FILENAME "out.nut" | ||
| #define MOD_NAME "[File disp.] " | ||
|
|
||
| struct output_stream { | ||
| AVStream *st; | ||
| AVCodecContext *enc; | ||
| AVPacket *pkt; | ||
| AVFrame *frame; | ||
| }; | ||
|
|
||
| struct state_file { | ||
| AVFormatContext *format_ctx; | ||
| struct output_stream video; | ||
| struct video_desc video_desc; | ||
| char filename[MAX_PATH_SIZE]; | ||
| }; | ||
|
|
||
| static void | ||
| display_file_probe(struct device_info **available_cards, int *count, | ||
| void (**deleter)(void *)) | ||
| { | ||
| *deleter = free; | ||
| *count = 1; | ||
| *available_cards = calloc(*count, sizeof **available_cards); | ||
| snprintf((*available_cards)[0].name, sizeof(*available_cards)[0].name, | ||
| "file"); | ||
| } | ||
|
|
||
| static void | ||
| display_file_done(void *state) | ||
| { | ||
| struct state_file *s = state; | ||
| av_write_trailer(s->format_ctx); | ||
| avcodec_free_context(&s->video.enc); | ||
| if (!(s->format_ctx->oformat->flags & AVFMT_NOFILE)) { | ||
| avio_closep(&s->format_ctx->pb); | ||
| } | ||
| av_frame_free(&s->video.frame); | ||
| av_packet_free(&s->video.pkt); | ||
| free(s); | ||
| } | ||
|
|
||
| static void | ||
| usage(void) | ||
| { | ||
| color_printf("Display " TBOLD("file") " syntax:\n"); | ||
| color_printf("\t" TBOLD(TRED("file") "[:file=<name>]") "\n"); | ||
| } | ||
|
|
||
| static void * | ||
| display_file_init(struct module *parent, const char *fmt, unsigned int flags) | ||
| { | ||
| const char *filename = DEFAULT_FILENAME; | ||
| UNUSED(flags); | ||
| UNUSED(parent); | ||
| if (strlen(fmt) > 0) { | ||
| if (IS_KEY_PREFIX(fmt, "file")) { | ||
| filename = strchr(fmt, '=') + 1; | ||
| } else { | ||
| usage(); | ||
| return strcmp(fmt, "help") == 0 ? INIT_NOERR : NULL; | ||
| } | ||
| } | ||
| struct state_file *s = calloc(1, sizeof *s); | ||
| strncat(s->filename, filename, sizeof s->filename - 1); | ||
| avformat_alloc_output_context2(&s->format_ctx, NULL, NULL, filename); | ||
| if (s->format_ctx == NULL) { | ||
| log_msg(LOG_LEVEL_WARNING, "Could not deduce output format " | ||
| "from file extension, using NUT.\n"); | ||
| avformat_alloc_output_context2(&s->format_ctx, NULL, "nut", | ||
| filename); | ||
| assert(s->format_ctx != NULL); | ||
| } | ||
| s->video.st = avformat_new_stream(s->format_ctx, NULL); | ||
| s->video.st->id = 0; | ||
|
|
||
| if (!(s->format_ctx->oformat->flags & AVFMT_NOFILE)) { | ||
| int ret = | ||
| avio_open(&s->format_ctx->pb, filename, AVIO_FLAG_WRITE); | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "avio_open: %s\n", av_err2str(ret)); | ||
| display_file_done(s); | ||
| return NULL; | ||
| } | ||
| } | ||
| s->video.frame = av_frame_alloc(); | ||
| s->video.pkt = av_packet_alloc(); | ||
|
|
||
| return s; | ||
| } | ||
|
|
||
| static struct video_frame * | ||
| display_file_getf(void *state) | ||
| { | ||
| struct state_file *s = state; | ||
| struct video_frame *out = vf_alloc_desc(s->video_desc); | ||
| out->tiles[0].data = (char *) s->video.frame->data[0]; | ||
| return out; | ||
| } | ||
|
|
||
| static bool | ||
| display_file_putf(void *state, struct video_frame *frame, long long timeout_ns) | ||
| { | ||
| vf_free(frame); // not needed | ||
| if (timeout_ns == PUTF_DISCARD) { | ||
| return true; | ||
| } | ||
| struct state_file *s = state; | ||
|
|
||
| int ret = avcodec_send_frame(s->video.enc, s->video.frame); | ||
| s->video.frame->pts += 1; | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "avcodec_send_frame: %s\n", av_err2str(ret)); | ||
| return false; | ||
| } | ||
| while (ret >= 0) { | ||
| ret = avcodec_receive_packet(s->video.enc, s->video.pkt); | ||
| if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) { | ||
| break; | ||
| } | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "avcodec_receive_frame: %s\n", | ||
| av_err2str(ret)); | ||
| return false; | ||
| } | ||
| av_packet_rescale_ts(s->video.pkt, s->video.enc->time_base, | ||
| s->video.st->time_base); | ||
| s->video.pkt->stream_index = s->video.st->index; | ||
| ret = av_interleaved_write_frame(s->format_ctx, s->video.pkt); | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "error writting packet: %s\n", | ||
| av_err2str(ret)); | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| static bool | ||
| display_file_get_property(void *state, int property, void *val, size_t *len) | ||
| { | ||
| UNUSED(state); | ||
|
|
||
| codec_t codecs[VIDEO_CODEC_COUNT] = { 0 }; | ||
| int count = 0; | ||
| for (int i = 0; i < VIDEO_CODEC_COUNT; ++i) { | ||
| if (get_ug_to_av_pixfmt(i)) { | ||
| codecs[count++] = i; | ||
| } | ||
| } | ||
| const size_t c_len = count * sizeof codecs[0]; | ||
| if (property == DISPLAY_PROPERTY_CODECS) { | ||
| assert(c_len <= *len); | ||
| memcpy(val, codecs, c_len); | ||
| *len = c_len; | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| static bool | ||
| display_file_reconfigure(void *state, struct video_desc desc) | ||
| { | ||
| struct state_file *s = state; | ||
|
|
||
| s->video_desc = desc; | ||
| s->video.st->time_base = (AVRational){ get_framerate_d(desc.fps), | ||
| get_framerate_n(desc.fps) }; | ||
| const AVCodec *codec = avcodec_find_encoder(AV_CODEC_ID_RAWVIDEO); | ||
| avcodec_free_context(&s->video.enc); | ||
| s->video.enc = avcodec_alloc_context3(codec); | ||
| s->video.enc->width = (int) desc.width; | ||
| s->video.enc->height = (int) desc.height; | ||
| s->video.enc->time_base = s->video.st->time_base; | ||
| s->video.enc->pix_fmt = get_ug_to_av_pixfmt(desc.color_spec); | ||
| int ret = avcodec_open2(s->video.enc, codec, NULL); | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "avcodec_open2: %s\n", av_err2str(ret)); | ||
| return false; | ||
| } | ||
| ret = avcodec_parameters_from_context(s->video.st->codecpar, | ||
| s->video.enc); | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "Could not copy the stream parameters: %s\n", | ||
| av_err2str(ret)); | ||
| return false; | ||
| } | ||
| s->video.frame->format = s->video.enc->pix_fmt; | ||
| s->video.frame->width = (int) desc.width; | ||
| s->video.frame->height = (int) desc.height; | ||
| s->video.frame->pts = 0; | ||
| ret = av_frame_get_buffer(s->video.frame, 0); | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME "Could not allocate frame data: %s.\n", | ||
| av_err2str(ret)); | ||
| return false; | ||
| } | ||
|
|
||
| av_dump_format(s->format_ctx, 0, s->filename, 1); | ||
|
|
||
| ret = avformat_write_header(s->format_ctx, NULL); | ||
| if (ret < 0) { | ||
| error_msg(MOD_NAME | ||
| "Error occurred when opening output file: %s\n", | ||
| av_err2str(ret)); | ||
| return false; | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
|
|
||
| static const void * | ||
| display_file_info_get() | ||
| { | ||
| static const struct video_display_info display_file_info = { | ||
| display_file_probe, | ||
| display_file_init, | ||
| NULL, // _run | ||
| display_file_done, | ||
| display_file_getf, | ||
| display_file_putf, | ||
| display_file_reconfigure, | ||
| display_file_get_property, | ||
| NULL, | ||
| NULL, | ||
| MOD_NAME, | ||
| }; | ||
| return &display_file_info; | ||
| }; | ||
|
|
||
| REGISTER_MODULE_WITH_FUNC(file, display_file_info_get, | ||
| LIBRARY_CLASS_VIDEO_DISPLAY, | ||
| VIDEO_DISPLAY_ABI_VERSION); |