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author | Ludmila Glinskih <lglinskih@gmail.com> | 2015-08-24 03:11:45 +0300 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-08-24 03:54:55 +0200 |
commit | 4a9bc12fe74a61dc791c48464cc4ac99c5bf206f (patch) | |
tree | 3bbcda59cc5168faddb235bad094fc508b30beb0 /tests/api/api-band-test.c | |
parent | 1bf76cd2db0aa5c140828e5fea6f34203977ba3a (diff) | |
download | ffmpeg-4a9bc12fe74a61dc791c48464cc4ac99c5bf206f.tar.gz |
fate: add api-band-test
Works only for flv, h263 and huffyuv decoders.
Makes only one pass through the file (this should be changed to two passes)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'tests/api/api-band-test.c')
-rw-r--r-- | tests/api/api-band-test.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/tests/api/api-band-test.c b/tests/api/api-band-test.c new file mode 100644 index 0000000000..d0dee64ef8 --- /dev/null +++ b/tests/api/api-band-test.c @@ -0,0 +1,222 @@ +/* + * Copyright (c) 2015 Ludmila Glinskih + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +/** + * draw_horiz_band test. + */ + +#include "libavutil/adler32.h" +#include "libavcodec/avcodec.h" +#include "libavformat/avformat.h" +#include "libavutil/imgutils.h" + +uint8_t *slice_byte_buffer; +uint8_t slice_byte_buffer_size; +int draw_horiz_band_called; + +static void draw_horiz_band(AVCodecContext *ctx, const AVFrame *fr, int offset[4], + int slice_position, int type, int height) +{ + int i; + const AVPixFmtDescriptor *pix_fmt_desc; + int chroma_w, chroma_h; + int shift_slice_position; + int shift_height; + + draw_horiz_band_called = 1; + + pix_fmt_desc = av_pix_fmt_desc_get(ctx->pix_fmt); + chroma_w = -((-ctx->width) >> pix_fmt_desc->log2_chroma_w); + chroma_h = -((-height) >> pix_fmt_desc->log2_chroma_h); + shift_slice_position = -((-slice_position) >> pix_fmt_desc->log2_chroma_h); + shift_height = -((-ctx->height) >> pix_fmt_desc->log2_chroma_h); + + for (i = 0; i < height; i++) { + memcpy(slice_byte_buffer + ctx->width * slice_position + i * ctx->width, + fr->data[0] + offset[0] + i * fr->linesize[0], ctx->width); + } + for (i = 0; i < chroma_h; i++) { + memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_slice_position + i * chroma_w, + fr->data[1] + offset[1] + i * fr->linesize[1], chroma_w); + } + for (i = 0; i < chroma_h; i++) { + memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_height + chroma_w * shift_slice_position + i * chroma_w, + fr->data[2] + offset[2] + i * fr->linesize[2], chroma_w); + } +} + +static int video_decode(const char *input_filename) +{ + AVCodec *codec = NULL; + AVCodecContext *origin_ctx = NULL, *ctx= NULL; + uint8_t *byte_buffer = NULL; + AVFrame *fr = NULL; + AVPacket pkt; + AVFormatContext *fmt_ctx = NULL; + int number_of_written_bytes; + int video_stream; + int got_frame = 0; + int byte_buffer_size; + int result; + int end_of_stream = 0; + + draw_horiz_band_called = 0; + + result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL); + if (result < 0) { + av_log(NULL, AV_LOG_ERROR, "Can't open file\n"); + return result; + } + + result = avformat_find_stream_info(fmt_ctx, NULL); + if (result < 0) { + av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n"); + return result; + } + + video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0); + if (video_stream < 0) { + av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n"); + return -1; + } + + origin_ctx = fmt_ctx->streams[video_stream]->codec; + + codec = avcodec_find_decoder(origin_ctx->codec_id); + if (!codec) { + av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n"); + return -1; + } + + ctx = avcodec_alloc_context3(codec); + if (!ctx) { + av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n"); + return AVERROR(ENOMEM); + } + + result = avcodec_copy_context(ctx, origin_ctx); + if (result) { + av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n"); + return result; + } + + ctx->draw_horiz_band = draw_horiz_band; + ctx->thread_count = 1; + + result = avcodec_open2(ctx, codec, NULL); + if (result < 0) { + av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n"); + return result; + } + + fr = av_frame_alloc(); + if (!fr) { + av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n"); + return AVERROR(ENOMEM); + } + + if (strcmp(codec->name, "flv") && strcmp(codec->name, "mpeg4") && strcmp(codec->name, "huffyuv")) { + av_log(NULL, AV_LOG_ERROR, "Wrong codec\n"); + return -1; + } + + byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 32); + byte_buffer = av_malloc(byte_buffer_size); + if (!byte_buffer) { + av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n"); + return AVERROR(ENOMEM); + } + + slice_byte_buffer = av_malloc(byte_buffer_size); + if (!slice_byte_buffer) { + av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n"); + return AVERROR(ENOMEM); + } + memset(slice_byte_buffer, 0, byte_buffer_size); + slice_byte_buffer_size = byte_buffer_size; + + av_init_packet(&pkt); + do { + if (!end_of_stream) { + if (av_read_frame(fmt_ctx, &pkt) < 0) { + end_of_stream = 1; + } + } + if (end_of_stream) { + pkt.data = NULL; + pkt.size = 0; + } + if (pkt.stream_index == video_stream || end_of_stream) { + got_frame = 0; + result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt); + if (result < 0) { + av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n"); + return result; + } + if (got_frame) { + number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size, + (const uint8_t* const *)fr->data, (const int*) fr->linesize, + ctx->pix_fmt, ctx->width, ctx->height, 1); + if (number_of_written_bytes < 0) { + av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n"); + return number_of_written_bytes; + } + if (draw_horiz_band_called == 0) { + av_log(NULL, AV_LOG_ERROR, "draw_horiz_band haven't been called!\n"); + return -1; + } + if (av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes) != + av_adler32_update(0, (const uint8_t*)slice_byte_buffer, number_of_written_bytes)) { + av_log(NULL, AV_LOG_ERROR, "Decoded frames with and without draw_horiz_band are not the same!\n"); + return -1; + } + } + av_free_packet(&pkt); + av_init_packet(&pkt); + } + } while (!end_of_stream || got_frame); + + av_free_packet(&pkt); + av_frame_free(&fr); + avcodec_close(ctx); + avformat_close_input(&fmt_ctx); + avcodec_free_context(&ctx); + av_freep(&byte_buffer); + av_freep(&slice_byte_buffer); + return 0; +} + +int main(int argc, char **argv) +{ + if (argc < 2) + { + av_log(NULL, AV_LOG_ERROR, "Incorrect input: expected %s <name of a video file>\nNote that test works only for huffyuv, flv and mpeg4 decoders\n", argv[0]); + return 1; + } + + av_register_all(); + + if (video_decode(argv[1]) != 0) + return 1; + + return 0; +} |