Merge "Adapting decode_with_drops example to use new file reading API."
This commit is contained in:
Dmitry Kovalev
Gerrit Code Review
commit
99d39e5b99
@ -101,6 +101,8 @@ force_keyframe.GUID = 3C67CADF-029F-4C86-81F5-D6D4F51177F0
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force_keyframe.DESCRIPTION = Force generation of keyframes
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ifeq ($(CONFIG_DECODERS),yes)
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GEN_EXAMPLES-$(CONFIG_VP8_ENCODER) += decode_with_drops.c
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decode_with_drops.SRCS += ivfdec.h ivfdec.c
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decode_with_drops.SRCS += tools_common.h tools_common.c
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endif
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decode_with_drops.GUID = CE5C53C4-8DDA-438A-86ED-0DDD3CDB8D26
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decode_with_drops.DESCRIPTION = Drops frames while decoding
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@ -52,126 +52,103 @@
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// The example decides whether to drop the frame based on the current
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// frame number, immediately before decoding the frame.
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "./ivfdec.h"
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#define VPX_CODEC_DISABLE_COMPAT 1
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#include "./vpx_config.h"
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#include "vpx/vp8dx.h"
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#include "vpx/vpx_decoder.h"
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#define interface (vpx_codec_vp8_dx())
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#include "./tools_common.h"
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#include "./vpx_config.h"
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#define IVF_FILE_HDR_SZ (32)
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#define IVF_FRAME_HDR_SZ (12)
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static const char *exec_name;
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static unsigned int mem_get_le32(const unsigned char *mem) {
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return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]);
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void usage_exit() {
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fprintf(stderr, "Usage: %s <infile> <outfile> <N-M|N/M>\n", exec_name);
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exit(EXIT_FAILURE);
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}
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static void die(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vprintf(fmt, ap);
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if(fmt[strlen(fmt)-1] != '\n')
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printf("\n");
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exit(EXIT_FAILURE);
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}
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static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
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const char *detail = vpx_codec_error_detail(ctx);
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printf("%s: %s\n", s, vpx_codec_error(ctx));
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if(detail)
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printf(" %s\n",detail);
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exit(EXIT_FAILURE);
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}
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int main(int argc, char **argv) {
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FILE *infile, *outfile;
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vpx_codec_ctx_t codec;
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int flags = 0, frame_cnt = 0;
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unsigned char file_hdr[IVF_FILE_HDR_SZ];
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unsigned char frame_hdr[IVF_FRAME_HDR_SZ];
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unsigned char frame[256*1024];
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vpx_codec_err_t res;
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int n, m, is_range;
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FILE *infile, *outfile;
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vpx_codec_ctx_t codec;
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vpx_codec_iface_t *iface;
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int flags = 0, frame_cnt = 0;
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vpx_video_t *video;
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int n, m, is_range;
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char *nptr;
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(void)res;
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/* Open files */
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if(argc!=4)
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die("Usage: %s <infile> <outfile> <N-M|N/M>\n", argv[0]);
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{
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char *nptr;
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n = strtol(argv[3], &nptr, 0);
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m = strtol(nptr+1, NULL, 0);
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is_range = *nptr == '-';
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if(!n || !m || (*nptr != '-' && *nptr != '/'))
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die("Couldn't parse pattern %s\n", argv[3]);
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exec_name = argv[0];
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if (argc != 4)
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die("Invalid number of arguments");
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if (!(infile = fopen(argv[1], "rb")))
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die("Failed to open %s for reading", argv[1]);
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if (!(outfile = fopen(argv[2], "wb")))
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die("Failed to open %s for writing", argv[2]);
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n = strtol(argv[3], &nptr, 0);
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m = strtol(nptr + 1, NULL, 0);
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is_range = (*nptr == '-');
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if (!n || !m || (*nptr != '-' && *nptr != '/'))
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die("Couldn't parse pattern %s\n", argv[3]);
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video = vpx_video_open_file(infile);
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if (!video)
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die("%s is not a supported input file.", argv[1]);
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iface = get_codec_interface(vpx_video_get_fourcc(video));
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if (!iface)
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die("Unknown FOURCC code.");
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printf("Using %s\n", vpx_codec_iface_name(iface));
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if (vpx_codec_dec_init(&codec, iface, NULL, flags))
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die_codec(&codec, "Failed to initialize decoder");
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while (vpx_video_read_frame(video)) {
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vpx_codec_iter_t iter = NULL;
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vpx_image_t *img = NULL;
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size_t frame_size = 0;
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int skip;
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const unsigned char *frame = vpx_video_get_frame(video, &frame_size);
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if (vpx_codec_decode(&codec, frame, frame_size, NULL, 0))
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die_codec(&codec, "Failed to decode frame");
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++frame_cnt;
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skip = (is_range && frame_cnt >= n && frame_cnt <= m) ||
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(!is_range && m - (frame_cnt - 1) % m <= n);
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if (!skip) {
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putc('.', stdout);
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while ((img = vpx_codec_get_frame(&codec, &iter)) != NULL)
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vpx_img_write(img, outfile);
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} else {
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putc('X', stdout);
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}
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if(!(infile = fopen(argv[1], "rb")))
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die("Failed to open %s for reading", argv[1]);
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if(!(outfile = fopen(argv[2], "wb")))
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die("Failed to open %s for writing", argv[2]);
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/* Read file header */
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if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ
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&& file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I'
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&& file_hdr[3]=='F'))
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die("%s is not an IVF file.", argv[1]);
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fflush(stdout);
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}
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printf("Using %s\n",vpx_codec_iface_name(interface));
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/* Initialize codec */
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if(vpx_codec_dec_init(&codec, interface, NULL, flags))
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die_codec(&codec, "Failed to initialize decoder");
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printf("Processed %d frames.\n", frame_cnt);
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if (vpx_codec_destroy(&codec))
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die_codec(&codec, "Failed to destroy codec");
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/* Read each frame */
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while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) {
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int frame_sz = mem_get_le32(frame_hdr);
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vpx_codec_iter_t iter = NULL;
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vpx_image_t *img;
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printf("Play: ffplay -f rawvideo -pix_fmt yuv420p -s %dx%d %s\n",
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vpx_video_get_width(video), vpx_video_get_height(video), argv[2]);
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vpx_video_close(video);
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frame_cnt++;
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if(frame_sz > sizeof(frame))
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die("Frame %d data too big for example code buffer", frame_sz);
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if(fread(frame, 1, frame_sz, infile) != frame_sz)
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die("Frame %d failed to read complete frame", frame_cnt);
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fclose(outfile);
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fclose(infile);
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if((is_range && frame_cnt >= n && frame_cnt <= m)
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||(!is_range && m - (frame_cnt-1)%m <= n)) {
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putc('X', stdout);
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continue;
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}
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putc('.', stdout);
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fflush(stdout);
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/* Decode the frame */
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if(vpx_codec_decode(&codec, frame, frame_sz, NULL, 0))
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die_codec(&codec, "Failed to decode frame");
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/* Write decoded data to disk */
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while((img = vpx_codec_get_frame(&codec, &iter))) {
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unsigned int plane, y;
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for(plane=0; plane < 3; plane++) {
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unsigned char *buf =img->planes[plane];
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for(y=0; y < (plane ? (img->d_h + 1) >> 1 : img->d_h); y++) {
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(void) fwrite(buf, 1, (plane ? (img->d_w + 1) >> 1 : img->d_w),
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outfile);
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buf += img->stride[plane];
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}
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}
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}
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}
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printf("Processed %d frames.\n",frame_cnt);
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if(vpx_codec_destroy(&codec))
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die_codec(&codec, "Failed to destroy codec");
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fclose(outfile);
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fclose(infile);
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return EXIT_SUCCESS;
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return EXIT_SUCCESS;
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}
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